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Cheap flights from Seattle to Toronto from C$ 165

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 13/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YTO
15 Jan — 22 Jan1
1 adult

The best prices from Seattle/Tacoma Intl to Toronto are usually found in January or September, booked 70 days in advance, depart on a Thursday or Saturday and return on a Tuesday

Cheap flight deals from Seattle to Toronto

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Toronto (YTO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 10 January 2025.

Round-trip from

C$ 355

One-way from

C$ 165

Popular in

April

Cheapest in

January

Average price

C$ 437
31/1-3/2
  • 31/1-3/2
  • 3 total stops
  • 52h 51m total
  • Seattle to Toronto
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13/1
  • 13/1
  • 2 total stops
  • 28h 16m total
  • Seattle to Toronto
Search Deals
High demand for flights, 16% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in January 2025
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Find flight deals from Seattle to Toronto

Cheapest flights from Seattle to Toronto
Explore the most affordable flight options available from Seattle to Toronto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 January 2025.

Fri 31/15:45 a.m.SEA - YYZ
2 stops21h 32mMultiple Airlines
Mon 3/28:00 p.m.YYZ - SEA
1 stop31h 19mMultiple Airlines
Deal found 9/1C$ 355
Tue 4/27:27 a.m.SEA - YYZ
Nonstop4h 38mAlaska Airlines
Tue 11/24:20 p.m.YYZ - SEA
Nonstop5h 23mAlaska Airlines
Deal found 9/1C$ 357
Sun 23/211:59 p.m.SEA - YYZ
1 stop13h 47mUnited Airlines
Mon 24/27:05 p.m.YYZ - SEA
Nonstop5h 25mUnited Airlines
Deal found 9/1C$ 417
Sat 12/43:15 p.m.SEA - YYZ
2 stops11h 43mWestJet
Sat 3/56:45 a.m.YYZ - SEA
2 stops9h 23mWestJet
Deal found 9/1C$ 420
Sat 15/26:05 a.m.SEA - YYZ
Nonstop4h 45mAir Canada
Tue 18/27:05 p.m.YYZ - SEA
Nonstop5h 25mAir Canada
Deal found 9/1C$ 432
Sat 17/57:20 a.m.SEA - YTZ
1 stop9h 30mAir Canada
Tue 20/512:25 p.m.YTZ - SEA
1 stop10h 12mAir Canada
Deal found 9/1C$ 446
Tue 4/29:45 a.m.SEA - YTZ
2 stops23h 05mMultiple Airlines
Tue 11/211:55 a.m.YTZ - SEA
2 stops15h 24mMultiple Airlines
Deal found 8/1C$ 450
Thu 27/26:00 a.m.SEA - YYZ
1 stop7h 09mDelta
Sun 16/31:20 p.m.YYZ - SEA
1 stop11h 36mDelta
Deal found 9/1C$ 458
Tue 4/25:22 a.m.SEA - YYZ
2 stops9h 13mAmerican Airlines
Wed 5/22:00 p.m.YYZ - SEA
1 stop9h 04mAmerican Airlines
Deal found 9/1C$ 495
Fri 21/211:30 a.m.SEA - YKF
2 stops16h 10mMultiple Airlines
Fri 28/28:35 p.m.YKF - SEA
3 stops30h 50mMultiple Airlines
Deal found 9/1C$ 524
Tue 4/23:15 p.m.SEA - YHM
1 stop23h 03mWestJet
Tue 11/26:05 p.m.YHM - SEA
1 stop23h 16mWestJet
Deal found 9/1C$ 544
Wed 2/43:15 p.m.SEA - YKF
1 stop7h 01mWestJet
Sat 5/46:30 a.m.YKF - SEA
1 stop11h 04mWestJet
Deal found 9/1C$ 555

Find flights from Seattle to Toronto within your budget

Customize your flight search to find flights from Seattle to Toronto 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 629,999 searches. Data last updated 10 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 31/1

5:45 a.m.-6:17 a.m.

2 stops21h 32m

Toronto Pearson Intl

Mon 3/2

8:00 p.m.-12:19 a.m.

1 stop31h 19m

C$ 355

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 4/2

7:27 a.m.-3:05 p.m.

Nonstop4h 38m

Toronto Pearson Intl

Tue 11/2

4:20 p.m.-6:43 p.m.

Nonstop5h 23m

C$ 357

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 12/4

3:15 p.m.-5:58 a.m.

2 stops11h 43m

Toronto Pearson Intl

Sat 3/5

6:45 a.m.-1:08 p.m.

2 stops9h 23m

C$ 420

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 15/2

6:05 a.m.-1:50 p.m.

Nonstop4h 45m

Toronto Pearson Intl

Tue 18/2

7:05 p.m.-9:30 p.m.

Nonstop5h 25m

C$ 432

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 17/3

6:05 a.m.-1:50 p.m.

Nonstop4h 45m

Toronto Pearson Intl

Mon 17/3

4:10 p.m.-11:50 a.m.

2 stops22h 40m

C$ 436

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 17/5

7:20 a.m.-7:50 p.m.

1 stop9h 30m

Toronto Island

Tue 20/5

12:25 p.m.-7:37 p.m.

1 stop10h 12m

C$ 446

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 4/2

9:45 a.m.-11:50 a.m.

2 stops23h 05m

Toronto Island

Tue 11/2

11:55 a.m.-12:19 a.m.

2 stops15h 24m

C$ 450

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 27/2

6:00 a.m.-4:09 p.m.

1 stop7h 09m

Toronto Pearson Intl

Sun 16/3

1:20 p.m.-9:56 p.m.

1 stop11h 36m

C$ 458

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 4/2

5:22 a.m.-5:35 p.m.

2 stops9h 13m

Toronto Pearson Intl

Wed 5/2

2:00 p.m.-8:04 p.m.

1 stop9h 04m

C$ 495

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 21/2

11:30 a.m.-6:40 a.m.

2 stops16h 10m

Toronto Region of Waterloo Intl

Fri 28/2

8:35 p.m.-12:25 a.m.

3 stops30h 50m

C$ 524

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/1

Showing 1-10 of 27 results
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Best time to book a flight from Seattle to Toronto

Have a flexible travel schedule? Discover the best time to fly to Toronto from Seattle 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.

Travel insights for flights from Seattle to Toronto

Get recent, data-driven insights about flights from Seattle to Toronto including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Seattle to Toronto?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Toronto. Price data was last updated on 3 January 2025.

Booking 70 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Toronto. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle to Toronto?

Currently, January is the cheapest month in which you can book a flight from Seattle to Toronto (average of C$ 174). Flying from Seattle to Toronto in July is currently the most expensive (average of C$ 258). 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 SEA to YTO?

Find hourly flight availability from Seattle to Toronto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 10 January 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 37% on flights from Seattle to Toronto by exploring options for tickets in the evening.

Weekly flight availability from Seattle to Toronto

Explore weekly flight availability from Seattle to Toronto. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 10 January 2025.

The most flights from SEA to YTO are scheduled on a Monday (4 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Toronto by month

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

In terms of precipitation, rainfall in Toronto ranges from 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Toronto when rainfall is around 51.0 mm.

Temperature in Toronto by month

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

If weather is an important factor for your trip to Toronto, 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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

Reviews of airlines servicing Toronto

Get insights into the airlines that provide service to Toronto. 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 Toronto. Reviews last updated 10 January 2025.
See what other customers who have flown with Delta, American Airlines and WestJet from Seattle to Toronto have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,642 reviews
Check prices

Overall

8.0

Comfort

7.9

Food

7.1

Crew

8.5

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

Seats were not that comfy especially for someone with big hips 😥

Alaska Airlines
8.0
Very good
9,642 reviews
Alaska Airlines
8.0
Very good
9,642 reviews
Check prices

Overall

8.0

Comfort

7.9

Food

7.1

Crew

8.5

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

Seats were not that comfy especially for someone with big hips 😥

Delta
8.0
Very good
8,501 reviews
Alaska Airlines
8.0
Very good
9,642 reviews
Check prices

Overall

8.0

Comfort

7.9

Food

7.1

Crew

8.5

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10