Question 1

What’s the fastest layover option from Toronto Region of Waterloo Intl Airport to Seattle?

Accepted Answer

Flights via Toronto (YYZ) have the shortest average one-way travel time for 1-stop routes: 7h 46m.

Question 2

Which airport typically offers the quickest layover for flights from Toronto Region of Waterloo Intl Airport to Seattle?

Accepted Answer

Flights via Toronto (YYZ) offer the fastest connection on this route, with an average layover time of 2h 07m.

Question 3

What’s the cheapest layover airport for flights from Toronto Region of Waterloo Intl Airport to Seattle?

Accepted Answer

Calgary (YYC) is the most affordable 1-stop option, with an average round-trip price of C$ 312.

Question 4

What’s the top layover airport for flights from Toronto Region of Waterloo Intl Airport to Seattle?

Accepted Answer

Calgary (YYC) – chosen by Cheapflights users on 56% of one-stop itineraries from Toronto Region of Waterloo Intl Airport to Seattle on Cheapflights.

Question 5

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

Accepted Answer

WestJet, at C$ 342, was found to be the cheapest airline from Toronto Region of Waterloo Intl Airport to Seattle.. WestJet is priced at 23% lower than the current average price of a flight leaving 3 months from now.

Question 6

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

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Toronto Region of Waterloo Intl Airport to Seattle (average of C$ 262). Flying from Toronto Region of Waterloo Intl Airport to Seattle in December is currently the most expensive (average of C$ 353). 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.

Question 7

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

Accepted Answer

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

Question 8

E

Accepted Answer

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 mm per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Question 9

E

Accepted Answer

If weather is an important factor for your trip to Seattle, 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 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Question 10

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

Accepted Answer

Departing on a Wednesday is a good option for securing a great price. You can expect to save up to 31% when planning your travel around this day of the week.

Question 11

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

Accepted Answer

Travellers have found it’s best to book a flight 53 days in advance to save up to 40% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 53 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Toronto Region of Waterloo Intl Airport to Seattle 1-2 weeks in advance for as low as C$ 476, or C$ 476 for flights within the next 24 hours.

Question 12

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

Accepted Answer

February can be a great time to fly to Seattle from Toronto Region of Waterloo Intl Airport with a flight ticket averaging about C$ 492. Cheapflights users have found deals in the month of February for as cheap as C$ 285. The most expensive prices can be found in the month of December.

Question 13

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

Accepted Answer

It’s typically best to fly out from Toronto Region of Waterloo Intl Airport to Seattle at noon. Doing so could potentially save you 26% on the flight price compared to flying in the morning, which is usually more expensive.

Question 14

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

Accepted Answer

Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from Toronto Region of Waterloo Intl to Seattle. You should not have trouble finding flights to Seattle/Tacoma Intl from Toronto Region of Waterloo Intl; the airport handles an average of 0 inbound flights from Toronto Region of Waterloo Intl per day. You should also have plenty of airline options to choose from since 2 airlines have flights to the Seattle airport from Toronto Region of Waterloo Intl. It is only a 18.4 km journey from Seattle/Tacoma Intl (SEA) to Seattle’s city centre.

Question 15

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

Accepted Answer

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

Question 16

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

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Region of Waterloo Intl to Seattle.

Question 17

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

Accepted Answer

Yes. Cheapflights offers flight deals from Region of Waterloo Intl to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 18

How does Cheapflights help users find flights from Region of Waterloo Intl to Seattle?

Accepted Answer

Deals for Region of Waterloo Intl to Seattle flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Question 19

Why should you use Cheapflights to find cheap flight tickets from Region of Waterloo Intl to Seattle?

Accepted Answer

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Region of Waterloo Intl to Seattle.

Question 20

Can Cheapflights find flights from Region of Waterloo Intl to Seattle with no change fees?

Accepted Answer

Users can book flights with no change fees policies with our dedicated filters. Book flights from Region of Waterloo Intl to Seattle flexibly with Cheapflights today.

Question 21

Can Cheapflights notify me if prices for flights from Region of Waterloo Intl to Seattle become cheaper?

Accepted Answer

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

Round-trip from	C$ 342
One-way from	C$ 211
Popular in	November
Cheapest in	May
Average price	C$ 353

Airline	Cheapest	Average	Flexibility	On-time
WestJet	CheapestC$ 181	AverageC$ 305	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
Air Canada	CheapestC$ 375	AverageC$ 389	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

Cheap flights from Toronto Region of Waterloo Intl Airport to Seattle from C$ 211

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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Region of Waterloo Intl to Seattle

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Find flight deals from Region of Waterloo Intl to Seattle

Cheapest flights from Region of Waterloo Intl to SeattleExplore the most affordable flight options available from Region of Waterloo Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 July 2025.

Explore the most affordable flight options available from Region of Waterloo Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 July 2025.

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

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

Cheapflights Insights

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

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

Find hourly flight availability from Region of Waterloo Intl to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 July 2025.

What’s the top layover airport for flights from Toronto Region of Waterloo Intl Airport to Seattle?

Share of one-stop round-trip flights from Toronto Region of Waterloo Intl Airport to Seattle chosen by Cheapflights users in the past 12 months, using the same layover each way.

What’s the cheapest layover airport for flights from Toronto Region of Waterloo Intl Airport to Seattle?

Average round-trip fare for 1-stop flights from Toronto Region of Waterloo Intl Airport to Seattle, chosen by Cheapflights users in the past 12 months, with the same layover each way.

What’s the fastest layover option from Toronto Region of Waterloo Intl Airport to Seattle?

Shortest average travel time for 1-stop one-way flights from Toronto Region of Waterloo Intl Airport to Seattle, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Which airport typically offers the quickest layover for flights from Toronto Region of Waterloo Intl Airport to Seattle?

Average layover duration for 1-stop one-way flights from Toronto Region of Waterloo Intl Airport to Seattle, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Seattle

Read through reviews of airlines operating flights from Toronto Region of Waterloo Intl Airport to Seattle, such as WestJet. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Region of Waterloo Intl to Seattle. 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 into for flights to Seattle from Toronto Region of Waterloo Intl?

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

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

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

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

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

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Alternative routes for Region of Waterloo Intl to Seattle

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Top 2 airlines flying from Region of Waterloo Intl to Seattle

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How does Cheapflights help users find flights from Region of Waterloo Intl to Seattle?

Why should you use Cheapflights to find cheap flight tickets from Region of Waterloo Intl to Seattle?

Can Cheapflights find flights from Region of Waterloo Intl to Seattle with no change fees?

Can Cheapflights notify me if prices for flights from Region of Waterloo Intl to Seattle become cheaper?

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Cheapest flights from Region of Waterloo Intl to Seattle
Explore the most affordable flight options available from Region of Waterloo Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 July 2025.