How long is the flight from Ottawa to Washington, D.C.?

Air Canada and United Airlines can get you from Ottawa to Washington, D.C. in just under 1h 34m. Your travel time can differ by up to 14h 57m. There are 452 mi between Ottawa and Washington, D.C.. This flight may include one or multiple stops.

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

Air Canada, at $284, was found to be the cheapest airline from Ottawa to Washington, D.C.. An alternate airline flying to your destination would be United Airlines. These flights start at 31% lower than the current average price 3 months from now.

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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

While some choose either Ottawa - Washington, D.C. Reagan-National or Ottawa - Baltimore/Washington, Ottawa - Washington, D.C. Dulles Intl is the most popular route from Ottawa to Washington, D.C..

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

While on average a flight from Ottawa to Washington, D.C. is generally $1,462, our data shows the cheapest flight currently is $217. When looking at the most popular route, (Ottawa - Washington, D.C. Dulles Intl), you can expect to pay $315 for that flight.

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

Consider Avianca (88%), Republic Airways (87%) or Air Canada (78%) when booking your flight. These represent the most reliable airlines when flying from Ottawa to Washington, D.C..

Most accurate provider : When it comes to deals on Ottawa-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ottawa-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ottawa-Washington, D.C. flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Ottawa-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ottawa-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from Ottawa to Washington, D.C.?

If you book a flight to Washington, D.C. from Ottawa, you will be flying from Ottawa, which is the city’s only airport. Ottawa (YOW) is located 6.6 mi from the center of Ottawa. There are 6 flights from Ottawa to Washington, D.C. per day from 2 different airlines.

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.

$166+ Cheap Flights from Ottawa to Washington, D.C.

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

Cheapest

Best

Last-minute

One-way

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 September 10, 2026.

Sun 11/810:30 am -

Nonstop1h 49m

Wed 11/1112:55 pm -

Nonstop1h 34m

Deal found 9/9

$278

Wed 9/3011:10 am -

1 stop3h 50m

Sun 10/115:20 pm -

1 stop4h 32m

Deal found 9/8

$292

Wed 12/210:05 am -

1 stop5h 40m

Thu 12/35:20 pm -

1 stop4h 32m

Deal found 9/9

$297

Tue 9/2210:40 am -

Nonstop1h 34m

Sun 9/2712:55 pm -

Nonstop1h 32m

Deal found 9/8

$301

Thu 10/110:25 am -

Nonstop1h 35m

Sun 10/412:50 pm -

Nonstop1h 32m

Deal found 9/8

$302

Tue 9/2210:40 am -

Nonstop1h 34m

Fri 9/2512:55 pm -

Nonstop1h 32m

Deal found 9/8

$303

Sun 9/2710:40 am -

Nonstop1h 34m

Sun 10/412:50 pm -

Nonstop1h 32m

Deal found 9/8

$304

Wed 9/302:35 pm -

1 stop4h 25m

Wed 10/75:20 pm -

1 stop4h 32m

Deal found 9/9

$305

Sat 10/2411:15 am -

1 stop3h 42m

Sat 10/315:20 pm -

1 stop4h 32m

Deal found 9/9

$306

Sat 10/245:50 pm -

1 stop4h 00m

Sat 10/3112:55 pm -

Nonstop1h 34m

Deal found 9/9

$306

Fri 10/912:15 pm -

1 stop4h 27m

Mon 10/125:20 pm -

1 stop4h 32m

Deal found 9/9

$307

Thu 10/110:40 am -

1 stop4h 30m

Sun 10/43:50 pm -

1 stop5h 52m

Deal found 9/6

$308

Best flights from Ottawa to Washington, D.C.
Discover carefully curated flight deals from Ottawa to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.

Sun 10/1110:35 am -

Nonstop1h 34m

Wed 10/1412:50 pm -

Nonstop1h 32m

Deal found 9/5

$303

Wed 12/22:48 pm -

1 stop16h 31m

Thu 12/35:37 pm -

Nonstop1h 50m

Deal found 9/6

$356

Fri 10/96:00 am -

Nonstop1h 43m

Mon 10/125:20 pm -

1 stop4h 32m

Deal found 9/6

$367

Mon 12/215:40 pm -

1 stop4h 19m

Sun 12/276:00 am -

1 stop3h 47m

Deal found 9/9

$370

Sat 10/102:52 pm -

Nonstop1h 43m

Tue 10/135:20 pm -

1 stop4h 32m

Deal found 9/8

$373

Wed 10/146:55 am -

2 stops9h 56m

Sun 10/186:10 am -

2 stops11h 25m

Deal found 9/9

$798

Fri 12/255:40 pm -

1 stop4h 19m

Mon 12/286:00 am -

1 stop5h 37m

Deal found 9/9

$370

Tue 12/12:00 pm -

Nonstop1h 53m

Thu 12/35:37 pm -

Nonstop1h 50m

Deal found 9/6

$424

Sat 10/107:30 pm -

Nonstop1h 44m

Sat 10/179:45 am -

1 stop4h 09m

Deal found 9/10

$390

Tue 12/225:45 am -

1 stop4h 44m

Sun 12/276:00 am -

1 stop5h 37m

Deal found 9/9

$370

Sat 11/212:00 pm -

Nonstop1h 53m

Tue 11/248:37 am -

1 stop4h 34m

Deal found 9/7

$424

Thu 1/149:45 am -

Nonstop2h 01m

Sun 1/175:15 pm -

1 stop4h 37m

Deal found 9/6

$391

Sat 11/2110:50 am -

1 stop4h 34m

Tue 11/2411:05 am -

1 stop4h 52m

Deal found 9/7

$377

Wed 10/217:30 pm -

Nonstop1h 44m

Wed 10/281:19 pm -

Nonstop1h 48m

Deal found 9/6

$424

Thu 10/86:00 am -

Nonstop1h 43m

Sat 10/179:45 am -

1 stop4h 09m

Deal found 9/10

$420

Wed 10/216:05 am -

1 stop4h 39m

Wed 10/288:30 am -

1 stop5h 39m

Deal found 9/6

$429

Sat 10/37:30 pm -

Nonstop1h 44m

Sat 10/1010:10 pm -

Nonstop1h 44m

Deal found 9/5

$418

Mon 10/198:15 pm -

2 stops20h 32m

Fri 10/301:56 pm -

1 stop9h 36m

Deal found 9/5

$430

Mon 10/125:20 pm -

1 stop15h 34m

Sun 10/189:30 am -

1 stop12h 05m

Deal found 9/7

$459

Mon 12/288:25 pm -

1 stop12h 33m

Fri 1/16:00 am -

1 stop5h 37m

Deal found 9/6

$428

Tue 9/226:05 am -

1 stop3h 41m

Fri 9/2512:55 pm -

Nonstop1h 32m

Deal found 9/8

$465

Sun 12/2012:10 pm -

1 stop10h 28m

Sat 1/26:00 am -

1 stop3h 47m

Deal found 9/9

$428

Wed 10/215:20 pm -

1 stop5h 39m

Wed 10/286:10 am -

1 stop7h 59m

Deal found 9/6

$672

Thu 10/85:20 pm -

1 stop5h 39m

Tue 10/1311:55 am -

1 stop5h 21m

Deal found 9/6

$672

Sat 12/264:42 pm -

1 stop8h 06m

Sun 1/39:52 am -

1 stop11h 31m

Deal found 9/8

$673

Sat 10/107:15 am -

1 stop7h 43m

Sat 10/176:09 am -

1 stop9h 06m

Deal found 9/10

$784

Wed 10/1410:37 am -

1 stop12h 22m

Sun 10/186:29 am -

1 stop15h 06m

Deal found 9/9

$675

Fri 10/25:20 pm -

1 stop5h 39m

Tue 10/69:09 am -

1 stop12h 26m

Deal found 9/5

$713

Last-minute flights from Ottawa to Washington, D.C.
Discover last-minute flight deals from Ottawa to Washington, D.C.. Data last updated September 10, 2026 and is based on user searches.

Tue 9/2210:40 am -

Nonstop1h 34m

Sun 9/2712:55 pm -

Nonstop1h 32m

Deal found 9/8

$301

Tue 9/2210:40 am -

Nonstop1h 34m

Fri 9/2512:55 pm -

Nonstop1h 32m

Deal found 9/8

$303

Sun 9/2710:40 am -

Nonstop1h 34m

Sun 10/412:50 pm -

Nonstop1h 32m

Deal found 9/8

$304

Wed 9/3011:10 am -

1 stop3h 50m

Sun 10/115:20 pm -

1 stop4h 32m

Deal found 9/8

$292

Wed 9/302:35 pm -

1 stop4h 25m

Wed 10/75:20 pm -

1 stop4h 32m

Deal found 9/9

$305

Thu 10/110:25 am -

Nonstop1h 35m

Mon 10/512:50 pm -

Nonstop1h 32m

Deal found 9/8

$278

Thu 10/110:40 am -

1 stop4h 30m

Sun 10/43:50 pm -

1 stop5h 52m

Deal found 9/6

$308

Fri 10/912:15 pm -

1 stop4h 27m

Mon 10/125:20 pm -

1 stop4h 32m

Deal found 9/9

$307

Sun 10/116:00 am -

1 stop4h 20m

Wed 10/146:00 am -

1 stop4h 18m

Deal found 9/5

$310

Sat 10/1711:15 am -

1 stop3h 45m

Sat 10/243:45 pm -

1 stop6h 25m

Deal found 9/8

$309

Sat 10/2411:15 am -

1 stop3h 42m

Sat 10/315:20 pm -

1 stop4h 32m

Deal found 9/9

$306

Sat 10/245:50 pm -

1 stop4h 00m

Sat 10/3112:55 pm -

Nonstop1h 34m

Deal found 9/9

$306

One-way flights from Ottawa to Washington, D.C.
Search for one-way flight options from Ottawa to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.

Sat 10/1010:35 am -

Nonstop1h 34m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$166

Sat 10/102:50 pm -

1 stop4h 10m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$174

Wed 12/210:30 am -

Nonstop1h 49m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/8

$177

Wed 12/210:05 am -

1 stop5h 40m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$179

Tue 9/2211:10 am -

1 stop3h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/8

$181

Fri 10/165:50 pm -

1 stop4h 00m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$181

Wed 10/1410:00 am -

1 stop5h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/6

$183

Wed 10/144:00 pm -

1 stop6h 34m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/6

$183

Sun 10/46:00 pm -

1 stop4h 34m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$186

Thu 10/110:40 am -

1 stop4h 30m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/7

$187

Thu 10/1510:40 am -

1 stop4h 30m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/10

$188

Mon 9/2812:15 pm -

1 stop4h 23m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/8

$189

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

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$278 (Air Canada)
One-way from	$166 (Air Canada)
Popular in	May
Cheapest in	December
Average price	$428
Good round-trip deal	$320 or less
Good one-way deal	$259 or less

Provider with most accurate pricing for Ottawa-Washington, D.C. (WAS) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Ottawa-Washington, D.C. (WAS) flights.

Search Deals

From Ottawa to Washington, D.C. (WAS)

Search Deals

One-way flight from Ottawa to Washington, D.C. (WAS)

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($43 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Price to beat on a round-trip flight from Ottawa to Washington, D.C. (WAS).

Search Deals

Price to beat on a one-way flight from Ottawa to Washington, D.C. (WAS).

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ottawa to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaWashington, D.C.

YOW Ottawa - IAD Washington, D.C. Dulles Intl

YOWIAD

Ottawa

Sat 10/10

2:50 pm-7:00 pm

1 stop4h 10m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$174

Quickest round-trip

OttawaWashington, D.C.

YOW Ottawa - DCA Washington, D.C. Reagan-National

YOWDCA

Ottawa

Sat 10/10

10:35 am-12:09 pm

Nonstop1h 34m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$178

OttawaWashington, D.C.

YOW Ottawa - IAD Washington, D.C. Dulles Intl

YOWIAD

Ottawa

Thu 10/1

10:40 am-3:10 pm

1 stop4h 30m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$187

OttawaWashington, D.C.

YOW Ottawa - DCA Washington, D.C. Reagan-National

YOWDCA

Ottawa

Wed 10/14

10:35 am-12:09 pm

Nonstop1h 34m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$191

OttawaWashington, D.C.

YOW Ottawa - DCA Washington, D.C. Reagan-National

YOWDCA

Ottawa

Thu 10/15

5:50 pm-9:50 pm

1 stop4h 00m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$192

OttawaWashington, D.C.

YOW Ottawa - DCA Washington, D.C. Reagan-National

YOWDCA

Ottawa

Wed 12/2

10:30 am-12:19 pm

Nonstop1h 49m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$194

OttawaWashington, D.C.

YOW Ottawa - IAD Washington, D.C. Dulles Intl

YOWIAD

Ottawa

Wed 12/2

2:00 pm-3:53 pm

Nonstop1h 53m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$211

OttawaWashington, D.C.

YOW Ottawa - IAD Washington, D.C. Dulles Intl

YOWIAD

Ottawa

Fri 10/16

6:00 am-7:43 am

Nonstop1h 43m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$211

OttawaWashington, D.C.

YOW Ottawa - DCA Washington, D.C. Reagan-National

YOWDCA

Ottawa

Thu 10/1

10:25 am-12:00 pm

Nonstop1h 35m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$212

OttawaWashington, D.C.

YOW Ottawa - IAD Washington, D.C. Dulles Intl

YOWIAD

Ottawa

Wed 10/14

6:55 am-2:57 pm

2 stops8h 02m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$218

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 57 resultsSorted by cheapest first

...

Most accurate provider: When it comes to deals on Ottawa-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ottawa-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ottawa-Washington, D.C. flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Ottawa-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ottawa-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

YOW-WAS

YOW-DCA

YOW-IAD

YOW-BWI

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.

YOW-WAS

YOW-DCA

YOW-IAD

YOW-BWI

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

Currently, January is the cheapest month in which you can book a flight from Ottawa to Washington, D.C. (average of $332). Flying from Ottawa to Washington, D.C. in August is currently the most expensive (average of $449). 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?

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

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

The most flights from YOW to WAS are scheduled on a Wednesday (8 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 on average).

How much does it cost to fly round-trip from Ottawa to Washington, D.C.?

Airfare is below average for this route at the moment.

Ottawa to Washington, D.C. flights typically cost between $334 and $827 in November.
The cheapest round-trip price found within the last 5 days was $278 on Air Canada (Nov 8-Nov 11).

Reviews of airlines servicing Washington, D.C.

See what other customers who have flown with United Airlines and Air Canada from Ottawa to Washington, D.C. have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

10,194 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

United Airlines

7.4

Good

10,194 reviews

United Airlines

7.4

Good

10,194 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Air Canada

7.1

Good

11,608 reviews

United Airlines

7.4

Good

10,194 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

What airport do you fly from for flights from Ottawa to Washington, D.C.?
If you book a flight to Washington, D.C. from Ottawa, you will be flying from Ottawa, which is the city’s only airport. Ottawa (YOW) is located 6.6 mi from the center of Ottawa. There are 6 flights from Ottawa to Washington, D.C. per day from 2 different airlines.
How long is the flight from Ottawa to Washington, D.C.?
Air Canada and United Airlines can get you from Ottawa to Washington, D.C. in just under 1h 34m. Your travel time can differ by up to 14h 57m. There are 452 mi between Ottawa and Washington, D.C.. This flight may include one or multiple stops.
What are the cheapest airlines flying from Ottawa to Washington, D.C. round-trip?
Air Canada, at $284, was found to be the cheapest airline from Ottawa to Washington, D.C.. An alternate airline flying to your destination would be United Airlines. These flights start at 31% lower than the current average price 3 months from now.
What are the most popular routes from Ottawa to Washington, D.C.?
While some choose either Ottawa - Washington, D.C. Reagan-National or Ottawa - Baltimore/Washington, Ottawa - Washington, D.C. Dulles Intl is the most popular route from Ottawa to Washington, D.C..
What are the most reliable airlines from Ottawa to Washington, D.C.?
Consider Avianca (88%), Republic Airways (87%) or Air Canada (78%) when booking your flight. These represent the most reliable airlines when flying from Ottawa to Washington, D.C..
What are the cheapest flights from Ottawa to Washington, D.C.?
While on average a flight from Ottawa to Washington, D.C. is generally $1,462, our data shows the cheapest flight currently is $217. When looking at the most popular route, (Ottawa - Washington, D.C. Dulles Intl), you can expect to pay $315 for that flight.
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, January is the cheapest month in which you can book a flight from Ottawa to Washington, D.C. (average of $332). Flying from Ottawa to Washington, D.C. in August is currently the most expensive (average of $449). 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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Clinton

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Largo

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Washington, D.C. flight routes

Alternative routes for Ottawa to Washington, D.C.

Pearson Intl to Reagan-National flights

Pearson Intl to Dulles Intl flights

Ottawa to Reagan-National flights

London to Dulles Intl flights

Top 2 airlines flying from Ottawa to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$284	Average$401	FlexibilityNo cancel fee	On-time67%
United Airlines	Cheapest$344	Average$471	FlexibilityNo cancel fee	On-time69%

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$166+ Cheap flights from Ottawa (YOW) to Washington, D.C. (WAS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/10. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap 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 September 10, 2026.

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 September 10, 2026.

Best flights from Ottawa to Washington, D.C.Discover carefully curated flight deals from Ottawa to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.

Discover carefully curated flight deals from Ottawa to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.

Last-minute flights from Ottawa to Washington, D.C.Discover last-minute flight deals from Ottawa to Washington, D.C.. Data last updated September 10, 2026 and is based on user searches.

Discover last-minute flight deals from Ottawa to Washington, D.C.. Data last updated September 10, 2026 and is based on user searches.

One-way flights from Ottawa to Washington, D.C.Search for one-way flight options from Ottawa to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.

Search for one-way flight options from Ottawa to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.

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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.

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

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 September 10, 2026.

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

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

The most flights from YOW to WAS are scheduled on a Wednesday (8 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 on average).

How much does it cost to fly round-trip from Ottawa to Washington, D.C.?

Airfare is below average for this route at the moment.

Ottawa to Washington, D.C. flights typically cost between $334 and $827 in November.The cheapest round-trip price found within the last 5 days was $278 on Air Canada (Nov 8-Nov 11).

Reviews of airlines servicing Washington, D.C.

See what other customers who have flown with United Airlines and Air Canada from Ottawa to Washington, D.C. have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

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

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

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

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

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

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

Traveling to a place near Washington, D.C.?

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Alternative routes for Ottawa to Washington, D.C.

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Complete your trip

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Ottawa and Washington, D.C. flights

Browse other Ottawa and Washington, D.C. flight options. Last updated on September 10, 2026.

Other flights from Ottawa

Browse through other flights departing from Ottawa. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.

Popular flight searches

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Ottawa to Washington, D.C. flights

Consider these flights traveling from Ottawa to Washington, D.C..

Other flights to Washington, D.C.

Explore flights to Washington, D.C. departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.

Top 2 airlines flying from Ottawa to Washington, D.C.

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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 September 10, 2026.

Best flights from Ottawa to Washington, D.C.
Discover carefully curated flight deals from Ottawa to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.

Last-minute flights from Ottawa to Washington, D.C.
Discover last-minute flight deals from Ottawa to Washington, D.C.. Data last updated September 10, 2026 and is based on user searches.

One-way flights from Ottawa to Washington, D.C.
Search for one-way flight options from Ottawa to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.

Ottawa to Washington, D.C. flights typically cost between $334 and $827 in November.
The cheapest round-trip price found within the last 5 days was $278 on Air Canada (Nov 8-Nov 11).