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Cheap flights from Ottawa to Washington from C$ 276

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 13/9. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SEA
5 Aug — 12 Aug1
1 adult

Cheap flight deals from Ottawa to Washington

Keep the following information in mind while searching for Ottawa to Washington flight deals. Data was last updated 31 July 2025.

Round-trip from

C$ 399

One-way from

C$ 276

Popular in

December

Cheapest in

August

Average price

C$ 599
Air Canada
  • Air Canada
  • 26/8-2/9
  • 2 total stops
  • 15h 22m total
  • Ottawa to Washington
Search Deals
Air Canada
  • Air Canada
  • 13/9
  • 2 total stops
  • 10h 36m total
  • Ottawa to Washington
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 76 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find 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 31 July 2025.

Tue 26/89:25 a.m.YOW - PDX
1 stop8h 25mAir Canada
Tue 2/96:15 a.m.PDX - YOW
1 stop6h 57mAir Canada
Deal found 29/7C$ 399
Wed 17/93:45 p.m.YOW - SEA
1 stop7h 44mWestJet
Thu 23/101:50 p.m.SEA - YOW
1 stop7h 50mWestJet
Deal found 30/7C$ 407
Wed 20/86:33 a.m.YOW - PDX
1 stop8h 16mUnited Airlines
Tue 26/84:06 p.m.PDX - YOW
2 stops14h 05mUnited Airlines
Deal found 30/7C$ 432
Wed 20/812:20 p.m.YOW - SEA
2 stops11h 08mMultiple Airlines
Sun 7/91:15 p.m.SEA - YOW
1 stop20h 48mMultiple Airlines
Deal found 29/7C$ 491
Tue 26/85:15 a.m.YOW - PDX
2 stops12h 51mMultiple Airlines
Tue 2/96:15 a.m.PDX - YOW
1 stop6h 57mMultiple Airlines
Deal found 29/7C$ 502
Sat 13/96:00 a.m.YOW - PDX
1 stop10h 05mWestJet
Sat 20/91:45 p.m.PDX - YOW
1 stop22h 11mWestJet
Deal found 30/7C$ 508
Tue 19/82:25 p.m.YOW - SEA
1 stop9h 20mAir Canada
Thu 4/97:15 p.m.SEA - YOW
2 stops12h 09mAir Canada
Deal found 29/7C$ 570

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 31 July 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

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Tue 26/8

9:25 a.m.-2:50 p.m.

1 stop8h 25m

Portland

Tue 2/9

6:15 a.m.-4:12 p.m.

1 stop6h 57m

C$ 399

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 17/9

3:45 p.m.-8:29 p.m.

1 stop7h 44m

Seattle/Tacoma Intl

Thu 23/10

1:50 p.m.-12:40 a.m.

1 stop7h 50m

C$ 407

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Wed 20/8

6:33 a.m.-11:49 a.m.

1 stop8h 16m

Portland

Tue 26/8

4:06 p.m.-9:11 a.m.

2 stops14h 05m

C$ 432

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 20/8

12:20 p.m.-8:28 p.m.

2 stops11h 08m

Seattle/Tacoma Intl

Sun 7/9

1:15 p.m.-1:03 p.m.

1 stop20h 48m

C$ 491

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Tue 26/8

5:15 a.m.-3:06 p.m.

2 stops12h 51m

Portland

Tue 2/9

6:15 a.m.-4:12 p.m.

1 stop6h 57m

C$ 502

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Sat 13/9

6:00 a.m.-1:05 p.m.

1 stop10h 05m

Portland

Sat 20/9

1:45 p.m.-2:56 p.m.

1 stop22h 11m

C$ 508

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 19/8

2:25 p.m.-8:45 p.m.

1 stop9h 20m

Seattle/Tacoma Intl

Thu 4/9

7:15 p.m.-10:24 a.m.

2 stops12h 09m

C$ 570

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Sat 13/9

2:40 p.m.-10:16 p.m.

2 stops10h 36m

C$ 276

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Thu 11/9

3:45 p.m.-11:11 a.m.

2 stops22h 26m

C$ 313

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Sat 13/9

5:05 p.m.-12:33 p.m.

2 stops22h 28m

C$ 314

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/7

Showing 1-10 of 15 results
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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$ 262). Flying from Ottawa to State of Washington in December is currently the most expensive (average of C$ 353). 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 31 July 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ottawa to State of Washington as you normally would.

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 31 July 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
8,902 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,902 reviews
United Airlines
7.4
Good
8,902 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
WestJet
7.2
Good
2,977 reviews
United Airlines
7.4
Good
8,902 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Air Canada
7.1
Good
9,842 reviews
United Airlines
7.4
Good
8,902 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

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.

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

    For one-way options, check prices for Air Canada. According to our data, you can fly for as low as C$ 276. Users have also found prices from C$ 463 and C$ 510 on WestJet and United Airlines, respectively.

  • 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$ 262). Flying from Ottawa to State of Washington in December is currently the most expensive (average of C$ 353). 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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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 31 July 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 346AverageC$ 544FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 406AverageC$ 779FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 474AverageC$ 589FlexibilityNo 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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