What is the cheapest day to fly from Seattle to Toronto Region of Waterloo Intl Airport?

Travelers seeking maximum savings on their Seattle to Toronto Region of Waterloo Intl Airport flight should consider departing on Thursday mornings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest day to fly round-trip from Seattle to Toronto Region of Waterloo Intl Airport?

Wednesday flights are generally found to be more expensive for flights from Seattle to Toronto Region of Waterloo Intl Airport. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Toronto Region of Waterloo Intl Airport.

How far in advance should I book a flight from Seattle to Toronto Region of Waterloo Intl Airport?

To save on the cost of your flight from Seattle to Toronto Region of Waterloo Intl Airport, book at least 28 days before your planned departure. Booking around this time can save you about 110% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $540 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $540.

What is the cheapest month to fly from Seattle to Toronto Region of Waterloo Intl Airport?

January can be a great time to fly to Toronto Region of Waterloo Intl Airport from Seattle with a flight ticket averaging about $444. Cheapflights users have found deals in the month of January for as cheap as $128. The most expensive prices can be found in the month of April.

Most accurate provider : When it comes to deals on Seattle-Toronto Region of Waterloo Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Toronto Region of Waterloo Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seattle-Toronto Region of Waterloo Intl Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Seattle-Toronto Region of Waterloo Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Toronto Region of Waterloo Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from Seattle to Toronto Region of Waterloo Intl?

Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Toronto Region of Waterloo Intl. 1 airline have flights from Seattle/Tacoma Intl to Toronto Region of Waterloo Intl on a regular basis. Booking flights from Seattle/Tacoma Intl to Toronto Region of Waterloo Intl should not be difficult; the airport handles an average of 0 outbound flights to Toronto Region of Waterloo Intl per day.

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

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

How can I find direct flights from Seattle 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 Seattle to Region of Waterloo Intl.

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

Yes. Cheapflights offers flight deals from Seattle 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.

$141+ Flights from Seattle to Toronto Region of Waterloo Intl Airport

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Cheap flight deals from Seattle to Region of Waterloo Intl

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$270 (Trip.com)
One-way from	$141 (Mytrip)
Popular in	April
Cheapest in	January
Average price	$369

Provider with most accurate pricing for Seattle/Tacoma Intl-Toronto Region of Waterloo Intl flight deals.

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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Toronto Region of Waterloo Intl flights.

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From Seattle/Tacoma Intl to Toronto Region of Waterloo Intl

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One-way flight from Seattle/Tacoma Intl to Toronto Region of Waterloo Intl

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($43 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).

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Average for round-trip flights in March 2025

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Find flight deals from Seattle to Region of Waterloo Intl

Cheapest flights from Seattle to Region of Waterloo Intl
Explore the most affordable flight options available from Seattle to Region of Waterloo Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Thu 5/151:50 pmSEA - YKF

1 stop12h 25mMultiple Airlines

Mon 5/196:00 amYKF - SEA

1 stop9h 58mMultiple Airlines

Deal found 3/24

$270

Mon 5/52:05 pmSEA - YKF

1 stop7h 41mWestJet

Tue 5/66:00 amYKF - SEA

1 stop9h 58mWestJet

Deal found 3/24

$287

Best flights from Seattle to Region of Waterloo Intl
Discover carefully curated flight deals from Seattle to Region of Waterloo Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 25, 2025.

Thu 5/151:50 pmSEA - YKF

1 stop12h 25mMultiple Airlines

Mon 5/196:00 amYKF - SEA

1 stop9h 58mMultiple Airlines

Deal found 3/24

$270

Mon 5/52:05 pmSEA - YKF

1 stop7h 41mWestJet

Tue 5/66:00 amYKF - SEA

1 stop9h 58mWestJet

Deal found 3/24

$287

Last-minute flights from Seattle to Region of Waterloo Intl
Discover last-minute flight deals from Seattle to Region of Waterloo Intl. Data last updated March 25, 2025 and is based on user searches.

Wed 4/23:15 pmSEA - YKF

1 stop7h 01mWestJet

Mon 4/146:30 amYKF - SEA

1 stop10h 51mWestJet

Deal found 3/24

$743

Wed 4/27:13 amSEA - YKF

1 stop20h 42mMultiple Airlines

Fri 4/48:35 pmYKF - SEA

1 stop19h 21mMultiple Airlines

Deal found 3/25

$803

Mon 4/143:15 pmSEA - YKF

1 stop7h 01mWestJet

Mon 4/216:30 amYKF - SEA

1 stop10h 51mWestJet

Deal found 3/24

$669

Tue 4/223:15 pmSEA - YKF

2 stops35h 15mMultiple Airlines

Tue 4/296:00 amYKF - SEA

2 stops32h 35mMultiple Airlines

Deal found 3/24

$300

One-way flights from Seattle to Region of Waterloo Intl
Search for one-way flight options from Seattle to Region of Waterloo Intl. Find affordable one-way fares based on user searches. Data last updated March 25, 2025.

Fri 5/237:05 amSEA - YKF

1 stop19h 10mMultiple Airlines

Deal found 3/24

$141

Thu 6/261:50 pmSEA - YKF

1 stop7h 56mWestJet

Deal found 3/23

$143

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Toronto Region of Waterloo Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Thu 5/15

1:50 pm-5:15 am

1 stop12h 25m

Toronto Region of Waterloo Intl

Mon 5/19

6:00 am-12:58 pm

1 stop9h 58m

$270

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Mon 5/5

2:05 pm-12:46 am

1 stop7h 41m

Toronto Region of Waterloo Intl

Tue 5/6

6:00 am-12:58 pm

1 stop9h 58m

$287

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 5/23

7:05 am-5:15 am

1 stop19h 10m

$141

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Thu 6/26

1:50 pm-12:46 am

1 stop7h 56m

$143

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Most accurate provider: When it comes to deals on Seattle-Toronto Region of Waterloo Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Toronto Region of Waterloo Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seattle-Toronto Region of Waterloo Intl Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Seattle-Toronto Region of Waterloo Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Toronto Region of Waterloo Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Region of Waterloo Intl

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

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

One of the essential ways to save on airfare from Seattle to Toronto Region of Waterloo Intl Airport is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 30% on airfare.

Rainfall in Region of Waterloo Intl by month

In terms of precipitation, rainfall in Toronto Region of Waterloo Intl Airport ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Toronto Region of Waterloo Intl Airport when rainfall is around 2.0 in.

Temperature in Region of Waterloo Intl by month

If weather is an important factor for your trip to Toronto Region of Waterloo Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing Region of Waterloo Intl

WestJet

7.2

Good

2,785 reviews

Reviews

1 / 20

10.0

Excellent

Sugith,Jan 2025

CUN - YYZ

On time departure. Good service on board. Comfort Plus seating was comfortable.

WestJet

7.2

Good

2,785 reviews

WestJet

7.2

Good

2,785 reviews

Reviews

1 / 20

10.0

Excellent

Sugith,Jan 2025

CUN - YYZ

On time departure. Good service on board. Comfort Plus seating was comfortable.

Related info for your journey

What airport do you fly from for flights from Seattle to Toronto Region of Waterloo Intl?
Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Toronto Region of Waterloo Intl. 1 airline have flights from Seattle/Tacoma Intl to Toronto Region of Waterloo Intl on a regular basis. Booking flights from Seattle/Tacoma Intl to Toronto Region of Waterloo Intl should not be difficult; the airport handles an average of 0 outbound flights to Toronto Region of Waterloo Intl per day.
What is the cheapest airline to fly from Seattle to Toronto Region of Waterloo Intl Airport round-trip?
Cheapflights users have booked flights from Seattle to Toronto Region of Waterloo Intl Airport round-trip from $287.
Can I find deals for flights from Seattle to Region of Waterloo Intl that include hotel bookings?
Yes. In addition to deals on Seattle to Region of Waterloo Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Seattle 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 Seattle to Region of Waterloo Intl.
Can I find deals for business class flights from Seattle to Region of Waterloo Intl?
Yes. Cheapflights offers flight deals from Seattle 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

Top airline flying from Seattle to Region of Waterloo Intl

Airline	Cheapest	Average	Flexibility	On-time
WestJet	Cheapest$295	Average$507	FlexibilityNo cancel fee	On-time60%

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$141+ Cheap flights from Seattle (SEA) 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 5/23. Fares are subject to change and may not be available on all flights or dates of travel.

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

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Seattle to Region of Waterloo Intl

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Seattle to Region of Waterloo Intl

Cheapest flights from Seattle to Region of Waterloo IntlExplore the most affordable flight options available from Seattle to Region of Waterloo Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Explore the most affordable flight options available from Seattle to Region of Waterloo Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Toronto Region of Waterloo Intl Airport that are best for you.

Best time to book a flight from Seattle to Region of Waterloo Intl

Have a flexible travel schedule? Discover the best time to fly to Region of Waterloo Intl from Seattle with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Toronto Region of Waterloo Intl Airport

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

Find hourly flight availability from Seattle 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 March 25, 2025.

Rainfall in Region of Waterloo Intl by month

Plan your trip to Region of Waterloo Intl by taking into account the average rainfall totals by month.

Temperature in Region of Waterloo Intl by month

Plan your trip to Region of Waterloo Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing Region of Waterloo Intl

Related info for your journey

Find useful and relevant information for your journey from Seattle 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.

What airport do you fly from for flights from Seattle to Toronto Region of Waterloo Intl?

What is the cheapest airline to fly from Seattle to Toronto Region of Waterloo Intl Airport round-trip?

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

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

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

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 Seattle to Region of Waterloo Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Seattle to Region of Waterloo Intl

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Book with Flexibility

Travel Smart

Cheapest flights from Seattle to Region of Waterloo Intl
Explore the most affordable flight options available from Seattle to Region of Waterloo Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.