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Cheap flights from Washington to Toronto Region of Waterloo Intl Airport from C$ 227

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 13/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YKF
5 Jun — 12 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Washington to Region of Waterloo Intl

Enter your travel dates to find the best prices.

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 6 May 2026.

Fri 12/67:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Fri 19/68:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Deal found 1/5C$ 489
Fri 21/87:00 a.m.
SEA
-
YKF
1 stop9h 50m
WestJet
Mon 24/88:40 p.m.
YKF
-
SEA
1 stop25h 05m
WestJet
Deal found 2/5C$ 509
Wed 10/67:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Sat 13/68:40 p.m.
YKF
-
SEA
1 stop25h 05m
WestJet
Deal found 1/5C$ 523
Wed 24/67:00 a.m.
SEA
-
YKF
1 stop9h 50m
WestJet
Sun 28/68:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Deal found 1/5C$ 537
Fri 10/77:00 a.m.
SEA
-
YKF
1 stop9h 50m
WestJet
Sun 12/78:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Deal found 3/5C$ 538
Sun 12/77:00 a.m.
SEA
-
YKF
1 stop9h 50m
WestJet
Fri 31/78:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Deal found 6/5C$ 539
Fri 12/67:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Wed 17/68:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Deal found 3/5C$ 545
Wed 10/67:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Mon 15/68:40 p.m.
YKF
-
SEA
1 stop27h 20m
WestJet
Deal found 3/5C$ 553
Fri 7/87:00 a.m.
SEA
-
YKF
1 stop9h 50m
WestJet
Sat 8/88:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Deal found 2/5C$ 557

Find 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 6 May 2026.

Round-trip from

C$ 489

One-way from

C$ 227

Popular in

June

Cheapest in

January

Average price

C$ 575
WestJet
  • WestJet
  • 12/6-19/6
  • 2 total stops
  • 37h 15m total
  • Washington to Toronto
Search Deals
WestJet
  • WestJet
  • 13/6
  • 1 total stop
  • 21h 15m total
  • Washington to Toronto
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 143 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 629,999 searches. Data last updated 6 May 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 1/7

7:35 p.m.-7:50 p.m.

1 stop21h 15m

Toronto Region of Waterloo Intl

Sun 5/7

8:40 p.m.-9:40 a.m.

1 stop16h 00m

C$ 509

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 12/6

7:35 p.m.-7:50 p.m.

1 stop21h 15m

Toronto Region of Waterloo Intl

Wed 17/6

8:40 p.m.-9:40 a.m.

1 stop16h 00m

C$ 523
Quickest round-trip

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 24/6

7:00 a.m.-7:50 p.m.

1 stop9h 50m

Toronto Region of Waterloo Intl

Sun 28/6

8:40 p.m.-9:40 a.m.

1 stop16h 00m

C$ 537

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sat 11/7

7:00 a.m.-7:50 p.m.

1 stop9h 50m

Toronto Region of Waterloo Intl

Tue 21/7

8:40 p.m.-9:40 a.m.

1 stop16h 00m

C$ 538

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 10/6

7:35 p.m.-7:50 p.m.

1 stop21h 15m

Toronto Region of Waterloo Intl

Mon 15/6

8:40 p.m.-9:00 p.m.

1 stop27h 20m

C$ 553

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 12/7

7:00 a.m.-7:50 p.m.

1 stop9h 50m

Toronto Region of Waterloo Intl

Sat 18/7

8:40 p.m.-9:40 a.m.

1 stop16h 00m

C$ 558

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sat 25/7

7:00 a.m.-7:50 p.m.

1 stop9h 50m

Toronto Region of Waterloo Intl

Sun 2/8

8:40 p.m.-9:40 a.m.

1 stop16h 00m

C$ 565

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 26/7

7:00 a.m.-7:50 p.m.

1 stop9h 50m

Toronto Region of Waterloo Intl

Sat 1/8

8:40 p.m.-9:40 a.m.

1 stop16h 00m

C$ 576

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 28/8

7:00 a.m.-7:50 p.m.

1 stop9h 50m

Toronto Region of Waterloo Intl

Sun 30/8

8:40 p.m.-9:40 a.m.

1 stop16h 00m

C$ 579

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Thu 16/7

7:00 a.m.-7:50 p.m.

1 stop9h 50m

Toronto Region of Waterloo Intl

Sun 16/8

8:40 p.m.-9:40 a.m.

1 stop16h 00m

C$ 591

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/5

Showing 1-10 of 23 resultsSorted by cheapest first
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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
No data available for this route at this time. Please check back soon.

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?

    Departing from State of Washington to Toronto Region of Waterloo Intl Airport will take you 21h 15m. The distance from State of Washington to Toronto Region of Waterloo Intl Airport is about 3257 km.

  • 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

Travelling to a place near Toronto Region of Waterloo Intl Airport?

Book flights to Toronto Region of Waterloo Intl Airport if you plan to visit one of these locations
Southampton
Sauble Beach

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Alternative routes for Washington to Region of Waterloo Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Midway to Toronto Island flights
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Midway to Pearson Intl flights
Miami to Pearson Intl flights
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Baltimore to Toronto Island flights
Atlanta to Toronto Island flights
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Boston to Hamilton flights
Dallas/Fort Worth to Toronto Island flights

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