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Cheap flights from Ottawa to Washington from C$ 270

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 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SEA
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 30 October 2025.

Tue 9/125:40 a.m.YOW - SEA
2 stops11h 40mWestJet
Wed 10/123:10 p.m.SEA - YOW
2 stops30h 32mWestJet
Deal found 28/10C$ 440
Mon 8/125:45 p.m.YOW - SEA
1 stop23h 35mWestJet
Wed 10/123:10 p.m.SEA - YOW
1 stop22h 43mWestJet
Deal found 28/10C$ 451
Tue 9/125:40 a.m.YOW - SEA
2 stops35h 40mMultiple Airlines
Wed 10/1211:10 p.m.SEA - YOW
1 stop12h 34mMultiple Airlines
Deal found 28/10C$ 507
Fri 21/117:15 p.m.YOW - SEA
2 stops22h 25mWestJet
Fri 28/113:10 p.m.SEA - YOW
2 stops30h 32mWestJet
Deal found 30/10C$ 605
Fri 21/113:10 p.m.YOW - SEA
1 stop10h 34mUnited Airlines
Fri 28/1110:53 a.m.SEA - YOW
1 stop7h 25mUnited Airlines
Deal found 30/10C$ 641
Fri 21/116:00 a.m.YOW - SEA
2 stops11h 31mAir Canada
Fri 28/118:10 a.m.SEA - YOW
1 stop8h 08mAir Canada
Deal found 30/10C$ 645
Sat 13/125:14 p.m.YOW - SEA
1 stop8h 14mUnited Airlines
Sat 20/1211:59 p.m.SEA - YOW
2 stops18h 19mUnited Airlines
Deal found 29/10C$ 719
Tue 23/127:27 p.m.YOW - PDX
2 stops20h 53mUnited Airlines
Tue 30/1210:52 p.m.PDX - YOW
1 stop12h 35mUnited Airlines
Deal found 28/10C$ 747
Sat 13/126:45 a.m.YOW - PDX
2 stops17h 22mAmerican Airlines
Sat 20/123:02 p.m.PDX - YOW
2 stops22h 49mAmerican Airlines
Deal found 29/10C$ 834
Tue 23/126:15 a.m.YOW - PDX
1 stop15h 46mAir Canada
Tue 30/1211:55 p.m.PDX - YOW
1 stop14h 23mAir Canada
Deal found 28/10C$ 862
Sat 13/129:25 a.m.YOW - PDX
1 stop13h 35mMultiple Airlines
Sat 20/129:42 p.m.PDX - YOW
2 stops23h 59mMultiple Airlines
Deal found 29/10C$ 919
Sat 13/126:00 a.m.YOW - PDX
2 stops38h 43mWestJet
Fri 19/1212:32 a.m.PDX - YOW
2 stops21h 10mWestJet
Deal found 29/10C$ 1,257

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 30 October 2025.

Round-trip from

C$ 339

One-way from

C$ 270

Popular in

December

Cheapest in

September

Average price

C$ 535
Air Canada
  • Air Canada
  • 14/4-15/4
  • 2 total stops
  • 15h 01m total
  • Ottawa to Washington
Search Deals
WestJet
  • WestJet
  • 2/12
  • 1 total stop
  • 11h 20m total
  • Ottawa to Washington
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 80 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 30 October 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

Tue 14/4

5:50 p.m.-10:08 p.m.

1 stop7h 18m

Seattle/Tacoma Intl

Wed 15/4

8:00 p.m.-6:43 a.m.

1 stop7h 43m

C$ 339

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 9/12

5:40 a.m.-2:20 p.m.

2 stops11h 40m

Seattle/Tacoma Intl

Wed 10/12

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

2 stops30h 32m

C$ 440

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Mon 8/12

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

1 stop23h 35m

Seattle/Tacoma Intl

Wed 10/12

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

1 stop22h 43m

C$ 451

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 9/12

5:40 a.m.-2:20 p.m.

2 stops35h 40m

Seattle/Tacoma Intl

Wed 10/12

11:10 p.m.-2:44 p.m.

1 stop12h 34m

C$ 507

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Fri 21/11

7:15 p.m.-2:40 p.m.

2 stops22h 25m

Seattle/Tacoma Intl

Fri 28/11

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

2 stops30h 32m

C$ 605

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Fri 21/11

3:10 p.m.-10:44 p.m.

1 stop10h 34m

Seattle/Tacoma Intl

Fri 28/11

10:53 a.m.-9:18 p.m.

1 stop7h 25m

C$ 641

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Tue 3/3

5:45 a.m.-2:40 p.m.

2 stops11h 55m

Portland

Wed 4/3

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

1 stop8h 43m

C$ 693

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Sat 13/12

6:20 a.m.-4:07 p.m.

1 stop12h 47m

Seattle/Tacoma Intl

Sat 20/12

11:59 p.m.-9:18 p.m.

2 stops18h 19m

C$ 719

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Tue 23/12

7:27 p.m.-1:20 p.m.

2 stops20h 53m

Portland

Tue 30/12

10:52 p.m.-2:27 p.m.

1 stop12h 35m

C$ 747

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

Sat 13/12

6:45 a.m.-9:07 p.m.

2 stops17h 22m

Portland

Sat 20/12

3:02 p.m.-4:51 p.m.

2 stops22h 49m

C$ 834

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/10

Showing 1-10 of 19 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, November is the cheapest month in which you can book a flight from Ottawa to State of Washington (average of C$ 283). Flying from Ottawa to State of Washington in December is currently the most expensive (average of C$ 510). 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 30 October 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 30 October 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
8,998 reviews
Check prices

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
8,998 reviews
United Airlines
7.4
Good
8,998 reviews
Check prices

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
WestJet
7.2
Good
3,152 reviews
United Airlines
7.4
Good
8,998 reviews
Check prices

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Air Canada
7.1
Good
10,381 reviews
United Airlines
7.4
Good
8,998 reviews
Check prices

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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 7h 18m. Air Canada provides one of the quickest options available for as low as C$ 339. Airlines will cover a distance of 3529 km.

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

    While some choose either Ottawa - Everett Paine Field or Ottawa - Portland, 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, November is the cheapest month in which you can book a flight from Ottawa to State of Washington (average of C$ 283). Flying from Ottawa to State of Washington in December is currently the most expensive (average of C$ 510). 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 30 October 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 368AverageC$ 549FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 411AverageC$ 605FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 424AverageC$ 564FlexibilityNo 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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