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Cheap flights from Kitchener-Waterloo (YKF) to Seattle (SEA) from $161

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 6/26. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
YKF — SEA
May 21 — May 281
From?
To?
Tue 5/21
Tue 5/28
1 adult, Economy
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Cheap flight deals from Kitchener-Waterloo to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Kitchener-Waterloo (YKF) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 16, 2024.

Round-trip from

$247
From Toronto Kitchener-Waterloo to Seattle/Tacoma Intl
Search Deals

How far in advance should I book a flight from Toronto Kitchener-Waterloo Airport to Seattle?

Travelers have found it’s best to book a flight 51 days in advance to save up to 75% 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 51 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 Kitchener-Waterloo Airport to Seattle 1-2 weeks in advance for as low as $571, or $674 for flights within the next 24 hours.

What is the cheapest month to fly from Toronto Kitchener-Waterloo Airport to Seattle?

October can be a great time to fly to Seattle from Toronto Kitchener-Waterloo Airport with a flight ticket averaging about $524. Cheapflights users have found deals in the month of October for as cheap as $374. The most expensive prices can be found in the month of December.

When is the cheapest time to fly from Toronto Kitchener-Waterloo Airport to Seattle (YKF - SEA)?

When flying from Toronto Kitchener-Waterloo Airport to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap WestJet flights from Kitchener-Waterloo to Seattle

Explore cheap flight options specifically provided by WestJet for the route between Kitchener-Waterloo and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Sat 9/76:15 amYKF - SEA
1 stop9h 41mWestJet
Mon 9/91:50 pmSEA - YKF
1 stop8h 02mWestJet
Deal found 5/15$301
Tue 9/36:15 amYKF - SEA
1 stop9h 41mWestJet
Fri 9/131:50 pmSEA - YKF
1 stop8h 02mWestJet
Deal found 5/16$307
Wed 9/46:15 amYKF - SEA
1 stop9h 41mWestJet
Wed 9/111:50 pmSEA - YKF
1 stop24h 33mWestJet
Deal found 5/15$313
Thu 8/296:15 amYKF - SEA
1 stop9h 41mWestJet
Sun 9/11:50 pmSEA - YKF
1 stop8h 02mWestJet
Deal found 5/15$315
Tue 6/46:15 amYKF - SEA
1 stop9h 41mWestJet
Tue 6/257:00 amSEA - YKF
1 stop14h 52mWestJet
Deal found 5/14$317
Thu 8/296:15 amYKF - SEA
1 stop9h 41mWestJet
Tue 9/101:50 pmSEA - YKF
1 stop8h 02mWestJet
Deal found 5/15$320
Thu 8/296:15 amYKF - SEA
1 stop9h 41mWestJet
Mon 9/97:00 amSEA - YKF
1 stop7h 23mWestJet
Deal found 5/15$333
Thu 8/296:15 amYKF - SEA
2 stops11h 31mWestJet
Sun 9/11:50 pmSEA - YKF
1 stop8h 02mWestJet
Deal found 5/15$337
Tue 7/236:15 amYKF - SEA
1 stop9h 41mWestJet
Tue 9/107:00 amSEA - YKF
1 stop7h 23mWestJet
Deal found 5/15$342

Cheap Kitchener-Waterloo to Seattle flights in May & June 2024

Find cheap flight options from Kitchener-Waterloo to Seattle specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Prices were last updated on May 16, 2024.
Tue 6/46:15 amYKF - SEA
1 stop9h 41mWestJet
Tue 6/257:00 amSEA - YKF
1 stop14h 52mWestJet
Deal found 5/14$317
Fri 6/216:15 amYKF - SEA
1 stop17h 06mWestJet
Tue 6/257:00 amSEA - YKF
1 stop14h 52mWestJet
Deal found 5/14$369
Wed 6/266:15 amYKF - SEA
1 stop9h 41mWestJet
Wed 7/31:50 pmSEA - YKF
1 stop8h 02mWestJet
Deal found 5/15$394
Fri 6/76:15 amYKF - SEA
1 stop17h 05mMultiple Airlines
Sat 6/157:00 amSEA - YKF
2 stops10h 40mMultiple Airlines
Deal found 5/14$407
Sat 6/226:15 amYKF - SEA
1 stop9h 41mWestJet
Wed 7/31:50 pmSEA - YKF
1 stop8h 02mWestJet
Deal found 5/15$411
Fri 6/79:15 pmYKF - SEA
2 stops18h 41mMultiple Airlines
Sat 6/157:00 amSEA - YKF
2 stops10h 40mMultiple Airlines
Deal found 5/14$414
Wed 6/126:15 amYKF - SEA
1 stop9h 41mMultiple Airlines
Sun 6/167:00 amSEA - YKF
2 stops21h 05mMultiple Airlines
Deal found 5/14$418
Sat 6/226:15 amYKF - SEA
1 stop9h 41mWestJet
Sun 6/307:00 amSEA - YKF
1 stop14h 52mWestJet
Deal found 5/15$422
Tue 6/49:15 pmYKF - SEA
2 stops18h 41mMultiple Airlines
Tue 6/256:15 pmSEA - YKF
1 stop27h 37mMultiple Airlines
Deal found 5/14$426

Kitchener-Waterloo to Seattle 2024 flight deals

Discover exclusive flight deals for travel between Kitchener-Waterloo and Seattle in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Sat 9/76:15 amYKF - SEA
1 stop9h 41mWestJet
Mon 9/91:50 pmSEA - YKF
1 stop8h 02mWestJet
Deal found 5/15$301
Wed 9/116:15 amYKF - SEA
1 stop9h 41mWestJet
Tue 9/171:50 pmSEA - YKF
1 stop8h 08mWestJet
Deal found 5/15$307
Wed 9/46:15 amYKF - SEA
1 stop9h 41mWestJet
Wed 9/111:50 pmSEA - YKF
1 stop24h 33mWestJet
Deal found 5/15$313
Thu 8/296:15 amYKF - SEA
1 stop9h 41mWestJet
Sun 9/11:50 pmSEA - YKF
1 stop8h 02mWestJet
Deal found 5/15$315
Tue 6/46:15 amYKF - SEA
1 stop9h 41mWestJet
Tue 6/257:00 amSEA - YKF
1 stop14h 52mWestJet
Deal found 5/14$317
Thu 8/296:15 amYKF - SEA
1 stop9h 41mWestJet
Tue 9/101:50 pmSEA - YKF
1 stop8h 02mWestJet
Deal found 5/15$320
Thu 8/296:15 amYKF - SEA
1 stop9h 41mWestJet
Mon 9/97:00 amSEA - YKF
1 stop7h 23mWestJet
Deal found 5/15$333
Thu 8/296:15 amYKF - SEA
2 stops11h 31mWestJet
Sun 9/11:50 pmSEA - YKF
1 stop8h 02mWestJet
Deal found 5/15$337
Tue 7/236:15 amYKF - SEA
1 stop9h 41mWestJet
Tue 9/107:00 amSEA - YKF
1 stop7h 23mWestJet
Deal found 5/15$342

Kitchener-Waterloo to Seattle flights leaving soon

Find last-minute flight options from Kitchener-Waterloo to Seattle for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Tue 5/216:15 amYKF - SEA
1 stop9h 41mWestJet
Tue 6/111:50 pmSEA - YKF
1 stop8h 20mWestJet
Deal found 5/16$595
Tue 5/216:15 amYKF - SEA
1 stop9h 41mWestJet
Tue 6/117:00 amSEA - YKF
1 stop15h 10mWestJet
Deal found 5/15$688
Tue 5/216:15 amYKF - SEA
2 stops13h 20mWestJet
Tue 6/111:50 pmSEA - YKF
1 stop8h 20mWestJet
Deal found 5/16$745
Fri 5/246:15 amYKF - SEA
1 stop9h 41mWestJet
Mon 5/271:50 pmSEA - YKF
1 stop8h 20mWestJet
Deal found 5/15$895
Thu 5/236:15 amYKF - SEA
1 stop9h 41mWestJet
Tue 5/281:50 pmSEA - YKF
1 stop8h 20mWestJet
Deal found 5/16$1,168

One-way flights to Seattle from Kitchener-Waterloo

Search for one-way flight options from Kitchener-Waterloo to Seattle. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Wed 6/266:15 amYKF - SEA
1 stop9h 41mWestJet
Deal found 5/14$161
Wed 8/216:15 amYKF - SEA
1 stop9h 41mWestJet
Deal found 5/16$162
Tue 8/206:15 amYKF - SEA
1 stop9h 41mWestJet
Deal found 5/16$171
Thu 8/226:15 amYKF - SEA
1 stop9h 41mWestJet
Deal found 5/15$174
Thu 8/226:15 amYKF - SEA
1 stop9h 41mWestJet
Deal found 5/16$186
Thu 9/266:15 amYKF - SEA
1 stop9h 41mWestJet
Deal found 5/16$189
Thu 10/241:40 pmYKF - SEA
1 stop11h 21mAir Canada
Deal found 5/16$197
Mon 9/306:20 pmYKF - SEA
1 stop29h 06mWestJet
Deal found 5/15$200
Thu 10/246:20 pmYKF - SEA
1 stop21h 36mWestJet
Deal found 5/16$201

Find flights from Kitchener-Waterloo to Seattle within your budget

Customize your flight search to find flights from Kitchener-Waterloo to Seattle 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 2,637,452 searches. Data last updated May 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$301 - $418

Route

Depart

Return

Price

Toronto Kitchener-WaterlooSeattle/Tacoma Intl

YKF - SEA

YKFSEA

Toronto Kitchener-Waterloo

Sat 9/7

1 stop9h 41m

Seattle/Tacoma Intl

Mon 9/9

1 stop8h 02m

$301

Toronto Kitchener-WaterlooSeattle/Tacoma Intl

YKF - SEA

YKFSEA

Toronto Kitchener-Waterloo

Tue 9/3

1 stop9h 41m

Seattle/Tacoma Intl

Fri 9/13

1 stop8h 02m

$307

Toronto Kitchener-WaterlooSeattle/Tacoma Intl

YKF - SEA

YKFSEA

Toronto Kitchener-Waterloo

Wed 9/4

1 stop9h 41m

Seattle/Tacoma Intl

Wed 9/11

1 stop24h 33m

$313

Toronto Kitchener-WaterlooSeattle/Tacoma Intl

YKF - SEA

YKFSEA

Toronto Kitchener-Waterloo

Thu 8/29

1 stop9h 41m

Seattle/Tacoma Intl

Sun 9/1

1 stop8h 02m

$315

Toronto Kitchener-WaterlooSeattle/Tacoma Intl

YKF - SEA

YKFSEA

Toronto Kitchener-Waterloo

Tue 6/4

1 stop9h 41m

Seattle/Tacoma Intl

Tue 6/25

1 stop14h 52m

$317

Toronto Kitchener-WaterlooSeattle/Tacoma Intl

YKF - SEA

YKFSEA

Toronto Kitchener-Waterloo

Thu 8/29

1 stop9h 41m

Seattle/Tacoma Intl

Tue 9/10

1 stop8h 02m

$320

Toronto Kitchener-WaterlooSeattle/Tacoma Intl

YKF - SEA

YKFSEA

Toronto Kitchener-Waterloo

Fri 6/7

1 stop17h 05m

Seattle/Tacoma Intl

Sat 6/15

2 stops10h 40m

$407

Toronto Kitchener-WaterlooSeattle/Tacoma Intl

YKF - SEA

YKFSEA

Toronto Kitchener-Waterloo

Fri 6/7

2 stops18h 41m

Seattle/Tacoma Intl

Sat 6/15

2 stops10h 40m

$414

Toronto Kitchener-WaterlooSeattle/Tacoma Intl

YKF - SEA

YKFSEA

Toronto Kitchener-Waterloo

Wed 6/12

1 stop9h 41m

Seattle/Tacoma Intl

Sun 6/16

2 stops21h 05m

$418

Flights are sorted by cheapest first

Deals found on 5/15

No data available for this route at this time. Please check back soon.

Average price of flights to Seattle by month

Plan your trip from Kitchener-Waterloo to Seattle by taking into account the cheapest months to travel. The average price of a one-way flight from Kitchener-Waterloo to Seattle is currently $182 while a round-trip flight costs $346. Price data was last updated on May 12, 2024.

Currently, January is the cheapest month in which you can book a flight from Toronto Kitchener-Waterloo Airport to Seattle (average of $247). Flying from Toronto Kitchener-Waterloo Airport to Seattle in July is currently the most expensive (average of $407). 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.

January

$247

February

$254

March

$288

April

$294

May

$318

June

$404

July

$407

August

$344

September

$278

October

$256

November

$258

December

$248

Temperature and rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average temperature and rainfall totals by month.

SEA

Temperature

41 - 66.2 °F

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated May 16, 2024.
WestJet
7.5
Good
2,919 reviews
Check prices

Boarding

7.7

Food

6.5

Crew

8.2

Comfort

7.3

Entertainment

6.5

Overall

7.5

Reviews

1 / 10

It’s a discount flight so you have to expect to be crammed in. Then there is the food strike at a supplier we were all warned of and they were good with snacks. The attendants were great. I’ll fly them a hand I recommend them, for what they are.

WestJet
7.5
Good
2,919 reviews
WestJet
7.5
Good
2,919 reviews
Check prices

Boarding

7.7

Food

6.5

Crew

8.2

Comfort

7.3

Entertainment

6.5

Overall

7.5

Reviews

1 / 10

It’s a discount flight so you have to expect to be crammed in. Then there is the food strike at a supplier we were all warned of and they were good with snacks. The attendants were great. I’ll fly them a hand I recommend them, for what they are.

Air Canada
7.0
Good
6,947 reviews
WestJet
7.5
Good
2,919 reviews
Check prices

Boarding

7.7

Food

6.5

Crew

8.2

Comfort

7.3

Entertainment

6.5

Overall

7.5

Reviews

1 / 10

It’s a discount flight so you have to expect to be crammed in. Then there is the food strike at a supplier we were all warned of and they were good with snacks. The attendants were great. I’ll fly them a hand I recommend them, for what they are.

Related info for your journey

Find useful and relevant information for your journey from Kitchener-Waterloo 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 Kitchener-Waterloo?

    For a flight from Toronto Kitchener-Waterloo to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 0 inbound flights from Toronto Kitchener-Waterloo per day. 0 airlines have flights to Seattle/Tacoma Intl from Toronto Kitchener-Waterloo on a regular basis.

  • Can I find flights from Toronto Kitchener-Waterloo Airport to Seattle for under $400 on Cheapflights?

    Yes, there are multiple flights from Toronto Kitchener-Waterloo Airport to Seattle for under $400. The cheapest flight booked recently is on WestJet for just $301, but on average you can expect to pay $356.

  • Are there last-minute flights available from Toronto Kitchener-Waterloo Airport to Seattle for under $600?

    There are currently 5+ open flights from Toronto Kitchener-Waterloo Airport to Seattle within the next 7 days for less than $600.

  • What is the cheapest airline to fly from Toronto Kitchener-Waterloo Airport to Seattle round-trip?

    Cheapflights users have booked flights from Toronto Kitchener-Waterloo Airport to Seattle round-trip from $301.

  • What does YKF to SEA mean?

    YKF stands for Toronto Kitchener-Waterloo Airport, while SEA stands for Seattle/Tacoma Intl Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

  • Can I find deals for flights from Kitchener-Waterloo to Seattle that include extra baggage allowance?

    The amount of baggage you can bring on your Kitchener-Waterloo to Seattle flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Kitchener-Waterloo to Seattle with specific airlines?

    Yes, Cheapflights allows you to browse and filter Kitchener-Waterloo to Seattle flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Kitchener-Waterloo to Seattle that include hotel bookings?

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

  • How can I find direct flights from Kitchener-Waterloo to Seattle?

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

  • Can I find deals for business class flights from Kitchener-Waterloo to Seattle?

    Yes. Cheapflights offers flight deals from Kitchener-Waterloo 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.

  • Can I find deals for flights from Kitchener-Waterloo to Seattle that allow pets onboard?

    Many airlines flying from Kitchener-Waterloo to Seattle offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Kitchener-Waterloo to Seattle?

    Yes, you can often find last-minute deals on Kitchener-Waterloo to Seattle flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Toronto Kitchener-Waterloo Airport to Seattle flight deals updated?

    The Toronto Kitchener-Waterloo Airport to Seattle flight deals you see on this page were last updated on 5/16.

See more FAQs

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

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Search flights from Kitchener-Waterloo to Seattle by cabin class

Find flights from Kitchener-Waterloo to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Kitchener-Waterloo to Seattle?

Deals for Kitchener-Waterloo 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.

Why should you use Cheapflights to find cheap flight tickets from Kitchener-Waterloo to Seattle?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Kitchener-Waterloo to Seattle for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Kitchener-Waterloo to Seattle with no change fees?

Yes, we can. To see specific flights from Kitchener-Waterloo to Seattle with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Kitchener-Waterloo to Seattle become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Seattle from Kitchener-Waterloo today and book when prices fit your budget.

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