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Cheap flights from Toronto Region of Waterloo Intl Airport to Washington from C$ 237

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Toronto Region of Waterloo Intl Airport to Washington departing on 16/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Toronto Region of Waterloo Intl Airport to Washington

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
6:20 a.m. - 2:20 p.m.YKF-SEA
11h 00m1 stop
WestJet Logo
3:10 p.m. - 5:28 a.m.SEA-YKF
11h 18m1 stop
C$ 444WestJet
Find Deal
Thu, 4 Dec - Wed, 10 Dec
WestJet Logo
6:20 a.m. - 2:20 p.m.YKF-SEA
11h 00m1 stop
WestJet Logo
3:10 p.m. - 5:28 a.m.SEA-YKF
11h 18m1 stop
C$ 483WestJet
Find Deal
Thu, 4 Dec - Wed, 10 Dec
WestJet Logo
6:20 a.m. - 2:40 p.m.YKF-SEA
11h 20m1 stop
WestJet Logo
3:10 p.m. - 5:28 a.m.SEA-YKF
11h 18m1 stop
C$ 522WestJet
Find Deal
Sat, 6 Dec - Sun, 7 Dec
Multiple Airlines Logo
5:35 p.m. - 9:31 a.m.YKF-SEA
18h 56m3 stops
Multiple Airlines Logo
3:40 p.m. - 4:00 p.m.SEA-YKF
21h 20m2 stops
C$ 535Multiple Airlines
Find Deal
Tue, 9 Dec - Fri, 12 Dec
Multiple Airlines Logo
6:55 p.m. - 10:22 a.m.YKF-SEA
18h 27m3 stops
Multiple Airlines Logo
3:10 p.m. - 5:28 a.m.SEA-YKF
11h 18m1 stop
C$ 539Multiple Airlines
Find Deal
Thu, 4 Dec - Wed, 10 Dec
Multiple Airlines Logo
7:05 a.m. - 2:20 p.m.YKF-SEA
10h 15m1 stop
Multiple Airlines Logo
3:40 p.m. - 4:00 p.m.SEA-YKF
21h 20m2 stops
C$ 549Multiple Airlines
Find Deal
Thu, 4 Dec - Wed, 10 Dec
WestJet Logo
6:20 a.m. - 2:20 p.m.YKF-SEA
11h 00m1 stop
WestJet Logo
3:10 p.m. - 5:28 a.m.SEA-YKF
11h 18m1 stop
C$ 556WestJet
Find Deal
Thu, 18 Dec - Wed, 31 Dec
Multiple Airlines Logo
7:05 a.m. - 10:22 a.m.YKF-SEA
30h 17m2 stops
Multiple Airlines Logo
3:10 p.m. - 5:28 a.m.SEA-YKF
11h 18m1 stop
C$ 562Multiple Airlines
Find Deal
Thu, 4 Dec - Wed, 10 Dec
Multiple Airlines Logo
7:05 a.m. - 2:20 p.m.YKF-SEA
10h 15m1 stop
Multiple Airlines Logo
11:55 a.m. - 5:28 a.m.SEA-YKF
14h 33m2 stops
C$ 579Multiple Airlines
Find Deal
Fri, 5 Dec - Sun, 7 Dec
Multiple Airlines Logo
7:05 a.m. - 2:20 p.m.YKF-SEA
10h 15m1 stop
Multiple Airlines Logo
11:55 a.m. - 5:28 a.m.SEA-YKF
14h 33m2 stops
C$ 600Multiple Airlines
Find Deal
Fri, 5 Dec - Sun, 7 Dec

WestJet flights from Toronto Region of Waterloo Intl Airport to State of Washington

Our best WestJet deals on Toronto Region of Waterloo Intl Airport to State of Washington flight tickets
WestJet
4 Dec
YKF6:20 a.m.Toronto Region of Waterloo Intl
11h 00m
1 stop
SEA2:20 p.m.Seattle/Tacoma Intl
10 Dec
SEA3:10 p.m.Seattle/Tacoma Intl
11h 18m
1 stop
YKF5:28 a.m.Toronto Region of Waterloo Intl
C$ 444
Find similar
WestJet
4 Dec
YKF6:20 a.m.Toronto Region of Waterloo Intl
11h 00m
1 stop
SEA2:20 p.m.Seattle/Tacoma Intl
10 Dec
SEA3:10 p.m.Seattle/Tacoma Intl
11h 18m
1 stop
YKF5:28 a.m.Toronto Region of Waterloo Intl
C$ 483
Find similar
WestJet
6 Dec
YKF6:20 a.m.Toronto Region of Waterloo Intl
11h 20m
1 stop
SEA2:40 p.m.Seattle/Tacoma Intl
7 Dec
SEA3:10 p.m.Seattle/Tacoma Intl
11h 18m
1 stop
YKF5:28 a.m.Toronto Region of Waterloo Intl
C$ 522
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Toronto Region of Waterloo Intl Airport to State of Washington 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, momondo users made 96,600 searches. Data last updated 10 November 2025.
Use the filters below to find and compare flights from Toronto Region of Waterloo Intl Airport to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Thu 4/12

6:20 a.m.-2:20 p.m.

1 stop11h 00m

Seattle/Tacoma Intl

Wed 10/12

3:10 p.m.-5:28 a.m.

1 stop11h 18m

C$ 444

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Thu 4/12

6:20 a.m.-2:20 p.m.

1 stop11h 00m

Seattle/Tacoma Intl

Wed 10/12

3:10 p.m.-5:28 a.m.

1 stop11h 18m

C$ 483

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Sat 6/12

6:20 a.m.-2:40 p.m.

1 stop11h 20m

Seattle/Tacoma Intl

Sun 7/12

3:10 p.m.-5:28 a.m.

1 stop11h 18m

C$ 522

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Tue 9/12

5:35 p.m.-9:31 a.m.

3 stops18h 56m

Seattle/Tacoma Intl

Fri 12/12

3:40 p.m.-4:00 p.m.

2 stops21h 20m

C$ 535

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Thu 4/12

6:55 p.m.-10:22 a.m.

3 stops18h 27m

Seattle/Tacoma Intl

Wed 10/12

3:10 p.m.-5:28 a.m.

1 stop11h 18m

C$ 539

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Thu 4/12

7:05 a.m.-2:20 p.m.

1 stop10h 15m

Seattle/Tacoma Intl

Wed 10/12

3:40 p.m.-4:00 p.m.

2 stops21h 20m

C$ 549

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Thu 18/12

6:20 a.m.-2:20 p.m.

1 stop11h 00m

Seattle/Tacoma Intl

Wed 31/12

3:10 p.m.-5:28 a.m.

1 stop11h 18m

C$ 556

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Thu 4/12

7:05 a.m.-10:22 a.m.

2 stops30h 17m

Seattle/Tacoma Intl

Wed 10/12

3:10 p.m.-5:28 a.m.

1 stop11h 18m

C$ 562

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Fri 5/12

7:05 a.m.-2:20 p.m.

1 stop10h 15m

Seattle/Tacoma Intl

Sun 7/12

11:55 a.m.-5:28 a.m.

2 stops14h 33m

C$ 579

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Fri 5/12

7:05 a.m.-2:20 p.m.

1 stop10h 15m

Seattle/Tacoma Intl

Sun 7/12

11:55 a.m.-5:28 a.m.

2 stops14h 33m

C$ 600

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How to get the cheapest flight ticket from Toronto Region of Waterloo Intl Airport to State of Washington

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to State of Washington?

On average, the least expensive day to fly to State of Washington from Toronto Region of Waterloo Intl Airport is on a Thursday. momondo users have found tickets for Thursday departures for as low as C$ 421. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to State of Washington on Tuesday is C$ 555.

What is the cheapest time of day to depart on your flight to State of Washington?

According to our data, the cheapest time of day to fly to State of Washington is in the afternoon. momondo users have found flights departing from Toronto Region of Waterloo Intl Airport to State of Washington in the afternoon for as low as C$ 428. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 575 on average. Flights to State of Washington from Toronto Region of Waterloo Intl Airport in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

Can stopping save me money on Toronto Region of Waterloo Intl Airport to State of Washington flights?

You could potentially save up to 63% on your flight if you consider stops on a Toronto Region of Waterloo Intl Airport to State of Washington flight.

Cheap Toronto Region of Waterloo Intl Airport to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Toronto Region of Waterloo Intl Airport to State of Washington

Direct flights

None
There are no direct flights from Toronto Region of Waterloo Intl Airport to State of Washington. There are no popular flight routes from Toronto Region of Waterloo Intl Airport to State of Washington.
Search flight deals

  • When did momondo last update prices for flights from Toronto Region of Waterloo Intl Airport to Washington?

    Prices for flights from Toronto Region of Waterloo Intl Airport to Washington refresh daily.

  • How many operators does momondo search for flights from Toronto Region of Waterloo Intl Airport to Washington?

  • How old do you have to be to fly from Toronto Region of Waterloo Intl Airport to Washington?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Toronto Region of Waterloo Intl Airport to Washington.

  • What documentation or ID do you need to fly to Washington?

    The required travel and health documents for your Washington trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Toronto Region of Waterloo Intl Airport to State of Washington

Compare and see reviews for airlines that fly from Toronto Region of Waterloo Intl Airport to State of Washington with momondo
Airline
Rating
Free Cancellation
Price
WestJetPriceFrom C$ 186Free CancellationRating
7.2
3,156 reviews
Search WestJet flights

Why use momondo?

Why should I use momondo to find a flight deal from Toronto to Washington?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Toronto to Washington. momondo saves you time and could save you money on your trip.

Can I find flights from Toronto to Washington with flexible booking policies on momondo?

Yes. All flights to Washington from Toronto on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Toronto to Washington?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington from Toronto.

I’m not ready to book a flight from Toronto to Washington right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Toronto to Washington flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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