HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ottawa

$121+ 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 4/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YOW
mar. 8 — mar. 151
sáb. 3/8
sáb. 3/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Ottawa with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Seattle/Tacoma Intl to Ottawa are usually found in September or November, booked 12 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 marzo 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$262
(Kiwi.com)

One-way from

$121
(Trip.com)

Popular in

January

Cheapest in

September

Average price

$469
Provider with most accurate pricing for Seattle/Tacoma Intl-Ottawa flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Ottawa flights.
Search Deals
From Seattle/Tacoma Intl to Ottawa
Search Deals
One-way flight from Seattle/Tacoma Intl to Ottawa
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($92 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

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 marzo 3, 2025.

This Kiwi.com deal was found by Cheapflights users on 3/2. 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.
mar. 3/2511:48 amSEA - YOW
1 stop25h 57mMultiple Airlines
mié. 4/26:10 pmYOW - SEA
1 stop17h 33mMultiple Airlines
Deal found 3/2$262
This Kiwi.com deal was found by Cheapflights users on 3/3. 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.
mar. 6/103:39 pmSEA - YOW
2 stops12h 06mWestJet
dom. 6/226:15 amYOW - SEA
1 stop9h 16mWestJet
Deal found 3/3$380
This 123 Milhas deal was found by Cheapflights users on 3/3. 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 123 Milhas is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/176:00 amSEA - YOW
1 stop22h 34mAir Canada
jue. 4/245:35 pmYOW - SEA
1 stop7h 28mAir Canada
Deal found 3/3$423
This United Airlines deal was found by Cheapflights users on 3/3. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/911:23 pmSEA - YOW
1 stop7h 35mUnited Airlines
lun. 6/235:15 amYOW - SEA
1 stop8h 36mUnited Airlines
Deal found 3/3$469

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 2,558,603 searches. Data last updated marzo 3, 2025.

Fly from

Seattle

Fly to

Ottawa

Route

Depart

Return

Price

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

mar. 3/25

11:48 am-4:45 pm

1 stop25h 57m

Ottawa

mié. 4/2

6:10 pm-8:43 am

1 stop17h 33m

$262

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

mar. 6/10

3:39 pm-6:45 am

2 stops12h 06m

Ottawa

dom. 6/22

6:15 am-12:31 pm

1 stop9h 16m

$380

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

jue. 4/17

6:00 am-7:34 am

1 stop22h 34m

Ottawa

jue. 4/24

5:35 pm-10:03 pm

1 stop7h 28m

$423

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

lun. 6/9

11:23 pm-9:58 am

1 stop7h 35m

Ottawa

lun. 6/23

5:15 am-10:51 am

1 stop8h 36m

$469

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

jue. 4/17

11:36 am-8:20 am

2 stops17h 44m

$121

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

mar. 6/10

3:39 pm-6:45 am

2 stops12h 06m

$173

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

jue. 4/3

5:45 am-4:13 pm

1 stop7h 28m

$215

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

jue. 4/3

3:24 pm-1:24 pm

3 stops19h 00m

$239

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/3

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 March.
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.

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 February 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 12 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 $474). 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 marzo 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 marzo 3, 2025.
Read reviews from past customers who have flown United Airlines, WestJet and Air Canada 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.
United Airlines
7.4
Good
8,679 reviews

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

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

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

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

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

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

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

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?

    According to our current data, WestJet ($380), Air Canada ($423), and United Airlines ($469) offers the cheapest pricing from Seattle to Ottawa. Users have found that WestJet is 31% 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 ($173), Air Canada ($215), and United Airlines ($239).

  • 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 $474). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Ottawa

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Pearson Intl flights
Seattle to Pierre Elliott Trudeau Intl flights
Portland to Pearson Intl flights
Seattle to Region of Waterloo Intl flights
Seattle to Hamilton flights
Seattle to Toronto Island flights
Portland to Pierre Elliott Trudeau Intl flights
Seattle to London flights
Portland to Toronto Island flights
Spokane to Pearson Intl flights
Portland to Ottawa flights
Spokane to Hamilton flights
Seattle to Thunder Bay flights
Pasco to Pierre Elliott Trudeau Intl flights
Pasco to Pearson Intl flights
Seattle to Timmins flights
Walla Walla to Pierre Elliott Trudeau Intl flights
Bellingham to Pearson Intl flights
Bellingham to Pierre Elliott Trudeau Intl flights
Bellingham to Ottawa flights

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 marzo 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$257Average$554FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$282Average$582FlexibilityNo cancel feeOn-time69%
WestJetCheapest$307Average$491FlexibilityNo cancel feeOn-time60%
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.