What are the cheapest airlines to fly from Quebec to St. Louis one-way?

C$ 301 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Delta and Air Canada, with prices starting from C$ 350 and C$ 417, respectively.

What are the most popular routes from Quebec to St. Louis?

Most travellers choose Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis, Ottawa - Lambert-St Louis or Québec City - Lambert-St Louis when deciding on the best route from Quebec to St. Louis.

What are the cheapest flights from Quebec to St. Louis?

On average you can expect to pay C$ 799 for a flight from Quebec to St. Louis. The cheapest flight overall is C$ 490 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis) is currently priced at C$ 581.

What are the most reliable airlines from Quebec to St. Louis?

No one likes to see their flight delayed. When booking a flight from Quebec to St. Louis consider choosing Jazz (100%), Air Canada (79%) or United Airlines (59%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from Quebec to St. Louis?

Consider Air Canada, United Airlines or WestJet when booking your flight. These represent the most popular airlines when flying from Quebec to St. Louis.

What is the cheapest month to fly from Quebec to St. Louis?

Flights from Quebec to St. Louis lean towards being more expensive in May. Prices are generally better when you fly from Quebec to St. Louis in July, with the cheapest ticket starting at C$ 465.

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

Located just 20.4 km from the city centre, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from Quebec.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Quebec 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.

C$ 290+ Flights from Quebec to St. Louis

Cheap flight deals from Quebec to St. Louis

Round-trip from	C$ 455
One-way from	C$ 290
Popular in	May
Cheapest in	July
Average price	C$ 722
Good round-trip deal	C$ 1,098 or less
Good one-way deal	C$ 490 or less

American Airlines
25/9-29/9
2 total stops
18h 30m total
Quebec to St. Louis

Search Deals

29/7
2 total stops
28h 44m total
Quebec to St. Louis

Search Deals

Highest demand for flights based on searches. 7% potential increase in price (C$ 81 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (C$ 30 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in June 2025

Search Deals

Price to beat on a round-trip flight from Quebec to Lambert-St Louis.

Search Deals

Price to beat on a one-way flight from Quebec to Lambert-St Louis.

Search Deals

Find flight deals from Quebec to St. Louis

Cheapest flights from Quebec to St. Louis
Explore the most affordable flight options available from Quebec to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.

Thu 25/912:30 p.m.YUL - STL

1 stop8h 55mAmerican Airlines

Mon 29/95:55 a.m.STL - YUL

1 stop9h 35mAmerican Airlines

Deal found 11/6C$ 455

Thu 10/71:10 p.m.YUL - STL

2 stops21h 42mMultiple Airlines

Thu 17/710:47 a.m.STL - YUL

3 stops26h 03mMultiple Airlines

Deal found 12/6C$ 537

Thu 28/86:00 a.m.YUL - STL

2 stops11h 06mDelta

Tue 2/912:00 p.m.STL - YUL

1 stop8h 48mDelta

Deal found 11/6C$ 626

Mon 23/68:00 a.m.YUL - STL

1 stop5h 36mAir Canada

Sun 29/61:30 p.m.STL - YUL

Nonstop2h 30mAir Canada

Deal found 10/6C$ 643

Thu 19/64:30 p.m.YUL - STL

1 stop5h 45mUnited Airlines

Thu 26/68:00 a.m.STL - YUL

1 stop8h 26mUnited Airlines

Deal found 12/6C$ 733

Wed 9/75:25 p.m.YOW - STL

1 stop5h 10mUnited Airlines

Wed 16/75:00 a.m.STL - YOW

1 stop15h 35mUnited Airlines

Deal found 11/6C$ 798

Fri 1/810:00 a.m.YOW - STL

1 stop6h 21mAir Canada

Tue 5/81:30 p.m.STL - YOW

1 stop4h 35mAir Canada

Deal found 11/6C$ 800

Mon 23/64:10 p.m.YQB - STL

1 stop8h 44mAmerican Airlines

Wed 2/74:58 p.m.STL - YQB

1 stop21h 32mAmerican Airlines

Deal found 11/6C$ 800

Thu 25/96:45 a.m.YUL - STL

2 stops28h 55mWestJet

Mon 29/91:30 p.m.STL - YUL

2 stops10h 07mWestJet

Deal found 10/6C$ 861

Sun 27/75:20 a.m.YQB - STL

2 stops11h 27mUnited Airlines

Sun 3/84:00 p.m.STL - YQB

1 stop5h 10mUnited Airlines

Deal found 12/6C$ 946

Tue 17/64:10 p.m.YOW - STL

3 stops25h 35mMultiple Airlines

Thu 19/69:50 a.m.STL - YOW

3 stops13h 32mMultiple Airlines

Deal found 11/6C$ 1,027

Sun 27/72:50 p.m.YQB - STL

3 stops20h 02mMultiple Airlines

Sun 3/810:47 a.m.STL - YQB

3 stops30h 53mMultiple Airlines

Deal found 12/6C$ 1,045

Best flights from Quebec to St. Louis
Discover carefully curated flight deals from Quebec to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 12 June 2025.

Thu 25/912:30 p.m.YUL - STL

1 stop8h 55mAmerican Airlines

Mon 29/95:55 a.m.STL - YUL

1 stop9h 35mAmerican Airlines

Deal found 11/6C$ 455

Thu 10/71:10 p.m.YUL - STL

2 stops21h 42mMultiple Airlines

Thu 17/710:47 a.m.STL - YUL

3 stops26h 03mMultiple Airlines

Deal found 12/6C$ 537

Thu 28/86:00 a.m.YUL - STL

2 stops11h 06mDelta

Tue 2/912:00 p.m.STL - YUL

1 stop8h 48mDelta

Deal found 11/6C$ 626

Mon 23/68:00 a.m.YUL - STL

1 stop5h 36mAir Canada

Sun 29/61:30 p.m.STL - YUL

Nonstop2h 30mAir Canada

Deal found 10/6C$ 643

Wed 6/86:10 p.m.YUL - STL

Nonstop2h 50mUnited Airlines

Mon 18/88:00 a.m.STL - YUL

1 stop8h 26mUnited Airlines

Deal found 11/6C$ 744

Thu 25/96:45 a.m.YUL - STL

2 stops28h 55mWestJet

Mon 29/91:30 p.m.STL - YUL

2 stops10h 07mWestJet

Deal found 10/6C$ 861

Wed 9/76:05 a.m.YOW - STL

2 stops10h 42mUnited Airlines

Wed 16/76:33 a.m.STL - YOW

1 stop14h 02mUnited Airlines

Deal found 11/6C$ 798

Fri 1/810:00 a.m.YOW - STL

1 stop6h 21mAir Canada

Tue 5/81:30 p.m.STL - YOW

1 stop4h 35mAir Canada

Deal found 11/6C$ 800

Mon 23/64:10 p.m.YQB - STL

1 stop8h 44mAmerican Airlines

Wed 2/74:58 p.m.STL - YQB

1 stop21h 32mAmerican Airlines

Deal found 11/6C$ 800

Sun 27/75:20 a.m.YQB - STL

2 stops11h 27mUnited Airlines

Sun 3/84:00 p.m.STL - YQB

1 stop5h 10mUnited Airlines

Deal found 12/6C$ 946

Sun 27/72:50 p.m.YQB - STL

3 stops20h 02mMultiple Airlines

Sun 3/810:47 a.m.STL - YQB

3 stops30h 53mMultiple Airlines

Deal found 12/6C$ 1,045

Sun 27/73:18 p.m.YQB - STL

1 stop8h 27mAir Canada

Sun 3/84:00 p.m.STL - YQB

1 stop5h 10mAir Canada

Deal found 12/6C$ 1,259

Direct flights from Quebec to St. Louis
Explore direct flight options from Quebec to St. Louis based on user searches, and compare prices and availability for your desired travel dates. Data last updated 12 June 2025.

Fri 1/86:10 p.m.YUL - STL

Nonstop2h 50mAir Canada

Sun 3/81:30 p.m.STL - YUL

Nonstop2h 30mAir Canada

Deal found 11/6C$ 737

Fri 11/77:00 p.m.YUL - STL

Nonstop2h 50mMultiple Airlines

Fri 22/81:30 p.m.STL - YUL

Nonstop2h 30mMultiple Airlines

Deal found 12/6C$ 1,016

Fri 11/77:00 p.m.YUL - STL

Nonstop2h 50mUnited Airlines

Fri 22/81:30 p.m.STL - YUL

Nonstop2h 30mUnited Airlines

Deal found 12/6C$ 1,025

Last-minute flights from Quebec to St. Louis
Discover last-minute flight deals from Quebec to St. Louis. Data last updated 12 June 2025 and is based on user searches.

Tue 17/64:10 p.m.YOW - STL

3 stops25h 35mMultiple Airlines

Thu 19/69:50 a.m.STL - YOW

3 stops13h 32mMultiple Airlines

Deal found 11/6C$ 1,027

Tue 17/612:20 p.m.YOW - STL

2 stops12h 02mDelta

Thu 19/63:42 p.m.STL - YOW

2 stops7h 40mDelta

Deal found 11/6C$ 1,188

Tue 17/63:17 p.m.YOW - STL

1 stop7h 08mUnited Airlines

Thu 19/67:30 a.m.STL - YOW

1 stop4h 40mUnited Airlines

Deal found 11/6C$ 1,241

Thu 19/64:30 p.m.YUL - STL

1 stop5h 45mUnited Airlines

Thu 26/68:00 a.m.STL - YUL

1 stop8h 26mUnited Airlines

Deal found 12/6C$ 733

Thu 19/66:45 a.m.YUL - STL

2 stops35h 19mMultiple Airlines

Thu 26/69:50 a.m.STL - YUL

3 stops13h 47mMultiple Airlines

Deal found 12/6C$ 757

Mon 23/66:45 p.m.YUL - STL

1 stop6h 06mDelta

Tue 15/76:00 a.m.STL - YUL

1 stop9h 07mDelta

Deal found 10/6C$ 633

Mon 23/68:00 a.m.YUL - STL

1 stop5h 36mAir Canada

Sun 29/61:30 p.m.STL - YUL

Nonstop2h 30mAir Canada

Deal found 10/6C$ 643

Mon 23/64:10 p.m.YQB - STL

1 stop8h 44mAmerican Airlines

Wed 2/74:58 p.m.STL - YQB

1 stop21h 32mAmerican Airlines

Deal found 11/6C$ 800

Mon 23/66:45 a.m.YUL - STL

2 stops18h 06mWestJet

Tue 15/75:23 p.m.STL - YUL

2 stops36h 45mWestJet

Deal found 10/6C$ 878

Wed 9/76:05 a.m.YOW - STL

2 stops10h 42mUnited Airlines

Wed 16/76:33 a.m.STL - YOW

1 stop14h 02mUnited Airlines

Deal found 11/6C$ 798

Thu 10/71:10 p.m.YUL - STL

2 stops21h 42mMultiple Airlines

Thu 17/710:47 a.m.STL - YUL

3 stops26h 03mMultiple Airlines

Deal found 12/6C$ 537

Thu 10/710:30 a.m.YUL - STL

2 stops14h 21mAmerican Airlines

Wed 27/87:23 a.m.STL - YUL

1 stop8h 18mAmerican Airlines

Deal found 12/6C$ 662

One-way flights from Quebec to St. Louis
Search for one-way flight options from Quebec to St. Louis. Find affordable one-way fares based on user searches. Data last updated 12 June 2025.

Tue 29/76:45 a.m.YUL - STL

2 stops28h 44mMultiple Airlines

Deal found 10/6C$ 290

Fri 19/95:15 p.m.YUL - STL

1 stop17h 11mAmerican Airlines

Deal found 12/6C$ 301

Fri 25/73:50 p.m.YOW - STL

1 stop23h 49mMultiple Airlines

Deal found 10/6C$ 312

Fri 4/76:00 a.m.YUL - STL

1 stop10h 17mDelta

Deal found 10/6C$ 350

Tue 23/94:14 p.m.YQB - STL

1 stop24h 10mAmerican Airlines

Deal found 12/6C$ 392

Sun 14/96:10 p.m.YUL - STL

Nonstop2h 47mAir Canada

Deal found 12/6C$ 417

Tue 30/94:55 p.m.YQB - STL

2 stops18h 54mUnited Airlines

Deal found 11/6C$ 431

Sun 14/96:00 a.m.YUL - STL

2 stops9h 19mUnited Airlines

Deal found 10/6C$ 451

Tue 23/94:35 p.m.YQB - STL

3 stops23h 18mMultiple Airlines

Deal found 12/6C$ 860

Cheapflights Fare Finder

Use the filters below to find and compare flights from Quebec to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 25/9

12:30 p.m.-8:25 p.m.

1 stop8h 55m

Lambert-St Louis

Mon 29/9

5:55 a.m.-4:30 p.m.

1 stop9h 35m

C$ 455

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 10/7

1:10 p.m.-9:52 a.m.

2 stops21h 42m

Lambert-St Louis

Thu 17/7

10:47 a.m.-1:50 p.m.

3 stops26h 03m

C$ 537

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 28/8

6:00 a.m.-4:06 p.m.

2 stops11h 06m

Lambert-St Louis

Tue 2/9

12:00 p.m.-9:48 p.m.

1 stop8h 48m

C$ 626

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mon 23/6

8:00 a.m.-12:36 p.m.

1 stop5h 36m

Lambert-St Louis

Sun 29/6

1:30 p.m.-5:00 p.m.

Nonstop2h 30m

C$ 643

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 6/8

6:10 p.m.-8:00 p.m.

Nonstop2h 50m

Lambert-St Louis

Mon 18/8

8:00 a.m.-5:26 p.m.

1 stop8h 26m

C$ 744

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Wed 9/7

5:25 p.m.-9:35 p.m.

1 stop5h 10m

Lambert-St Louis

Wed 16/7

5:00 a.m.-9:35 p.m.

1 stop15h 35m

C$ 798

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 1/8

10:00 a.m.-3:21 p.m.

1 stop6h 21m

Lambert-St Louis

Tue 5/8

1:30 p.m.-7:05 p.m.

1 stop4h 35m

C$ 800

Québec CitySt. Louis

YQB - STL

YQBSTL

Québec City

Mon 23/6

4:10 p.m.-11:54 p.m.

1 stop8h 44m

Lambert-St Louis

Wed 2/7

4:58 p.m.-3:30 p.m.

1 stop21h 32m

C$ 800

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 25/9

6:45 a.m.-10:40 a.m.

2 stops28h 55m

Lambert-St Louis

Mon 29/9

1:30 p.m.-12:37 a.m.

2 stops10h 07m

C$ 861

Québec CitySt. Louis

YQB - STL

YQBSTL

Québec City

Sun 27/7

5:20 a.m.-3:47 p.m.

2 stops11h 27m

Lambert-St Louis

Sun 3/8

8:00 a.m.-10:10 p.m.

2 stops13h 10m

C$ 946

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/6

Showing 1-10 of 21 results

Best time to book a flight from Quebec to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Quebec with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Quebec to St. Louis

What is the cheapest month to book a flight from Quebec to St. Louis?

Currently, January is the cheapest month in which you can book a flight from Quebec to St. Louis (average of C$ 365). Flying from Quebec to St. Louis in September is currently the most expensive (average of C$ 491). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from QC to STL?

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

Rainfall in St. Louis by month

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 mm per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

Temperature in St. Louis by month

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

Reviews of airlines servicing St. Louis

See what other customers who have flown with Delta, United Airlines and American Airlines from Quebec 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

7,946 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,946 reviews

Delta

8.0

Very good

7,946 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,790 reviews

Delta

8.0

Very good

7,946 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,946 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

WestJet

7.2

Good

2,868 reviews

Delta

8.0

Very good

7,946 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Air Canada

7.1

Good

9,537 reviews

Delta

8.0

Very good

7,946 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What airport do you fly into for flights to St. Louis from Quebec?
Located just 20.4 km from the city centre, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from Quebec.
What are the cheapest airlines to fly from Quebec to St. Louis one-way?
C$ 301 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Delta and Air Canada, with prices starting from C$ 350 and C$ 417, respectively.
What are the most popular routes from Quebec to St. Louis?
Most travellers choose Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis, Ottawa - Lambert-St Louis or Québec City - Lambert-St Louis when deciding on the best route from Quebec to St. Louis.
What are the most reliable airlines from Quebec to St. Louis?
No one likes to see their flight delayed. When booking a flight from Quebec to St. Louis consider choosing Jazz (100%), Air Canada (79%) or United Airlines (59%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Quebec to St. Louis?
On average you can expect to pay C$ 799 for a flight from Quebec to St. Louis. The cheapest flight overall is C$ 490 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis) is currently priced at C$ 581.
Can I find deals for flights from Quebec to St. Louis that include hotel bookings?
Yes. In addition to deals on Quebec to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Quebec to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Quebec to St. Louis.
Can I find deals for business class flights from Quebec to St. Louis?
Yes. Cheapflights offers flight deals from Quebec 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.
What is the cheapest month to book a flight from Quebec to St. Louis?
Currently, January is the cheapest month in which you can book a flight from Quebec to St. Louis (average of C$ 365). Flying from Quebec to St. Louis in September is currently the most expensive (average of C$ 491). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Chesterfield

St. Peters

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Quebec to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	CheapestC$ 511	AverageC$ 665	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	CheapestC$ 586	AverageC$ 738	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
WestJet	CheapestC$ 733	AverageC$ 1,010	FlexibilityNo cancel fee	On-time60%	Search WestJet flights

Fly with Cheapflights

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

Cheapflights makes it easy to find Quebec to St. Louis flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Quebec to St. Louis for you. Better yet — we are completely free to use.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Quebec to St. Louis flexibly with Cheapflights today.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to St. Louis from Quebec today and book when prices fit your budget.

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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Quebec to St. Louis from C$ 290

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 29/7. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Quebec to St. Louis

Keep the following information in mind while searching for Quebec to St. Louis flight deals. Data was last updated 12 June 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Quebec to St. Louis

Cheapest flights from Quebec to St. LouisExplore the most affordable flight options available from Quebec to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.

Explore the most affordable flight options available from Quebec to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Quebec to St. Louis that are best for you.

Best time to book a flight from Quebec to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Quebec with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Quebec to St. Louis

What is the cheapest month to book a flight from Quebec to St. Louis?

What is the cheapest time of day to fly from QC to STL?

Find hourly flight availability from Quebec 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 12 June 2025.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

Reviews of airlines servicing St. Louis

See what other customers who have flown with Delta, United Airlines and American Airlines from Quebec to St. Louis have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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Top 3 airlines flying from Quebec to St. Louis

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Cheapest flights from Quebec to St. Louis
Explore the most affordable flight options available from Quebec to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.