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$191+ Cheap flights from Ottawa (YOW) to Washington

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SEA
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Ottawa to Washington

Cheapest flights from Ottawa to Washington
Explore the most affordable flight options available from Ottawa to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This oojo deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:40 am
YOW
-
SEA
2 stops11h 39m
WestJet
Sun 3/83:10 pm
SEA
-
YOW
2 stops24h 13m
WestJet
Deal found 1/27$267
This oojo deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/85:40 am
YOW
-
SEA
2 stops11h 39m
WestJet
Tue 4/143:10 pm
SEA
-
YOW
1 stop22h 43m
WestJet
Deal found 1/27$271
This FlightHub deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/151:20 pm
YOW
-
SEA
1 stop8h 25m
WestJet
Sat 5/2310:30 am
SEA
-
YOW
1 stop25h 55m
WestJet
Deal found 1/28$273
This oojo deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:15 am
YOW
-
PDX
2 stops10h 05m
WestJet
Tue 7/282:00 pm
PDX
-
YOW
1 stop7h 40m
WestJet
Deal found 1/27$430
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/243:55 pm
YOW
-
PDX
1 stop31h 54m
Multiple Airlines
Tue 3/35:39 pm
PDX
-
YOW
2 stops42h 05m
Multiple Airlines
Deal found 1/27$482
This Air Canada deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:45 am
YOW
-
PDX
1 stop9h 55m
Air Canada
Wed 3/117:05 pm
PDX
-
YOW
1 stop8h 38m
Air Canada
Deal found 1/26$518
This United Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/109:45 am
YOW
-
PDX
2 stops16h 19m
United Airlines
Wed 3/117:00 am
PDX
-
YOW
1 stop7h 12m
United Airlines
Deal found 1/26$523

Find flight deals from Ottawa to Washington

Keep the following information in mind while searching for Ottawa to Washington flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$267
(oojo)

One-way from

$191
(Air Canada)

Popular in

December

Cheapest in

January

Average price

$318
Provider with most accurate pricing for Ottawa-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ottawa-Seattle/Tacoma Intl flights.
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From Ottawa to Washington
Search Deals
One-way flight from Ottawa to Washington
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($14 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ottawa to 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, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from Ottawa to Washington that are best for you.

Fly from

Ottawa

Fly to

Washington

Route

Depart

Return

Price

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 3/4

5:40 am-2:19 pm

2 stops11h 39m

Seattle/Tacoma Intl

Sun 3/8

3:10 pm-6:23 pm

2 stops24h 13m

$267

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 4/8

5:40 am-2:19 pm

2 stops11h 39m

Seattle/Tacoma Intl

Tue 4/14

3:10 pm-12:39 am

2 stops30h 29m

$277

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Fri 5/15

1:20 pm-6:45 pm

1 stop8h 25m

Seattle/Tacoma Intl

Sat 5/23

10:30 am-12:30 pm

2 stops23h 00m

$278

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 2/24

5:40 am-2:19 pm

2 stops11h 39m

Seattle/Tacoma Intl

Tue 3/3

8:00 pm-6:43 am

1 stop7h 43m

$313

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 2/24

5:50 pm-10:57 pm

1 stop8h 07m

Seattle/Tacoma Intl

Tue 3/3

8:00 pm-6:43 am

1 stop7h 43m

$319

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 2/10

5:50 pm-10:57 pm

1 stop8h 07m

Seattle/Tacoma Intl

Tue 2/24

8:00 pm-6:43 am

1 stop7h 43m

$332

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Sat 4/4

7:45 am-3:03 pm

1 stop10h 18m

Seattle/Tacoma Intl

Sun 4/12

8:00 pm-6:45 am

1 stop7h 45m

$342

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 3/3

5:50 pm-10:57 pm

1 stop8h 07m

Seattle/Tacoma Intl

Wed 3/4

5:40 am-3:45 pm

1 stop7h 05m

$345

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 2/10

6:00 am-9:15 pm

2 stops18h 15m

Seattle/Tacoma Intl

Tue 2/24

2:20 pm-1:34 pm

2 stops20h 14m

$348

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Tue 7/14

6:15 am-1:20 pm

2 stops10h 05m

Portland

Tue 7/28

2:00 pm-12:40 am

1 stop7h 40m

$430

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 29 results
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Best time to book a flight from Ottawa to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Ottawa with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ottawa to Washington

What is the cheapest month to book a flight from Ottawa to State of Washington?

Currently, January is the cheapest month in which you can book a flight from Ottawa to State of Washington (average of $152). Flying from Ottawa to State of Washington in December is currently the most expensive (average of $340). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Ottawa to State of Washington?

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington. Reviews last updated January 29, 2026.
Read through reviews of airlines operating flights from Ottawa to Washington, such as United Airlines, WestJet, and Air Canada. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,215 reviews

Overall

7.4

Crew

8.1

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,215 reviews
United Airlines
7.4
Good
9,215 reviews

Overall

7.4

Crew

8.1

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
WestJet
7.2
Good
3,253 reviews
United Airlines
7.4
Good
9,215 reviews

Overall

7.4

Crew

8.1

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Air Canada
7.1
Good
10,667 reviews
United Airlines
7.4
Good
9,215 reviews

Overall

7.4

Crew

8.1

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Related info for your journey

Find useful and relevant information for your journey from Ottawa to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ottawa to Washington?

    If you book a flight to Washington from Ottawa, you will be flying from Ottawa, which is the city’s only airport. Ottawa (YOW) is located 6.6 mi from the center of Ottawa.

  • How long is the flight from Ottawa to State of Washington?

    There are many flights that can get you from Ottawa to State of Washington in 11h 39m. Fly via WestJet to get the fastest option. Ottawa and State of Washington are separated by a distance of 2193 mi.

  • What are the cheapest airlines to fly from Ottawa to State of Washington one-way?

    $155 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Canada and United Airlines, with prices starting from $198 and $198, respectively.

  • Can I find deals for flights from Ottawa to Washington that include hotel bookings?

    Yes. In addition to deals on Ottawa to Washington flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ottawa to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to Washington.

  • Can I find deals for business class flights from Ottawa to Washington?

    Yes. Cheapflights offers flight deals from Ottawa to Washington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ottawa to State of Washington?

    Currently, January is the cheapest month in which you can book a flight from Ottawa to State of Washington (average of $152). Flying from Ottawa to State of Washington in December is currently the most expensive (average of $340). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Ottawa to Washington

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Top 3 airlines flying from Ottawa to Washington

Discover the top 3 airlines that operate flights from Ottawa to Washington. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$275Average$422FlexibilityNo cancel feeOn-time69%
WestJetCheapest$277Average$480FlexibilityNo cancel feeOn-time60%
Air CanadaCheapest$290Average$502FlexibilityNo cancel feeOn-time67%

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