Cheap flights from Ottawa to Seattle

Round-trip
Economy
Ottawa (YOW)
Seattle (SEA)
Depart
Return
Any month
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The best prices from Ottawa to Seattle/Tacoma Intl are usually found in August or May, booked 0 days in advance, depart on a Saturday or Thursday and return on a Tuesday

How to find the cheapest flight from
Ottawa (YOW) to Seattle (SEA)

All the information you need to plan the best YOW to SEA flight in 2021: compare Ottawa to Seattle flight prices with the expected peak season, weather and rainfall in Seattle.
YOW - SEA
Price
C$ 347 - C$ 746
SEA
Temperature
5 - 19 °C
SEA
Precipitation
18 - 168 mm

Popular in

December

High demand for flights, 34% potential price rise

Cheapest in

August

Best time to find cheap flights, 30% potential price drop

Round-trip from

$347

From Ottawa to Seattle/Tacoma Intl

One-way from

C$ 244

One-way flight from Ottawa to Seattle/Tacoma Intl

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Ottawa to Seattle?

Travellers have found that booking a Friday departure is the best way to save up to 20% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, August can be a great choice for travel to Seattle. Flights to Seattle from Ottawa in August are about C$ 492 on average during August, but can be found for as low as C$ 297.

When is the cheapest time to fly from Ottawa to Seattle (YOW - SEA)?

It’s typically best to fly out from Ottawa to Seattle in the evening. Doing so could potentially save you 32% on the flight price compared to flying at noon, which is usually more expensive.

Cheap flights from Ottawa to Seattle in September, October 2021

The best prices found for YOW to SEA flights for September, October
6 Oct - 11 Oct
C$ 572pp
YOW
Ottawa
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Delta
   
2 STOPS
YOW
Ottawa
6 Oct - 11 Oct
C$ 616pp
YOW
Ottawa
Air Canada
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Air Canada
 
1 STOP
YOW
Ottawa
22 Oct - 25 Oct
C$ 666pp
YOW
Ottawa
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Delta
   
2 STOPS
YOW
Ottawa

Ottawa to Seattle 2021 flight deals

Cheap flights to Seattle from Ottawa found for this year
12 Nov - 15 Nov
C$ 441pp
YOW
Ottawa
Air Canada
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Air Canada
   
2 STOPS
YOW
Ottawa
6 Dec - 8 Dec
C$ 442pp
YOW
Ottawa
Air Canada
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Air Canada
   
2 STOPS
YOW
Ottawa
6 Dec - 8 Dec
C$ 449pp
YOW
Ottawa
Air Canada
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Air Canada
 
1 STOP
YOW
Ottawa

One-way flights to Seattle/Tacoma Intl from Ottawa

The cheapest one-way flights from Ottawa to Seattle
1:30 a.m. - 5:39 a.m.
Multiple Airlines
2 stops
32h 09m
YOW - SEA
Multiple Airlines
C$ 244
Gotogate
3:15 p.m. - 6:21 a.m.
WestJet
2 stops
18h 06m
YOW - SEA
WestJet
C$ 403
9:00 a.m. - 2:16 p.m.
Air Canada
1 stop
8h 16m
YOW - SEA
Air Canada
C$ 441
Air Canada

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Ottawa</span> to <span class="emphasized">Seattle</span> flights.

Flight FAQs

From Ottawa to Seattle

Which airlines flying from Ottawa to Seattle/Tacoma Intl have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like WestJet, Air Canada, and United Airlines flying from Ottawa to Seattle/Tacoma Intl have implemented new flexible cancellation policies.

Can I find flights from Ottawa to Seattle for under C$ 400 on Cheapflights?

Yes, there are multiple flights from Ottawa to Seattle for under C$ 400. The cheapest flight booked recently is on Multiple Airlines for just C$ 394, but on average you can expect to pay C$ 509.

How popular is this Ottawa to Seattle flight route?

Within the past month, 298 users have taken a look at flights from Ottawa to Seattle/Tacoma Intl.

What are the cheapest airlines flying from Ottawa to Seattle round-trip?

According to our current data, Air Canada (C$ 436), United Airlines (C$ 465), and Delta (C$ 499) offers the cheapest pricing from Ottawa to Seattle. You may be able to fly from Ottawa to Seattle for 11% less than the average price by searching for these airlines.

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

C$ 247 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$ 295 and C$ 448, respectively.

What are the most popular airlines that fly from Ottawa to Seattle?

The most popular airlines flying from Ottawa to Seattle are American Airlines, Air Canada and Delta. Something to consider prior to booking your flight.

What are the cheapest flights from Ottawa to Seattle?

While on average a flight from Ottawa to Seattle is generally C$ 698, our data shows the cheapest flight currently is C$ 200. When looking at the most popular route, (Ottawa - Seattle/Tacoma Intl), you can expect to pay C$ 394 for that flight.

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COVID Restrictions

View COVID Travel Restrictions for Seattle (SEA)

Do I need a COVID test to fly to Seattle from Ottawa?

Information is based on travel restrictions from Ottawa to Seattle/Tacoma Intl

Most visitors from Ottawa need to provide a negative COVID-19 test result and/or quarantine to enter Seattle/Tacoma Intl.

COVID-19 testing requirements
Visitors from Ottawa must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Ottawa are not required to quarantine after entering Seattle/Tacoma Intl.

Do I need a test to fly back to Ottawa from Seattle?

Returning to Ottawa from Seattle/Tacoma Intl

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) test taken 72 hours before departing to Ottawa.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Ottawa.

Hide COVID Travel Restrictions for Seattle (SEA)

Destination information for Seattle

Things to know before you go - useful duration and weather info for your trip from Ottawa to Seattle.
Today's exchange rate
C$ 1 = $0.79

Airports servicing Ottawa

Airports servicing Seattle

Top 5 airlines flying from Ottawa to Seattle/Tacoma Intl

The chart below displays the airlines Cheapflights users travelling from Ottawa to Seattle choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
American Airlines
C$ 209 C$ 513 No cancel fee 71%
Search American Airlines flights
United Airlines
C$ 258 C$ 590 No cancel fee 69%
Search United Airlines flights
Air Canada
C$ 280 C$ 662 No cancel fee 67%
Search Air Canada flights
WestJet
C$ 335 C$ 470 No cancel fee 60%
Search WestJet flights
Delta
C$ 346 C$ 557 No cancel fee N/A
Search Delta flights
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