Cheap flights from Toronto Region of Waterloo Intl Airport to Seattle from $134
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Toronto Region of Waterloo Intl Airport to Seattle departing on 4/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Deals available from 900+ travel sites.
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Toronto Region of Waterloo Intl Airport to Seattle
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Cheap bus & train deals from Toronto Region of Waterloo Intl Airport to Seattle
All round-trip flight deals to Seattle
WestJet flights from Toronto Region of Waterloo Intl Airport to Seattle
Our best WestJet deals on Toronto Region of Waterloo Intl Airport to Seattle flight tickets
See travel insights to Seattle from
How to get the cheapest flight ticket from Toronto Region of Waterloo Intl Airport to Seattle
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest day to depart on your flight to Seattle?
On average, the least expensive day to fly to Seattle from Toronto Region of Waterloo Intl Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $455. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Toronto Region of Waterloo Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $522.
What is the cheapest time of day to depart on your flight to Seattle?
Flying to Seattle from Toronto Region of Waterloo Intl Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $483 when looking at flights departing in the morning. Flights to Seattle are more costly at noon, with an average ticket price of $539. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.
When to book flights from Toronto Region of Waterloo Intl Airport to Seattle
Cheap Toronto Region of Waterloo Intl Airport to Seattle (YKF to SEA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Toronto Region of Waterloo Intl Airport to Seattle
How far is Toronto Region of Waterloo Intl to Seattle/Tacoma Intl by plane?
Seattle/Tacoma Intl is 2024.0 mi away from Toronto Region of Waterloo Intl. A reasonable flight in good conditions will take 10h 08m.
When did momondo last update prices for flights from Toronto Region of Waterloo Intl Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Toronto Region of Waterloo Intl Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Toronto Region of Waterloo Intl Airport to Seattle/Tacoma Intl Airport?
As of January 2025, there are 2 operators available to choose from for flights from Toronto Region of Waterloo Intl Airport to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from Toronto Region of Waterloo Intl Airport to Seattle/Tacoma Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Toronto Region of Waterloo Intl Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Toronto Region of Waterloo Intl Airport to Seattle?
Based on momondo bookings for flights between Toronto Region of Waterloo Intl Airport and Seattle, the leading airline is Air Canada, making up 54% of the total bookings. Other popular airlines include WestJet with 46%.
Best airlines flying from Toronto Region of Waterloo Intl Airport to Seattle
Compare and see reviews for airlines that fly from Toronto Region of Waterloo Intl Airport to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $139 | Free Cancellation | Rating 7.0 8,526 reviews | |||
| PriceFrom $164 | Free Cancellation | Rating 7.2 2,820 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Toronto to Seattle?
It is quick and easy to find Toronto to Seattle flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Seattle that suits you.
Can I find flights from Toronto to Seattle with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Toronto to Seattle flights to just show those with flexible booking policies.
How can momondo help me find flights from Toronto to Seattle?
Once you have performed a search for Toronto to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Toronto to Seattle right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Seattle from Toronto. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.