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Cheap flights from Seattle to Ottawa from C$ 211

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 29/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YOW
13 Apr — 20 Apr1
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 14 March 2026.

Sun 26/47:35 p.m.
SEA
-
YOW
1 stop7h 00m
WestJet
Mon 4/51:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 12/3C$ 457
Tue 12/57:35 p.m.
SEA
-
YOW
1 stop7h 00m
WestJet
Sun 17/51:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 12/3C$ 462
Tue 12/57:35 p.m.
SEA
-
YOW
1 stop7h 00m
WestJet
Wed 20/56:55 a.m.
YOW
-
SEA
2 stops14h 50m
WestJet
Deal found 12/3C$ 475
Thu 14/510:30 a.m.
SEA
-
YOW
2 stops10h 50m
WestJet
Tue 19/56:55 a.m.
YOW
-
SEA
2 stops14h 50m
WestJet
Deal found 12/3C$ 476
Sat 25/43:20 p.m.
SEA
-
YOW
1 stop22h 55m
WestJet
Wed 29/41:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 10/3C$ 480
Wed 22/43:10 p.m.
SEA
-
YOW
1 stop22h 43m
WestJet
Tue 28/41:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 12/3C$ 488
Mon 15/67:35 p.m.
SEA
-
YOW
1 stop7h 00m
WestJet
Tue 23/61:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 12/3C$ 498
Thu 18/67:00 a.m.
SEA
-
YOW
1 stop7h 15m
WestJet
Wed 24/66:55 a.m.
YOW
-
SEA
2 stops14h 50m
WestJet
Deal found 12/3C$ 501
Wed 8/43:10 p.m.
SEA
-
YOW
1 stop22h 43m
WestJet
Fri 1/51:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 11/3C$ 502
Thu 14/510:30 a.m.
SEA
-
YOW
1 stop27h 45m
WestJet
Sat 16/51:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 9/3C$ 505

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 14 March 2026.

Round-trip from

C$ 457

One-way from

C$ 211

Popular in

December

Cheapest in

October

Average price

C$ 676
WestJet
  • WestJet
  • 26/4-4/5
  • 2 total stops
  • 15h 25m total
  • Seattle to Ottawa
Search Deals
WestJet
  • WestJet
  • 29/5
  • 1 total stop
  • 7h 00m total
  • Seattle to Ottawa
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 160 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 March 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 14 March 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

Thu 14/5

5:40 a.m.-5:22 p.m.

2 stops8h 42m

Ottawa

Sat 16/5

5:00 a.m.-9:50 a.m.

1 stop7h 50m

C$ 571

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 21/5

10:30 a.m.-12:30 p.m.

2 stops23h 00m

Ottawa

Mon 25/5

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

2 stops18h 25m

C$ 614

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Mon 6/4

8:00 a.m.-7:36 p.m.

1 stop8h 36m

Ottawa

Wed 8/4

4:15 p.m.-9:53 p.m.

1 stop8h 38m

C$ 616

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 17/6

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

1 stop7h 00m

Ottawa

Sun 21/6

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

2 stops14h 50m

C$ 632

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Fri 24/4

11:59 p.m.-5:07 p.m.

1 stop14h 08m

Ottawa

Sun 26/4

10:44 a.m.-12:34 a.m.

1 stop16h 50m

C$ 642

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 16/4

8:25 a.m.-12:41 a.m.

2 stops13h 16m

Ottawa

Sun 19/4

5:40 a.m.-2:19 p.m.

2 stops11h 39m

C$ 647

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 18/6

10:30 a.m.-12:20 a.m.

2 stops10h 50m

Ottawa

Sat 20/6

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

2 stops14h 50m

C$ 651

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 15/4

8:00 p.m.-10:11 a.m.

2 stops11h 11m

Ottawa

Sun 19/4

6:00 p.m.-10:53 p.m.

1 stop7h 53m

C$ 664

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 31/3

5:00 a.m.-11:54 p.m.

2 stops15h 54m

Ottawa

Fri 1/5

2:40 p.m.-10:59 p.m.

2 stops11h 19m

C$ 692
Quickest round-trip

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 21/5

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

1 stop7h 40m

Ottawa

Mon 25/5

6:05 p.m.-10:40 p.m.

1 stop7h 35m

C$ 707

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 18 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

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

Currently, May is the cheapest month in which you can book a flight from Seattle to Ottawa (average of C$ 270). Flying from Seattle to Ottawa in December is currently the most expensive (average of C$ 755). 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.

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 8h 42m. Air Canada provides one of the quickest options available for as low as C$ 571. 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.

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

    Currently, May is the cheapest month in which you can book a flight from Seattle to Ottawa (average of C$ 270). Flying from Seattle to Ottawa in December is currently the most expensive (average of C$ 755). 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 Ottawa?

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

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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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