How does momondo find its flight prices?

We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, 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 necessary travel and health documents for your Washington trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$253 Cheap Flights from Toronto Region of Waterloo Intl Airport to State of Washington in 2026/27

Find the cheapest flights from Toronto Region of Waterloo Intl Airport to Washington

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 pm - 1:40 pmYKF Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl

21h 40m1 stop Calgary

2:30 pm - 3:45 pmSEA Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl

22h 15m1 stop Calgary

$697Multiple Airlines

Thu, Dec 10 - Sun, Dec 13

7:00 pm - 1:40 pmYKF Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl

21h 40m1 stop Calgary

9:34 pm - 3:45 pmSEA Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl

15h 11m2 stops Vancouver Intl Calgary

$776Multiple Airlines

Thu, Dec 10 - Sun, Dec 13

7:00 pm - 3:43 pmYKF Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl

47h 43m3 stops Calgary Phoenix Sky Harbor Intl Denver Intl

1:36 pm - 3:45 pmSEA Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl

23h 09m3 stops Los Angeles Edmonton Calgary

$847Multiple Airlines

Thu, Dec 10 - Sun, Dec 13

6:05 am - 2:40 pmYKF Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl

11h 35m1 stop Calgary

3:30 pm - 5:15 amSEA Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl

10h 45m1 stop Calgary

$849Multiple Airlines

Thu, Apr 8 - Sun, Apr 11

7:00 pm - 3:43 pmYKF Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl

47h 43m3 stops Calgary Phoenix Sky Harbor Intl Denver Intl

9:40 pm - 3:45 pmSEA Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl

15h 05m2 stops Vancouver Intl Calgary

$898Multiple Airlines

Thu, Dec 10 - Sun, Dec 13

7:00 pm - 8:45 amYKF Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl

16h 45m2 stops Calgary Vancouver Intl

9:40 pm - 3:45 pmSEA Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl

15h 05m2 stops Vancouver Intl Calgary

$1,065Multiple Airlines

Thu, Dec 10 - Sun, Dec 13

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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

Cheapest round-trip

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Thu 12/10

7:00 pm-1:40 pm

1 stop21h 40m

Seattle/Tacoma Intl

Sun 12/13

2:30 pm-3:45 pm

1 stop22h 15m

$697

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Thu 12/10

7:00 pm-1:40 pm

1 stop21h 40m

Seattle/Tacoma Intl

Sun 12/13

9:34 pm-3:45 pm

2 stops15h 11m

$776

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Thu 12/10

7:00 pm-3:43 pm

3 stops47h 43m

Seattle/Tacoma Intl

Sun 12/13

1:36 pm-3:45 pm

3 stops23h 09m

$847

Quickest round-trip

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Thu 4/8

6:05 am-2:40 pm

1 stop11h 35m

Seattle/Tacoma Intl

Sun 4/11

3:30 pm-5:15 am

1 stop10h 45m

$849

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Thu 12/10

7:00 pm-3:43 pm

3 stops47h 43m

Seattle/Tacoma Intl

Sun 12/13

9:40 pm-3:45 pm

2 stops15h 05m

$898

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Thu 12/10

7:00 pm-8:45 am

2 stops16h 45m

Seattle/Tacoma Intl

Sun 12/13

9:40 pm-3:45 pm

2 stops15h 05m

$1,065

Cheapest one-way

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Mon 11/30

4:30 pm-1:40 pm

2 stops24h 10m

$253

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Mon 12/7

4:30 pm-1:40 pm

2 stops24h 10m

$257

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Mon 12/7

4:30 pm-1:40 pm

3 stops24h 10m

$264

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Thu 12/24

7:00 pm-9:09 am

1 stop17h 09m

$314

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first

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

Best Price Found	$253
Fastest flight time	11h 35m
Direct flights	None

The best one-way flight to State of Washington from Toronto Region of Waterloo Intl Airport in the past 72 hours is $253. The best round-trip flight deal from Toronto Region of Waterloo Intl Airport to State of Washington found on momondo in the last 72 hours is $697.

The fastest flight from Toronto Region of Waterloo Intl Airport to State of Washington takes 11h 35m

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

Frequently asked questions about flying from Toronto Region of Waterloo Intl Airport to Washington

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 are updated daily.
How old do you have to be to fly from Toronto Region of Waterloo Intl Airport to Washington?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, 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 necessary travel and health documents for your Washington trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Toronto Region of Waterloo Intl Airport to Washington

How do I get Price Alerts for flights from Toronto Region of Waterloo Intl Airport to State of Washington?
You can take advantage of momondo’s Price Alerts by first searching for your flights to Toronto Region of Waterloo Intl Airport from State of Washington. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.
How can I save money on flights from Toronto Region of Waterloo Intl Airport to State of Washington with momondo?
By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.
How does momondo find its flight prices?
We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington from Toronto.

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

All flight searches from Toronto to Washington on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Toronto to Washington flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Washington, momondo offers a useful price alert feature which will track prices for flights to Washington from Toronto and alert you when they change.