Cheap Flights from Kitchener / Waterloo to Seattle

Compare Kitchener / Waterloo to Seattle flight deals

Find the cheapest month or even day of the year to fly to Seattle

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Flight deals from Kitchener / Waterloo to Seattle

Looking for a cheap last-minute deal or the best return flight from Kitchener / Waterloo to Seattle? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Kitchener / Waterloo to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Kitchener / Waterloo to Seattle flights are currently cheapest in April.

Alternative Kitchener / Waterloo to Seattle routes

Looking for the cheapest, fastest or easiest route from Kitchener / Waterloo to Seattle? You could fly into the following airports instead.

Toronto to Seattle: Flight information

The things to know before you go.
Cheapest flight foundRs44,290
Cheapest month to flyApril

Finding cheap flights from Kitchener / Waterloo to Seattle: Frequently asked questions

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a return flight from Kitchener / Waterloo to Seattle is Rs84,294. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Kitchener / Waterloo to Seattle. But we found flights with one or more stops from Rs84,294.
As of February 2026, there are no flights flying from Kitchener / Waterloo to Seattle.
The cheapest month to fly from Kitchener / Waterloo to Seattle is usually May.
If you're flying from Kitchener / Waterloo Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from Rs84,294.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Kitchener / Waterloo Airport to Seattle on Monday, 4 May 2026.
No airlines currently offer direct flights between Kitchener / Waterloo Airport and Seattle. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
In February, the average temperature is usually around 4°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
Currently, WestJet offers the cheapest flight tickets to Seattle.

Flying from Region of Waterloo International Airport (YKF) to Seattle: what you need to know

  • Seattle is three hours behind Toronto, where Region of Waterloo International Airport is located. Seattle follows the UTC-7 timezone.

  • For a relaxed start to your YKF to Seattle flight, leave plenty of time for things like baggage drop and finding your gate. Turning up two hours ahead of international departures and one hour before domestic flights is the general travel rule.

  • Planning to travel during a peak period like a bank holiday? Expect longer queues at security and check-in. Give yourself extra leeway and arrive up to four hours before international flights and two hours before domestic departures.

  • The journey from central Toronto to YKF takes around 4 hours 5 minutes by public transport. If you ride-share, drive or get a cab, you'll cover the 80 kilometres in 1 hour 15 minutes or so, depending on traffic conditions.

  • Want a hassle-free start to your journey? Stay near YKF. Whether you're taking an early flight from Region of Waterloo International Airport to Seattle or want to avoid feeling rushed, these hotels are just the thing:

  • Of the departures from Region of Waterloo International Airport, 63.64% touch down on time at their destination.

How to find the cheapest flights from Region of Waterloo International Airport (YKF) to Seattle

  • Rs44,290 is currently the best price for a one-way Region of Waterloo International Airport to Seattle flight. A return flight ticket starts at Rs84,294. These fares can change based on availability and demand.

  • Booking early is often the key to scoring a cheap flight from YKF to Seattle. Fares tend to rise as demand increases, so the closer you get to departure, the more it could cost you.

  • The 'Whole month' tool will show you the cheapest tickets from Region of Waterloo International Airport to Seattle across the month. It's a great way to find a bargain if your travel plans are flexible.

  • You don't need to check in daily to find out if fares have dropped when you set up a Price Alert. We'll let you know the moment there's an extra saving on cheap flights from YKF to Seattle.

  • Pick your ideal departure and arrival times, airlines and number of stops with our filters. Then, sort the results for your flight from Region of Waterloo International Airport to Seattle by 'Best,' 'Cheapest' or 'Fastest.'

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • The distance from Seattle-Tacoma International Airport (SEA) to central Seattle is roughly 23 kilometres. It'll take you about 20 minutes to reach the centre driving.

  • Travelling to the centre by public transport takes about 55 minutes.

  • Book a hotel close to SEA if you're coming in on a late flight from Region of Waterloo International Airport to Seattle. Select one of these accommodation options and skip the long transfer:

  • Pick up a Seattle-Tacoma International Airport rental car and explore Seattle and beyond with your own wheels. Thrifty, Europcar and Budget are well-known companies you can book with here.

  • Lock in the best deal by booking your vehicle from Seattle-Tacoma International Airport about one week ahead of your flight from YKF to Seattle.

Lake Union Sea Plane Base Airport (LKE)

  • The centre of Seattle is located around 3 kilometres from Lake Union Sea Plane Base Airport (LKE). After your flight from Region of Waterloo International Airport to Seattle has touched down and you've made your way through the terminal, expect a drive of around 10 minutes.

  • If you're travelling on public transport, it'll take around 25 minutes.

  • There are some comfortable places to drop your things at near LKE. Kick back and get cosy after your YKF to Seattle flight at any of these perfectly located options:

Best time to go to Seattle

  • Carefully consider your dates before booking your flight from Region of Waterloo International Airport to Seattle. The city comes alive during peak season, but hotel rates are generally higher and attractions can get crowded. Plan your trip to Seattle in the off-season if you prefer a quieter vibe.

  • Before booking a Region of Waterloo International Airport to Seattle flight ticket, think about what kind of weather works for you. August is the warmest month in Seattle, with temperatures ranging from 12ºC to 28ºC.

  • If you like travelling in cooler conditions, search for a cheap ticket from YKF to Seattle in February when temperatures average between -1ºC and 11ºC.

More about Seattle

  • After booking your flight from Region of Waterloo International Airport to Seattle, find a hotel that keeps you close to what you want to see. Make one of these accommodation options your base for exploring Seattle:

  • LMN Architects and Greyhound: Bus Station are just two of the top-rated attractions to put on your Seattle must-do list. Continue your sightseeing adventures at Boeing Radiation Effects Lab.

Explore more of United States

  • You've seen Seattle, now it's time to explore more of United States. Travel about 241 kilometres south to Portland to tick off its leading attractions. From Pioneer Courthouse Square to Portland Japanese Garden and Pittock Mansion, your itinerary will be busy.

  • Spokane is another sought-after destination in United States and is around 370 kilometres east of Seattle. No trip is complete without dropping by Manito Park, Northwest Museum of Arts & Culture and Spokane Falls.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.