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Cheap flights from Ottawa to Washington from C$ 221

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 24/1. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SEA
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ottawa to Washington

Enter your travel dates to find the best prices.

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 12 December 2025.

Tue 23/127:45 a.m.YOW - PDX
1 stop9h 55mAir Canada
Sun 28/127:00 p.m.PDX - YOW
1 stop8h 43mAir Canada
Deal found 11/12C$ 965
Mon 22/124:15 p.m.YOW - SEA
1 stop9h 01mUnited Airlines
Fri 2/111:15 p.m.SEA - YOW
1 stop12h 12mUnited Airlines
Deal found 10/12C$ 969
Thu 25/127:45 a.m.YOW - PDX
1 stop9h 55mAir Canada
Sun 28/127:00 p.m.PDX - YOW
1 stop8h 43mAir Canada
Deal found 11/12C$ 1,009
Thu 25/123:10 p.m.YOW - PDX
1 stop10h 29mUnited Airlines
Tue 30/1211:02 a.m.PDX - YOW
1 stop7h 16mUnited Airlines
Deal found 11/12C$ 1,027
Thu 18/126:00 a.m.YOW - PDX
2 stops15h 50mWestJet
Thu 25/1212:29 p.m.PDX - YOW
2 stops25h 24mWestJet
Deal found 10/12C$ 1,051
Tue 23/127:45 a.m.YOW - PDX
1 stop9h 55mAir Canada
Sat 27/127:00 p.m.PDX - YOW
1 stop8h 43mAir Canada
Deal found 11/12C$ 1,062
Thu 18/122:15 p.m.YOW - PDX
2 stops26h 05mUnited Airlines
Thu 25/127:10 a.m.PDX - YOW
1 stop11h 08mUnited Airlines
Deal found 10/12C$ 1,069
Sat 27/127:45 a.m.YOW - PDX
1 stop9h 55mAir Canada
Wed 31/127:00 p.m.PDX - YOW
1 stop8h 43mAir Canada
Deal found 11/12C$ 1,095
Sat 27/127:45 a.m.YOW - PDX
1 stop9h 55mAir Canada
Sun 28/127:00 p.m.PDX - YOW
1 stop8h 43mAir Canada
Deal found 11/12C$ 1,096
Sat 27/127:45 a.m.YOW - PDX
1 stop9h 55mAir Canada
Tue 30/127:00 p.m.PDX - YOW
1 stop8h 43mAir Canada
Deal found 11/12C$ 1,103
Thu 25/127:45 a.m.YOW - PDX
1 stop9h 55mAir Canada
Sat 27/127:00 p.m.PDX - YOW
1 stop8h 43mAir Canada
Deal found 11/12C$ 1,105
Sat 27/127:45 a.m.YOW - PDX
1 stop9h 55mAir Canada
Thu 1/17:00 p.m.PDX - YOW
1 stop8h 43mAir Canada
Deal found 11/12C$ 1,107

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 12 December 2025.

Round-trip from

C$ 324

One-way from

C$ 221

Popular in

December

Cheapest in

September

Average price

C$ 679
WestJet
  • WestJet
  • 8/4-14/4
  • 3 total stops
  • 34h 22m total
  • Ottawa to Washington
Search Deals
Air Canada
  • Air Canada
  • 24/1
  • 1 total stop
  • 9h 01m total
  • Ottawa to Washington
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 629,999 searches. Data last updated 12 December 2025.
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 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$ 331

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Sun 25/1

5:45 p.m.-2:20 p.m.

1 stop23h 35m

Seattle/Tacoma Intl

Sun 1/2

3:10 p.m.-4:53 p.m.

1 stop22h 43m

C$ 341

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Fri 9/1

6:00 a.m.-2:20 p.m.

1 stop11h 20m

Seattle/Tacoma Intl

Sun 11/1

3:10 p.m.-12:42 a.m.

2 stops30h 32m

C$ 361

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Sun 1/2

6:00 a.m.-2:19 p.m.

1 stop11h 19m

Seattle/Tacoma Intl

Wed 4/2

3:10 p.m.-4:53 p.m.

1 stop22h 43m

C$ 371

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 22/4

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

3 stops16h 00m

Seattle/Tacoma Intl

Fri 24/4

7:02 p.m.-9:11 a.m.

2 stops11h 09m

C$ 411

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Thu 12/2

7:45 a.m.-2:40 p.m.

1 stop9h 55m

Portland

Wed 18/2

7:00 p.m.-6:43 a.m.

1 stop8h 43m

C$ 643

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Thu 12/2

7:45 a.m.-2:40 p.m.

1 stop9h 55m

Portland

Tue 17/2

7:00 p.m.-6:43 a.m.

1 stop8h 43m

C$ 643

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Wed 18/2

7:45 a.m.-2:40 p.m.

1 stop9h 55m

Portland

Mon 23/2

7:05 p.m.-6:43 a.m.

1 stop8h 38m

C$ 643

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Wed 18/2

6:20 a.m.-6:49 p.m.

1 stop15h 29m

Portland

Mon 23/2

7:57 p.m.-10:26 a.m.

2 stops11h 29m

C$ 650

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Mon 19/1

7:27 p.m.-12:41 p.m.

2 stops20h 14m

Portland

Wed 21/1

10:47 a.m.-9:18 p.m.

1 stop7h 31m

C$ 650

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 19 results
1
2

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 C$ 251). Flying from Ottawa to State of Washington in February is currently the most expensive (average of C$ 494). 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.

What is the cheapest time of day to fly from YOW to WA?

Find hourly flight availability from Ottawa to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 December 2025.

When flying from Ottawa to State of Washington, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 28% versus a flight in the morning.

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 12 December 2025.
Check out reviews from past customers who have flown with United Airlines,WestJet, andAir Canada from Ottawa to Washington to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,095 reviews
Check prices

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
United Airlines
7.4
Good
9,095 reviews
United Airlines
7.4
Good
9,095 reviews
Check prices

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
WestJet
7.2
Good
3,195 reviews
United Airlines
7.4
Good
9,095 reviews
Check prices

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
Air Canada
7.1
Good
10,516 reviews
United Airlines
7.4
Good
9,095 reviews
Check prices

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

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 10.6 km from the centre of Ottawa.

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

    A quick flight from Ottawa to State of Washington can take about 9h 55m. WestJet provides one of the quickest options available for as low as C$ 643. Airlines will cover a distance of 3605 km. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from Ottawa to State of Washington?

    While some choose either Ottawa - Portland or Ottawa - Everett Paine Field, Ottawa - Seattle/Tacoma Intl is the most popular route from Ottawa to State of Washington.

  • 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 C$ 251). Flying from Ottawa to State of Washington in February is currently the most expensive (average of C$ 494). 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 629,999 searches. Data last updated 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 362AverageC$ 530FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 406AverageC$ 592FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 417AverageC$ 534FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ottawa to Washington?

Deals for Ottawa to Washington flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Ottawa to Washington?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ottawa to Washington for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Ottawa to Washington with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ottawa to Washington, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Ottawa to Washington become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Washington from Ottawa today and book when prices fit your budget.

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