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$165+ Cheap flights from Ottawa (YOW) to Seattle (SEA)

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 3/19. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SEA
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
1 adult, Economy
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The best prices from Ottawa to Seattle/Tacoma Intl are usually found in October or August, booked 24 days in advance, depart on a Saturday or Thursday and return on a Thursday

Cheap flight deals from Ottawa to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) 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 February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$360
(Kiwi.com)

One-way from

$165
(Kiwi.com)

Popular in

April

Cheapest in

October

Average price

$491
Provider with most accurate pricing for Ottawa-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Ottawa-Seattle/Tacoma Intl flights.
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From Ottawa to Seattle/Tacoma Intl
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One-way flight from Ottawa to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 8% potential increase in price ($41 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Ottawa to Seattle

Cheapest flights from Ottawa to Seattle
Explore the most affordable flight options available from Ottawa to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 22, 2025.

This Kiwi.com deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/166:10 pmYOW - SEA
1 stop19h 42mMultiple Airlines
Sun 3/238:04 pmSEA - YOW
2 stops17h 41mMultiple Airlines
Deal found 2/21$360
This FlightHub deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/83:45 pmYOW - SEA
1 stop7h 43mWestJet
Tue 5/132:05 pmSEA - YOW
1 stop7h 36mWestJet
Deal found 2/21$393
This Air Canada deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/246:00 pmYOW - SEA
1 stop7h 13mAir Canada
Sat 6/75:40 amSEA - YOW
1 stop7h 39mAir Canada
Deal found 2/22$429
This United Airlines deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/75:25 pmYOW - SEA
1 stop8h 18mUnited Airlines
Mon 4/147:33 pmSEA - YOW
2 stops15h 31mUnited Airlines
Deal found 2/21$438

Find flights from Ottawa to Seattle within your budget

Customize your flight search to find flights from Ottawa 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 2,558,603 searches. Data last updated February 22, 2025.

Fly from

Ottawa

Fly to

Seattle

Route

Depart

Return

Price

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Sun 3/16

6:10 pm-10:52 am

1 stop19h 42m

Seattle/Tacoma Intl

Sun 3/23

8:04 pm-4:45 pm

2 stops17h 41m

$360

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Thu 5/8

3:45 pm-8:28 pm

1 stop7h 43m

Seattle/Tacoma Intl

Tue 5/13

2:05 pm-12:41 am

1 stop7h 36m

$393

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Sat 5/24

6:00 pm-10:13 pm

1 stop7h 13m

Seattle/Tacoma Intl

Sat 6/7

5:40 am-4:19 pm

1 stop7h 39m

$429

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Mon 4/7

5:25 pm-10:43 pm

1 stop8h 18m

Seattle/Tacoma Intl

Mon 4/14

7:33 pm-2:04 pm

2 stops15h 31m

$438

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 3/19

6:10 pm-8:43 am

1 stop17h 33m

$165

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 3/18

6:15 am-2:21 pm

1 stop11h 06m

$201

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 3/19

4:00 pm-9:30 pm

1 stop8h 30m

$245

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 3/19

9:45 am-11:01 pm

2 stops16h 16m

$246

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/22

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

Have a flexible travel schedule? Discover the best time to fly to Seattle from Ottawa 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.

Travel insights for flights from Ottawa to Seattle

Get recent, data-driven insights about flights from Ottawa to Seattle including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Ottawa to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Ottawa to Seattle. Price data was last updated on February 14, 2025.

The best time to book flights from Ottawa to Seattle is 24 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Ottawa to Seattle?

Currently, January is the cheapest month in which you can book a flight from Ottawa to Seattle (average of $238). Flying from Ottawa to Seattle in July is currently the most expensive (average of $411). 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.

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

Find hourly flight availability from Ottawa 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 February 22, 2025.

One of the essential ways to save on airfare from Ottawa to Seattle is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 28% on airfare.

Rainfall in Seattle by month

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

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

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

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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 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 February 22, 2025.
United Airlines
7.4
Good
8,754 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.7

Reviews

1 / 20

4.0
Okay

Patti,Feb 2025

FCO - EWR

The food was inedible! We are in the food business and aren’t sure who got this contract. But prisoners eat better. The food was so bad. I ate just a small amount and it made me nauseous. Everything is over microwaved too. And what is with the options? Vegan and vegetarian, but no keto or carnivore? I get that may be more expensive. But I’d gladly pay if it even was an option. But it’s not. There are many fresh options that could have been offered that don’t have to be heated too!

United Airlines
7.4
Good
8,754 reviews
United Airlines
7.4
Good
8,754 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.7

Reviews

1 / 20

4.0
Okay

Patti,Feb 2025

FCO - EWR

The food was inedible! We are in the food business and aren’t sure who got this contract. But prisoners eat better. The food was so bad. I ate just a small amount and it made me nauseous. Everything is over microwaved too. And what is with the options? Vegan and vegetarian, but no keto or carnivore? I get that may be more expensive. But I’d gladly pay if it even was an option. But it’s not. There are many fresh options that could have been offered that don’t have to be heated too!

WestJet
7.2
Good
2,800 reviews
United Airlines
7.4
Good
8,754 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.7

Reviews

1 / 20

4.0
Okay

Patti,Feb 2025

FCO - EWR

The food was inedible! We are in the food business and aren’t sure who got this contract. But prisoners eat better. The food was so bad. I ate just a small amount and it made me nauseous. Everything is over microwaved too. And what is with the options? Vegan and vegetarian, but no keto or carnivore? I get that may be more expensive. But I’d gladly pay if it even was an option. But it’s not. There are many fresh options that could have been offered that don’t have to be heated too!

Air Canada
7.0
Good
8,757 reviews
United Airlines
7.4
Good
8,754 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.7

Reviews

1 / 20

4.0
Okay

Patti,Feb 2025

FCO - EWR

The food was inedible! We are in the food business and aren’t sure who got this contract. But prisoners eat better. The food was so bad. I ate just a small amount and it made me nauseous. Everything is over microwaved too. And what is with the options? Vegan and vegetarian, but no keto or carnivore? I get that may be more expensive. But I’d gladly pay if it even was an option. But it’s not. There are many fresh options that could have been offered that don’t have to be heated too!

Related info for your journey

Find useful and relevant information for your journey from Ottawa to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Ottawa to Seattle round-trip?

    Flying on WestJet is currently your cheapest option to Seattle, with prices starting at $393. Additional round-trip tickets that might be worth considering are offered by Air Canada and United Airlines, with the lowest prices starting at $429 and $438, respectively. WestJet is currently priced 16% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Ottawa to Seattle one-way?

    $201 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Canada and United Airlines, with prices starting from $245 and $246, respectively.

  • Can I find deals for flights from Ottawa to Seattle that include hotel bookings?

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

  • How can I find direct flights from Ottawa to Seattle?

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

  • Can I find deals for business class flights from Ottawa to Seattle?

    Yes. Cheapflights offers flight deals from Ottawa 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.

  • What is the cheapest month to book a flight from Ottawa to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Ottawa to Seattle (average of $238). Flying from Ottawa to Seattle in July is currently the most expensive (average of $411). 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.

See more FAQs

Traveling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
SeaTac
Tukwila
Renton
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Federal Way
Centralia
Marysville
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Ottawa to Seattle

Discover the top 3 airlines that operate flights from Ottawa to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$296Average$493FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$328Average$482FlexibilityNo cancel feeOn-time67%
WestJetCheapest$364Average$485FlexibilityNo cancel feeOn-time60%
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