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Cheap flights from Ontario to St. Louis from C$ 214

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
YYZ — STL
21 may. — 28 may.1
1 adult
mar. 21/5
mar. 28/5

How far in advance should I book a flight from Region of Ontario to St. Louis?

Find a great deal and save up to 85% by booking at least 44 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Region of Ontario to St. Louis within the next two weeks, with the cheapest ticket starting at C$ 591.

What is the cheapest month to fly from Region of Ontario to St. Louis?

Flights from Region of Ontario to St. Louis lean towards being more expensive in June. Prices are generally better when you fly from Region of Ontario to St. Louis in January, with the cheapest ticket starting at C$ 460.

When is the cheapest time to fly from Region of Ontario to St. Louis (ON - STL)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to St. Louis as you normally would.

Cheap United Airlines flights from Ontario to St. Louis

Explore cheap flight options specifically provided by United Airlines for the route between Ontario and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 409,532 searches. Data last updated 16 mayo 2024.
Find some of the cheapest United Airlines flights travelling from Ontario to St. Louis. Deals update often to give you more flight options matching your criteria
sáb. 7/97:30 p.m.YUL - STL
Nonstop2h 35mUnited Airlines
mar. 10/95:18 p.m.STL - YUL
2 stops15h 53mUnited Airlines
Deal found 14/5C$ 518
vie. 30/86:15 a.m.YUL - STL
1 stop4h 52mUnited Airlines
dom. 1/96:02 a.m.STL - YUL
1 stop6h 14mUnited Airlines
Deal found 14/5C$ 525
sáb. 7/911:30 a.m.YUL - STL
1 stop5h 19mUnited Airlines
mar. 10/95:18 p.m.STL - YUL
2 stops15h 53mUnited Airlines
Deal found 14/5C$ 526
vie. 28/62:15 p.m.YYZ - STL
Nonstop2h 06mUnited Airlines
lun. 1/75:30 p.m.STL - YYZ
1 stop5h 28mUnited Airlines
Deal found 14/5C$ 604
vie. 14/62:15 p.m.YYZ - STL
Nonstop2h 06mUnited Airlines
dom. 23/66:08 a.m.STL - YYZ
1 stop6h 39mUnited Airlines
Deal found 15/5C$ 617
sáb. 7/96:30 a.m.YOW - STL
1 stop10h 19mUnited Airlines
mié. 11/911:10 a.m.STL - YOW
1 stop9h 39mUnited Airlines
Deal found 14/5C$ 644
mar. 16/72:15 p.m.YYZ - STL
Nonstop2h 06mUnited Airlines
vie. 19/75:30 p.m.STL - YYZ
2 stops13h 28mUnited Airlines
Deal found 15/5C$ 662
dom. 26/56:55 p.m.YYZ - STL
Nonstop2h 06mUnited Airlines
lun. 17/611:00 a.m.STL - YYZ
Nonstop2h 01mUnited Airlines
Deal found 15/5C$ 1,772
vie. 28/67:30 p.m.YUL - STL
Nonstop2h 35mUnited Airlines
dom. 30/69:50 a.m.STL - YUL
Nonstop2h 23mUnited Airlines
Deal found 14/5C$ 1,954

Cheap Delta flights from Ontario to St. Louis

Explore cheap flight options specifically provided by Delta for the route between Ontario and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 409,532 searches. Data last updated 16 mayo 2024.
Some of the lowest-priced Delta flights we've found at this time heading from Ontario to St. Louis. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
sáb. 7/97:30 a.m.YUL - STL
1 stop7h 59mDelta
mar. 10/96:00 p.m.STL - YUL
1 stop4h 02mDelta
Deal found 15/5C$ 527
mar. 4/67:44 a.m.YYZ - STL
1 stop5h 04mDelta
mié. 5/66:30 p.m.STL - YYZ
1 stop4h 27mDelta
Deal found 15/5C$ 563
lun. 3/66:46 p.m.YUL - STL
1 stop5h 54mDelta
vie. 7/64:02 p.m.STL - YUL
1 stop6h 53mDelta
Deal found 14/5C$ 583
lun. 27/57:45 a.m.YYZ - STL
1 stop5h 03mDelta
mié. 19/64:02 p.m.STL - YYZ
1 stop4h 57mDelta
Deal found 15/5C$ 601
mié. 22/510:00 a.m.YUL - STL
1 stop5h 10mDelta
mié. 29/52:18 p.m.STL - YUL
1 stop7h 50mDelta
Deal found 15/5C$ 609
lun. 27/56:34 a.m.YYZ - STL
1 stop5h 36mDelta
mar. 18/611:25 a.m.STL - YYZ
1 stop4h 43mDelta
Deal found 15/5C$ 612
mié. 26/67:00 a.m.YUL - STL
1 stop8h 30mDelta
mar. 9/73:00 p.m.STL - YUL
1 stop7h 10mDelta
Deal found 15/5C$ 736
mar. 21/52:14 p.m.YYZ - STL
2 stops8h 20mDelta
dom. 26/56:11 a.m.STL - YYZ
1 stop4h 28mDelta
Deal found 16/5C$ 1,061
mar. 21/52:14 p.m.YYZ - STL
2 stops8h 20mDelta
dom. 26/56:30 a.m.STL - YYZ
2 stops10h 29mDelta
Deal found 16/5C$ 1,387

Cheap Ontario to St. Louis flights in May & June 2024

Find cheap flight options from Ontario to St. Louis specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 409,532 searches. Prices were last updated on 16 mayo 2024.
Listed are some of the best fares we've found on flights departing from Ontario to St. Louis in 2024. For more flight deals, be sure to check back very soon.
dom. 9/66:30 a.m.YYZ - STL
1 stop11h 02mMultiple Airlines
mar. 11/611:57 a.m.STL - YYZ
1 stop25h 31mMultiple Airlines
Deal found 15/5C$ 358
mié. 22/57:50 a.m.YYZ - STL
1 stop13h 20mMultiple Airlines
mié. 29/59:10 p.m.STL - YYZ
1 stop25h 16mMultiple Airlines
Deal found 15/5C$ 384
mar. 28/57:50 a.m.YYZ - STL
1 stop6h 47mMultiple Airlines
mar. 18/67:29 p.m.STL - YYZ
1 stop10h 06mMultiple Airlines
Deal found 15/5C$ 396
lun. 17/64:15 p.m.YYZ - STL
2 stops23h 08mMultiple Airlines
mié. 19/61:55 p.m.STL - YYZ
1 stop15h 48mMultiple Airlines
Deal found 16/5C$ 416
dom. 26/56:30 a.m.YYZ - STL
1 stop11h 59mMultiple Airlines
mar. 18/67:29 p.m.STL - YYZ
1 stop10h 06mMultiple Airlines
Deal found 15/5C$ 422
dom. 9/66:30 a.m.YYZ - STL
1 stop11h 02mMultiple Airlines
mar. 11/67:45 a.m.STL - YYZ
2 stops10h 50mMultiple Airlines
Deal found 15/5C$ 426
vie. 24/58:15 p.m.YYZ - STL
1 stop15h 13mMultiple Airlines
jue. 20/67:45 a.m.STL - YYZ
2 stops10h 50mMultiple Airlines
Deal found 15/5C$ 440
vie. 24/510:40 a.m.YYZ - STL
1 stop24h 48mMultiple Airlines
mié. 19/61:55 p.m.STL - YYZ
1 stop15h 48mMultiple Airlines
Deal found 15/5C$ 441
vie. 24/58:15 p.m.YYZ - STL
1 stop15h 13mMultiple Airlines
sáb. 22/611:34 a.m.STL - YYZ
1 stop10h 52mMultiple Airlines
Deal found 15/5C$ 443

Ontario to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Ontario and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 409,532 searches. Data last updated 16 mayo 2024.
Listed are some of the best fares we've found on flights departing from Ontario to St. Louis in 2024. For more flight deals, be sure to check back very soon.
dom. 9/66:30 a.m.YYZ - STL
1 stop11h 02mMultiple Airlines
mar. 11/611:57 a.m.STL - YYZ
1 stop25h 31mMultiple Airlines
Deal found 15/5C$ 358
mié. 22/57:50 a.m.YYZ - STL
1 stop13h 20mMultiple Airlines
mié. 29/59:10 p.m.STL - YYZ
1 stop25h 16mMultiple Airlines
Deal found 15/5C$ 384
mar. 28/57:50 a.m.YYZ - STL
1 stop6h 47mMultiple Airlines
mar. 18/67:29 p.m.STL - YYZ
1 stop10h 06mMultiple Airlines
Deal found 15/5C$ 396
lun. 17/64:15 p.m.YYZ - STL
2 stops23h 08mMultiple Airlines
mié. 19/61:55 p.m.STL - YYZ
1 stop15h 48mMultiple Airlines
Deal found 16/5C$ 416
dom. 26/56:30 a.m.YYZ - STL
1 stop11h 59mMultiple Airlines
mar. 18/67:29 p.m.STL - YYZ
1 stop10h 06mMultiple Airlines
Deal found 15/5C$ 422
dom. 9/66:30 a.m.YYZ - STL
1 stop11h 02mMultiple Airlines
mar. 11/67:45 a.m.STL - YYZ
2 stops10h 50mMultiple Airlines
Deal found 15/5C$ 426
vie. 24/58:15 p.m.YYZ - STL
1 stop15h 13mMultiple Airlines
jue. 20/67:45 a.m.STL - YYZ
2 stops10h 50mMultiple Airlines
Deal found 15/5C$ 440
vie. 24/510:40 a.m.YYZ - STL
1 stop24h 48mMultiple Airlines
mié. 19/61:55 p.m.STL - YYZ
1 stop15h 48mMultiple Airlines
Deal found 15/5C$ 441
vie. 24/58:15 p.m.YYZ - STL
1 stop15h 13mMultiple Airlines
sáb. 22/611:34 a.m.STL - YYZ
1 stop10h 52mMultiple Airlines
Deal found 15/5C$ 443

Direct flights to St. Louis from Ontario

Discover non-stop flight options from Ontario to St. Louis. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 409,532 searches. Data last updated 16 mayo 2024.
Take a look at some of the direct flights travelling from Ontario to St. Louis in the near future. Users seeking other options on flights from Ontario to St. Louis should update the search form at the top of the page.
jue. 3/106:55 p.m.YYZ - STL
Nonstop2h 05mAir Canada
dom. 6/104:05 p.m.STL - YYZ
Nonstop1h 54mAir Canada
Deal found 14/5C$ 593
mié. 10/72:15 p.m.YYZ - STL
Nonstop2h 06mMultiple Airlines
mar. 16/74:05 p.m.STL - YYZ
Nonstop1h 59mMultiple Airlines
Deal found 15/5C$ 598
vie. 28/62:15 p.m.YYZ - STL
Nonstop2h 06mUnited Airlines
lun. 1/74:05 p.m.STL - YYZ
Nonstop1h 59mUnited Airlines
Deal found 14/5C$ 604
vie. 14/66:55 p.m.YYZ - STL
Nonstop2h 06mMultiple Airlines
dom. 23/611:00 a.m.STL - YYZ
Nonstop1h 59mMultiple Airlines
Deal found 16/5C$ 619
lun. 12/86:55 p.m.YYZ - STL
Nonstop2h 06mAir Canada
dom. 18/810:10 a.m.STL - YYZ
Nonstop1h 59mAir Canada
Deal found 15/5C$ 624
mié. 29/52:15 p.m.YYZ - STL
Nonstop2h 06mAir Canada
sáb. 22/64:05 p.m.STL - YYZ
Nonstop1h 59mAir Canada
Deal found 15/5C$ 636
mié. 3/72:15 p.m.YYZ - STL
Nonstop2h 06mAir Canada
dom. 7/710:10 a.m.STL - YYZ
Nonstop1h 59mAir Canada
Deal found 15/5C$ 638
jue. 15/86:55 p.m.YYZ - STL
Nonstop2h 06mAir Canada
dom. 18/84:05 p.m.STL - YYZ
Nonstop1h 59mAir Canada
Deal found 16/5C$ 639
vie. 16/87:30 p.m.YUL - STL
Nonstop2h 35mAir Canada
mié. 21/812:00 p.m.STL - YUL
Nonstop2h 23mAir Canada
Deal found 15/5C$ 649

Ontario to St. Louis flights leaving soon

Find last-minute flight options from Ontario to St. Louis for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 409,532 searches. Data last updated 16 mayo 2024.
Have a look at some of the last-minute flights available departing from Ontario to St. Louis. It's wise to confirm all flight details are correct before booking.
mié. 22/57:50 a.m.YYZ - STL
1 stop13h 20mMultiple Airlines
mié. 29/59:10 p.m.STL - YYZ
1 stop25h 16mMultiple Airlines
Deal found 15/5C$ 384
dom. 26/56:30 a.m.YYZ - STL
1 stop11h 59mMultiple Airlines
mar. 18/67:29 p.m.STL - YYZ
1 stop10h 06mMultiple Airlines
Deal found 15/5C$ 422
vie. 24/58:15 p.m.YYZ - STL
1 stop15h 13mMultiple Airlines
jue. 20/67:45 a.m.STL - YYZ
2 stops10h 50mMultiple Airlines
Deal found 15/5C$ 440
vie. 24/510:40 a.m.YYZ - STL
1 stop24h 48mMultiple Airlines
mié. 19/61:55 p.m.STL - YYZ
1 stop15h 48mMultiple Airlines
Deal found 15/5C$ 441
vie. 24/58:15 p.m.YYZ - STL
1 stop15h 13mMultiple Airlines
sáb. 22/611:34 a.m.STL - YYZ
1 stop10h 52mMultiple Airlines
Deal found 15/5C$ 443
sáb. 25/58:30 p.m.YYZ - STL
1 stop11h 38mMultiple Airlines
jue. 20/67:45 a.m.STL - YYZ
2 stops10h 50mMultiple Airlines
Deal found 15/5C$ 446
sáb. 25/58:30 p.m.YYZ - STL
1 stop11h 38mMultiple Airlines
sáb. 22/611:34 a.m.STL - YYZ
1 stop10h 52mMultiple Airlines
Deal found 15/5C$ 450
sáb. 25/58:30 p.m.YYZ - STL
1 stop11h 38mMultiple Airlines
mar. 18/67:45 a.m.STL - YYZ
2 stops10h 50mMultiple Airlines
Deal found 15/5C$ 463
vie. 24/510:40 a.m.YYZ - STL
1 stop24h 48mMultiple Airlines
dom. 16/66:30 a.m.STL - YYZ
1 stop10h 02mMultiple Airlines
Deal found 15/5C$ 489

One-way flights to St. Louis from Ontario

Search for one-way flight options from Ontario to St. Louis. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 409,532 searches. Data last updated 16 mayo 2024.
Some of the best available deals we've found on one-way flights from Ontario to St. Louis. Users in need of a round-trip flight from Ontario to St. Louis instead should update the search form at the top of page.
jue. 6/64:15 p.m.YYZ - STL
1 stop15h 52mMultiple Airlines
Deal found 15/5C$ 214
vie. 21/68:15 p.m.YYZ - STL
1 stop15h 19mMultiple Airlines
Deal found 15/5C$ 230
vie. 21/68:15 p.m.YYZ - STL
1 stop15h 19mMultiple Airlines
Deal found 15/5C$ 232
mié. 19/68:00 p.m.YYZ - STL
1 stop15h 42mMultiple Airlines
Deal found 15/5C$ 248
vie. 12/77:50 a.m.YYZ - STL
1 stop25h 46mMultiple Airlines
Deal found 16/5C$ 256
vie. 21/64:15 p.m.YYZ - STL
2 stops26h 13mMultiple Airlines
Deal found 15/5C$ 286
vie. 21/68:15 p.m.YYZ - STL
2 stops22h 13mMultiple Airlines
Deal found 15/5C$ 287
jue. 8/88:15 p.m.YYZ - STL
1 stop13h 21mMultiple Airlines
Deal found 15/5C$ 289
jue. 6/66:17 a.m.YYZ - STL
1 stop6h 31mDelta
Deal found 15/5C$ 296

Find flights from Ontario to St. Louis within your budget

Customize your flight search to find flights from Ontario to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 409,532 searches. Data last updated 16 mayo 2024.

Fly from

Any airport

Fly to

Any airport

Budget

C$ 518 - C$ 597

Route

Depart

Return

Price

Montreal Pierre Elliott Trudeau IntlLambert-St Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

sáb. 7/9

Nonstop2h 35m

Lambert-St Louis

mar. 10/9

2 stops15h 53m

C$ 518

Montreal Pierre Elliott Trudeau IntlLambert-St Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

vie. 30/8

1 stop4h 52m

Lambert-St Louis

dom. 1/9

1 stop6h 14m

C$ 525

Montreal Pierre Elliott Trudeau IntlLambert-St Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

sáb. 7/9

1 stop7h 59m

Lambert-St Louis

mar. 10/9

1 stop4h 02m

C$ 527

Toronto Pearson IntlLambert-St Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

mié. 19/6

1 stop9h 16m

Lambert-St Louis

lun. 24/6

1 stop7h 19m

C$ 527

Montreal Pierre Elliott Trudeau IntlLambert-St Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

vie. 16/8

1 stop9h 20m

Lambert-St Louis

mié. 21/8

1 stop16h 14m

C$ 535

Toronto Pearson IntlLambert-St Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

vie. 24/5

2 stops30h 45m

Lambert-St Louis

dom. 16/6

1 stop10h 02m

C$ 538

Toronto Pearson IntlLambert-St Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

vie. 24/5

1 stop24h 48m

Lambert-St Louis

mar. 18/6

2 stops17h 48m

C$ 545

Toronto Pearson IntlLambert-St Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

mié. 17/7

1 stop5h 45m

Lambert-St Louis

sáb. 20/7

1 stop5h 30m

C$ 576

Toronto Pearson IntlLambert-St Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

mar. 18/6

Nonstop2h 06m

Lambert-St Louis

mar. 18/6

1 stop5h 27m

C$ 597

Flights are sorted by cheapest first

Deals found on 14/5

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated 16 mayo 2024.
See what other customers who have flown with United Airlines, Delta and American Airlines from Ontario to St. Louis have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,673 reviews
Check prices

Crew

8.6

Overall

8.0

Comfort

7.9

Food

7.4

Entertainment

8.0

Boarding

8.2

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Delta
8.0
Very good
10,673 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Crew

8.6

Overall

8.0

Comfort

7.9

Food

7.4

Entertainment

8.0

Boarding

8.2

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

WestJet
7.5
Good
2,919 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Crew

8.6

Overall

8.0

Comfort

7.9

Food

7.4

Entertainment

8.0

Boarding

8.2

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

United Airlines
7.4
Good
10,924 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Crew

8.6

Overall

8.0

Comfort

7.9

Food

7.4

Entertainment

8.0

Boarding

8.2

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

American Airlines
7.3
Good
14,514 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Crew

8.6

Overall

8.0

Comfort

7.9

Food

7.4

Entertainment

8.0

Boarding

8.2

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Sun Country Air
7.2
Good
630 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Crew

8.6

Overall

8.0

Comfort

7.9

Food

7.4

Entertainment

8.0

Boarding

8.2

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Related info for your journey

Find useful and relevant information for your journey from Ontario to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to St. Louis from Ontario?

    Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Ontario. Lambert-St Louis is conveniently located just 20.4 km from St. Louis’s city centre.

  • Can I find flights from Region of Ontario to St. Louis for under C$ 600 on Cheapflights?

    Yes, there are multiple flights from Region of Ontario to St. Louis for under C$ 600. The cheapest flight booked recently is on United Airlines for just C$ 518, but on average you can expect to pay C$ 546.

  • Are there direct flights from Region of Ontario to St. Louis for under C$ 600 on Cheapflights?

    Cheapflights has 20 direct flights from Region of Ontario to St. Louis under C$ 600. A good price for a direct flight from Region of Ontario to St. Louis is less than C$ 681.

  • Are there last-minute flights available from Region of Ontario to St. Louis for under C$ 400?

    There are currently 20+ open flights from Region of Ontario to St. Louis within the next 7 days for less than C$ 400.

  • What are the cheapest airlines to fly from Region of Ontario to St. Louis one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as C$ 296. Users have also found prices from C$ 311 and C$ 324 on American Airlines and Air Canada, respectively.

  • What are the most popular routes from Region of Ontario to St. Louis?

    While some choose either Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis or Ottawa - Lambert-St Louis, Toronto Pearson Intl - Lambert-St Louis is the most popular route from Region of Ontario to St. Louis.

  • What are the most reliable airlines from Region of Ontario to St. Louis?

    Consider Air Canada (74%), Jazz (74%) or United Airlines (74%) when booking your flight. These represent the most reliable airlines when flying from Region of Ontario to St. Louis.

  • What are the cheapest flights from Region of Ontario to St. Louis?

    Looking for the cheapest flight from Region of Ontario to St. Louis? While on average our users pay C$ 671, our data indicates the cheapest price to be C$ 440. The most popular route (Toronto Pearson Intl - Lambert-St Louis), is priced around C$ 358.

  • What does YYZ to STL mean?

    This is defined as Toronto Pearson Intl Airport (YYZ) and Lambert-St Louis Airport (STL). Codes like Lambert-St Louis Airport are often used to just call airports uniquely. Ottawa Airport (YOW), Toronto Island Airport (YTZ), Hamilton Airport (YHM), London Airport (YXU), Toronto Kitchener-Waterloo Airport (YKF) are other airports near this flight route and their unique identifiers/IATA codes.

  • Can I find deals for flights from Ontario to St. Louis that include extra baggage allowance?

    The amount of baggage you can bring on your Ontario to St. Louis flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Ontario to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to St. Louis flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Ontario to St. Louis that include hotel bookings?

    Yes. In addition to deals on Ontario to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to St. Louis.

  • Can I find deals for business class flights from Ontario to St. Louis?

    Yes. Cheapflights offers flight deals from Ontario to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Ontario to St. Louis that allow pets onboard?

    Many airlines flying from Ontario to St. Louis offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Ontario to St. Louis?

    Yes, you can often find last-minute deals on Ontario to St. Louis flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Region of Ontario to St. Louis flight deals updated?

    The Region of Ontario to St. Louis flight deals you see on this page were last updated on 16/5.

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Alternative routes for Ontario to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.

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Top 2 airlines flying from Ontario to St. Louis

Discover the top 2 airlines that operate flights from Ontario to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 409,532 searches. Data last updated 16 mayo 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 386AverageC$ 616FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 470AverageC$ 678FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Vancouver to Kelowna flights
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Halifax to Orlando flights
Vancouver to Punta Cana flights
Edmonton to Montreal flights
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Toronto to Philippines flights
Windsor, Ontario to Ottawa flights
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Region of Ontario to London Stansted Airport flights

Search flights from Ontario to St. Louis by cabin class

Find flights from Ontario to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
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Prem Econ Class
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Hourly flight availability from Ontario to St. Louis

Find hourly flight availability from Ontario to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 mayo 2024.
0%of flight departuresEarly morningMidnight to 6 am
0%of flight departuresMorning6 am to noon
100%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

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Fly with Cheapflights

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How does Cheapflights help users find flights from Ontario to St. Louis?

When you search for this flight from Ontario to St. Louis, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Ontario to St. Louis?

Cheapflights helps you find that perfect flight to St. Louis from Ontario by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Ontario to St. Louis with no change fees?

Certainly. Search results for flights to St. Louis from Ontario shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Ontario to St. Louis become cheaper?

Yes! Start tracking prices for Ontario to St. Louis flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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