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Cheap flights from Ottawa to Washington from C$ 198

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 Washington departing on 11/3. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
5:40 a.m. - 2:19 p.m.
YOW
-
SEA
11h 39m
2 stops
WestJet Logo
7:35 p.m. - 5:40 a.m.
SEA
-
YOW
7h 05m
1 stop
C$ 316WestJet
Thu, 23 Apr - Tue, 28 Apr
WestJet Logo
6:00 a.m. - 2:19 p.m.
YOW
-
SEA
11h 19m
1 stop
WestJet Logo
7:35 p.m. - 5:40 a.m.
SEA
-
YOW
7h 05m
1 stop
C$ 349WestJet
Thu, 23 Apr - Tue, 28 Apr
WestJet Logo
5:40 a.m. - 2:19 p.m.
YOW
-
SEA
11h 39m
2 stops
WestJet Logo
7:35 p.m. - 12:30 p.m.
SEA
-
YOW
13h 55m
2 stops
C$ 350WestJet
Thu, 23 Apr - Tue, 28 Apr
WestJet Logo
5:40 a.m. - 2:19 p.m.
YOW
-
SEA
11h 39m
2 stops
WestJet Logo
3:10 p.m. - 4:53 p.m.
SEA
-
YOW
22h 43m
1 stop
C$ 371WestJet
Wed, 4 Mar - Wed, 11 Mar
WestJet Logo
5:40 a.m. - 2:19 p.m.
YOW
-
SEA
11h 39m
2 stops
WestJet Logo
3:10 p.m. - 12:39 a.m.
SEA
-
YOW
30h 29m
2 stops
C$ 379WestJet
Wed, 4 Mar - Wed, 11 Mar
Multiple Airlines Logo
5:40 a.m. - 2:19 p.m.
YOW
-
SEA
11h 39m
2 stops
Multiple Airlines Logo
5:40 a.m. - 8:26 p.m.
SEA
-
YOW
11h 46m
2 stops
C$ 447Multiple Airlines
Wed, 25 Feb - Sun, 1 Mar
Air Canada Logo
6:00 p.m. - 10:50 p.m.
YOW
-
SEA
7h 50m
1 stop
Air Canada Logo
8:00 p.m. - 6:45 a.m.
SEA
-
YOW
7h 45m
1 stop
C$ 458Air Canada
Wed, 8 Apr - Tue, 14 Apr
Air Canada Logo
5:45 a.m. - 2:40 p.m.
YOW
-
PDX
11h 55m
2 stops
Air Canada Logo
7:05 p.m. - 9:23 a.m.
PDX
-
YOW
11h 18m
2 stops
C$ 669Air Canada
Thu, 19 Mar - Wed, 25 Mar
Air Canada Logo
7:45 a.m. - 2:40 p.m.
YOW
-
PDX
9h 55m
1 stop
Air Canada Logo
7:05 p.m. - 6:43 a.m.
PDX
-
YOW
8h 38m
1 stop
C$ 686Air Canada
Thu, 19 Mar - Thu, 26 Mar
Air Canada Logo
7:45 a.m. - 2:40 p.m.
YOW
-
PDX
9h 55m
1 stop
Air Canada Logo
7:05 p.m. - 6:43 a.m.
PDX
-
YOW
8h 38m
1 stop
C$ 709Air Canada
Tue, 10 Mar - Wed, 11 Mar

United Airlines flights from Ottawa to State of Washington

Our best United Airlines deals on Ottawa to State of Washington flight tickets
United Airlines
3 Mar
YOW6:20 a.m.Ottawa
15h 43m
1 stop
SEA7:03 p.m.Seattle/Tacoma Intl
4 Mar
SEA8:17 a.m.Seattle/Tacoma Intl
12h 37m
1 stop
YOW11:54 p.m.Ottawa
C$ 465
United Airlines
9 Apr
YOW10:44 a.m.Ottawa
16h 35m
1 stop
SEA12:19 a.m.Seattle/Tacoma Intl
12 Apr
SEA11:59 p.m.Seattle/Tacoma Intl
11h 00m
1 stop
YOW1:59 p.m.Ottawa
C$ 467
United Airlines
3 Mar
YOW2:05 p.m.Ottawa
11h 38m
2 stops
SEA10:43 p.m.Seattle/Tacoma Intl
4 Mar
SEA11:35 p.m.Seattle/Tacoma Intl
12h 48m
2 stops
YOW3:23 p.m.Ottawa
C$ 561

Air Canada flights from Ottawa to State of Washington

Our best Air Canada deals on Ottawa to State of Washington flight tickets
Air Canada
6 Mar
YOW5:50 p.m.Ottawa
8h 06m
1 stop
SEA10:56 p.m.Seattle/Tacoma Intl
11 Mar
SEA8:00 p.m.Seattle/Tacoma Intl
7h 43m
1 stop
YOW6:43 a.m.Ottawa
C$ 445
Air Canada
8 Apr
YOW6:00 p.m.Ottawa
7h 50m
1 stop
SEA10:50 p.m.Seattle/Tacoma Intl
14 Apr
SEA8:00 p.m.Seattle/Tacoma Intl
7h 45m
1 stop
YOW6:45 a.m.Ottawa
C$ 458
Air Canada
25 Feb
YOW7:15 a.m.Ottawa
15h 01m
2 stops
SEA7:16 p.m.Seattle/Tacoma Intl
1 Mar
SEA8:00 a.m.Seattle/Tacoma Intl
8h 18m
1 stop
YOW7:18 p.m.Ottawa
C$ 462

momondo Fare Finder

 
Customize your flight search to find flights from Ottawa to State of Washington 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, momondo users made 96,600 searches. Data last updated 6 February 2026.
Use the filters below to find and compare flights from Ottawa to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Thu 23/4

5:40 a.m.-2:19 p.m.

2 stops11h 39m

Seattle/Tacoma Intl

Tue 28/4

7:35 p.m.-5:40 a.m.

1 stop7h 05m

C$ 316

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Thu 23/4

6:00 a.m.-2:19 p.m.

1 stop11h 19m

Seattle/Tacoma Intl

Tue 28/4

7:35 p.m.-5:40 a.m.

1 stop7h 05m

C$ 349

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Thu 23/4

5:40 a.m.-2:19 p.m.

2 stops11h 39m

Seattle/Tacoma Intl

Tue 28/4

7:35 p.m.-12:30 p.m.

2 stops13h 55m

C$ 350

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 4/3

5:40 a.m.-2:19 p.m.

2 stops11h 39m

Seattle/Tacoma Intl

Wed 11/3

3:10 p.m.-4:53 p.m.

1 stop22h 43m

C$ 371

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 4/3

5:40 a.m.-2:19 p.m.

2 stops11h 39m

Seattle/Tacoma Intl

Wed 11/3

3:10 p.m.-12:39 a.m.

2 stops30h 29m

C$ 379

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 25/2

5:40 a.m.-2:19 p.m.

2 stops11h 39m

Seattle/Tacoma Intl

Sun 1/3

5:40 a.m.-8:26 p.m.

2 stops11h 46m

C$ 447

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 8/4

6:00 p.m.-10:50 p.m.

1 stop7h 50m

Seattle/Tacoma Intl

Tue 14/4

8:00 p.m.-6:45 a.m.

1 stop7h 45m

C$ 458

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Thu 19/3

5:45 a.m.-2:40 p.m.

2 stops11h 55m

Portland

Wed 25/3

7:05 p.m.-9:23 a.m.

2 stops11h 18m

C$ 669

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Thu 19/3

7:45 a.m.-2:40 p.m.

1 stop9h 55m

Portland

Thu 26/3

7:05 p.m.-6:43 a.m.

1 stop8h 38m

C$ 686

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Tue 10/3

7:45 a.m.-2:40 p.m.

1 stop9h 55m

Portland

Wed 11/3

7:05 p.m.-6:43 a.m.

1 stop8h 38m

C$ 709

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington from

How to get the cheapest flight ticket from Ottawa to State of Washington

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 State of Washington?

In general, January is the cheapest month to fly from Ottawa to State of Washington. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 435. If you’re not able to fly to State of Washington in January, then September is your next best option. Flight prices from Ottawa to State of Washington during September average around C$ 461.

How far in advance should I book a flight to State of Washington?

You are more likely to see cheaper flights to State of Washington from Ottawa when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around C$ 557 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Ottawa for as low as C$ 423 on momondo.

Can stopping save me money on Ottawa to State of Washington flights?

You could potentially save up to 32% on your flight if you consider stops on a Ottawa to State of Washington flight.

Cheap Ottawa to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ottawa to State of Washington

Fastest flight time

8h 17m

Direct flights

None
The fastest flight from Ottawa to State of Washington takes 8h 17m
There are no direct flights from Ottawa to State of Washington. There are no popular flight routes from Ottawa to State of Washington.
Search flight deals

  • When did momondo last update prices for flights from Ottawa Airport to Washington?

    Prices for flights from Ottawa Airport to Washington were last updated today.

  • How many operators does momondo search for flights from Ottawa Airport to Washington?

  • How old do you have to be to fly from Ottawa Airport to Washington?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ottawa Airport to Washington.

  • What documentation or ID do you need to fly to Washington?

    The travel and health documents you'll need for your trip to Washington 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 Washington. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Ottawa to State of Washington

Compare and see reviews for airlines that fly from Ottawa to State of Washington with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom C$ 262Free CancellationRating
7.4
9,240 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 338Free CancellationRating
7.1
10,694 reviews
Search Air Canada flights
WestJetPriceFrom C$ 346Free CancellationRating
7.2
3,255 reviews
Search WestJet flights

Why use momondo?

Why should I use momondo to find a flight deal from Ottawa to Washington?

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 Washington from Ottawa.

Can I find flights from Ottawa to Washington with flexible booking policies on momondo?

Yes. All flights to Washington from Ottawa on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ottawa to Washington?

Once you have performed a search for Ottawa to Washington flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ottawa to Washington right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ottawa to Washington flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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