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Cheap flights from Toronto Region of Waterloo Intl Airport to Washington from $177

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 2/2. 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 am - 2:20 pm
YKF
-
SEA
11h 00m1 stop
WestJet Logo
3:10 pm - 5:28 am
SEA
-
YKF
11h 18m1 stop
$223WestJet
Thu, Jan 15 - Fri, Jan 23
WestJet Logo
6:00 am - 1:08 pm
YKF
-
SEA
10h 08m1 stop
WestJet Logo
7:05 am - 12:45 am
SEA
-
YKF
14h 40m1 stop
$229WestJet
Sat, May 16 - Wed, May 20
Multiple Airlines Logo
6:20 am - 2:19 pm
YKF
-
SEA
10h 59m1 stop
Multiple Airlines Logo
11:55 am - 4:00 pm
SEA
-
YKF
25h 05m2 stops
$243Multiple Airlines
Mon, Feb 2 - Mon, Feb 9
Multiple Airlines Logo
7:05 am - 2:20 pm
YKF
-
SEA
10h 15m1 stop
Multiple Airlines Logo
3:10 pm - 5:28 am
SEA
-
YKF
11h 18m1 stop
$270Multiple Airlines
Thu, Jan 22 - Sun, Jan 25
Multiple Airlines Logo
7:05 am - 2:20 pm
YKF
-
SEA
10h 15m1 stop
Multiple Airlines Logo
11:55 am - 5:28 am
SEA
-
YKF
14h 33m2 stops
$276Multiple Airlines
Thu, Jan 22 - Sun, Jan 25
WestJet Logo
6:20 am - 2:19 pm
YKF
-
SEA
10h 59m1 stop
WestJet Logo
11:55 am - 5:29 am
SEA
-
YKF
14h 34m2 stops
$309WestJet
Mon, Feb 2 - Mon, Feb 9
Multiple Airlines Logo
7:05 am - 2:19 pm
YKF
-
SEA
10h 14m1 stop
Multiple Airlines Logo
11:55 am - 5:29 am
SEA
-
YKF
14h 34m2 stops
$313Multiple Airlines
Sun, Feb 1 - Sun, Feb 8
Multiple Airlines Logo
7:05 am - 2:19 pm
YKF
-
SEA
10h 14m1 stop
Multiple Airlines Logo
3:10 pm - 5:29 am
SEA
-
YKF
11h 19m1 stop
$332Multiple Airlines
Sun, Feb 1 - Sun, Feb 8
Multiple Airlines Logo
7:05 am - 10:22 am
YKF
-
SEA
30h 17m2 stops
Multiple Airlines Logo
11:55 am - 5:28 am
SEA
-
YKF
14h 33m2 stops
$335Multiple Airlines
Fri, Jan 16 - Fri, Jan 23
WestJet Logo
6:00 am - 1:08 pm
YKF
-
SEA
10h 08m1 stop
WestJet Logo
7:05 am - 12:45 am
SEA
-
YKF
14h 40m1 stop
$337WestJet
Sat, May 2 - Mon, May 11

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
Jan 15
YKF6:20 amToronto Region of Waterloo Intl
11h 00m
1 stop
SEA2:20 pmSeattle/Tacoma Intl
Jan 23
SEA3:10 pmSeattle/Tacoma Intl
11h 18m
1 stop
YKF5:28 amToronto Region of Waterloo Intl
$223
Find similar
WestJet
May 16
YKF6:00 amToronto Region of Waterloo Intl
10h 08m
1 stop
SEA1:08 pmSeattle/Tacoma Intl
May 20
SEA7:05 amSeattle/Tacoma Intl
14h 40m
1 stop
YKF12:45 amToronto Region of Waterloo Intl
$229
Find similar
WestJet
Feb 2
YKF6:20 amToronto Region of Waterloo Intl
10h 59m
1 stop
SEA2:19 pmSeattle/Tacoma Intl
Feb 9
SEA11:55 amSeattle/Tacoma Intl
14h 34m
2 stops
YKF5:29 amToronto Region of Waterloo Intl
$309
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 832,500 searches. Data last updated December 21, 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 1/15

6:20 am-2:20 pm

1 stop11h 00m

Seattle/Tacoma Intl

Fri 1/23

3:10 pm-5:28 am

1 stop11h 18m

$223

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Sat 5/16

6:00 am-1:08 pm

1 stop10h 08m

Seattle/Tacoma Intl

Wed 5/20

7:05 am-12:45 am

1 stop14h 40m

$229

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Mon 2/2

6:20 am-2:19 pm

1 stop10h 59m

Seattle/Tacoma Intl

Mon 2/9

11:55 am-4:00 pm

2 stops25h 05m

$243

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Thu 1/22

7:05 am-2:20 pm

1 stop10h 15m

Seattle/Tacoma Intl

Sun 1/25

3:10 pm-5:28 am

1 stop11h 18m

$270

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Thu 1/22

7:05 am-2:20 pm

1 stop10h 15m

Seattle/Tacoma Intl

Sun 1/25

11:55 am-5:28 am

2 stops14h 33m

$276

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Mon 2/2

6:20 am-2:19 pm

1 stop10h 59m

Seattle/Tacoma Intl

Mon 2/9

11:55 am-5:29 am

2 stops14h 34m

$309

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Sun 2/1

7:05 am-2:19 pm

1 stop10h 14m

Seattle/Tacoma Intl

Sun 2/8

11:55 am-5:29 am

2 stops14h 34m

$313

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Sun 2/1

7:05 am-2:19 pm

1 stop10h 14m

Seattle/Tacoma Intl

Sun 2/8

3:10 pm-5:29 am

1 stop11h 19m

$332

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Fri 1/16

7:05 am-10:22 am

2 stops30h 17m

Seattle/Tacoma Intl

Fri 1/23

11:55 am-5:28 am

2 stops14h 33m

$335

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Sat 5/2

6:00 am-1:08 pm

1 stop10h 08m

Seattle/Tacoma Intl

Mon 5/11

7:05 am-12:45 am

1 stop14h 40m

$337

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington from

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?

The cheapest day to depart from Toronto Region of Waterloo Intl Airport to State of Washington is on a Tuesday. Travelers who choose to depart for State of Washington on a Tuesday will often find tickets for as low as $282. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Toronto Region of Waterloo Intl Airport to State of Washington for around $672.

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

The cheapest time of day to fly to State of Washington is in the morning when flights can be purchased for as low as $282. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $672 on average. Flights to State of Washington from Toronto Region of Waterloo Intl Airport at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Fastest flight time

10h 14m

Direct flights

None
The fastest flight from Toronto Region of Waterloo Intl Airport to State of Washington takes 10h 14m
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 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.

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.

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