Which airlines fly to State of Washington?

Air Canada, WestJet and United Airlines are the top three most popular airlines that fly to State of Washington from Ottawa according to our data. Air Canada is the first choice among our users, with 48% of people opting to fly with this airline when travelling to State of Washington. Keep in mind that there are 5 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Ottawa to Washington?

WestJet and United Airlines are the most popular carriers operating from Ottawa to Washington

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?

The number of operators available for flights from Ottawa Airport to Washington is 4 as of August 2026.

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.

C$ 249 Cheap Flights from Ottawa to Washington in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ottawa to Washington

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:20 p.m. - 6:45 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

8h 25m1 stop Calgary

7:35 p.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

7h 00m1 stop Calgary

C$ 463WestJet

Wed, 23 Sep - Wed, 30 Sep

12:25 p.m. - 9:00 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

11h 35m2 stops Winnipeg Calgary

7:35 p.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

7h 00m1 stop Calgary

C$ 464WestJet

Thu, 3 Sep - Thu, 10 Sep

2:45 p.m. - 10:47 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

11h 02m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

8:00 a.m. - 7:10 p.m.SEA Seattle/Tacoma Intl-YOW Ottawa

8h 10m1 stop Toronto Pearson Intl

C$ 570Air Canada

Thu, 17 Sep - Thu, 24 Sep

6:05 p.m. - 10:42 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

7h 37m1 stop Vancouver Intl

8:40 a.m. - 11:11 p.m.SEA Seattle/Tacoma Intl-YOW Ottawa

11h 31m2 stops Vancouver Intl Calgary

C$ 575Air Canada

Sat, 24 Oct - Wed, 4 Nov

6:00 a.m. - 7:07 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

16h 07m3 stops Washington, D.C. Dulles Intl Indianapolis Chicago O'Hare Intl

10:58 p.m. - 4:38 p.m.SEA Seattle/Tacoma Intl-YOW Ottawa

14h 40m1 stop Newark

C$ 575United Airlines

Wed, 26 Aug - Wed, 26 Aug

6:00 a.m. - 7:07 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

16h 07m3 stops Washington, D.C. Dulles Intl Indianapolis Chicago O'Hare Intl

11:04 p.m. - 9:56 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

7h 52m1 stop Washington, D.C. Dulles Intl

C$ 575United Airlines

Thu, 27 Aug - Thu, 27 Aug

2:00 p.m. - 10:05 a.m.YOW Ottawa-SEA Seattle/Tacoma Intl

23h 05m3 stops Hamilton Calgary Vancouver Intl

7:35 p.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

7h 00m1 stop Calgary

C$ 625Multiple Airlines

Mon, 21 Sep - Mon, 28 Sep

2:45 p.m. - 10:47 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

11h 02m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

5:50 a.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

20h 45m3 stops Vancouver Intl Edmonton Calgary

C$ 629Multiple Airlines

Thu, 17 Sep - Thu, 24 Sep

1:20 p.m. - 6:45 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

8h 25m1 stop Calgary

7:35 p.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

7h 00m1 stop Calgary

C$ 1,380Delta

Mon, 12 Oct - Wed, 21 Oct

1:20 p.m. - 6:45 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

8h 25m1 stop Calgary

7:35 p.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

7h 00m1 stop Calgary

C$ 1,380Delta

Mon, 12 Oct - Fri, 23 Oct

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Air Canada flights from Ottawa to State of Washington

Our best Air Canada deals on Ottawa to State of Washington flight tickets

Air Canada

24 Oct

YOW5:00 a.m.Ottawa

7h 52m

1 stop

SEA9:52 a.m.Seattle/Tacoma Intl

2 Nov

SEA8:40 a.m.Seattle/Tacoma Intl

11h 31m

2 stops

YOW11:11 p.m.Ottawa

C$ 575

Air Canada

24 Oct

YOW6:05 p.m.Ottawa

7h 37m

1 stop

SEA10:42 p.m.Seattle/Tacoma Intl

7 Nov

SEA7:45 a.m.Seattle/Tacoma Intl

8h 00m

1 stop

YOW6:45 p.m.Ottawa

C$ 579

Air Canada

25 Oct

YOW7:50 a.m.Ottawa

13h 32m

2 stops

SEA6:22 p.m.Seattle/Tacoma Intl

4 Nov

SEA8:40 a.m.Seattle/Tacoma Intl

11h 31m

2 stops

YOW11:11 p.m.Ottawa

C$ 583

United Airlines flights from Ottawa to State of Washington

Our best United Airlines deals on Ottawa to State of Washington flight tickets

United Airlines

29 Oct

YOW6:00 a.m.Ottawa

14h 54m

2 stops

SEA5:54 p.m.Seattle/Tacoma Intl

4 Nov

SEA5:05 a.m.Seattle/Tacoma Intl

13h 51m

2 stops

YOW9:56 p.m.Ottawa

C$ 582

United Airlines

24 Aug

YOW3:10 p.m.Ottawa

9h 53m

1 stop

PDX10:03 p.m.Portland

28 Aug

PDX11:02 p.m.Portland

11h 57m

1 stop

YOW1:59 p.m.Ottawa

C$ 589

United Airlines

24 Aug

YOW5:57 p.m.Ottawa

18h 53m

1 stop

PDX9:50 a.m.Portland

28 Aug

PDX7:07 p.m.Portland

11h 49m

2 stops

YOW9:56 a.m.Ottawa

C$ 601

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

OttawaSeattle

YOW Ottawa - SEA Seattle/Tacoma Intl

YOWSEA

Ottawa

Wed 23/9

1:20 p.m.-6:45 p.m.

1 stop8h 25m

Seattle/Tacoma Intl

Wed 30/9

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

1 stop7h 00m

C$ 463

OttawaSeattle

YOW Ottawa - SEA Seattle/Tacoma Intl

YOWSEA

Ottawa

Thu 3/9

12:25 p.m.-9:00 p.m.

2 stops11h 35m

Seattle/Tacoma Intl

Thu 10/9

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

1 stop7h 00m

C$ 464

OttawaSeattle

YOW Ottawa - SEA Seattle/Tacoma Intl

YOWSEA

Ottawa

Thu 17/9

2:45 p.m.-10:47 p.m.

2 stops11h 02m

Seattle/Tacoma Intl

Thu 24/9

8:00 a.m.-7:10 p.m.

1 stop8h 10m

C$ 570

OttawaSeattle

YOW Ottawa - SEA Seattle/Tacoma Intl

YOWSEA

Ottawa

Sat 24/10

6:05 p.m.-10:42 p.m.

1 stop7h 37m

Seattle/Tacoma Intl

Wed 4/11

8:40 a.m.-11:11 p.m.

2 stops11h 31m

C$ 575

OttawaSeattle

YOW Ottawa - SEA Seattle/Tacoma Intl

YOWSEA

Ottawa

Wed 26/8

6:00 a.m.-7:07 p.m.

3 stops16h 07m

Seattle/Tacoma Intl

Wed 26/8

10:58 p.m.-4:38 p.m.

1 stop14h 40m

C$ 575

OttawaSeattle

YOW Ottawa - SEA Seattle/Tacoma Intl

YOWSEA

Ottawa

Thu 27/8

6:00 a.m.-7:07 p.m.

3 stops16h 07m

Seattle/Tacoma Intl

Thu 27/8

11:04 p.m.-9:56 a.m.

1 stop7h 52m

C$ 575

OttawaSeattle

YOW Ottawa - SEA Seattle/Tacoma Intl

YOWSEA

Ottawa

Mon 21/9

2:00 p.m.-10:05 a.m.

3 stops23h 05m

Seattle/Tacoma Intl

Mon 28/9

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

1 stop7h 00m

C$ 625

OttawaSeattle

YOW Ottawa - SEA Seattle/Tacoma Intl

YOWSEA

Ottawa

Thu 17/9

2:45 p.m.-10:47 p.m.

2 stops11h 02m

Seattle/Tacoma Intl

Thu 24/9

5:50 a.m.-5:35 a.m.

3 stops20h 45m

C$ 629

OttawaSeattle

YOW Ottawa - SEA Seattle/Tacoma Intl

YOWSEA

Ottawa

Mon 12/10

1:20 p.m.-6:45 p.m.

1 stop8h 25m

Seattle/Tacoma Intl

Wed 21/10

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

1 stop7h 00m

C$ 1,380

OttawaSeattle

YOW Ottawa - SEA Seattle/Tacoma Intl

YOWSEA

Ottawa

Mon 12/10

1:20 p.m.-6:45 p.m.

1 stop8h 25m

Seattle/Tacoma Intl

Fri 23/10

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

1 stop7h 00m

C$ 1,380

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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$ 398. 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$ 471.

How far in advance should I book a flight from Ottawa to 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$ 611 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$ 432 on momondo.

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

You could potentially save up to 47% 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 03m
Direct flights	None

The fastest flight from Ottawa to State of Washington takes 8h 03m

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

Frequently asked questions about flying from Ottawa to Washington

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?
The number of operators available for flights from Ottawa Airport to Washington is 4 as of August 2026.
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
Air Canada	PriceFrom C$ 253	Free Cancellation	Rating 7.1 11,449 reviews	Search Air Canada flights
United Airlines	PriceFrom C$ 254	Free Cancellation	Rating 7.4 10,085 reviews	Search United Airlines flights
WestJet	PriceFrom C$ 341	Free Cancellation	Rating 7.2 3,426 reviews	Search WestJet flights
Delta	PriceFrom C$ 397	Free Cancellation	Rating 7.8 8,502 reviews	Search Delta 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.