Cheap flights from Ottawa to Seattle from C$ 256
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ottawa to Seattle departing on 29/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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WestJet flights from Ottawa to Seattle
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Air Canada flights from Ottawa to Seattle
Our best Air Canada deals on Ottawa to Seattle flight tickets
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How to get the cheapest flight ticket from Ottawa to Seattle
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Seattle?
If you aren’t able to travel to Seattle during the month of August, then flying in March is also cheap. Prices for this month can be found on momondo for an average of C$ 529.
What is the cheapest day to depart on your flight to Seattle?
Our data shows that Thursday is the least expensive day to fly to Seattle. Tickets to fly out on this day can be as low as C$ 584. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around C$ 664. These prices are subject to change though, so be sure to set up a Price Alert for flights to Seattle.
What is the cheapest time of day to depart on your flight to Seattle?
Our most recent data shows that the best time of day to fly to Seattle is in the evening. Flights from Ottawa to Seattle during this time can be as low as C$ 587. Flights at noon are often more expensive with an average ticket price of C$ 684.
How far in advance should I book a flight to Seattle?
You are more likely to see cheaper flights to Seattle from Ottawa when booking 20 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around C$ 578 when searching 20 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Ottawa for as low as C$ 420 on momondo.
What is the cheapest airline that flies from Ottawa to Seattle/Tacoma Intl?
WestJet, Air Canada, and United Airlines are the most popular carriers operating from Ottawa to Seattle/Tacoma Intl
Which airlines fly to Seattle?
Air Canada, WestJet and United Airlines are the top three most popular airlines that fly to Seattle from Ottawa according to our data. Air Canada is the first choice among our users, with 62% of people opting to fly with this airline when travelling to Seattle. Keep in mind that there are 5 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.
When to book flights from Ottawa to Seattle
Cheap Ottawa to Seattle (YOW to SEA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Ottawa to Seattle
How far is Ottawa to Seattle/Tacoma Intl by plane?
The distance between Ottawa and Seattle/Tacoma Intl is about 3521.0 km. 7h 16m is a normal flight duration for this route.
When did momondo last update prices for flights from Ottawa Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Ottawa Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Ottawa Airport to Seattle/Tacoma Intl Airport?
There are 3 operators available for flights from Ottawa Airport to Seattle/Tacoma Intl Airport as of June 2025.
How old do you have to be to fly from Ottawa Airport to Seattle/Tacoma Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ottawa Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Ottawa to Seattle?
Based on momondo bookings for flights between Ottawa and Seattle, the leading airline is Air Canada, making up 57% of the total bookings. Other popular airlines include WestJet with 28% and United Airlines with 14%.
Best airlines flying from Ottawa to Seattle
Compare and see reviews for airlines that fly from Ottawa to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom C$ 342 | Free Cancellation | Rating 7.2 2,868 reviews | |||
| PriceFrom C$ 371 | Free Cancellation | Rating 7.1 9,537 reviews | |||
| PriceFrom C$ 470 | Free Cancellation | Rating 7.4 8,790 reviews |
Travelling to a place near Seattle?
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Why should I use momondo to find a flight deal from Ottawa to Seattle?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from Ottawa.
Can I find flights from Ottawa to Seattle with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Seattle from Ottawa with this policy.
How can momondo help me find flights from Ottawa to Seattle?
momondo provides multiple filters to help you find the best flight to Seattle from Ottawa. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Ottawa to Seattle right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Ottawa to Seattle flights. All you need is a valid email address and we will do the rest; it is that quick and easy.