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Cheap flights from Seattle to Ottawa from C$ 175

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 17/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YOW
8 Mar — 15 Mar1
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 3 March 2025.

Round-trip from

C$ 379

One-way from

C$ 175

Popular in

January

Cheapest in

September

Average price

C$ 678
25/3-2/4
  • 25/3-2/4
  • 2 total stops
  • 43h 30m total
  • Seattle to Ottawa
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17/4
  • 17/4
  • 2 total stops
  • 17h 44m total
  • Seattle to Ottawa
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 192 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 26 potential savings vs. average RT price).
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Average for round-trip flights in March 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 3 March 2025.

Tue 25/311:48 a.m.SEA - YOW
1 stop25h 57mMultiple Airlines
Wed 2/46:10 p.m.YOW - SEA
1 stop17h 33mMultiple Airlines
Deal found 2/3C$ 379
Tue 10/63:39 p.m.SEA - YOW
2 stops12h 06mWestJet
Sun 22/66:15 a.m.YOW - SEA
1 stop9h 16mWestJet
Deal found 3/3C$ 549
Thu 17/46:00 a.m.SEA - YOW
1 stop22h 34mAir Canada
Thu 24/45:35 p.m.YOW - SEA
1 stop7h 28mAir Canada
Deal found 3/3C$ 612
Mon 9/611:23 p.m.SEA - YOW
1 stop7h 35mUnited Airlines
Mon 23/65:15 a.m.YOW - SEA
1 stop8h 36mUnited Airlines
Deal found 3/3C$ 678

Find flights from Seattle to Ottawa within your budget

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 3 March 2025.

Fly from

Seattle

Fly to

Ottawa

Route

Depart

Return

Price

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 25/3

11:48 a.m.-4:45 p.m.

1 stop25h 57m

Ottawa

Wed 2/4

6:10 p.m.-8:43 a.m.

1 stop17h 33m

C$ 379

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 10/6

3:39 p.m.-6:45 a.m.

2 stops12h 06m

Ottawa

Sun 22/6

6:15 a.m.-12:31 p.m.

1 stop9h 16m

C$ 549

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 17/4

6:00 a.m.-7:34 a.m.

1 stop22h 34m

Ottawa

Thu 24/4

5:35 p.m.-10:03 p.m.

1 stop7h 28m

C$ 612

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Mon 9/6

11:23 p.m.-9:58 a.m.

1 stop7h 35m

Ottawa

Mon 23/6

5:15 a.m.-10:51 a.m.

1 stop8h 36m

C$ 678

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 17/4

11:36 a.m.-8:20 a.m.

2 stops17h 44m

C$ 175

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 10/6

3:39 p.m.-6:45 a.m.

2 stops12h 06m

C$ 250

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 3/4

5:45 a.m.-4:13 p.m.

1 stop7h 28m

C$ 311

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 3/4

3:24 p.m.-1:24 p.m.

3 stops19h 00m

C$ 346

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/3

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.

Travel insights for flights from Seattle to Ottawa

Get recent, data-driven insights about flights from Seattle to Ottawa including ideal travel times, pricing trends, and more.

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 28 February 2025.

The best time to book flights from Seattle to Ottawa is 12 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 3 March 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 3 March 2025.
Read reviews from past customers who have flown United Airlines, WestJet and Air Canada from Seattle to Ottawa. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,679 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

United Airlines
7.4
Good
8,679 reviews
United Airlines
7.4
Good
8,679 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

WestJet
7.2
Good
2,788 reviews
United Airlines
7.4
Good
8,679 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Air Canada
7.0
Good
8,829 reviews
United Airlines
7.4
Good
8,679 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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$ 549 on this airline. Additional options worth looking into are Air Canada and United Airlines, starting at C$ 612 and C$ 678 round-trip. WestJet is 31% 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$ 250 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$ 311 and C$ 346, 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
Perth
Smiths Falls
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Wakefield
Lanark

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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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