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

Air Canada, at $250, was found to be the cheapest airline from Ottawa to Washington, D.C..Alternate airlines to your destination round-trip include Porter Airlines and United Airlines. These flights start at 30% 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?

The cheapest airlines for a one-way flight from Ottawa to Washington, D.C. are Porter Airlines ($124), Air Canada ($152), and United Airlines ($197).

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

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

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 $469, our data shows the cheapest flight currently is $164. When looking at the most popular route, (Ottawa - Washington, D.C. Dulles Intl), you can expect to pay $267 for that flight.

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

Consider Avianca (77%), GoJet (73%) or Air Canada (73%) when booking your flight. These represent the most reliable airlines when flying from Ottawa to Washington, D.C..

What are the most popular airlines that fly from Ottawa to Washington, D.C.?

The most popular airlines flying from Ottawa to Washington, D.C. are Air Canada, Porter Airlines and United Airlines. Something to consider prior to booking your flight.

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

Flying to your destination on a Monday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Washington, D.C.. Check prices with Cheapflights to find a great deal for your trip.

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

To save on the cost of your flight from Ottawa to Washington, D.C., book at least 59 days before your planned departure. Booking around this time can save you about 279% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $422 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $636.

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

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, January can be a great choice for travel to Washington, D.C.. Flights to Washington, D.C. from Ottawa in January are about $359 on average during January, but can be found for as low as $237.

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 5 flights from Ottawa to Washington, D.C. per day from 3 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.

$124+ Flights from Ottawa to Washington, D.C.

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Find cheap flights from Ottawa to Washington, D.C. with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Ottawa to Washington, D.C. are usually found in January or November, booked 58 days in advance, depart on a Sunday or Thursday and return on a Thursday

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

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$250 (Air Canada)
One-way from	$124 (Trip.com)
Popular in	June
Cheapest in	January
Average price	$342
Good round-trip deal	$284 or less
Good one-way deal	$189 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. 4% potential increase in price ($17 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

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

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

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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 March 25, 2025.

Tue 4/155:45 amYOW - DCA

1 stop4h 34mAir Canada

Tue 4/156:40 pmDCA - YOW

1 stop5h 04mAir Canada

Deal found 3/22

$250

Sun 4/138:35 amYOW - IAD

1 stop4h 04mPorter Airlines

Mon 4/141:45 pmIAD - YOW

1 stop3h 24mPorter Airlines

Deal found 3/22

$251

Sun 4/139:50 amYOW - IAD

Nonstop1h 43mAir Canada

Wed 4/168:17 amIAD - YOW

Nonstop1h 41mAir Canada

Deal found 3/22

$255

Fri 4/187:29 pmYOW - IAD

Nonstop1h 46mUnited Airlines

Mon 4/218:17 amIAD - YOW

Nonstop1h 41mUnited Airlines

Deal found 3/23

$340

Wed 3/269:25 amYOW - BWI

2 stops14h 47mMultiple Airlines

Thu 4/38:15 amBWI - YOW

1 stop8h 57mMultiple Airlines

Deal found 3/24

$343

Fri 4/1810:25 amYOW - DCA

Nonstop1h 36mUnited Airlines

Mon 4/2112:55 pmDCA - YOW

Nonstop1h 32mUnited Airlines

Deal found 3/23

$372

Fri 4/185:50 pmYOW - DCA

1 stop15h 03mMultiple Airlines

Mon 4/216:00 amDCA - YOW

1 stop3h 36mMultiple Airlines

Deal found 3/23

$377

Wed 3/269:25 amYOW - IAD

1 stop7h 29mMultiple Airlines

Tue 4/14:37 pmIAD - YOW

1 stop21h 43mMultiple Airlines

Deal found 3/24

$379

Wed 5/75:55 amYOW - DCA

2 stops16h 54mWestJet

Wed 5/141:45 pmDCA - YOW

2 stops10h 37mWestJet

Deal found 3/23

$420

Sat 4/125:55 amYOW - DCA

2 stops12h 32mDelta

Tue 4/1511:00 amDCA - YOW

2 stops13h 09mDelta

Deal found 3/22

$445

Mon 8/47:15 pmYOW - BWI

2 stops26h 08mWestJet

Thu 8/76:00 amBWI - YOW

2 stops23h 25mWestJet

Deal found 3/24

$594

Tue 7/15:25 pmYOW - BWI

1 stop20h 23mUnited Airlines

Mon 7/75:20 pmBWI - YOW

1 stop20h 44mUnited Airlines

Deal found 3/24

$708

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 March 25, 2025.

Tue 4/155:45 amYOW - DCA

1 stop4h 34mAir Canada

Tue 4/156:40 pmDCA - YOW

1 stop5h 04mAir Canada

Deal found 3/22

$250

Sun 4/138:35 amYOW - IAD

1 stop4h 04mPorter Airlines

Mon 4/141:45 pmIAD - YOW

1 stop3h 24mPorter Airlines

Deal found 3/22

$251

Fri 4/187:29 pmYOW - IAD

Nonstop1h 46mUnited Airlines

Mon 4/218:17 amIAD - YOW

Nonstop1h 41mUnited Airlines

Deal found 3/23

$340

Fri 4/185:50 pmYOW - DCA

1 stop15h 03mMultiple Airlines

Mon 4/216:00 amDCA - YOW

1 stop3h 36mMultiple Airlines

Deal found 3/23

$377

Wed 5/75:55 amYOW - DCA

2 stops16h 54mWestJet

Wed 5/141:45 pmDCA - YOW

2 stops10h 37mWestJet

Deal found 3/23

$420

Sat 4/125:55 amYOW - DCA

2 stops12h 32mDelta

Tue 4/1511:00 amDCA - YOW

2 stops13h 09mDelta

Deal found 3/22

$445

Sun 4/139:50 amYOW - IAD

Nonstop1h 43mAir Canada

Wed 4/168:17 amIAD - YOW

Nonstop1h 41mAir Canada

Deal found 3/22

$255

Fri 4/1810:25 amYOW - DCA

Nonstop1h 36mUnited Airlines

Mon 4/2112:55 pmDCA - YOW

Nonstop1h 32mUnited Airlines

Deal found 3/23

$372

Fri 5/93:50 pmYOW - BWI

1 stop19h 09mMultiple Airlines

Sun 5/115:45 amBWI - YOW

1 stop11h 33mMultiple Airlines

Deal found 3/24

$377

Fri 5/99:35 amYOW - IAD

1 stop5h 31mMultiple Airlines

Mon 5/1211:35 amIAD - YOW

1 stop4h 58mMultiple Airlines

Deal found 3/24

$380

Wed 5/145:55 amYOW - IAD

2 stops16h 59mWestJet

Sun 5/256:00 amIAD - YOW

2 stops18h 52mWestJet

Deal found 3/24

$487

Tue 5/65:55 amYOW - IAD

2 stops13h 58mDelta

Sat 5/1012:25 pmIAD - YOW

2 stops11h 57mDelta

Deal found 3/22

$624

Last-minute flights from Ottawa to Washington, D.C.
Discover last-minute flight deals from Ottawa to Washington, D.C.. Data last updated March 25, 2025 and is based on user searches.

Wed 3/269:25 amYOW - BWI

2 stops14h 47mMultiple Airlines

Thu 4/38:15 amBWI - YOW

1 stop8h 57mMultiple Airlines

Deal found 3/24

$343

Wed 3/269:25 amYOW - IAD

1 stop7h 29mMultiple Airlines

Tue 4/14:37 pmIAD - YOW

1 stop21h 43mMultiple Airlines

Deal found 3/24

$379

Wed 3/265:55 amYOW - BWI

2 stops11h 00mDelta

Fri 3/2812:28 pmBWI - YOW

2 stops11h 41mDelta

Deal found 3/24

$798

Sat 3/299:25 amYOW - BWI

1 stop11h 00mMultiple Airlines

Thu 4/38:15 amBWI - YOW

1 stop8h 57mMultiple Airlines

Deal found 3/24

$357

Sat 3/295:50 pmYOW - IAD

1 stop5h 32mUnited Airlines

Sun 3/308:17 amIAD - YOW

Nonstop1h 41mUnited Airlines

Deal found 3/22

$370

Sat 3/2910:30 amYOW - DCA

Nonstop1h 50mUnited Airlines

Sat 3/295:00 pmDCA - YOW

1 stop5h 01mUnited Airlines

Deal found 3/22

$370

Sat 3/295:15 amYOW - DCA

2 stops10h 44mMultiple Airlines

Tue 4/16:00 amDCA - YOW

2 stops7h 24mMultiple Airlines

Deal found 3/22

$764

Sun 3/305:55 amYOW - DCA

2 stops10h 53mWestJet

Tue 4/11:59 pmDCA - YOW

2 stops10h 10mWestJet

Deal found 3/22

$925

Sun 3/305:55 amYOW - IAD

2 stops10h 28mDelta

Wed 4/212:15 pmIAD - YOW

2 stops11h 54mDelta

Deal found 3/22

$1,052

Tue 4/17:00 amYOW - IAD

1 stop5h 59mPorter Airlines

Mon 4/217:00 amIAD - YOW

1 stop4h 14mPorter Airlines

Deal found 3/24

$280

Thu 4/311:00 amYOW - DCA

1 stop4h 24mAir Canada

Mon 4/76:00 amDCA - YOW

1 stop6h 17mAir Canada

Deal found 3/23

$342

Thu 4/38:25 amYOW - IAD

1 stop5h 31mAir Canada

Mon 4/710:14 pmIAD - YOW

Nonstop1h 39mAir Canada

Deal found 3/23

$357

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 March 25, 2025.

Thu 5/227:00 amYOW - IAD

1 stop3h 16mPorter Airlines

Deal found 3/24

$124

Tue 4/87:29 pmYOW - IAD

Nonstop1h 46mAir Canada

Deal found 3/23

$152

Tue 4/85:45 amYOW - DCA

1 stop4h 34mAir Canada

Deal found 3/23

$157

Tue 4/225:55 amYOW - IAD

1 stop16h 29mMultiple Airlines

Deal found 3/24

$163

Tue 4/89:25 amYOW - BWI

1 stop11h 00mMultiple Airlines

Deal found 3/24

$174

Wed 4/97:29 pmYOW - IAD

Nonstop1h 46mUnited Airlines

Deal found 3/24

$197

Wed 4/910:25 amYOW - DCA

Nonstop1h 36mUnited Airlines

Deal found 3/24

$197

Tue 4/85:55 amYOW - DCA

2 stops12h 32mDelta

Deal found 3/23

$279

Tue 4/225:55 amYOW - DCA

2 stops12h 15mWestJet

Deal found 3/24

$284

Mon 7/216:10 amYOW - BWI

2 stops14h 43mWestJet

Deal found 3/23

$339

Thu 4/105:45 pmYOW - DCA

2 stops28h 57mMultiple Airlines

Deal found 3/23

$348

Wed 4/166:15 amYOW - IAD

2 stops17h 16mWestJet

Deal found 3/24

$455

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

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Tue 4/15

5:45 am-10:19 am

1 stop4h 34m

Washington, D.C. Reagan-National

Tue 4/15

6:40 pm-11:44 pm

1 stop5h 04m

$250

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Sun 4/13

8:35 am-12:39 pm

1 stop4h 04m

Washington, D.C. Dulles Intl

Mon 4/14

1:45 pm-5:09 pm

1 stop3h 24m

$251

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Sun 4/13

9:50 am-11:33 am

Nonstop1h 43m

Washington, D.C. Dulles Intl

Wed 4/16

8:17 am-9:58 am

Nonstop1h 41m

$255

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 4/18

7:29 pm-9:15 pm

Nonstop1h 46m

Washington, D.C. Dulles Intl

Mon 4/21

8:17 am-9:58 am

Nonstop1h 41m

$340

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Fri 4/18

10:25 am-12:01 pm

Nonstop1h 36m

Washington, D.C. Reagan-National

Mon 4/21

12:55 pm-2:27 pm

Nonstop1h 32m

$372

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Fri 4/18

5:50 pm-8:53 am

1 stop15h 03m

Washington, D.C. Reagan-National

Mon 4/21

6:00 am-9:36 am

1 stop3h 36m

$377

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Fri 5/9

3:50 pm-10:59 am

1 stop19h 09m

Baltimore/Washington

Sun 5/11

5:45 am-5:18 pm

1 stop11h 33m

$377

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 5/9

9:35 am-3:06 pm

1 stop5h 31m

Washington, D.C. Dulles Intl

Mon 5/12

11:35 am-4:33 pm

1 stop4h 58m

$380

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Wed 5/7

5:55 am-10:49 pm

2 stops16h 54m

Washington, D.C. Reagan-National

Wed 5/14

1:45 pm-12:22 am

2 stops10h 37m

$420

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Sat 4/12

5:55 am-6:27 pm

2 stops12h 32m

Washington, D.C. Reagan-National

Tue 4/15

11:00 am-12:09 am

2 stops13h 09m

$445

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 27 results

Compare providers for flights from Ottawa to Washington, D.C.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ottawa to Washington, D.C. in March.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

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.

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.?

The price you pay for your flight from Ottawa to Washington, D.C. may vary depending on when you book. For the best chance of a lower fare, look to book 58 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Ottawa to Washington, D.C. (average of $309). Flying from Ottawa to Washington, D.C. in June is currently the most expensive (average of $387). 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?

Unlike at noon, when flights are generally more expensive, you can save up to 54% on flights from Ottawa to Washington, D.C. by exploring options for tickets in the afternoon.

Rainfall in Washington, D.C. by month

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.

Temperature in Washington, D.C. 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 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).

Reviews of airlines servicing Washington, D.C.

Get a feel of what it's like to fly with Delta, Porter Airlines and United Airlines from Ottawa to Washington, D.C. by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,890 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very good

7,890 reviews

Delta

8.0

Very good

7,890 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Porter Airlines

7.9

Good

275 reviews

Delta

8.0

Very good

7,890 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines

7.4

Good

8,605 reviews

Delta

8.0

Very good

7,890 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

WestJet

7.2

Good

2,785 reviews

Delta

8.0

Very good

7,890 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air Canada

7.0

Good

8,952 reviews

Delta

8.0

Very good

7,890 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 5 flights from Ottawa to Washington, D.C. per day from 3 different airlines.
What are the cheapest airlines flying from Ottawa to Washington, D.C. round-trip?
Air Canada, at $250, was found to be the cheapest airline from Ottawa to Washington, D.C..Alternate airlines to your destination round-trip include Porter Airlines and United Airlines. These flights start at 30% 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?
The cheapest airlines for a one-way flight from Ottawa to Washington, D.C. are Porter Airlines ($124), Air Canada ($152), and United Airlines ($197).
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 (77%), GoJet (73%) or Air Canada (73%) 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 $469, our data shows the cheapest flight currently is $164. When looking at the most popular route, (Ottawa - Washington, D.C. Dulles Intl), you can expect to pay $267 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, August is the cheapest month in which you can book a flight from Ottawa to Washington, D.C. (average of $309). Flying from Ottawa to Washington, D.C. in June is currently the most expensive (average of $387). 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

Arlington

Alexandria

Fairfax

Tysons

Springfield

Rockville

Woodbridge

Gaithersburg

Fredericksburg

Linthicum Heights

Silver Spring

Falls Church

Laurel

Easton

Herndon

Bowie

Gettysburg

National Harbor

Oxon Hill

Reston

Browse thousands of different options on Cheapflights for your next trip

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

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$240	Average$414	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$247	Average$404	FlexibilityNo cancel fee	On-time67%
Porter Airlines	Cheapest$273	Average$373	FlexibilityNo cancel fee	On-time52%

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$124+ Cheap flights from Ottawa (YOW) to Washington, D.C. (WAS)

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 5/22. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from Ottawa to Washington, D.C. are usually found in January or November, booked 58 days in advance, depart on a Sunday or Thursday and return on a Thursday

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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 March 25, 2025.

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 March 25, 2025.

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Compare providers for flights from Ottawa to Washington, D.C.

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ottawa to Washington, D.C. in March.

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.

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 March 21, 2025.

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 March 25, 2025.

Rainfall in Washington, D.C. by month

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

Temperature in Washington, D.C. by month

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

Reviews of airlines servicing Washington, D.C.

Get a feel of what it's like to fly with Delta, Porter Airlines and United Airlines from Ottawa to Washington, D.C. by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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.?

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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.?

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Alternative routes for Ottawa to Washington, D.C.

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Top 3 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 March 25, 2025.