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Cheap flights from Ottawa to Seattle from C$ 242

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 18/2. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SEA
7 Jan — 14 Jan1
1 adult

The best prices from Ottawa to Seattle/Tacoma Intl are usually found in October or August, booked 24 days in advance, depart on a Thursday or Friday and return on a Monday

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 2 January 2025.

Round-trip from

C$ 460

One-way from

C$ 242

Popular in

March

Cheapest in

October

Average price

C$ 611
WestJet
  • WestJet
  • 19/2-26/2
  • 2 total stops
  • 33h 39m total
  • Ottawa to Seattle
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WestJet
  • WestJet
  • 18/2
  • 1 total stop
  • 11h 06m total
  • Ottawa to Seattle
Search Deals
High demand for flights, 14% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in January 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 2 January 2025.

Wed 19/26:15 a.m.YOW - SEA
1 stop11h 06mWestJet
Wed 26/23:15 p.m.SEA - YOW
1 stop22h 33mWestJet
Deal found 1/1C$ 460
Mon 3/36:55 p.m.YOW - SEA
2 stops18h 05mMultiple Airlines
Mon 10/33:15 p.m.SEA - YOW
1 stop19h 36mMultiple Airlines
Deal found 1/1C$ 483
Sat 11/16:00 a.m.YOW - SEA
2 stops11h 25mAir Canada
Fri 17/15:45 a.m.SEA - YOW
1 stop7h 15mAir Canada
Deal found 1/1C$ 603
Sat 11/16:20 a.m.YOW - SEA
2 stops14h 55mUnited Airlines
Fri 17/16:00 p.m.SEA - YOW
2 stops20h 06mUnited Airlines
Deal found 1/1C$ 611
Fri 11/45:55 a.m.YOW - SEA
2 stops16h 04mDelta
Sat 19/46:00 a.m.SEA - YOW
2 stops15h 09mDelta
Deal found 31/12C$ 946

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 629,999 searches. Data last updated 2 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 19/2

6:15 a.m.-2:21 p.m.

1 stop11h 06m

Seattle/Tacoma Intl

Wed 26/2

3:15 p.m.-4:48 p.m.

1 stop22h 33m

C$ 460

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Mon 3/3

6:55 p.m.-10:00 a.m.

2 stops18h 05m

Seattle/Tacoma Intl

Mon 10/3

3:15 p.m.-1:51 p.m.

1 stop19h 36m

C$ 483

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 14/1

2:10 p.m.-9:30 p.m.

1 stop10h 20m

Seattle/Tacoma Intl

Fri 17/1

5:45 a.m.-4:00 p.m.

1 stop7h 15m

C$ 610

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Mon 27/1

10:30 a.m.-11:00 p.m.

2 stops15h 30m

Seattle/Tacoma Intl

Sat 1/2

5:15 p.m.-5:06 p.m.

2 stops20h 51m

C$ 613

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Fri 11/4

5:55 a.m.-6:59 p.m.

2 stops16h 04m

Seattle/Tacoma Intl

Sat 19/4

6:00 a.m.-12:09 a.m.

2 stops15h 09m

C$ 946

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 18/2

6:15 a.m.-2:21 p.m.

1 stop11h 06m

C$ 242

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 15/1

9:35 p.m.-12:19 a.m.

2 stops29h 44m

C$ 279

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/1

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 27 December 2024.

Booking 24 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ottawa to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from Ottawa to Seattle (average of C$ 270). Flying from Ottawa to Seattle in April is currently the most expensive (average of C$ 425). 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 2 January 2025.

It’s typically best to fly out from Ottawa to Seattle in the evening. Doing so could potentially save you 15% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Ottawa to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Ottawa to Seattle. Price data was last updated on 16 December 2024.

Travelers seeking maximum savings on their Ottawa to Seattle flight should consider departing on Thursday evenings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 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.

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 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).

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 2 January 2025.
Read reviews from past customers who have flown Air Canada and United Airlines from Ottawa to Seattle. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,536 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.6

Food

7.3

Comfort

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,536 reviews
Delta
8.0
Very good
8,536 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.6

Food

7.3

Comfort

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,968 reviews
Delta
8.0
Very good
8,536 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.6

Food

7.3

Comfort

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

WestJet
7.2
Good
2,815 reviews
Delta
8.0
Very good
8,536 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.6

Food

7.3

Comfort

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air Canada
7.0
Good
8,477 reviews
Delta
8.0
Very good
8,536 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.6

Food

7.3

Comfort

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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?

    According to our current data, WestJet (C$ 460), Air Canada (C$ 610), and United Airlines (C$ 613) offers the cheapest pricing from Ottawa to Seattle. You may be able to fly from Ottawa to Seattle for 34% less than the average price by searching for these airlines.

  • 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, August is the cheapest month in which you can book a flight from Ottawa to Seattle (average of C$ 270). Flying from Ottawa to Seattle in April is currently the most expensive (average of C$ 425). 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

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Alternative routes for Ottawa to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
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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 629,999 searches. Data last updated 2 January 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 360AverageC$ 642FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 430AverageC$ 683FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 494AverageC$ 640FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Ottawa to Seattle?

Cheapflights makes it easy to find Ottawa to Seattle flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Ottawa to Seattle?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Seattle from Ottawa.

Can Cheapflights find flights from Ottawa to Seattle with no change fees?

Yes! Cheapflights helps users easily find flights from Ottawa to Seattle with no change fees.

Can Cheapflights notify me if prices for flights from Ottawa to Seattle become cheaper?

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!

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