HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Region of Waterloo Intl

$156+ 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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YKF
Dec 2 — Dec 91
Tue 12/2
Tue 12/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington to Region of Waterloo Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 November 2, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$264
(FlightHub)

One-way from

$156
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$318
Provider with most accurate pricing for Seattle/Tacoma Intl-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Toronto (YTO) flights.
Search Deals
From Washington to Toronto Region of Waterloo Intl
Search Deals
One-way flight from Washington to Toronto Region of Waterloo Intl
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($69 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 2, 2025.

This Mytrip deal was found by Cheapflights users on 11/2. 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 11/2111:55 amSEA - YKF
3 stops25h 05mMultiple Airlines
Sun 11/237:05 amYKF - SEA
1 stop10h 15mMultiple Airlines
Deal found 11/2$389
This Mytrip deal was found by Cheapflights users on 11/2. 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 11/269:32 amSEA - YKF
2 stops16h 56mMultiple Airlines
Sun 11/307:05 amYKF - SEA
2 stops30h 17mMultiple Airlines
Deal found 11/2$471
This Mytrip deal was found by Cheapflights users on 11/1. 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 11/1411:55 amSEA - YKF
2 stops25h 05mMultiple Airlines
Sun 11/167:05 amYKF - SEA
1 stop10h 15mMultiple Airlines
Deal found 11/1$493
This WestJet deal was found by Cheapflights users on 10/30. 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.
Fri 12/511:55 amSEA - YKF
2 stops14h 33mWestJet
Thu 12/116:20 amYKF - SEA
2 stops31h 02mWestJet
Deal found 10/30$534
This Mytrip deal was found by Cheapflights users on 11/1. 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 11/261:30 pmSEA - YKF
2 stops12h 58mWestJet
Sat 11/296:20 amYKF - SEA
3 stops31h 02mWestJet
Deal found 11/1$562
This WestJet deal was found by Cheapflights users on 10/30. 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.
Fri 12/511:55 amSEA - YKF
2 stops14h 33mWestJet
Tue 12/166:20 amYKF - SEA
1 stop11h 00mWestJet
Deal found 10/30$585
This Orbitz deal was found by Cheapflights users on 11/1. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/263:46 pmSEA - YKF
2 stops10h 42mMultiple Airlines
Sat 11/296:20 amYKF - SEA
2 stops11h 36mMultiple Airlines
Deal found 11/1$598

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 November 2, 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

Wed 3/25

3:10 pm-5:29 am

1 stop11h 19m

Toronto Region of Waterloo Intl

Tue 3/31

6:20 am-2:19 pm

1 stop10h 59m

$264

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 3/8

3:10 pm-5:29 am

1 stop11h 19m

Toronto Region of Waterloo Intl

Sat 3/14

7:00 pm-2:19 pm

1 stop22h 19m

$277

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 3/22

3:10 pm-5:29 am

1 stop11h 19m

Toronto Region of Waterloo Intl

Mon 3/30

6:20 am-2:19 pm

1 stop10h 59m

$303

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 3/20

3:10 pm-5:29 am

1 stop11h 19m

Toronto Region of Waterloo Intl

Tue 3/31

6:20 am-2:19 pm

1 stop10h 59m

$303

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 3/20

3:10 pm-5:29 am

1 stop11h 19m

Toronto Region of Waterloo Intl

Mon 3/30

6:20 am-2:19 pm

1 stop10h 59m

$303

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Mon 3/2

3:10 pm-5:29 am

1 stop11h 19m

Toronto Region of Waterloo Intl

Thu 3/5

7:05 am-2:19 pm

1 stop10h 14m

$341

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 2/15

3:10 pm-5:29 am

1 stop11h 19m

Toronto Region of Waterloo Intl

Sat 2/21

7:00 pm-10:21 am

3 stops18h 21m

$387

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 11/26

9:32 am-5:28 am

2 stops16h 56m

Toronto Region of Waterloo Intl

Sun 11/30

7:05 am-10:22 am

2 stops30h 17m

$471

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 11/14

11:55 am-4:00 pm

2 stops25h 05m

Toronto Region of Waterloo Intl

Sun 11/16

7:05 am-2:20 pm

1 stop10h 15m

$493

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 12/5

11:55 am-5:28 am

2 stops14h 33m

Toronto Region of Waterloo Intl

Thu 12/11

6:20 am-10:22 am

2 stops31h 02m

$534

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 19 results
1
2

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 November 2, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 54% on flights from State of Washington to Toronto Region of Waterloo Intl Airport by exploring options for tickets in the evening.

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 $264, WestJet can have you in Toronto Region of Waterloo Intl Airport from State of Washington in 11h 19m. 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Region of Waterloo Intl

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Pearson Intl flights
Newark to Toronto Island flights
LaGuardia to Pearson Intl flights
Newark to Pearson Intl flights
Los Angeles to Pearson Intl flights
San Francisco to Pearson Intl flights
Dulles Intl to Pearson Intl flights
O'Hare Intl to Pearson Intl flights
Boston to Pearson Intl flights
Reagan-National to Pearson Intl flights
Boston to Toronto Island flights
Atlanta to Pearson Intl flights
Dallas/Fort Worth to Pearson Intl flights
Dulles Intl to Toronto Island flights
Minneapolis to Pearson Intl flights
Los Angeles to Toronto Island flights
John F Kennedy Intl to Toronto Island flights
Seattle to Pearson Intl flights
Sky Harbor Intl to Pearson Intl flights
Hobby to Pearson Intl flights
Ontario to Pearson Intl flights
Orlando to Pearson Intl flights
Philadelphia to Pearson Intl flights
George Bush Intcntl to Pearson Intl flights
San Diego to Pearson Intl flights
Baltimore to Pearson Intl flights
Fort Lauderdale to Pearson Intl flights
Austin to Pearson Intl flights
Midway to Toronto Island flights
LaGuardia to Toronto Island flights
Charlotte to Pearson Intl flights
San Francisco to Toronto Island flights
Orlando to Toronto Island flights
O'Hare Intl to Toronto Island flights
Denver to Pearson Intl flights
Raleigh to Pearson Intl flights
Miami to Pearson Intl flights
Fort Lauderdale to Toronto Island flights
Las Vegas to Pearson Intl flights
Nashville to Pearson Intl flights
Midway to Pearson Intl flights
Atlanta to Toronto Island flights
Santa Ana to Pearson Intl flights
Dallas/Fort Worth to Toronto Island flights
Tampa to Pearson Intl flights
Burbank to Pearson Intl flights
Cincinnati to Pearson Intl flights
St. Louis to Pearson Intl flights
Miami to Toronto Island flights
Philadelphia to Toronto Island flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.