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Cheap flights from Washington to Ottawa from $216

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Ottawa departing on 9/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington to Ottawa

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
7:00 am - 7:20 pm
SEA
-
YOW
9h 20m
1 stop
WestJet Logo
1:20 pm - 6:45 pm
YOW
-
SEA
8h 25m
1 stop
$442WestJet
Thu, Sep 3 - Mon, Sep 7
WestJet Logo
7:35 pm - 5:35 am
SEA
-
YOW
7h 00m
1 stop
WestJet Logo
1:20 pm - 6:45 pm
YOW
-
SEA
8h 25m
1 stop
$448WestJet
Fri, Sep 11 - Sat, Sep 19
WestJet Logo
7:35 pm - 5:35 am
SEA
-
YOW
7h 00m
1 stop
WestJet Logo
1:20 pm - 6:45 pm
YOW
-
SEA
8h 25m
1 stop
$455WestJet
Sat, Aug 8 - Sat, Aug 15
WestJet Logo
7:35 pm - 5:35 am
SEA
-
YOW
7h 00m
1 stop
WestJet Logo
1:20 pm - 6:45 pm
YOW
-
SEA
8h 25m
1 stop
$456WestJet
Mon, Jul 13 - Thu, Aug 27
WestJet Logo
7:00 am - 5:15 pm
SEA
-
YOW
7h 15m
1 stop
WestJet Logo
1:20 pm - 6:45 pm
YOW
-
SEA
8h 25m
1 stop
$463WestJet
Tue, Jul 14 - Thu, Aug 27
Air Canada Logo
7:45 pm - 5:54 am
PDX
-
YOW
7h 09m
1 stop
Air Canada Logo
6:00 am - 2:46 pm
YOW
-
PDX
11h 46m
2 stops
$519Air Canada
Sat, Sep 5 - Wed, Sep 9
Air Canada Logo
7:45 pm - 9:24 am
PDX
-
YOW
10h 39m
2 stops
Air Canada Logo
10:00 am - 7:11 pm
YOW
-
PDX
12h 11m
2 stops
$522Air Canada
Mon, Sep 7 - Sat, Sep 12
United Airlines Logo
10:33 pm - 9:11 am
PDX
-
YOW
7h 38m
1 stop
United Airlines Logo
6:05 am - 9:27 pm
YOW
-
PDX
18h 22m
1 stop
$525United Airlines
Mon, Sep 28 - Fri, Oct 2
United Airlines Logo
11:30 pm - 5:16 pm
PDX
-
YOW
14h 46m
1 stop
United Airlines Logo
6:25 am - 11:33 am
YOW
-
PDX
8h 08m
1 stop
$526United Airlines
Mon, Oct 5 - Wed, Oct 14
Multiple Airlines Logo
5:30 pm - 7:20 pm
PDX
-
YOW
22h 50m
2 stops
Multiple Airlines Logo
7:20 am - 1:50 pm
YOW
-
PDX
9h 30m
1 stop
$527Multiple Airlines
Mon, Sep 28 - Fri, Oct 2

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Air Canada flights from State of Washington to Ottawa

Our best Air Canada deals on State of Washington to Ottawa flight tickets
Air Canada
Sep 5
PDX7:45 pmPortland
7h 09m
1 stop
YOW5:54 amOttawa
Sep 9
YOW6:00 amOttawa
11h 46m
2 stops
PDX2:46 pmPortland
$519
Air Canada
Sep 7
PDX7:45 pmPortland
10h 39m
2 stops
YOW9:24 amOttawa
Sep 12
YOW10:00 amOttawa
12h 11m
2 stops
PDX7:11 pmPortland
$522
Air Canada
Oct 5
PDX7:45 pmPortland
10h 39m
2 stops
YOW9:24 amOttawa
Oct 14
YOW6:00 amOttawa
11h 51m
2 stops
PDX2:51 pmPortland
$528

United Airlines flights from State of Washington to Ottawa

Our best United Airlines deals on State of Washington to Ottawa flight tickets
United Airlines
Sep 28
PDX10:33 pmPortland
7h 38m
1 stop
YOW9:11 amOttawa
Oct 2
YOW6:05 amOttawa
18h 22m
1 stop
PDX9:27 pmPortland
$525
United Airlines
Oct 5
PDX11:30 pmPortland
14h 46m
1 stop
YOW5:16 pmOttawa
Oct 14
YOW6:25 amOttawa
8h 08m
1 stop
PDX11:33 amPortland
$526
United Airlines
Oct 5
PDX6:55 pmPortland
11h 16m
2 stops
YOW9:11 amOttawa
Oct 14
YOW3:10 pmOttawa
9h 17m
1 stop
PDX9:27 pmPortland
$535

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Ottawa 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 832,500 searches. Data last updated June 27, 2026.
Use the filters below to find and compare flights from Washington to Ottawa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 9/3

7:00 am-7:20 pm

1 stop9h 20m

Ottawa

Mon 9/7

1:20 pm-6:45 pm

1 stop8h 25m

$442
Quickest round-trip

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Fri 9/11

7:35 pm-5:35 am

1 stop7h 00m

Ottawa

Sat 9/19

1:20 pm-6:45 pm

1 stop8h 25m

$448

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 8/8

7:35 pm-5:35 am

1 stop7h 00m

Ottawa

Sat 8/15

1:20 pm-6:45 pm

1 stop8h 25m

$455

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Mon 7/13

7:35 pm-5:35 am

1 stop7h 00m

Ottawa

Thu 8/27

1:20 pm-6:45 pm

1 stop8h 25m

$456

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 7/14

7:00 am-5:15 pm

1 stop7h 15m

Ottawa

Thu 8/27

1:20 pm-6:45 pm

1 stop8h 25m

$463

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Sat 9/5

7:45 pm-5:54 am

1 stop7h 09m

Ottawa

Wed 9/9

6:00 am-2:46 pm

2 stops11h 46m

$519

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Mon 9/7

7:45 pm-9:24 am

2 stops10h 39m

Ottawa

Sat 9/12

10:00 am-7:11 pm

2 stops12h 11m

$522

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Mon 9/28

10:33 pm-9:11 am

1 stop7h 38m

Ottawa

Fri 10/2

6:05 am-9:27 pm

1 stop18h 22m

$525

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Mon 10/5

11:30 pm-5:16 pm

1 stop14h 46m

Ottawa

Wed 10/14

6:25 am-11:33 am

1 stop8h 08m

$526

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Mon 9/28

5:30 pm-7:20 pm

2 stops22h 50m

Ottawa

Fri 10/2

7:20 am-1:50 pm

1 stop9h 30m

$527

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 Ottawa from

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

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 Ottawa?

In general, March is the cheapest month to fly from State of Washington to Ottawa. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. The month of May is another great option to travel to Ottawa, with average flight prices from State of Washington averaging around $221.

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

You could potentially save up to 30% on your flight if you consider stops on a State of Washington to Ottawa flight.

Cheap State of Washington to Ottawa flight deals and tips

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

Fastest flight time

7h 00m

Direct flights

None
The fastest flight from State of Washington to Ottawa takes 7h 00m
There are no direct flights from State of Washington to Ottawa. There are no popular flight routes from State of Washington to Ottawa.
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Frequently asked questions about flying from Washington to Ottawa

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

    Prices for flights from Washington to Ottawa Airport refresh daily.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Ottawa Airport.

  • What documentation or ID do you need to fly to Ottawa Airport?

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

Best airlines flying from State of Washington to Ottawa

Compare and see reviews for airlines that fly from State of Washington to Ottawa with momondo
Airline
Rating
Free Cancellation
Price
WestJetPriceFrom $266Free CancellationRating
7.2
3,384 reviews
Search WestJet flights
Air CanadaPriceFrom $357Free CancellationRating
7.1
11,267 reviews
Search Air Canada flights
United AirlinesPriceFrom $362Free CancellationRating
7.4
9,895 reviews
Search United Airlines flights

Traveling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Pembroke
Brockville
Petawawa
Smiths Falls
Perth
Calabogie
Prescott
Winchester
Wakefield

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington to Ottawa. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Washington to Ottawa flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Washington and Ottawa by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Ottawa from Washington are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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