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Cheap flights from Washington to Ottawa from C$ 171

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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YOW
17 Jun — 24 Jun1
1 adult

Cheap flight deals from Washington to Ottawa

Keep the following information in mind while searching for Washington to Ottawa flight deals. Data was last updated 12 June 2025.

Round-trip from

C$ 409

One-way from

C$ 171

Popular in

February

Cheapest in

September

Average price

C$ 664
Air Canada
  • Air Canada
  • 12/7-22/7
  • 2 total stops
  • 17h 40m total
  • Washington to Ottawa
Search Deals
WestJet
  • WestJet
  • 5/8
  • 1 total stop
  • 7h 56m total
  • Washington to Ottawa
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 101 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
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Find flight deals from Washington to Ottawa

Cheapest flights from Washington to Ottawa
Explore the most affordable flight options available from Washington to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.

Sat 12/77:40 p.m.PDX - YOW
1 stop9h 39mAir Canada
Tue 22/76:00 p.m.YOW - PDX
1 stop8h 01mAir Canada
Deal found 10/6C$ 409
Wed 13/81:45 p.m.PDX - YOW
2 stops12h 40mWestJet
Sun 17/85:15 p.m.YOW - PDX
2 stops22h 50mWestJet
Deal found 9/6C$ 420
Sat 12/711:20 p.m.PDX - YOW
1 stop16h 32mUnited Airlines
Mon 21/76:33 a.m.YOW - PDX
1 stop15h 12mUnited Airlines
Deal found 12/6C$ 429
Thu 11/91:50 p.m.SEA - YOW
2 stops12h 33mWestJet
Mon 15/93:35 p.m.YOW - SEA
1 stop7h 54mWestJet
Deal found 12/6C$ 435
Sun 27/77:35 p.m.SEA - YOW
1 stop8h 10mMultiple Airlines
Sun 3/85:15 a.m.YOW - SEA
1 stop8h 45mMultiple Airlines
Deal found 12/6C$ 488
Sun 27/75:30 a.m.SEA - YOW
2 stops11h 26mAir Canada
Sun 3/85:15 a.m.YOW - SEA
1 stop8h 45mAir Canada
Deal found 12/6C$ 496
Fri 18/711:59 p.m.PDX - YOW
2 stops14h 06mMultiple Airlines
Sat 26/78:45 p.m.YOW - PDX
2 stops15h 45mMultiple Airlines
Deal found 11/6C$ 578
Wed 2/712:20 a.m.SEA - YOW
1 stop13h 46mUnited Airlines
Fri 11/710:37 a.m.YOW - SEA
1 stop11h 21mUnited Airlines
Deal found 11/6C$ 726

Cheapflights Fare Finder

Customize your flight search to find flights from 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, Cheapflights users made 629,999 searches. Data last updated 12 June 2025.
Use the filters below to find and compare flights from Washington to Ottawa that are best for you.

Fly from

Washington

Fly to

Ottawa

Route

Depart

Return

Price

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Sat 12/7

7:40 p.m.-8:19 a.m.

1 stop9h 39m

Ottawa

Tue 22/7

6:00 p.m.-11:01 p.m.

1 stop8h 01m

C$ 409

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Wed 13/8

1:45 p.m.-5:25 a.m.

2 stops12h 40m

Ottawa

Sun 17/8

5:15 p.m.-1:05 p.m.

2 stops22h 50m

C$ 420

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Sat 12/7

11:20 p.m.-6:52 p.m.

1 stop16h 32m

Ottawa

Mon 21/7

6:33 a.m.-6:45 p.m.

1 stop15h 12m

C$ 429

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 11/9

1:50 p.m.-5:23 a.m.

2 stops12h 33m

Ottawa

Mon 15/9

3:35 p.m.-8:29 p.m.

1 stop7h 54m

C$ 435

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sun 27/7

7:35 p.m.-6:45 a.m.

1 stop8h 10m

Ottawa

Sun 3/8

5:15 a.m.-11:00 a.m.

1 stop8h 45m

C$ 488

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sun 27/7

5:30 a.m.-7:56 p.m.

2 stops11h 26m

Ottawa

Sun 3/8

5:15 a.m.-11:00 a.m.

1 stop8h 45m

C$ 496

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Fri 18/7

11:59 p.m.-5:05 p.m.

2 stops14h 06m

Ottawa

Sat 26/7

8:45 p.m.-9:30 a.m.

2 stops15h 45m

C$ 578

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 2/7

12:20 a.m.-9:35 p.m.

1 stop18h 15m

Ottawa

Sun 13/7

9:50 a.m.-12:56 a.m.

1 stop18h 06m

C$ 726

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Tue 5/8

1:45 p.m.-12:41 a.m.

1 stop7h 56m

C$ 171

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Mon 4/8

11:20 p.m.-2:13 p.m.

1 stop11h 53m

C$ 178

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/6

Showing 1-10 of 17 results
1
2

Best time to book a flight from Washington to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from Washington 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 Washington to Ottawa

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

Currently, October is the cheapest month in which you can book a flight from State of Washington to Ottawa (average of C$ 224). Flying from State of Washington to Ottawa in December is currently the most expensive (average of C$ 326). 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 WA to YOW?

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

When flying from State of Washington to Ottawa, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Ottawa by month

Plan your trip to Ottawa by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ottawa ranges from 50.0 - 93.0 mm per month. June is typically the wettest month, when rainfall can reach 93.0 mm. February is typically the driest time to visit Ottawa when rainfall is around 50.0 mm.

Temperature in Ottawa by month

Plan your trip to Ottawa by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ottawa, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -10.0 C).

Reviews of airlines servicing Ottawa

Get insights into the airlines that provide service to Ottawa. 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 Ottawa. Reviews last updated 12 June 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines and WestJet from Washington to Ottawa to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews
Check prices

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
WestJet
7.2
Good
2,868 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,531 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Washington to Ottawa. 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 into for flights to Ottawa from Washington?

    Ottawa (YOW) is the airport you will fly into if you book a flight from Washington to Ottawa. It is only a 10.6 km journey from Ottawa (YOW) to Ottawa’s city centre.

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

    C$ 171 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on United Airlines and Air Canada, with prices starting from C$ 178 and C$ 228, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington to Ottawa 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 State of Washington to Ottawa?

    Currently, October is the cheapest month in which you can book a flight from State of Washington to Ottawa (average of C$ 224). Flying from State of Washington to Ottawa in December is currently the most expensive (average of C$ 326). 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

Travelling to a place near Washington?

Book flights to Washington if you plan to visit one of these locations
Gatineau
Brockville
Perth
Smiths Falls
Prescott
Pembroke
Wakefield
Lanark

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Yes, Cheapflights offers price alerts on Washington to Ottawa flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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