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Cheap flights from Seattle to Ottawa from C$ 206

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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YOW
17 Jun — 24 Jun1
1 adult

Cheap flight deals from Seattle to Ottawa

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Ottawa (YOW). 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 12 June 2025.

Round-trip from

C$ 435

One-way from

C$ 206

Popular in

February

Cheapest in

September

Average price

C$ 664
WestJet
  • WestJet
  • 11/9-15/9
  • 3 total stops
  • 20h 27m total
  • Seattle to Ottawa
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WestJet
  • WestJet
  • 5/10
  • 1 total stop
  • 8h 15m total
  • Seattle to Ottawa
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 101 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 27 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Seattle to Ottawa

Cheapest flights from Seattle to Ottawa
Explore the most affordable flight options available from Seattle to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.

Thu 11/91:50 p.m.SEA - YOW
2 stops12h 33mWestJet
Mon 15/93:35 p.m.YOW - SEA
1 stop7h 54mWestJet
Deal found 12/6C$ 435
Sun 27/77:35 p.m.SEA - YOW
1 stop8h 10mMultiple Airlines
Sun 3/85:15 a.m.YOW - SEA
1 stop8h 45mMultiple Airlines
Deal found 12/6C$ 488
Sun 27/75:30 a.m.SEA - YOW
2 stops11h 26mAir Canada
Sun 3/85:15 a.m.YOW - SEA
1 stop8h 45mAir Canada
Deal found 12/6C$ 496
Wed 2/712:20 a.m.SEA - YOW
1 stop13h 46mUnited Airlines
Fri 11/710:37 a.m.YOW - SEA
1 stop11h 21mUnited Airlines
Deal found 11/6C$ 726

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle to Ottawa 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 12 June 2025.
Use the filters below to find and compare flights from Seattle to Ottawa that are best for you.

Fly from

Seattle

Fly to

Ottawa

Route

Depart

Return

Price

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 11/9

1:50 p.m.-5:23 a.m.

2 stops12h 33m

Ottawa

Mon 15/9

3:35 p.m.-8:29 p.m.

1 stop7h 54m

C$ 435

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sun 27/7

7:35 p.m.-6:45 a.m.

1 stop8h 10m

Ottawa

Sun 3/8

5:15 a.m.-11:00 a.m.

1 stop8h 45m

C$ 488

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sun 27/7

5:30 a.m.-7:56 p.m.

2 stops11h 26m

Ottawa

Sun 3/8

5:15 a.m.-11:00 a.m.

1 stop8h 45m

C$ 496

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 2/7

12:20 a.m.-9:35 p.m.

1 stop18h 15m

Ottawa

Sun 13/7

9:50 a.m.-12:56 a.m.

1 stop18h 06m

C$ 726

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sun 5/10

7:05 a.m.-6:20 p.m.

1 stop8h 15m

C$ 206

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Mon 14/7

7:05 a.m.-1:05 p.m.

2 stops27h 00m

C$ 224

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Mon 23/6

5:30 a.m.-7:26 p.m.

2 stops10h 56m

C$ 256

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 15/7

12:20 a.m.-9:35 p.m.

1 stop18h 15m

C$ 325

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 26/6

6:00 a.m.-12:22 a.m.

2 stops15h 22m

C$ 1,053

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/6

Best time to book a flight from Seattle to Ottawa

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

Cheapflights Insights

Everything you need to know about your flight from Seattle to Ottawa

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Ottawa. Price data was last updated on 9 June 2025.

The best time to book flights from Seattle to Ottawa is 84 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 Seattle to Ottawa?

Currently, October is the cheapest month in which you can book a flight from Seattle to Ottawa (average of C$ 224). Flying from Seattle to Ottawa in December is currently the most expensive (average of C$ 326). 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 SEA to YOW?

Find hourly flight availability from Seattle to Ottawa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 June 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Ottawa as you normally would.

Rainfall in Ottawa by month

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

In terms of precipitation, rainfall in Ottawa ranges from 50.0 - 93.0 mm per month. June is typically the wettest month, when rainfall can reach 93.0 mm. February is typically the driest time to visit Ottawa when rainfall is around 50.0 mm.

Temperature in Ottawa by month

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

If weather is an important factor for your trip to Ottawa, 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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -10.0 C).

Reviews of airlines servicing Ottawa

Get insights into the airlines that provide service to Ottawa. 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 Ottawa. Reviews last updated 12 June 2025.
Read reviews from past customers who have flown Delta, United Airlines and WestJet from Seattle to Ottawa. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews
Check prices

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
WestJet
7.2
Good
2,868 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,531 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Seattle to Ottawa. 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 Seattle to Ottawa round-trip?

    Our cheapest airline available from Seattle to Ottawa is WestJet. Our recent data shows that you can find tickets from as low as C$ 435 on this airline. Additional options worth looking into are Air Canada and United Airlines, starting at C$ 496 and C$ 726 round-trip. WestJet is 37% cheaper than the average price of flights available within the next 90 days to this destination.

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

    C$ 206 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 C$ 256 and C$ 325, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Ottawa 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 Seattle to Ottawa?

    Currently, October is the cheapest month in which you can book a flight from Seattle to Ottawa (average of C$ 224). Flying from Seattle to Ottawa in December is currently the most expensive (average of C$ 326). 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Gatineau
Brockville
Perth
Smiths Falls
Prescott
Pembroke
Wakefield
Lanark

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

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to Ottawa for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Certainly. Search results for flights to Ottawa from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

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

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