Find flights
When to book
FAQs

Cheap flights from Seattle to Ottawa from C$ 174

SEA — YOW
7 Oct — 14 Oct1
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

Sat 10/107:35 p.m. -
1 stop7h 00m
Wed 14/107:20 a.m. -
1 stop14h 25m
Deal found 4/9C$ 440
Mon 28/97:35 p.m. -
1 stop7h 00m
Fri 2/101:20 p.m. -
1 stop8h 25m
Deal found 6/9C$ 441
Sat 19/97:35 p.m. -
1 stop7h 00m
Wed 23/91:20 p.m. -
1 stop8h 25m
Deal found 3/9C$ 445
Sun 11/107:35 p.m. -
1 stop7h 00m
Tue 13/106:55 a.m. -
2 stops14h 50m
Deal found 5/9C$ 451
Thu 17/910:30 a.m. -
2 stops10h 50m
Wed 23/91:20 p.m. -
1 stop8h 25m
Deal found 4/9C$ 454
Fri 25/97:35 p.m. -
1 stop7h 00m
Thu 1/101:20 p.m. -
1 stop8h 25m
Deal found 6/9C$ 457
Sun 18/107:35 p.m. -
1 stop7h 00m
Sun 25/106:10 a.m. -
1 stop11h 30m
Deal found 3/9C$ 465
Sat 17/107:35 p.m. -
1 stop7h 00m
Tue 27/107:45 a.m. -
1 stop9h 52m
Deal found 4/9C$ 466
Tue 6/107:35 p.m. -
1 stop7h 00m
Tue 13/108:15 p.m. -
1 stop16h 25m
Deal found 6/9C$ 473

Find flight deals from Seattle to Ottawa

Round-trip from

C$ 440

One-way from

C$ 174

Popular in

August

Cheapest in

April

Average price

C$ 707
WestJet
  • WestJet
  • 10/10-14/10
  • 2 total stops
  • 21h 25m total
  • Seattle to Ottawa
Search Deals
WestJet
  • WestJet
  • 21/10-31/12
  • 1 total stop
  • 7h 00m total
  • Seattle to Ottawa
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 201 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
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 Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Tue 15/9

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

1 stop7h 00m

Ottawa

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 216

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Sat 10/10

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

2 stops10h 50m

Ottawa

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 235

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Mon 5/10

9:36 p.m.-5:15 p.m.

2 stops16h 39m

Ottawa

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 241

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Sat 10/10

10:30 a.m.-5:58 p.m.

1 stop28h 28m

Ottawa

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 256

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Tue 8/12

8:15 a.m.-12:26 a.m.

2 stops13h 11m

Ottawa

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 282

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Wed 21/10

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

3 stops10h 50m

Ottawa

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 288

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Tue 8/12

11:43 p.m.-1:26 p.m.

1 stop10h 43m

Ottawa

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 289

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Sun 11/10

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

1 stop7h 00m

Ottawa

Tue 13/10

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

2 stops14h 50m

C$ 451

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Thu 17/9

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

1 stop7h 00m

Ottawa

Wed 23/9

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

1 stop8h 25m

C$ 463

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Sun 18/10

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

1 stop7h 00m

Ottawa

Sun 25/10

7:50 a.m.-6:22 p.m.

2 stops13h 32m

C$ 506

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/9

Showing 1-10 of 17 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

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$ 600 and C$ 830 in October.
The cheapest round-trip price found within the last 5 days was C$ 440 on WestJet (10 Oct-14 Oct).

Related info for your journey

  • 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$ 465. The distance from Seattle to Ottawa is about 3529 km.

  • 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
Prescott
Brockville
Wakefield
Pembroke
Smiths Falls

Browse thousands of different options on Cheapflights for your next trip

Fly with Cheapflights

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.