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$114+ Cheap flights from Region of Waterloo Intl (YKF) to Washington

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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
YKF — SEA
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Region of Waterloo Intl to Washington

Keep the following information in mind while searching for Region of Waterloo Intl to Washington flight deals. Data was last updated September 15, 2025.

Round-trip from

$222
(FlightHub)

One-way from

$114
(Trip.com)

Popular in

December

Cheapest in

February

Average price

$396
From Toronto Region of Waterloo Intl to Washington
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One-way flight from Toronto Region of Waterloo Intl to Washington
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High demand for flights, 7% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Region of Waterloo Intl to Washington

Cheapest flights from Region of Waterloo Intl to Washington
Explore the most affordable flight options available from Region of Waterloo Intl to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This FlightHub deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:00 amYKF - PDX
1 stop10h 05mWestJet
Sun 10/51:45 pmPDX - YKF
1 stop8h 00mWestJet
Deal found 9/13$222
This Trip.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:20 amYKF - SEA
1 stop11h 00mWestJet
Wed 11/193:10 pmSEA - YKF
1 stop11h 18mWestJet
Deal found 9/13$228
This Mytrip deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/137:05 amYKF - SEA
1 stop10h 15mMultiple Airlines
Wed 11/193:10 pmSEA - YKF
1 stop11h 18mMultiple Airlines
Deal found 9/13$288
This Mytrip deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/126:15 amYKF - SEA
1 stop9h 20mMultiple Airlines
Sun 10/198:40 amSEA - YKF
1 stop17h 35mMultiple Airlines
Deal found 9/14$292
This Mytrip deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/126:15 amYKF - SEA
1 stop9h 20mMultiple Airlines
Sat 10/188:40 amSEA - YKF
2 stops17h 50mMultiple Airlines
Deal found 9/14$308
This Trip.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/206:00 amYKF - SEA
1 stop9h 59mWestJet
Mon 10/273:10 pmSEA - YKF
1 stop11h 18mWestJet
Deal found 9/13$309
This Mytrip deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/36:20 amYKF - SEA
1 stop11h 00mWestJet
Fri 11/711:55 amSEA - YKF
2 stops14h 33mWestJet
Deal found 9/14$312
This Mytrip deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/256:00 amYKF - SEA
1 stop9h 59mWestJet
Sun 11/211:55 amSEA - YKF
2 stops14h 33mWestJet
Deal found 9/14$320
This Trip.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:00 amYKF - PDX
1 stop10h 05mWestJet
Sun 10/51:45 pmPDX - YKF
1 stop8h 00mWestJet
Deal found 9/13$399
This Mytrip deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/296:00 amYKF - PDX
2 stops32h 11mMultiple Airlines
Sat 10/41:45 pmPDX - YKF
2 stops12h 45mMultiple Airlines
Deal found 9/13$439
This Mytrip deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:00 amYKF - PDX
1 stop10h 05mMultiple Airlines
Sun 10/51:45 pmPDX - YKF
1 stop8h 00mMultiple Airlines
Deal found 9/13$526
This FlightHub deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/236:00 amYKF - PDX
2 stops19h 40mWestJet
Sun 10/2612:40 amPDX - YKF
2 stops25h 48mWestJet
Deal found 9/14$593

Cheapflights Fare Finder

 
Customize your flight search to find flights from Region of Waterloo Intl to 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, Cheapflights users made 2,558,603 searches. Data last updated September 15, 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

Region of Waterloo Intl

Fly to

Washington

Route

Depart

Return

Price

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Thu 11/13

6:20 am-2:20 pm

1 stop11h 00m

Seattle/Tacoma Intl

Wed 11/19

3:10 pm-5:28 am

1 stop11h 18m

$228

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Thu 11/13

7:05 am-2:20 pm

1 stop10h 15m

Seattle/Tacoma Intl

Wed 11/19

3:10 pm-5:28 am

1 stop11h 18m

$288

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Sun 10/12

6:15 am-12:35 pm

1 stop9h 20m

Seattle/Tacoma Intl

Sun 10/19

8:40 am-5:15 am

1 stop17h 35m

$292

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Sun 10/12

6:15 am-12:35 pm

1 stop9h 20m

Seattle/Tacoma Intl

Sat 10/18

8:40 am-5:30 am

2 stops17h 50m

$308

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Mon 10/20

6:00 am-12:59 pm

1 stop9h 59m

Seattle/Tacoma Intl

Mon 10/27

3:10 pm-5:28 am

1 stop11h 18m

$309

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Sat 10/25

6:00 am-12:59 pm

1 stop9h 59m

Seattle/Tacoma Intl

Sun 11/2

11:55 am-5:28 am

2 stops14h 33m

$320

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Mon 10/6

6:00 am-8:29 pm

1 stop17h 29m

Seattle/Tacoma Intl

Thu 10/16

1:50 pm-12:45 am

1 stop7h 55m

$332

TorontoPortland

YKF - PDX

YKFPDX

Toronto Region of Waterloo Intl

Fri 10/3

6:00 am-1:05 pm

1 stop10h 05m

Portland

Sun 10/5

1:45 pm-12:45 am

1 stop8h 00m

$399

TorontoPortland

YKF - PDX

YKFPDX

Toronto Region of Waterloo Intl

Mon 9/29

6:00 am-11:11 am

2 stops32h 11m

Portland

Sat 10/4

1:45 pm-5:30 am

2 stops12h 45m

$439

TorontoPortland

YKF - PDX

YKFPDX

Toronto Region of Waterloo Intl

Fri 10/3

6:00 am-1:05 pm

1 stop10h 05m

Portland

Sun 10/5

1:45 pm-12:45 am

1 stop8h 00m

$526

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 32 results
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Best time to book a flight from Region of Waterloo Intl to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Region of Waterloo Intl 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.

Cheapflights Insights

Everything you need to know about your flight from Toronto Region of Waterloo Intl Airport to Washington

What is the cheapest time of day to fly from YKF to WA?

Find hourly flight availability from Region of Waterloo Intl to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

When flying from Toronto Region of Waterloo Intl Airport to State of Washington, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

Find useful and relevant information for your journey from Region of Waterloo Intl to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Toronto Region of Waterloo Intl Airport to State of Washington?

    WestJet can get you from Toronto Region of Waterloo Intl Airport to State of Washington in just under 11h. Your travel time can differ by up to . Airlines will cover a distance of 2024 mi.

  • Can I find deals for flights from Region of Waterloo Intl to Washington that include hotel bookings?

    Yes. In addition to deals on Region of Waterloo Intl to Washington flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Region of Waterloo Intl to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Region of Waterloo Intl to Washington.

  • Can I find deals for business class flights from Region of Waterloo Intl to Washington?

    Yes. Cheapflights offers flight deals from Region of Waterloo Intl to Washington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Toronto Region of Waterloo Intl Airport to State of Washington?

    Currently, January is the cheapest month in which you can book a flight from Toronto Region of Waterloo Intl Airport to State of Washington (average of $238). Flying from Toronto Region of Waterloo Intl Airport to State of Washington in June is currently the most expensive (average of $387). 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.

See more FAQs

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