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

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

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 53% of people opting to fly with this airline when travelling to State of Washington. Keep in mind that there are 4 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

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 3 as of June 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$ 306 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

SEA

8h 25m

1 stop

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

SEA

YOW

7h 00m

1 stop

C$ 531WestJet

Wed, 30 Sep - Sun, 4 Oct

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

YOW

SEA

8h 25m

1 stop

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

SEA

YOW

7h 00m

1 stop

C$ 532WestJet

Wed, 30 Sep - Sun, 4 Oct

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

YOW

SEA

8h 25m

1 stop

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

SEA

YOW

7h 00m

1 stop

C$ 533WestJet

Fri, 25 Sep - Wed, 30 Sep

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

YOW

SEA

8h 25m

1 stop

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

SEA

YOW

7h 00m

1 stop

C$ 538WestJet

Mon, 10 Aug - Sat, 15 Aug

6:55 a.m. - 6:45 p.m.

YOW

SEA

14h 50m

2 stops

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

SEA

YOW

7h 00m

1 stop

C$ 539WestJet

Wed, 30 Sep - Sun, 4 Oct

6:25 a.m. - 11:33 a.m.

YOW

PDX

8h 08m

1 stop

10:43 a.m. - 9:35 p.m.

PDX

YOW

7h 52m

1 stop

C$ 585United Airlines

Tue, 20 Oct - Thu, 22 Oct

6:00 a.m. - 2:51 p.m.

YOW

PDX

11h 51m

2 stops

7:45 p.m. - 5:10 p.m.

PDX

YOW

18h 25m

2 stops

C$ 639Air Canada

Sat, 29 Aug - Tue, 1 Sep

6:00 a.m. - 2:51 p.m.

YOW

PDX

11h 51m

2 stops

7:45 p.m. - 5:10 p.m.

PDX

YOW

18h 25m

2 stops

C$ 640Air Canada

Sat, 29 Aug - Tue, 1 Sep

5:00 a.m. - 9:31 a.m.

YOW

PDX

7h 31m

1 stop

7:45 p.m. - 5:10 p.m.

PDX

YOW

18h 25m

2 stops

C$ 643Air Canada

Sat, 15 Aug - Mon, 24 Aug

6:00 a.m. - 6:53 p.m.

YOW

PDX

15h 53m

3 stops

8:40 a.m. - 11:54 p.m.

PDX

YOW

12h 14m

2 stops

C$ 646United Airlines

Sat, 29 Aug - Tue, 1 Sep

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

14 Sep

YOW5:00 a.m.Ottawa

8h 07m

1 stop

SEA10:07 a.m.Seattle/Tacoma Intl

14 Sep

SEA7:20 p.m.Seattle/Tacoma Intl

7h 38m

1 stop

YOW5:58 a.m.Ottawa

C$ 610

Air Canada

29 Oct

YOW7:50 a.m.Ottawa

13h 32m

2 stops

SEA6:22 p.m.Seattle/Tacoma Intl

2 Nov

SEA10:10 a.m.Seattle/Tacoma Intl

9h 22m

2 stops

YOW10:32 p.m.Ottawa

C$ 617

Air Canada

23 Oct

YOW10:00 a.m.Ottawa

11h 32m

2 stops

SEA6:32 p.m.Seattle/Tacoma Intl

26 Oct

SEA8:40 a.m.Seattle/Tacoma Intl

13h 58m

2 stops

YOW1:38 a.m.Ottawa

C$ 626

WestJet flights from Ottawa to State of Washington

Our best WestJet deals on Ottawa to State of Washington flight tickets

WestJet

30 Sep

YOW1:20 p.m.Ottawa

8h 25m

1 stop

SEA6:45 p.m.Seattle/Tacoma Intl

4 Oct

SEA7:35 p.m.Seattle/Tacoma Intl

7h 00m

1 stop

YOW5:35 a.m.Ottawa

C$ 531

WestJet

30 Sep

YOW1:20 p.m.Ottawa

8h 25m

1 stop

SEA6:45 p.m.Seattle/Tacoma Intl

4 Oct

SEA7:35 p.m.Seattle/Tacoma Intl

7h 00m

1 stop

YOW5:35 a.m.Ottawa

C$ 532

WestJet

25 Sep

YOW1:20 p.m.Ottawa

8h 25m

1 stop

SEA6:45 p.m.Seattle/Tacoma Intl

30 Sep

SEA7:35 p.m.Seattle/Tacoma Intl

7h 00m

1 stop

YOW5:35 a.m.Ottawa

C$ 533

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 30/9

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

1 stop8h 25m

Seattle/Tacoma Intl

Sun 4/10

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

1 stop7h 00m

C$ 531

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 30/9

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

1 stop8h 25m

Seattle/Tacoma Intl

Sun 4/10

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

1 stop7h 00m

C$ 532

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Fri 25/9

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$ 533

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Mon 10/8

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

1 stop8h 25m

Seattle/Tacoma Intl

Sat 15/8

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

1 stop7h 00m

C$ 538

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 30/9

6:55 a.m.-6:45 p.m.

2 stops14h 50m

Seattle/Tacoma Intl

Sun 4/10

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

1 stop7h 00m

C$ 539

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Tue 20/10

6:25 a.m.-11:33 a.m.

1 stop8h 08m

Portland

Thu 22/10

10:43 a.m.-9:35 p.m.

1 stop7h 52m

C$ 585

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Sat 29/8

6:00 a.m.-2:51 p.m.

2 stops11h 51m

Portland

Tue 1/9

7:45 p.m.-5:10 p.m.

2 stops18h 25m

C$ 639

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Sat 29/8

6:00 a.m.-2:51 p.m.

2 stops11h 51m

Portland

Tue 1/9

7:45 p.m.-5:10 p.m.

2 stops18h 25m

C$ 640

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Sat 15/8

5:00 a.m.-9:31 a.m.

1 stop7h 31m

Portland

Mon 24/8

7:45 p.m.-5:10 p.m.

2 stops18h 25m

C$ 643

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Sat 29/8

6:00 a.m.-6:53 p.m.

3 stops15h 53m

Portland

Tue 1/9

8:40 a.m.-11:54 p.m.

2 stops12h 14m

C$ 646

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$ 90. If you’re not able to fly to State of Washington in January, then February is your next best option. Flight prices from Ottawa to State of Washington during February average around C$ 203.

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$ 610 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$ 380 on momondo.

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

You could potentially save up to 59% 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 07m
Direct flights	None

The fastest flight from Ottawa to State of Washington takes 8h 07m

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 3 as of June 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
United Airlines	PriceFrom C$ 259	Free Cancellation	Rating 7.4 9,889 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 275	Free Cancellation	Rating 7.1 11,257 reviews	Search Air Canada flights
WestJet	PriceFrom C$ 347	Free Cancellation	Rating 7.2 3,384 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.