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Region of Waterloo Intl

$132+ Cheap flights from Washington to Region of Waterloo Intl (YKF)

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 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YKF
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Washington to Region of Waterloo Intl

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

Round-trip from

$257
(oojo)

One-way from

$132
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$411
From Washington to Toronto Region of Waterloo Intl
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One-way flight from Washington to Toronto Region of Waterloo Intl
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Highest demand for flights based on searches. 15% potential increase in price ($70 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 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 Washington to Region of Waterloo Intl

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

This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/241:50 pmSEA - YKF
1 stop7h 55mWestJet
Tue 10/286:20 amYKF - SEA
1 stop11h 00mWestJet
Deal found 9/14$257
This WestJet 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/161:50 pmSEA - YKF
1 stop7h 55mWestJet
Thu 10/236:00 amYKF - SEA
1 stop9h 59mWestJet
Deal found 9/13$265
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/213:10 pmSEA - YKF
1 stop11h 18mWestJet
Mon 11/246:20 amYKF - SEA
1 stop11h 00mWestJet
Deal found 9/13$275
This FlightHub deal was found by Cheapflights users on 9/15. 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.
Sun 11/93:10 pmSEA - YKF
1 stop11h 18mWestJet
Thu 11/136:20 amYKF - SEA
1 stop11h 00mWestJet
Deal found 9/15$276
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/131:11 pmSEA - YKF
2 stops37h 19mMultiple Airlines
Mon 10/206:00 amYKF - SEA
1 stop9h 59mMultiple Airlines
Deal found 9/13$289
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 12/53:10 pmSEA - YKF
1 stop11h 18mMultiple Airlines
Sun 12/77:05 amYKF - SEA
1 stop10h 15mMultiple Airlines
Deal found 9/13$291
This WestJet 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/198:40 amSEA - YKF
1 stop13h 05mWestJet
Mon 10/206:00 amYKF - SEA
1 stop9h 59mWestJet
Deal found 9/13$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 11/911:55 amSEA - YKF
2 stops14h 33mWestJet
Sat 11/156:20 amYKF - SEA
1 stop11h 18mWestJet
Deal found 9/14$294
This Mytrip deal was found by Cheapflights users on 9/15. 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.
Wed 10/18:40 amSEA - YKF
1 stop13h 05mMultiple Airlines
Fri 10/36:15 amYKF - SEA
1 stop9h 20mMultiple Airlines
Deal found 9/15$313
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.
Sun 9/288:40 amSEA - YKF
1 stop13h 05mMultiple Airlines
Fri 10/36:15 amYKF - SEA
1 stop9h 20mMultiple Airlines
Deal found 9/13$314
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.
Fri 11/73:10 pmSEA - YKF
1 stop11h 18mMultiple Airlines
Fri 11/147:05 amYKF - SEA
1 stop10h 15mMultiple Airlines
Deal found 9/14$322

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Region of Waterloo Intl 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 Washington to Toronto Region of Waterloo Intl Airport that are best for you.

Fly from

Washington

Fly to

Region of Waterloo Intl

Route

Depart

Return

Price

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 10/24

1:50 pm-12:45 am

1 stop7h 55m

Toronto Region of Waterloo Intl

Tue 10/28

6:20 am-2:20 pm

1 stop11h 00m

$257

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Thu 10/16

1:50 pm-12:45 am

1 stop7h 55m

Toronto Region of Waterloo Intl

Thu 10/23

6:00 am-12:59 pm

1 stop9h 59m

$265

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 11/21

3:10 pm-5:28 am

1 stop11h 18m

Toronto Region of Waterloo Intl

Mon 11/24

6:20 am-2:20 pm

1 stop11h 00m

$275

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 11/9

3:10 pm-5:28 am

1 stop11h 18m

Toronto Region of Waterloo Intl

Thu 11/13

6:20 am-2:20 pm

1 stop11h 00m

$276

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 11/14

3:10 pm-5:28 am

1 stop11h 18m

Toronto Region of Waterloo Intl

Sat 11/22

6:20 am-2:38 pm

1 stop11h 18m

$276

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Mon 10/13

1:11 pm-5:30 am

2 stops37h 19m

Toronto Region of Waterloo Intl

Mon 10/20

6:00 am-12:59 pm

1 stop9h 59m

$289

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 10/19

8:40 am-12:45 am

1 stop13h 05m

Toronto Region of Waterloo Intl

Mon 10/20

6:00 am-12:59 pm

1 stop9h 59m

$292

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 11/9

11:55 am-5:28 am

2 stops14h 33m

Toronto Region of Waterloo Intl

Sat 11/15

6:20 am-2:38 pm

1 stop11h 18m

$294

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 10/1

8:40 am-12:45 am

1 stop13h 05m

Toronto Region of Waterloo Intl

Fri 10/3

6:15 am-12:35 pm

1 stop9h 20m

$313

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 9/28

8:40 am-12:45 am

1 stop13h 05m

Toronto Region of Waterloo Intl

Fri 10/3

6:15 am-12:35 pm

1 stop9h 20m

$314

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 20 results
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Best time to book a flight from Washington to Region of Waterloo Intl

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

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

Find hourly flight availability from Washington to Region of Waterloo Intl. 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.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from State of Washington to Toronto Region of Waterloo Intl Airport as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Washington to Region of Waterloo Intl. 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 State of Washington to Toronto Region of Waterloo Intl Airport?

    For as low as $257, WestJet can have you in Toronto Region of Waterloo Intl Airport from State of Washington in 7h 55m. The distance from State of Washington to Toronto Region of Waterloo Intl Airport is about 2024 mi.

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

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

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

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

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

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

See more FAQs

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Alternative routes for Washington to Region of Waterloo Intl

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