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Cheap flights from Washington to Toronto Region of Waterloo Intl Airport from C$ 202

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 28/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YKF
15 Oct — 22 Oct1
1 adult
1 adult, Economy

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 15 September 2025.

Round-trip from

C$ 355

One-way from

C$ 202

Popular in

June

Cheapest in

January

Average price

C$ 568
WestJet
  • WestJet
  • 24/10-28/10
  • 2 total stops
  • 18h 55m total
  • Washington to Toronto
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WestJet
  • WestJet
  • 28/9
  • 1 total stop
  • 13h 05m total
  • Washington to Toronto
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 132 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 18 potential savings vs. average RT price).
Search Deals
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 15 September 2025.

Fri 24/101:50 p.m.SEA - YKF
1 stop7h 55mWestJet
Tue 28/106:20 a.m.YKF - SEA
1 stop11h 00mWestJet
Deal found 14/9C$ 355
Sun 19/108:40 a.m.SEA - YKF
1 stop13h 05mWestJet
Sat 1/116:20 a.m.YKF - SEA
1 stop11h 18mWestJet
Deal found 14/9C$ 366
Sun 9/113:10 p.m.SEA - YKF
1 stop11h 18mWestJet
Thu 13/116:20 a.m.YKF - SEA
1 stop11h 00mWestJet
Deal found 15/9C$ 381
Sun 9/1111:55 a.m.SEA - YKF
2 stops14h 33mWestJet
Sat 15/116:20 a.m.YKF - SEA
1 stop11h 18mWestJet
Deal found 14/9C$ 406
Wed 1/108:40 a.m.SEA - YKF
1 stop13h 05mMultiple Airlines
Fri 3/106:15 a.m.YKF - SEA
1 stop9h 20mMultiple Airlines
Deal found 15/9C$ 432
Fri 31/1011:55 a.m.SEA - YKF
2 stops14h 33mWestJet
Mon 3/116:20 a.m.YKF - SEA
1 stop11h 00mWestJet
Deal found 15/9C$ 443
Fri 7/113:10 p.m.SEA - YKF
1 stop11h 18mMultiple Airlines
Fri 14/117:05 a.m.YKF - SEA
1 stop10h 15mMultiple Airlines
Deal found 14/9C$ 445
Sat 11/101:50 p.m.SEA - YKF
2 stops12h 40mMultiple Airlines
Sun 19/106:15 a.m.YKF - SEA
2 stops33h 44mMultiple Airlines
Deal found 14/9C$ 448
Sun 26/103:10 p.m.SEA - YKF
1 stop11h 18mMultiple Airlines
Sun 2/117:05 a.m.YKF - SEA
1 stop10h 15mMultiple Airlines
Deal found 14/9C$ 453
Fri 17/101:50 p.m.SEA - YKF
1 stop12h 25mMultiple Airlines
Sun 19/106:15 a.m.YKF - SEA
2 stops33h 44mMultiple Airlines
Deal found 15/9C$ 477

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 15 September 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 24/10

1:50 p.m.-12:45 a.m.

1 stop7h 55m

Toronto Region of Waterloo Intl

Tue 28/10

6:20 a.m.-2:20 p.m.

1 stop11h 00m

C$ 355

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 9/11

3:10 p.m.-5:28 a.m.

1 stop11h 18m

Toronto Region of Waterloo Intl

Thu 13/11

6:20 a.m.-2:20 p.m.

1 stop11h 00m

C$ 381

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 9/11

11:55 a.m.-5:28 a.m.

2 stops14h 33m

Toronto Region of Waterloo Intl

Sat 15/11

6:20 a.m.-2:38 p.m.

1 stop11h 18m

C$ 406

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 1/10

8:40 a.m.-12:45 a.m.

1 stop13h 05m

Toronto Region of Waterloo Intl

Fri 3/10

6:15 a.m.-12:35 p.m.

1 stop9h 20m

C$ 432

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 7/11

3:10 p.m.-5:28 a.m.

1 stop11h 18m

Toronto Region of Waterloo Intl

Fri 14/11

7:05 a.m.-2:20 p.m.

1 stop10h 15m

C$ 445

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 26/10

11:55 a.m.-5:28 a.m.

2 stops14h 33m

Toronto Region of Waterloo Intl

Sun 2/11

7:05 a.m.-2:20 p.m.

1 stop10h 15m

C$ 461

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 17/10

1:50 p.m.-5:15 a.m.

1 stop12h 25m

Toronto Region of Waterloo Intl

Sun 19/10

6:15 a.m.-12:59 p.m.

2 stops33h 44m

C$ 477

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 29/10

3:10 p.m.-5:28 a.m.

1 stop11h 18m

Toronto Region of Waterloo Intl

Sat 1/11

6:20 a.m.-11:23 a.m.

2 stops32h 03m

C$ 495

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 10/10

1:50 p.m.-5:15 a.m.

1 stop12h 25m

Toronto Region of Waterloo Intl

Sun 19/10

6:15 a.m.-12:59 p.m.

2 stops33h 44m

C$ 521

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 14/11

11:55 a.m.-4:00 p.m.

2 stops25h 05m

C$ 216

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/9

Showing 1-10 of 19 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
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 7h 55m. 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.

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

    Currently, January is the cheapest month in which you can book a flight from State of Washington to Toronto Region of Waterloo Intl Airport (average of C$ 114). Flying from State of Washington to Toronto Region of Waterloo Intl Airport in December is currently the most expensive (average of C$ 246). 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

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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