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Cheap flights from Ottawa to Washington, D.C. from C$ 192

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 26/9. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — WAS
23 Jun — 30 Jun1
1 adult

Cheapflights Tip: The best prices from Ottawa to Washington, D.C. are usually found in March or April, booked 58 days in advance, depart on a Friday or Tuesday and return on a Tuesday

Cheap flight deals from Ottawa to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 June 2025.

Round-trip from

C$ 403

One-way from

C$ 192

Popular in

October

Cheapest in

March

Average price

C$ 491

Good round-trip deal

C$ 606 or less

Good one-way deal

C$ 414 or less
Air Canada
  • Air Canada
  • 11/7-14/7
  • 2 total stops
  • 8h 01m total
  • Ottawa to Washington, D.C.
Porter Airlines
  • Porter Airlines
  • 26/9
  • 1 total stop
  • 3h 16m total
  • Ottawa to Washington, D.C.
Highest demand for flights based on searches. 11% potential increase in price (C$ 87 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease (C$ 15 potential savings vs. average RT price).
Average for round-trip flights in June 2025
Price to beat on a round-trip flight from Ottawa to Washington, D.C. (WAS).
Price to beat on a one-way flight from Ottawa to Washington, D.C. (WAS).

Find flight deals from Ottawa to Washington, D.C.

Cheapest flights from Ottawa to Washington, D.C.
Explore the most affordable flight options available from Ottawa to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 June 2025.

Thu 10/79:50 a.m.YOW - IAD
Nonstop1h 39mUnited Airlines
Mon 14/75:25 p.m.IAD - YOW
1 stop4h 40mUnited Airlines
Deal found 18/6C$ 401
Fri 11/75:15 a.m.YOW - DCA
1 stop3h 42mAir Canada
Mon 14/76:00 a.m.DCA - YOW
1 stop4h 19mAir Canada
Deal found 17/6C$ 403
Fri 1/88:35 a.m.YOW - IAD
1 stop6h 21mPorter Airlines
Fri 8/811:35 a.m.IAD - YOW
1 stop4h 58mPorter Airlines
Deal found 16/6C$ 411
Thu 10/79:50 a.m.YOW - IAD
Nonstop1h 39mMultiple Airlines
Sun 13/74:10 p.m.IAD - YOW
1 stop3h 28mMultiple Airlines
Deal found 17/6C$ 434
Fri 25/74:25 p.m.YOW - BWI
1 stop7h 24mMultiple Airlines
Mon 28/77:10 a.m.BWI - YOW
1 stop9h 48mMultiple Airlines
Deal found 16/6C$ 445
Tue 21/107:29 p.m.YOW - IAD
Nonstop1h 43mAir Canada
Sat 25/109:35 a.m.IAD - YOW
1 stop4h 16mAir Canada
Deal found 17/6C$ 461
Fri 19/96:00 a.m.YOW - IAD
1 stop11h 50mWestJet
Mon 22/96:45 p.m.IAD - YOW
2 stops21h 34mWestJet
Deal found 18/6C$ 532
Fri 27/66:05 a.m.YOW - DCA
1 stop4h 22mUnited Airlines
Tue 1/72:00 p.m.DCA - YOW
1 stop7h 35mUnited Airlines
Deal found 18/6C$ 578
Sat 2/85:55 a.m.YOW - DCA
1 stop12h 07mMultiple Airlines
Sat 9/86:00 a.m.DCA - YOW
2 stops18h 22mMultiple Airlines
Deal found 18/6C$ 634
Sat 30/86:33 a.m.YOW - BWI
1 stop7h 15mUnited Airlines
Wed 3/96:15 a.m.BWI - YOW
1 stop15h 20mUnited Airlines
Deal found 16/6C$ 755
Tue 21/107:15 p.m.YOW - BWI
2 stops23h 32mWestJet
Sat 25/101:00 p.m.BWI - YOW
2 stops26h 03mWestJet
Deal found 17/6C$ 815
Wed 16/712:20 p.m.YOW - DCA
2 stops28h 54mWestJet
Wed 23/71:41 p.m.DCA - YOW
2 stops10h 41mWestJet
Deal found 18/6C$ 878

Cheapflights Fare Finder

Customize your flight search to find flights from Ottawa to Washington, D.C. 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 18 June 2025.
Use the filters below to find and compare flights from Ottawa to Washington, D.C. that are best for you.

Fly from

Ottawa

Fly to

Washington, D.C.

Route

Depart

Return

Price

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 10/7

9:50 a.m.-11:29 a.m.

Nonstop1h 39m

Washington, D.C. Dulles Intl

Mon 14/7

5:25 p.m.-10:05 p.m.

1 stop4h 40m

C$ 401

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Fri 11/7

5:15 a.m.-8:57 a.m.

1 stop3h 42m

Washington, D.C. Reagan-National

Mon 14/7

6:00 a.m.-10:19 a.m.

1 stop4h 19m

C$ 403

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 1/8

8:35 a.m.-2:56 p.m.

1 stop6h 21m

Washington, D.C. Dulles Intl

Fri 8/8

11:35 a.m.-4:33 p.m.

1 stop4h 58m

C$ 411

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 10/7

9:50 a.m.-11:29 a.m.

Nonstop1h 39m

Washington, D.C. Dulles Intl

Sun 13/7

4:10 p.m.-7:38 p.m.

1 stop3h 28m

C$ 434

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Tue 21/10

7:29 p.m.-9:12 p.m.

Nonstop1h 43m

Washington, D.C. Dulles Intl

Sat 25/10

9:35 a.m.-1:51 p.m.

1 stop4h 16m

C$ 461

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Tue 15/7

7:00 a.m.-5:32 p.m.

2 stops10h 32m

Baltimore/Washington

Tue 22/7

5:45 a.m.-5:06 p.m.

1 stop11h 21m

C$ 472

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Mon 30/6

6:33 a.m.-2:13 p.m.

1 stop7h 40m

Washington, D.C. Reagan-National

Tue 1/7

7:25 a.m.-5:06 p.m.

1 stop9h 41m

C$ 524

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 19/9

6:00 a.m.-5:50 p.m.

1 stop11h 50m

Washington, D.C. Dulles Intl

Mon 22/9

6:45 p.m.-4:19 p.m.

2 stops21h 34m

C$ 532

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Sat 2/8

5:55 a.m.-6:02 p.m.

1 stop12h 07m

Washington, D.C. Reagan-National

Sat 9/8

6:00 a.m.-12:22 a.m.

2 stops18h 22m

C$ 634

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Sat 30/8

6:33 a.m.-1:48 p.m.

1 stop7h 15m

Baltimore/Washington

Wed 3/9

6:15 a.m.-9:35 p.m.

1 stop15h 20m

C$ 755

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/6

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

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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, D.C.

How far ahead should I book a flight from Ottawa to Washington, D.C.?

Use this chart to determine the optimal time to book a round-trip flight from Ottawa to Washington, D.C.. Price data was last updated on 13 June 2025.

To ensure you get the cheapest price possible for a flight from Ottawa to Washington, D.C., you should look to book at least 58 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Ottawa to Washington, D.C.?

Currently, February is the cheapest month in which you can book a flight from Ottawa to Washington, D.C. (average of C$ 256). Flying from Ottawa to Washington, D.C. in October is currently the most expensive (average of C$ 352). 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 WAS?

Find hourly flight availability from Ottawa to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 June 2025.

It’s typically best to fly out from Ottawa to Washington, D.C. in the afternoon. Doing so could potentially save you 60% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Ottawa to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from Ottawa to Washington, D.C.. Price data was last updated on 16 December 2024.

Travelers seeking maximum savings on their Ottawa to Washington, D.C. flight should consider departing on Saturday afternoons when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Ottawa to Washington, D.C.

Explore weekly flight availability from Ottawa to Washington, D.C.. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 18 June 2025.

The most flights from YOW to WAS are scheduled on a Monday (8 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (8 on average).

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. ranges from 66.0 - 102.0 mm per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. when rainfall is around 66.0 mm.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C., 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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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, D.C.. Reviews last updated 18 June 2025.
See what other customers who have flown with Porter Airlines, Delta and United Airlines from Ottawa to Washington, D.C. have to say. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

7.6

Crew

8.7

Entertainment

7.0

Comfort

8.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!

Food

7.6

Crew

8.7

Entertainment

7.0

Comfort

8.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!
8.0
Very good

Food

7.6

Crew

8.7

Entertainment

7.0

Comfort

8.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!

Food

7.6

Crew

8.7

Entertainment

7.0

Comfort

8.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!

Food

7.6

Crew

8.7

Entertainment

7.0

Comfort

8.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!

Food

7.6

Crew

8.7

Entertainment

7.0

Comfort

8.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!

Related info for your journey

Find useful and relevant information for your journey from Ottawa to Washington, D.C.. 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, D.C.?

    For a flight from Ottawa to Washington, D.C., you will be flying from Ottawa. Ottawa (YOW) is just 10.6 km from the centre of the city. Ottawa is the only Ottawa airport and it handles 8 outbound flights to Washington, D.C. per day. 3 airlines have flights to Washington, D.C. from Ottawa on a regular basis.

  • What are the cheapest airlines flying from Ottawa to Washington, D.C. round-trip?

    Flying on Air Canada is currently your cheapest option to Washington, D.C., with prices starting at C$ 403. Additional round-trip tickets that might be worth considering are offered by United Airlines and Porter Airlines, with the lowest prices starting at C$ 407 and C$ 408, respectively. These flights start at 15% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Ottawa to Washington, D.C. one-way?

    C$ 192 is the cheapest one-way deal found within the past few days, from Porter Airlines. You may also be able to find cheap deals on Air Canada and United Airlines, with prices starting from C$ 208 and C$ 223, respectively.

  • What are the most popular routes from Ottawa to Washington, D.C.?

  • What are the most reliable airlines from Ottawa to Washington, D.C.?

    The top 3 most reliable airlines when flying from Ottawa to Washington, D.C. are GoJet (82%), Air Canada (82%) and United Airlines (82%).

  • What are the cheapest flights from Ottawa to Washington, D.C.?

    The cheapest flight price from Ottawa to Washington, D.C. is C$ 254. On average you can expect to pay C$ 1,480. The most popular route, (Ottawa - Washington, D.C. Dulles Intl), can usually be booked for C$ 324.

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

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

  • How can I find direct flights from Ottawa to Washington, D.C.?

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

  • Can I find deals for business class flights from Ottawa to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Ottawa to Washington, D.C. 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 Washington, D.C.?

    Currently, February is the cheapest month in which you can book a flight from Ottawa to Washington, D.C. (average of C$ 256). Flying from Ottawa to Washington, D.C. in October is currently the most expensive (average of C$ 352). 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 Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Herndon
Arlington
Hanover
Reston
Fairfax
Gaithersburg
Ellicott City
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Alexandria
Manassas
Fredericksburg
Rockville

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Top 3 airlines flying from Ottawa to Washington, D.C.

Discover the top 3 airlines that operate flights from Ottawa to Washington, D.C.. 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 18 June 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 203AverageC$ 753FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 315AverageC$ 535FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 327AverageC$ 396FlexibilityNo cancel feeOn-time52%
Search Porter 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, D.C.?

Deals for Ottawa to Washington, D.C. 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, D.C.?

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

Can Cheapflights find flights from Ottawa to Washington, D.C. with no change fees?

Yes, we can. To see specific flights from Ottawa to Washington, D.C. with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Ottawa to Washington, D.C. become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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