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Cheap flights from Seattle to Ottawa from C$ 248

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 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YOW
22 Aug — 29 Aug1
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 23 July 2026.

Fri 16/107:35 p.m.
SEA
-
YOW
1 stop7h 00m
WestJet
Sun 18/101:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 19/7C$ 569
Thu 1/107:35 p.m.
SEA
-
YOW
1 stop7h 00m
WestJet
Tue 6/101:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 22/7C$ 571
Thu 1/107:35 p.m.
SEA
-
YOW
1 stop7h 00m
WestJet
Sun 4/101:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 22/7C$ 572
Wed 30/97:35 p.m.
SEA
-
YOW
1 stop7h 00m
WestJet
Sun 4/101:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 22/7C$ 575
Fri 2/107:35 p.m.
SEA
-
YOW
1 stop7h 00m
WestJet
Sun 4/101:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 22/7C$ 598
Mon 14/97:35 p.m.
SEA
-
YOW
1 stop7h 00m
WestJet
Thu 17/91:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 20/7C$ 613
Thu 6/87:00 a.m.
SEA
-
YOW
1 stop7h 15m
WestJet
Wed 12/81:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 19/7C$ 614
Thu 20/87:00 a.m.
SEA
-
YOW
1 stop7h 15m
WestJet
Thu 27/812:25 p.m.
YOW
-
SEA
2 stops9h 20m
WestJet
Deal found 23/7C$ 616
Thu 13/87:00 a.m.
SEA
-
YOW
1 stop7h 15m
WestJet
Sat 22/812:25 p.m.
YOW
-
SEA
2 stops9h 20m
WestJet
Deal found 19/7C$ 617

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 23 July 2026.

Round-trip from

C$ 569

One-way from

C$ 248

Popular in

July

Cheapest in

April

Average price

C$ 1,071
WestJet
  • WestJet
  • 16/10-18/10
  • 2 total stops
  • 15h 25m total
  • Seattle to Ottawa
Search Deals
WestJet
  • WestJet
  • 16/9
  • 1 total stop
  • 7h 00m total
  • Seattle to Ottawa
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (C$ 276 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 48 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 23 July 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
Quickest round-trip

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 6/8

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

1 stop7h 00m

Ottawa

Wed 12/8

12:25 p.m.-6:45 p.m.

2 stops9h 20m

C$ 619

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sun 6/9

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

1 stop7h 00m

Ottawa

Sun 13/9

4:15 p.m.-9:40 a.m.

1 stop20h 25m

C$ 641

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 6/8

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

2 stops19h 00m

Ottawa

Wed 12/8

8:55 a.m.-6:45 p.m.

3 stops12h 50m

C$ 785

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 24/10

8:30 a.m.-10:35 p.m.

2 stops11h 05m

Ottawa

Sat 31/10

4:36 p.m.-10:53 p.m.

1 stop9h 17m

C$ 844

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 24/10

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

1 stop7h 00m

Ottawa

Sat 31/10

5:40 a.m.-6:59 p.m.

2 stops16h 19m

C$ 848

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 2/9

11:04 p.m.-9:56 a.m.

1 stop7h 52m

Ottawa

Wed 9/9

10:00 a.m.-3:43 p.m.

1 stop8h 43m

C$ 922

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Fri 14/8

11:04 p.m.-9:56 a.m.

1 stop7h 52m

Ottawa

Sat 22/8

5:57 p.m.-11:44 p.m.

1 stop8h 47m

C$ 926

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Mon 17/8

11:04 p.m.-9:56 a.m.

1 stop7h 52m

Ottawa

Sat 19/9

6:05 a.m.-6:46 p.m.

1 stop15h 41m

C$ 937
Cheapest one-way
Quickest one-way

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 6/8

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

1 stop7h 00m

C$ 271

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Fri 11/9

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

1 stop7h 00m

C$ 285

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/7

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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

Airfare is below average for this route at the moment.

Seattle to Ottawa flights typically cost between C$ 758 and C$ 1,179 in October.
The cheapest round-trip price found within the last 5 days was C$ 569 on WestJet (16 Oct-18 Oct).

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$ 619. 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
Prescott
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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