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Cheap flights from Washington to Toronto Region of Waterloo Intl Airport from C$ 198

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 16/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YKF
28 Feb — 7 Mar1
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 29 January 2026.

Fri 10/48:41 a.m.
SEA
-
YKF
2 stops17h 48m
Multiple Airlines
Thu 16/46:20 a.m.
YKF
-
SEA
1 stop10h 59m
Multiple Airlines
Deal found 27/1C$ 357
Wed 22/43:10 p.m.
SEA
-
YKF
1 stop11h 19m
WestJet
Mon 27/48:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Deal found 29/1C$ 377
Thu 28/57:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Mon 1/68:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Deal found 28/1C$ 424
Tue 12/57:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Sun 17/58:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Deal found 27/1C$ 426
Sun 15/311:55 a.m.
SEA
-
YKF
2 stops14h 34m
Multiple Airlines
Sun 22/38:25 p.m.
YKF
-
SEA
3 stops17h 00m
Multiple Airlines
Deal found 29/1C$ 550
Wed 25/33:10 p.m.
SEA
-
YKF
1 stop11h 19m
Multiple Airlines
Fri 27/37:05 a.m.
YKF
-
SEA
1 stop10h 14m
Multiple Airlines
Deal found 27/1C$ 551
Thu 4/67:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Mon 22/66:00 a.m.
YKF
-
SEA
1 stop17h 28m
WestJet
Deal found 27/1C$ 561
Fri 13/33:10 p.m.
SEA
-
YKF
1 stop11h 19m
WestJet
Sat 28/37:00 p.m.
YKF
-
SEA
1 stop22h 19m
WestJet
Deal found 27/1C$ 569
Fri 10/43:10 p.m.
SEA
-
YKF
1 stop11h 19m
WestJet
Thu 16/46:20 a.m.
YKF
-
SEA
1 stop10h 59m
WestJet
Deal found 27/1C$ 586

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 29 January 2026.

Round-trip from

C$ 357

One-way from

C$ 198

Popular in

June

Cheapest in

January

Average price

C$ 365
WestJet
  • WestJet
  • 10/4-16/4
  • 3 total stops
  • 28h 47m total
  • Washington to Toronto
Search Deals
WestJet
  • WestJet
  • 16/3
  • 1 total stop
  • 11h 19m total
  • Washington to Toronto
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 132 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 29 January 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

Washington

Fly to

Region of Waterloo Intl

Route

Depart

Return

Price

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 22/4

3:10 p.m.-5:29 a.m.

1 stop11h 19m

Toronto Region of Waterloo Intl

Mon 27/4

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

1 stop16h 00m

C$ 377

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Thu 28/5

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

1 stop21h 15m

Toronto Region of Waterloo Intl

Mon 1/6

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

1 stop16h 00m

C$ 424

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sat 2/5

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

1 stop21h 15m

Toronto Region of Waterloo Intl

Sun 10/5

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

1 stop16h 00m

C$ 426

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Thu 4/6

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

1 stop21h 15m

Toronto Region of Waterloo Intl

Mon 8/6

8:40 p.m.-6:45 p.m.

1 stop25h 05m

C$ 426

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sat 23/5

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

1 stop21h 15m

Toronto Region of Waterloo Intl

Wed 27/5

8:40 p.m.-6:45 p.m.

1 stop25h 05m

C$ 426

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Thu 14/5

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

1 stop21h 15m

Toronto Region of Waterloo Intl

Mon 18/5

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

1 stop16h 00m

C$ 426

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 29/3

3:10 p.m.-5:29 a.m.

1 stop11h 19m

Toronto Region of Waterloo Intl

Mon 6/4

6:20 a.m.-2:19 p.m.

1 stop10h 59m

C$ 550

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 25/3

3:10 p.m.-5:29 a.m.

1 stop11h 19m

Toronto Region of Waterloo Intl

Fri 27/3

7:05 a.m.-2:19 p.m.

1 stop10h 14m

C$ 551

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Tue 26/5

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

1 stop21h 15m

C$ 198

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Tue 28/4

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

1 stop21h 15m

C$ 198

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/1

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
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 11h 19m. 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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