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

WestJet, United Airlines, and American 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 59% 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.

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 March 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$ 296 Cheap Flights from Ottawa to Washington in 2026

1 adult

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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.

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

YOW

SEA

11h 39m

2 stops

3:20 p.m. - 12:30 p.m.

SEA

YOW

18h 10m

2 stops

C$ 432WestJet

Tue, 21 Apr - Sat, 25 Apr

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

YOW

SEA

11h 39m

2 stops

3:20 p.m. - 3:20 p.m.

SEA

YOW

21h 00m

1 stop

C$ 439WestJet

Tue, 21 Apr - Sat, 25 Apr

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$ 443WestJet

Fri, 29 May - Fri, 5 Jun

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

YOW

SEA

11h 39m

2 stops

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

SEA

YOW

30h 29m

2 stops

C$ 449WestJet

Wed, 8 Apr - Tue, 14 Apr

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$ 451WestJet

Tue, 28 Apr - Tue, 5 May

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

YOW

SEA

8h 25m

1 stop

10:30 a.m. - 12:20 a.m.

SEA

YOW

10h 50m

2 stops

C$ 461WestJet

Tue, 28 Apr - Tue, 5 May

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$ 462WestJet

Thu, 28 May - Fri, 5 Jun

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

YOW

SEA

11h 39m

2 stops

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

SEA

YOW

30h 29m

2 stops

C$ 464WestJet

Thu, 16 Apr - Sun, 19 Apr

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

YOW

SEA

11h 39m

2 stops

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

SEA

YOW

30h 29m

2 stops

C$ 465WestJet

Wed, 8 Apr - Tue, 14 Apr

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

YOW

SEA

14h 50m

2 stops

10:30 a.m. - 12:20 a.m.

SEA

YOW

10h 50m

2 stops

C$ 469WestJet

Fri, 1 May - Sun, 3 May

Air Canada flights from Ottawa to State of Washington

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

Air Canada

1 Jun

YOW6:05 p.m.Ottawa

7h 38m

1 stop

SEA10:43 p.m.Seattle/Tacoma Intl

6 Jun

SEA5:40 a.m.Seattle/Tacoma Intl

8h 42m

2 stops

YOW5:22 p.m.Ottawa

C$ 554

Air Canada

9 Apr

YOW7:45 a.m.Ottawa

10h 20m

1 stop

SEA3:05 p.m.Seattle/Tacoma Intl

12 Apr

SEA8:00 p.m.Seattle/Tacoma Intl

7h 45m

1 stop

YOW6:45 a.m.Ottawa

C$ 565

Air Canada

3 Jun

YOW10:00 a.m.Ottawa

12h 05m

2 stops

PDX7:05 p.m.Portland

5 Jun

PDX7:45 p.m.Portland

12h 20m

2 stops

YOW11:05 a.m.Ottawa

C$ 665

WestJet flights from Ottawa to State of Washington

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

WestJet

21 Apr

YOW5:40 a.m.Ottawa

11h 39m

2 stops

SEA2:19 p.m.Seattle/Tacoma Intl

25 Apr

SEA3:20 p.m.Seattle/Tacoma Intl

18h 10m

2 stops

YOW12:30 p.m.Ottawa

C$ 432

WestJet

21 Apr

YOW5:40 a.m.Ottawa

11h 39m

2 stops

SEA2:19 p.m.Seattle/Tacoma Intl

25 Apr

SEA3:20 p.m.Seattle/Tacoma Intl

21h 00m

1 stop

YOW3:20 p.m.Ottawa

C$ 439

WestJet

29 May

YOW1:20 p.m.Ottawa

8h 25m

1 stop

SEA6:45 p.m.Seattle/Tacoma Intl

5 Jun

SEA7:35 p.m.Seattle/Tacoma Intl

7h 00m

1 stop

YOW5:35 a.m.Ottawa

C$ 443

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 21/4

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

2 stops11h 39m

Seattle/Tacoma Intl

Sat 25/4

3:20 p.m.-12:30 p.m.

2 stops18h 10m

C$ 432

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 21/4

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

2 stops11h 39m

Seattle/Tacoma Intl

Sat 25/4

3:20 p.m.-3:20 p.m.

1 stop21h 00m

C$ 439

Quickest round-trip

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Fri 29/5

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

1 stop8h 25m

Seattle/Tacoma Intl

Fri 5/6

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

1 stop7h 00m

C$ 443

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$ 449

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 28/4

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

1 stop8h 25m

Seattle/Tacoma Intl

Tue 5/5

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

1 stop7h 00m

C$ 451

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 28/4

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

1 stop8h 25m

Seattle/Tacoma Intl

Tue 5/5

10:30 a.m.-12:20 a.m.

2 stops10h 50m

C$ 461

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Thu 28/5

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

1 stop8h 25m

Seattle/Tacoma Intl

Fri 5/6

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

1 stop7h 00m

C$ 462

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Thu 16/4

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

2 stops11h 39m

Seattle/Tacoma Intl

Sun 19/4

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

2 stops30h 29m

C$ 464

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$ 465

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Fri 1/5

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

2 stops14h 50m

Seattle/Tacoma Intl

Sun 3/5

10:30 a.m.-12:20 a.m.

2 stops10h 50m

C$ 469

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$ 391. 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$ 462.

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$ 558 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$ 414 on momondo.

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

You could potentially save up to 72% 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?
The number of operators available for flights from Ottawa Airport to Washington is 3 as of March 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$ 250	Free Cancellation	Rating 7.4 9,462 reviews	Search United Airlines flights
WestJet	PriceFrom C$ 344	Free Cancellation	Rating 7.2 3,300 reviews	Search WestJet flights
Air Canada	PriceFrom C$ 365	Free Cancellation	Rating 7.1 10,835 reviews	Search Air Canada 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.