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$105+ Cheap flights from Seattle (SEA) to Ottawa (YOW)

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 7/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YOW
Apr 8 — Apr 151
Tue 4/8
Tue 4/15
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Ottawa are usually found in September or November, booked 71 days in advance, depart on a Thursday or Saturday and return on a Saturday

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 April 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$271
(Trip.com)

One-way from

$105
(oojo)

Popular in

January

Cheapest in

September

Average price

$625
Provider with most accurate pricing for Seattle/Tacoma Intl-Ottawa flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Ottawa flights.
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From Seattle/Tacoma Intl to Ottawa
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One-way flight from Seattle/Tacoma Intl to Ottawa
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Highest demand for flights based on searches. 14% potential increase in price ($90 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 3, 2025.

This Trip.com deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/11:50 pmSEA - YOW
2 stops12h 35mWestJet
Sun 5/46:00 amYOW - SEA
1 stop9h 58mWestJet
Deal found 4/2$271
This Mytrip deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/175:30 amSEA - YOW
1 stop7h 49mAir Canada
Sat 5/242:35 pmYOW - SEA
1 stop8h 02mAir Canada
Deal found 4/2$286
This Kiwi.com deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/256:00 amSEA - YOW
1 stop10h 55mMultiple Airlines
Wed 5/287:50 amYOW - SEA
1 stop8h 08mMultiple Airlines
Deal found 4/2$314
This United deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/238:15 amSEA - YOW
1 stop7h 37mUnited Airlines
Tue 5/65:15 amYOW - SEA
1 stop8h 30mUnited Airlines
Deal found 4/2$431

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 2,558,603 searches. Data last updated April 3, 2025.
Use the filters below to find and compare flights from Seattle to Ottawa that are best for you.

Fly from

Seattle

Fly to

Ottawa

Route

Depart

Return

Price

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 5/1

1:50 pm-5:25 am

2 stops12h 35m

Ottawa

Sun 5/4

6:00 am-12:58 pm

1 stop9h 58m

$271

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 5/17

5:30 am-4:19 pm

1 stop7h 49m

Ottawa

Sat 5/24

2:35 pm-7:37 pm

1 stop8h 02m

$286

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sun 5/25

6:00 am-7:55 pm

1 stop10h 55m

Ottawa

Wed 5/28

7:50 am-12:58 pm

1 stop8h 08m

$314

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 4/23

8:15 am-6:52 pm

1 stop7h 37m

Ottawa

Tue 5/6

5:15 am-10:45 am

1 stop8h 30m

$431

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 7/5

7:35 pm-6:45 am

1 stop8h 10m

$105

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 4/30

12:30 pm-4:45 pm

1 stop25h 15m

$109

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 5/21

11:30 am-12:19 am

1 stop9h 49m

$150

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 7/5

11:20 pm-2:27 pm

1 stop12h 07m

$165

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 7/5

7:35 pm-6:45 am

1 stop8h 10m

$188

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/2

Compare providers for flights from Seattle to Ottawa

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Ottawa in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Ottawa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Ottawa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Ottawa flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Ottawa flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Ottawa flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Ottawa. Price data was last updated on March 28, 2025.

The price you pay for your flight from Seattle to Ottawa may vary depending on when you book. For the best chance of a lower fare, look to book 65 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Seattle to Ottawa (average of $294). Flying from Seattle to Ottawa in May is currently the most expensive (average of $460). 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 April 3, 2025.

When flying from Seattle to Ottawa, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 32% versus a flight in the morning.

What is the cheapest day to fly from Seattle to Ottawa?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Ottawa. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Ottawa flight should consider departing on Thursday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 2.0 - 3.7 inches per month. June is typically the wettest month, when rainfall can reach 3.7 in. February is typically the driest time to visit Ottawa when rainfall is around 2.0 in.

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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 F).

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 April 3, 2025.
Read reviews from past customers who have flown Delta, United Airlines and WestJet from Seattle to Ottawa. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,897 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,619 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
WestJet
7.2
Good
2,795 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.0
Good
9,029 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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?

    According to our current data, WestJet ($271), Air Canada ($286), and United Airlines ($431) offers the cheapest pricing from Seattle to Ottawa. Users have found that WestJet is 51% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Seattle to Ottawa one-way?

    The cheapest airlines for a one-way flight from Seattle to Ottawa are WestJet ($105), Air Canada ($150), and United Airlines ($165).

  • 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, January is the cheapest month in which you can book a flight from Seattle to Ottawa (average of $294). Flying from Seattle to Ottawa in May is currently the most expensive (average of $460). 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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Gatineau
Brockville
Pembroke
Petawawa

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Alternative routes for Seattle to Ottawa

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Top 3 airlines flying from Seattle to Ottawa

Discover the top 3 airlines that operate flights from Seattle to Ottawa. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$256Average$525FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$282Average$584FlexibilityNo cancel feeOn-time69%
WestJetCheapest$305Average$487FlexibilityNo cancel feeOn-time60%

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