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Cheap flights from Seattle to Ontario from C$ 123

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 18/6. 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.
SEA — YYZ
13 May — 20 May1
1 adult
Mon 13/5
Mon 20/5

How far in advance should I book a flight from Seattle to Region of Ontario?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 27 days in advance, which can save you up to 88% on flights from Seattle to Region of Ontario compared to booking the week you need them. Waiting 27 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at C$ 976. For sooner than that we have options available in the next 3 days from C$ 1,030.

What is the cheapest month to fly from Seattle to Region of Ontario?

January is one of the best times of the year to fly to Region of Ontario from Seattle. Prices for January average C$ 827 per person but you can even find prices for as low as C$ 271. The most expensive prices can be found in the month of July. Opting for a January flight can save you 6% on your journey compared to booking in July

When is the cheapest time to fly from Seattle to Region of Ontario (SEA - ON)?

When flying from Seattle to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap WestJet flights from Seattle to Ontario

Explore cheap flight options specifically provided by WestJet for the route between Seattle and Ontario. 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 441,849 searches. Data last updated 8 May 2024.
Find some of the cheapest WestJet flights travelling from Seattle to Ontario. Come back soon if you're not finding the exact deal you're looking for.
Sun 1/97:00 a.m.SEA - YYZ
2 stops12h 56mWestJet
Sun 15/92:00 p.m.YYZ - SEA
2 stops9h 26mWestJet
Deal found 8/5C$ 452
Thu 29/83:30 p.m.SEA - YYZ
2 stops12h 15mWestJet
Sun 15/92:00 p.m.YYZ - SEA
2 stops9h 26mWestJet
Deal found 8/5C$ 456
Mon 26/83:30 p.m.SEA - YYZ
2 stops11h 36mWestJet
Sun 15/92:00 p.m.YYZ - SEA
2 stops9h 26mWestJet
Deal found 8/5C$ 457
Mon 26/83:30 p.m.SEA - YYZ
2 stops11h 36mWestJet
Wed 11/912:00 p.m.YYZ - SEA
2 stops11h 21mWestJet
Deal found 8/5C$ 459
Wed 28/87:00 a.m.SEA - YYZ
2 stops11h 00mWestJet
Sat 14/93:45 p.m.YYZ - SEA
1 stop7h 36mWestJet
Deal found 8/5C$ 460
Mon 26/83:30 p.m.SEA - YYZ
2 stops11h 36mWestJet
Sat 14/93:45 p.m.YYZ - SEA
1 stop7h 36mWestJet
Deal found 8/5C$ 463
Tue 27/87:00 a.m.SEA - YYZ
1 stop7h 19mWestJet
Sun 15/93:45 p.m.YYZ - SEA
1 stop7h 41mWestJet
Deal found 8/5C$ 464
Wed 28/87:00 a.m.SEA - YYZ
2 stops11h 00mWestJet
Sun 15/93:45 p.m.YYZ - SEA
1 stop7h 41mWestJet
Deal found 8/5C$ 466
Tue 27/87:00 a.m.SEA - YYZ
1 stop7h 19mWestJet
Mon 9/96:30 a.m.YYZ - SEA
2 stops11h 16mWestJet
Deal found 8/5C$ 467

Cheap Alaska Airlines flights from Seattle to Ontario

Explore cheap flight options specifically provided by Alaska Airlines for the route between Seattle and Ontario. 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 441,849 searches. Data last updated 8 May 2024.
Browse through some of the cheapest Alaska Airlines flights travelling from Seattle to Ontario. Ensure the flight price, dates, time, and airline match your criteria before you book.
Mon 27/56:50 a.m.SEA - YYZ
Nonstop4h 40mAlaska Airlines
Tue 11/63:40 p.m.YYZ - SEA
Nonstop5h 15mAlaska Airlines
Deal found 8/5C$ 540
Fri 17/56:50 a.m.SEA - YYZ
Nonstop4h 40mAlaska Airlines
Sat 29/63:40 p.m.YYZ - SEA
Nonstop5h 20mAlaska Airlines
Deal found 7/5C$ 781
Fri 17/56:50 a.m.SEA - YYZ
Nonstop4h 40mAlaska Airlines
Mon 20/53:40 p.m.YYZ - SEA
Nonstop5h 15mAlaska Airlines
Deal found 7/5C$ 812
Fri 17/56:50 a.m.SEA - YYZ
Nonstop4h 40mAlaska Airlines
Mon 20/53:40 p.m.YYZ - SEA
Nonstop5h 15mAlaska Airlines
Deal found 7/5C$ 849
Sat 18/56:50 a.m.SEA - YYZ
Nonstop4h 40mAlaska Airlines
Wed 5/63:40 p.m.YYZ - SEA
Nonstop5h 15mAlaska Airlines
Deal found 8/5C$ 1,552
Sat 18/56:50 a.m.SEA - YYZ
Nonstop4h 40mAlaska Airlines
Tue 11/67:00 a.m.YYZ - SEA
1 stop11h 18mAlaska Airlines
Deal found 8/5C$ 1,572
Sat 18/56:50 a.m.SEA - YYZ
Nonstop4h 40mAlaska Airlines
Mon 10/67:00 a.m.YYZ - SEA
1 stop11h 18mAlaska Airlines
Deal found 8/5C$ 1,641
Sat 18/56:50 a.m.SEA - YYZ
Nonstop4h 40mAlaska Airlines
Fri 7/63:40 p.m.YYZ - SEA
Nonstop5h 15mAlaska Airlines
Deal found 8/5C$ 1,673
Thu 16/56:50 a.m.SEA - YYZ
Nonstop4h 40mAlaska Airlines
Sat 8/63:40 p.m.YYZ - SEA
Nonstop5h 15mAlaska Airlines
Deal found 8/5C$ 3,106

Cheap Seattle to Ontario flights in May & June 2024

Find cheap flight options from Seattle to Ontario specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 441,849 searches. Prices were last updated on 8 May 2024.
The lowest fares we've come across on flights travelling from Seattle to Ontario in May and June 2024. Check back soon for alternative fares.
Tue 4/69:35 a.m.SEA - YYZ
1 stop18h 00mMultiple Airlines
Tue 11/68:20 p.m.YYZ - SEA
1 stop15h 12mMultiple Airlines
Deal found 7/5C$ 319
Thu 6/69:28 a.m.SEA - YYZ
1 stop18h 07mMultiple Airlines
Thu 13/68:20 p.m.YYZ - SEA
1 stop15h 12mMultiple Airlines
Deal found 7/5C$ 356
Sat 1/62:49 p.m.SEA - YYZ
1 stop12h 46mMultiple Airlines
Tue 4/68:20 p.m.YYZ - SEA
1 stop15h 12mMultiple Airlines
Deal found 7/5C$ 366
Sat 1/69:35 a.m.SEA - YYZ
1 stop18h 00mMultiple Airlines
Tue 4/68:20 p.m.YYZ - SEA
1 stop15h 12mMultiple Airlines
Deal found 8/5C$ 370
Thu 30/59:35 a.m.SEA - YYZ
1 stop18h 00mMultiple Airlines
Mon 3/68:00 p.m.YYZ - SEA
1 stop15h 45mMultiple Airlines
Deal found 7/5C$ 389
Mon 3/69:40 p.m.SEA - YYZ
1 stop29h 55mMultiple Airlines
Mon 10/68:00 p.m.YYZ - SEA
1 stop15h 59mMultiple Airlines
Deal found 8/5C$ 399
Tue 4/69:35 a.m.SEA - YYZ
1 stop18h 00mMultiple Airlines
Tue 11/612:00 p.m.YYZ - SEA
2 stops11h 20mMultiple Airlines
Deal found 7/5C$ 400
Sat 1/62:49 p.m.SEA - YYZ
1 stop12h 46mMultiple Airlines
Tue 11/68:00 p.m.YYZ - SEA
1 stop15h 32mMultiple Airlines
Deal found 6/5C$ 401
Tue 28/59:40 p.m.SEA - YYZ
1 stop30h 02mMultiple Airlines
Tue 4/68:00 p.m.YYZ - SEA
1 stop15h 32mMultiple Airlines
Deal found 7/5C$ 404

Seattle to Ontario 2024 flight deals

Discover exclusive flight deals for travel between Seattle and Ontario in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 441,849 searches. Data last updated 8 May 2024.
The lowest fares we've come across on flights travelling from Seattle to Ontario in May and June 2024. Check back soon for alternative fares.
Tue 4/69:35 a.m.SEA - YYZ
1 stop18h 00mMultiple Airlines
Tue 11/68:20 p.m.YYZ - SEA
1 stop15h 12mMultiple Airlines
Deal found 7/5C$ 319
Thu 6/69:28 a.m.SEA - YYZ
1 stop18h 07mMultiple Airlines
Thu 13/68:20 p.m.YYZ - SEA
1 stop15h 12mMultiple Airlines
Deal found 7/5C$ 356
Sat 1/62:49 p.m.SEA - YYZ
1 stop12h 46mMultiple Airlines
Tue 4/68:20 p.m.YYZ - SEA
1 stop15h 12mMultiple Airlines
Deal found 7/5C$ 366
Sat 1/69:35 a.m.SEA - YYZ
1 stop18h 00mMultiple Airlines
Tue 4/68:20 p.m.YYZ - SEA
1 stop15h 12mMultiple Airlines
Deal found 8/5C$ 370
Thu 30/59:35 a.m.SEA - YYZ
1 stop18h 00mMultiple Airlines
Mon 3/68:00 p.m.YYZ - SEA
1 stop15h 45mMultiple Airlines
Deal found 7/5C$ 389
Mon 3/69:40 p.m.SEA - YYZ
1 stop29h 55mMultiple Airlines
Mon 10/68:00 p.m.YYZ - SEA
1 stop15h 59mMultiple Airlines
Deal found 8/5C$ 399
Tue 4/69:35 a.m.SEA - YYZ
1 stop18h 00mMultiple Airlines
Tue 11/612:00 p.m.YYZ - SEA
2 stops11h 20mMultiple Airlines
Deal found 7/5C$ 400
Sat 1/62:49 p.m.SEA - YYZ
1 stop12h 46mMultiple Airlines
Tue 11/68:00 p.m.YYZ - SEA
1 stop15h 32mMultiple Airlines
Deal found 6/5C$ 401
Tue 28/59:40 p.m.SEA - YYZ
1 stop30h 02mMultiple Airlines
Tue 4/68:00 p.m.YYZ - SEA
1 stop15h 32mMultiple Airlines
Deal found 7/5C$ 404

Direct flights to Ontario from Seattle

Discover non-stop flight options from Seattle to Ontario. 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 441,849 searches. Data last updated 8 May 2024.
If you're seeking options on non-stop flights from Seattle to Ontario, check out these fares. If you're looking for other options for flights from Seattle to Ontario, make sure to update the search form at the top of page.
Tue 1/1011:35 a.m.SEA - YYZ
Nonstop4h 33mAir Canada
Mon 7/108:25 a.m.YYZ - SEA
Nonstop5h 21mAir Canada
Deal found 8/5C$ 524
Wed 5/66:50 a.m.SEA - YYZ
Nonstop4h 40mAlaska Airlines
Thu 6/63:40 p.m.YYZ - SEA
Nonstop5h 15mAlaska Airlines
Deal found 8/5C$ 534
Wed 28/811:10 p.m.SEA - YYZ
Nonstop4h 40mAir Canada
Tue 3/97:40 p.m.YYZ - SEA
Nonstop5h 21mAir Canada
Deal found 7/5C$ 538
Mon 27/56:50 a.m.SEA - YYZ
Nonstop4h 40mAlaska Airlines
Mon 10/63:40 p.m.YYZ - SEA
Nonstop5h 15mAlaska Airlines
Deal found 8/5C$ 540
Mon 9/911:10 p.m.SEA - YYZ
Nonstop4h 33mAir Canada
Mon 16/97:40 p.m.YYZ - SEA
Nonstop5h 21mAir Canada
Deal found 6/5C$ 557
Sun 11/87:00 a.m.SEA - YYZ
Nonstop4h 30mAlaska Airlines
Thu 15/83:40 p.m.YYZ - SEA
Nonstop5h 20mAlaska Airlines
Deal found 7/5C$ 644
Fri 31/56:50 a.m.SEA - YYZ
Nonstop4h 40mAlaska Airlines
Tue 11/63:40 p.m.YYZ - SEA
Nonstop5h 15mAlaska Airlines
Deal found 6/5C$ 656
Tue 28/56:50 a.m.SEA - YYZ
Nonstop4h 40mAlaska Airlines
Tue 4/63:40 p.m.YYZ - SEA
Nonstop5h 15mAlaska Airlines
Deal found 7/5C$ 671
Fri 23/811:10 p.m.SEA - YYZ
Nonstop4h 40mAir Canada
Mon 2/98:25 a.m.YYZ - SEA
Nonstop5h 26mAir Canada
Deal found 7/5C$ 686

Seattle to Ontario flights leaving soon

Find last-minute flight options from Seattle to Ontario 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 441,849 searches. Data last updated 8 May 2024.
Users seeking a last-minute flight from Seattle to Ontario should consider booking one of these fares. Tip: verify your flight details before completing your reservation.
Tue 14/59:40 p.m.SEA - YYZ
1 stop30h 02mMultiple Airlines
Tue 11/68:00 p.m.YYZ - SEA
1 stop15h 32mMultiple Airlines
Deal found 8/5C$ 492
Tue 14/510:40 a.m.SEA - YYZ
1 stop7h 21mAir Canada
Wed 5/67:40 p.m.YYZ - SEA
Nonstop5h 18mAir Canada
Deal found 8/5C$ 578
Thu 16/51:10 p.m.SEA - YYZ
1 stop8h 15mAir Canada
Mon 10/68:30 a.m.YYZ - SEA
1 stop8h 57mAir Canada
Deal found 8/5C$ 585
Fri 17/55:50 a.m.SEA - YYZ
1 stop7h 41mAir Canada
Mon 20/55:00 p.m.YYZ - SEA
1 stop8h 17mAir Canada
Deal found 6/5C$ 588
Fri 17/511:45 p.m.SEA - YYZ
1 stop7h 13mMultiple Airlines
Sat 8/64:45 p.m.YYZ - SEA
1 stop8h 32mMultiple Airlines
Deal found 8/5C$ 592
Fri 17/59:40 p.m.SEA - YYZ
3 stops20h 17mMultiple Airlines
Mon 20/510:15 p.m.YYZ - SEA
2 stops17h 41mMultiple Airlines
Deal found 7/5C$ 601
Wed 15/53:10 p.m.SEA - YYZ
1 stop12h 46mAir Canada
Sat 8/68:25 a.m.YYZ - SEA
Nonstop5h 18mAir Canada
Deal found 8/5C$ 604
Wed 15/511:45 p.m.SEA - YYZ
1 stop7h 13mUnited Airlines
Tue 11/66:25 p.m.YYZ - SEA
1 stop9h 21mUnited Airlines
Deal found 8/5C$ 605
Wed 15/53:10 p.m.SEA - YYZ
1 stop12h 46mAir Canada
Mon 10/68:05 a.m.YYZ - SEA
1 stop7h 22mAir Canada
Deal found 8/5C$ 611

One-way flights to Ontario from Seattle

Search for one-way flight options from Seattle to Ontario. 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 441,849 searches. Data last updated 8 May 2024.
Users in need of a one-way flight from Seattle to Ontario can choose from these deals. Users can also find round-trip Seattle to Ontario flights by using the search form above.
Tue 18/69:49 a.m.SEA - YYZ
1 stop17h 46mMultiple Airlines
Deal found 6/5C$ 123
Tue 18/69:49 a.m.SEA - YYZ
1 stop17h 46mMultiple Airlines
Deal found 8/5C$ 145
Tue 18/69:49 a.m.SEA - YYZ
1 stop17h 46mMultiple Airlines
Deal found 7/5C$ 147
Mon 17/68:59 p.m.SEA - YYZ
1 stop30h 36mMultiple Airlines
Deal found 7/5C$ 151
Wed 19/68:59 p.m.SEA - YYZ
1 stop30h 36mMultiple Airlines
Deal found 7/5C$ 163
Mon 3/69:40 p.m.SEA - YYZ
1 stop29h 55mMultiple Airlines
Deal found 7/5C$ 168
Wed 29/59:40 p.m.SEA - YYZ
1 stop29h 55mMultiple Airlines
Deal found 7/5C$ 179
Sat 1/62:49 p.m.SEA - YYZ
1 stop12h 46mMultiple Airlines
Deal found 7/5C$ 182
Wed 26/69:28 a.m.SEA - YYZ
1 stop18h 15mMultiple Airlines
Deal found 6/5C$ 184

Find flights from Seattle to Ontario within your budget

Customize your flight search to find flights from Seattle to Ontario 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 441,849 searches. Data last updated 8 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

C$ 319 - C$ 564

Route

Depart

Return

Price

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 4/6

1 stop18h 00m

Toronto Pearson Intl

Tue 11/6

1 stop15h 12m

C$ 319

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 6/6

1 stop18h 07m

Toronto Pearson Intl

Thu 13/6

1 stop15h 12m

C$ 356

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 1/6

1 stop12h 46m

Toronto Pearson Intl

Tue 4/6

1 stop15h 12m

C$ 366

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 1/6

1 stop18h 00m

Toronto Pearson Intl

Tue 4/6

1 stop15h 12m

C$ 370

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sun 1/9

2 stops12h 56m

Toronto Pearson Intl

Sun 15/9

2 stops9h 26m

C$ 452

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 27/5

Nonstop4h 40m

Toronto Pearson Intl

Tue 11/6

Nonstop5h 15m

C$ 540

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 3/8

Nonstop4h 40m

Toronto Pearson Intl

Sat 17/8

1 stop9h 25m

C$ 545

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 24/8

Nonstop4h 40m

Toronto Pearson Intl

Sun 8/9

1 stop8h 29m

C$ 560

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sun 25/8

1 stop8h 06m

Toronto Pearson Intl

Thu 12/9

1 stop9h 09m

C$ 564

Flights are sorted by cheapest first

Deals found on 7/5

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

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated 8 May 2024.
Read through reviews of airlines operating flights from Seattle to Ontario, such as WestJet, Alaska Airlines and Air Canada. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,141 reviews
Check prices

Boarding

8.2

Entertainment

7.3

Comfort

7.9

Crew

8.6

Food

7.3

Overall

8.1

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

Alaska Airlines
8.1
Very good
9,141 reviews
Alaska Airlines
8.1
Very good
9,141 reviews
Check prices

Boarding

8.2

Entertainment

7.3

Comfort

7.9

Crew

8.6

Food

7.3

Overall

8.1

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

Delta
8.1
Very good
10,789 reviews
Alaska Airlines
8.1
Very good
9,141 reviews
Check prices

Boarding

8.2

Entertainment

7.3

Comfort

7.9

Crew

8.6

Food

7.3

Overall

8.1

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

WestJet
7.6
Good
2,945 reviews
Alaska Airlines
8.1
Very good
9,141 reviews
Check prices

Boarding

8.2

Entertainment

7.3

Comfort

7.9

Crew

8.6

Food

7.3

Overall

8.1

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

United Airlines
7.4
Good
11,043 reviews
Alaska Airlines
8.1
Very good
9,141 reviews
Check prices

Boarding

8.2

Entertainment

7.3

Comfort

7.9

Crew

8.6

Food

7.3

Overall

8.1

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

American Airlines
7.3
Good
14,677 reviews
Alaska Airlines
8.1
Very good
9,141 reviews
Check prices

Boarding

8.2

Entertainment

7.3

Comfort

7.9

Crew

8.6

Food

7.3

Overall

8.1

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Ontario. 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 from for flights from Seattle to Ontario?

    Located just 18.4 km from the city centre, Seattle/Tacoma Intl (SEA) is the airport most travellers will use when flying to Ontario from Seattle.

  • Can I find flights from Seattle to Region of Ontario for under C$ 400 on Cheapflights?

    Yes, there are multiple flights from Seattle to Region of Ontario for under C$ 400. The cheapest flight booked recently is on Multiple Airlines for just C$ 319, but on average you can expect to pay C$ 401.

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

    Cheapflights has 20 direct flights from Seattle to Region of Ontario under C$ 600. A good price for a direct flight from Seattle to Region of Ontario is less than C$ 693.

  • Are there last-minute flights available from Seattle to Region of Ontario for under C$ 500?

    There are currently 20+ open flights from Seattle to Region of Ontario within the next 7 days for less than C$ 500.

  • What are the most popular routes from Seattle to Region of Ontario?

    When deciding which route to take from Seattle to Region of Ontario consider Seattle/Tacoma Intl - Toronto Pearson Intl, Seattle/Tacoma Intl - Toronto Kitchener-Waterloo or Seattle/Tacoma Intl - Ottawa as they are the most popular.

  • What are the most popular airlines that fly from Seattle to Region of Ontario?

    Air Canada, Alaska Airlines and United Airlines are the most popular airlines when flying from Seattle to Region of Ontario.

  • What are the most reliable airlines from Seattle to Region of Ontario?

    Consider Air Canada (90%), United Airlines (90%) or Turkish Airlines (80%) when booking your flight. These represent the most reliable airlines when flying from Seattle to Region of Ontario.

  • What are the cheapest flights from Seattle to Region of Ontario?

    The cheapest flight price from Seattle to Region of Ontario is C$ 215. On average you can expect to pay C$ 531. The most popular route, (Seattle/Tacoma Intl - Toronto Pearson Intl), can usually be booked for C$ 349.

  • What does SEA to YYZ mean?

    Seattle/Tacoma Intl Airport is SEA and Toronto Pearson Intl Airport is YYZ. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: Ottawa Airport (YOW), Toronto Island Airport (YTZ), Hamilton Airport (YHM), London Airport (YXU), Toronto Kitchener-Waterloo Airport (YKF).

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

    The amount of baggage you can bring on your Seattle to Ontario 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 Seattle to Ontario with specific airlines?

    Yes, Cheapflights allows you to browse and filter Seattle to Ontario 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 Seattle to Ontario that include hotel bookings?

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

  • How can I find direct flights from Seattle to Ontario?

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

  • Can I find deals for business class flights from Seattle to Ontario?

    Yes. Cheapflights offers flight deals from Seattle to Ontario 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 Seattle to Ontario that allow pets onboard?

    Many airlines flying from Seattle to Ontario 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 Seattle to Ontario?

    Yes, you can often find last-minute deals on Seattle to Ontario 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 Seattle to Region of Ontario flight deals updated?

    The Seattle to Region of Ontario flight deals you see on this page were last updated on 8/5.

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

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Top 3 airlines flying from Seattle to Ontario

Discover the top 3 airlines that operate flights from Seattle to Ontario. 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 441,849 searches. Data last updated 8 May 2024.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapestC$ 341AverageC$ 382FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
Air CanadaCheapestC$ 518AverageC$ 795FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 634AverageC$ 815FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
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Search flights from Seattle to Ontario by cabin class

Find flights from Seattle to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
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Prem Econ Class
Economy Class

Hourly flight availability from Seattle to Ontario

Find hourly flight availability from Seattle to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 8 May 2024.
1%of flight departuresEarly morningMidnight to 6 am
72%of flight departuresMorning6 am to noon
0%of flight departuresAfternoonNoon to 6 pm
27%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Ontario?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Seattle to Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Ontario?

Cheapflights simply makes it quick and affordable to book flights from Seattle to Ontario by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Seattle to Ontario with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to Ontario flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Seattle to Ontario become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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