C$191 Cheap Flights from Seattle / Tacoma International to Ottawa International

Compare Seattle / Tacoma International to Ottawa International flight deals

Find the cheapest month or even day of the year to fly to Ottawa International

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Find the cheapest month to fly from Seattle / Tacoma International to Ottawa International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle / Tacoma International to Ottawa International flights are currently cheapest in January.

Seattle / Tacoma International to Ottawa International: Alternative routes

Compare routes from Seattle / Tacoma International to Ottawa below. You may find an airport to fly into that's cheaper, faster, or easier than Ottawa International.

Seattle to Ottawa: Flight information

The things to know before you go.
Cheapest flight foundC$191
Cheapest month to flyJanuary

Finding cheap flights from Seattle / Tacoma International to Ottawa International: Frequently asked questions

The best price we found for a return flight from Seattle / Tacoma International to Ottawa International is C$339. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Seattle / Tacoma International to Ottawa International. But we found flights with one or more stops from C$339.
As of December 2025, there are no flights flying from Seattle / Tacoma International to Ottawa International.
The cheapest month to fly from Seattle / Tacoma International to Ottawa International is usually May.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Seattle / Tacoma International Airport to Ottawa International Airport on Monday, May 4, 2026.
No airlines currently offer direct flights between Seattle / Tacoma International Airport and Ottawa International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Ottawa International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Ottawa is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, WestJet offers the cheapest flight tickets to Ottawa International.

Flying from Seattle-Tacoma International Airport (SEA) to Ottawa/Macdonald-Cartier International Airport (YOW): what you need to know

  • During popular months such as July, you'll want to get to the airport earlier than usual. Plan to arrive two hours before domestic departures and four hours ahead of an international flight when you fly during peak periods in general.

  • If you want a stopover for your flight from Seattle-Tacoma International Airport to Ottawa/Macdonald-Cartier International Airport, just deselect 'Direct flights only' and check out your options. Here are the popular stopovers between SEA and YOW:

    • Pearson International Airport

    • Vancouver International Airport

    • Calgary International Airport

How to find the cheapest flights from Seattle-Tacoma International Airport (SEA) to Ottawa/Macdonald-Cartier International Airport (YOW)

  • The best price we've seen for a one-way ticket from Seattle-Tacoma International Airport to Ottawa/Macdonald-Cartier International Airport is C$191. The cheapest price for a return flight is C$339. Remember that fares could change due to demand when booking.

  • It's a good idea to book ahead of time if you want to get cheap flight tickets from SEA to YOW. That's because flight prices are based on demand, which tends to rise closer to the date of departure.

  • The 'Whole month' tool shows you the cheapest flight tickets from Seattle-Tacoma International Airport to Ottawa/Macdonald-Cartier International Airport across each month. It's a good way to find a bargain if your trip dates are flexible.

  • Sign into your online account or use the app to set up a Price Alert. You'll get notified right away if there's a better deal on this route. It's simple to do, and it'll save you time looking for cheap flight tickets from SEA to YOW every day.

  • Use filters to tailor your flights from Seattle-Tacoma International Airport to Ottawa/Macdonald-Cartier International Airport. Simply select your preferred arrival and departure times, number of stops and airlines. Or sort your results by 'Cheapest' to find the best deals.

Handy information about Seattle-Tacoma International Airport (SEA)

  • Located around 23 kilometres from central Seattle, Seattle-Tacoma International Airport can be reached in about 18 minutes by car, depending on traffic. The same journey by public transport will take roughly 54 minutes.

  • Want a stress-free start to your vacation? Stay near SEA. Whether you're catching an early flight from Seattle-Tacoma International Airport to Ottawa/Macdonald-Cartier International Airport or just don't like being rushed, these hotels are just the thing:

Arriving at Ottawa/Macdonald-Cartier International Airport (YOW)

  • If you're arriving on a late flight from Seattle-Tacoma International Airport to Ottawa/Macdonald-Cartier International Airport, few things beat the convenience of staying near the terminal. Pick up your bags from the carousel and then be showered and relaxing not long after at one of these hotels near YOW:

Getting from Ottawa/Macdonald-Cartier International Airport (YOW) to central Ottawa

  • Ottawa/Macdonald-Cartier International Airport is approximately 13 kilometres from the center of Ottawa. With a car rental or if you're catching a cab, the drive is around 19 minutes.

  • It takes around 43 minutes to get there using public transport.

When to fly to Ottawa/Macdonald-Cartier International Airport (YOW)

  • The quietest month for a flight from Seattle-Tacoma International Airport to Ottawa/Macdonald-Cartier International Airport is February, while August is the most popular. Choose the ideal time to visit Ottawa based on whether you prefer a bustling atmosphere or a more laid-back vibe.

  • The warmest month in Ottawa is July, with the temperature ranging between 13ºC and 27ºC. Book your flights from Seattle-Tacoma International Airport to Ottawa/Macdonald-Cartier International Airport in this month if you enjoy this type of weather.

  • If you want cooler conditions, search for a cheap ticket from SEA to YOW in January. Temperatures average between -19ºC and -2ºC then.

More about Ottawa

  • As soon as you've locked in your flights from SEA to YOW, you'll want to find a place to stay in Ottawa. Make one of these options your base for exploring this top destination:

  • Every great adventure has to include a little sightseeing. Parliament Hill, Rideau Canal and National Gallery of Canada are attractions you won't want to skip in Ottawa.

Complete your Ottawa trip with hotels and a car rental

  • You've booked a cheap ticket to Ottawa/Macdonald-Cartier International Airport — now it's time to find somewhere to stay, and maybe even a set of wheels. We've compared prices across hundreds of companies to bring you the best hotels and car rental deals in Ottawa.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.