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Cheap flights from Seattle to Ottawa from C$ 213

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 19/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YOW
27 May — 3 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Ottawa

Enter your travel dates to find the best prices.

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 27 April 2026.

Sat 16/57:35 p.m.
SEA
-
YOW
1 stop7h 00m
WestJet
Mon 29/61:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 24/4C$ 458
Sat 16/57:35 p.m.
SEA
-
YOW
1 stop7h 00m
WestJet
Wed 8/71:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 24/4C$ 463
Thu 14/57:35 p.m.
SEA
-
YOW
1 stop7h 00m
WestJet
Mon 29/61:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 24/4C$ 465
Fri 15/57:35 p.m.
SEA
-
YOW
1 stop7h 00m
WestJet
Mon 29/61:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 24/4C$ 469
Thu 16/710:30 a.m.
SEA
-
YOW
2 stops10h 50m
WestJet
Mon 20/76:55 a.m.
YOW
-
SEA
2 stops14h 50m
WestJet
Deal found 22/4C$ 470
Thu 14/57:35 p.m.
SEA
-
YOW
1 stop7h 00m
WestJet
Tue 7/71:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 24/4C$ 471
Fri 15/57:35 p.m.
SEA
-
YOW
1 stop7h 00m
WestJet
Wed 8/71:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 24/4C$ 474
Sat 6/610:30 a.m.
SEA
-
YOW
2 stops10h 50m
WestJet
Sat 11/71:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 26/4C$ 476
Tue 19/510:30 a.m.
SEA
-
YOW
2 stops10h 50m
WestJet
Mon 29/61:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 24/4C$ 477

Find 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 27 April 2026.

Round-trip from

C$ 458

One-way from

C$ 213

Popular in

December

Cheapest in

October

Average price

C$ 711
WestJet
  • WestJet
  • 16/5-29/6
  • 2 total stops
  • 15h 25m total
  • Seattle to Ottawa
Search Deals
WestJet
  • WestJet
  • 19/7
  • 1 total stop
  • 7h 00m total
  • Seattle to Ottawa
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 120 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 27 April 2026.
Use the filters below to find and compare flights from Seattle to Ottawa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 26/5

7:35 p.m.-5:35 a.m.

1 stop7h 00m

Ottawa

Mon 29/6

6:00 a.m.-6:45 p.m.

1 stop15h 45m

C$ 504

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sun 17/5

7:35 p.m.-5:35 a.m.

1 stop7h 00m

Ottawa

Wed 24/6

6:15 p.m.-9:40 a.m.

2 stops18h 25m

C$ 529

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 25/7

7:35 p.m.-5:35 a.m.

1 stop7h 00m

Ottawa

Sat 1/8

6:15 p.m.-9:40 a.m.

2 stops18h 25m

C$ 530
Quickest round-trip

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sun 7/6

7:20 p.m.-6:00 a.m.

1 stop7h 40m

Ottawa

Sun 14/6

5:05 a.m.-10:05 a.m.

1 stop8h 00m

C$ 551

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 30/5

7:35 p.m.-5:35 p.m.

2 stops19h 00m

Ottawa

Tue 2/6

1:20 p.m.-6:45 p.m.

1 stop8h 25m

C$ 635

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 20/5

8:05 a.m.-8:00 p.m.

2 stops8h 55m

Ottawa

Wed 24/6

1:20 p.m.-6:45 p.m.

1 stop8h 25m

C$ 670

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Fri 15/5

10:41 p.m.-10:03 a.m.

1 stop8h 22m

Ottawa

Sun 28/6

10:44 a.m.-12:14 a.m.

1 stop16h 30m

C$ 719

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Mon 8/6

10:40 p.m.-5:07 p.m.

1 stop15h 27m

Ottawa

Tue 7/7

6:25 a.m.-11:38 a.m.

1 stop8h 13m

C$ 731

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sun 7/6

11:20 p.m.-6:48 p.m.

1 stop16h 28m

Ottawa

Tue 7/7

6:25 a.m.-11:38 a.m.

1 stop8h 13m

C$ 731

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 26/5

7:05 p.m.-10:03 a.m.

2 stops11h 58m

Ottawa

Sat 30/5

10:44 a.m.-8:53 p.m.

2 stops13h 09m

C$ 743

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/4

Showing 1-10 of 22 resultsSorted by cheapest first
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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?

The best time to book flights from Seattle to Ottawa is 83 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.

How much does it cost to fly round-trip from Seattle to Ottawa?

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.

  • How long is the flight from Seattle to Ottawa?

    A quick flight from Seattle to Ottawa can take about 7h. WestJet provides one of the quickest options available for as low as C$ 504. The distance from Seattle to Ottawa is about 3529 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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.

See more FAQs

Travelling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Brockville
Wakefield
Pembroke
Smiths Falls

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

When you search for this flight from Seattle to Ottawa, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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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