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Cheap flights from Ottawa to Washington from C$ 197

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 1/2. 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 39m2 stops
WestJet Logo
3:10 p.m. - 4:53 p.m.
SEA
-
YOW
22h 43m1 stop
C$ 331WestJet
Wed, 8 Apr - Tue, 14 Apr
WestJet Logo
5:40 a.m. - 2:19 p.m.
YOW
-
SEA
11h 39m2 stops
WestJet Logo
3:10 p.m. - 12:39 a.m.
SEA
-
YOW
30h 29m2 stops
C$ 338WestJet
Wed, 8 Apr - Tue, 14 Apr
WestJet Logo
5:15 p.m. - 8:28 p.m.
YOW
-
SEA
30h 13m2 stops
WestJet Logo
7:05 a.m. - 5:28 a.m.
SEA
-
YOW
19h 23m2 stops
C$ 342WestJet
Fri, 15 May - Tue, 19 May
Air Canada Logo
4:15 p.m. - 10:16 p.m.
YOW
-
SEA
9h 01m1 stop
Air Canada Logo
5:50 a.m. - 3:46 p.m.
SEA
-
YOW
6h 56m1 stop
C$ 376Air Canada
Tue, 13 Jan - Tue, 20 Jan
Air Canada Logo
4:15 p.m. - 10:16 p.m.
YOW
-
SEA
9h 01m1 stop
Air Canada Logo
5:50 a.m. - 7:15 p.m.
SEA
-
YOW
10h 25m2 stops
C$ 387Air Canada
Tue, 13 Jan - Tue, 20 Jan
United Airlines Logo
6:20 a.m. - 3:27 p.m.
YOW
-
PDX
12h 07m1 stop
United Airlines Logo
3:50 p.m. - 10:26 a.m.
PDX
-
YOW
15h 36m2 stops
C$ 603United Airlines
Wed, 18 Feb - Mon, 23 Feb
Air Canada Logo
6:30 p.m. - 9:15 a.m.
YOW
-
PDX
17h 45m2 stops
Air Canada Logo
7:05 p.m. - 6:43 a.m.
PDX
-
YOW
8h 38m1 stop
C$ 620Air Canada
Sun, 8 Feb - Sat, 14 Feb
Air Canada Logo
5:50 p.m. - 9:15 a.m.
YOW
-
PDX
18h 25m1 stop
Air Canada Logo
7:05 p.m. - 6:43 a.m.
PDX
-
YOW
8h 38m1 stop
C$ 621Air Canada
Sun, 8 Feb - Sat, 14 Feb
United Airlines Logo
6:20 a.m. - 10:32 p.m.
YOW
-
PDX
19h 12m1 stop
United Airlines Logo
7:00 a.m. - 9:18 p.m.
PDX
-
YOW
11h 18m1 stop
C$ 626United Airlines
Mon, 19 Jan - Wed, 21 Jan
United Airlines Logo
5:25 p.m. - 10:10 p.m.
YOW
-
PDX
7h 45m1 stop
United Airlines Logo
5:00 a.m. - 7:00 p.m.
PDX
-
YOW
11h 00m2 stops
C$ 627United Airlines
Thu, 16 Apr - Tue, 21 Apr

Air Canada flights from Ottawa to State of Washington

Our best Air Canada deals on Ottawa to State of Washington flight tickets
Air Canada
13 Jan
YOW4:15 p.m.Ottawa
9h 01m
1 stop
SEA10:16 p.m.Seattle/Tacoma Intl
20 Jan
SEA5:50 a.m.Seattle/Tacoma Intl
6h 56m
1 stop
YOW3:46 p.m.Ottawa
C$ 376
Find similar
Air Canada
13 Jan
YOW4:15 p.m.Ottawa
9h 01m
1 stop
SEA10:16 p.m.Seattle/Tacoma Intl
20 Jan
SEA5:50 a.m.Seattle/Tacoma Intl
10h 25m
2 stops
YOW7:15 p.m.Ottawa
C$ 387
Find similar
Air Canada
31 Jan
YOW5:35 p.m.Ottawa
18h 56m
2 stops
SEA9:31 a.m.Seattle/Tacoma Intl
7 Feb
SEA5:50 a.m.Seattle/Tacoma Intl
6h 55m
1 stop
YOW3:45 p.m.Ottawa
C$ 409
Find similar

United Airlines flights from Ottawa to State of Washington

Our best United Airlines deals on Ottawa to State of Washington flight tickets
United Airlines
20 Jan
YOW7:27 p.m.Ottawa
25h 59m
2 stops
SEA6:26 p.m.Seattle/Tacoma Intl
22 Jan
SEA7:00 a.m.Seattle/Tacoma Intl
11h 18m
1 stop
YOW9:18 p.m.Ottawa
C$ 413
Find similar
United Airlines
3 Feb
YOW5:11 p.m.Ottawa
21h 18m
2 stops
SEA11:29 a.m.Seattle/Tacoma Intl
4 Feb
SEA11:45 p.m.Seattle/Tacoma Intl
10h 47m
1 stop
YOW1:32 p.m.Ottawa
C$ 423
Find similar
United Airlines
18 Feb
YOW6:20 a.m.Ottawa
12h 07m
1 stop
PDX3:27 p.m.Portland
23 Feb
PDX3:50 p.m.Portland
15h 36m
2 stops
YOW10:26 a.m.Ottawa
C$ 603
Find similar

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 18 December 2025.
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

Wed 8/4

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

2 stops11h 39m

Seattle/Tacoma Intl

Tue 14/4

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

1 stop22h 43m

C$ 331

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 8/4

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

2 stops11h 39m

Seattle/Tacoma Intl

Tue 14/4

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

2 stops30h 29m

C$ 338

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Fri 15/5

5:15 p.m.-8:28 p.m.

2 stops30h 13m

Seattle/Tacoma Intl

Tue 19/5

7:05 a.m.-5:28 a.m.

2 stops19h 23m

C$ 342

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 13/1

4:15 p.m.-10:16 p.m.

1 stop9h 01m

Seattle/Tacoma Intl

Tue 20/1

5:50 a.m.-3:46 p.m.

1 stop6h 56m

C$ 376

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 13/1

4:15 p.m.-10:16 p.m.

1 stop9h 01m

Seattle/Tacoma Intl

Tue 20/1

5:50 a.m.-7:15 p.m.

2 stops10h 25m

C$ 387

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Wed 18/2

6:20 a.m.-3:27 p.m.

1 stop12h 07m

Portland

Mon 23/2

3:50 p.m.-10:26 a.m.

2 stops15h 36m

C$ 603

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Sun 8/2

6:30 p.m.-9:15 a.m.

2 stops17h 45m

Portland

Sat 14/2

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

1 stop8h 38m

C$ 620

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Sun 8/2

5:50 p.m.-9:15 a.m.

1 stop18h 25m

Portland

Sat 14/2

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

1 stop8h 38m

C$ 621

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Mon 19/1

6:20 a.m.-10:32 p.m.

1 stop19h 12m

Portland

Wed 21/1

7:00 a.m.-9:18 p.m.

1 stop11h 18m

C$ 626

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Thu 16/4

5:25 p.m.-10:10 p.m.

1 stop7h 45m

Portland

Tue 21/4

5:00 a.m.-7:00 p.m.

2 stops11h 00m

C$ 627

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, September 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$ 468. If you’re not able to fly to State of Washington in September, then January is your next best option. Flight prices from Ottawa to State of Washington during January average around C$ 499.

What is the cheapest day to depart on your flight to State of Washington?

On average, the least expensive day to fly to State of Washington from Ottawa is on a Thursday. momondo users have found tickets for Thursday departures for as low as C$ 589. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to State of Washington on Tuesday is C$ 669.

What is the cheapest time of day to depart on your flight to State of Washington?

According to our data, the cheapest time of day to fly to State of Washington is in the evening. momondo users have found flights departing from Ottawa to State of Washington in the evening for as low as C$ 591. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 689 on average. Flights to State of Washington from Ottawa at noon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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$ 568 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$ 426 on momondo.

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

You could potentially save up to 46% 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

7h 45m

Direct flights

None
The fastest flight from Ottawa to State of Washington takes 7h 45m
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
WestJetPriceFrom C$ 362Free CancellationRating
7.2
3,204 reviews
Search WestJet flights
Air CanadaPriceFrom C$ 405Free CancellationRating
7.1
10,534 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 417Free CancellationRating
7.4
9,092 reviews
Search United Airlines 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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