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

Our cheapest airline available from Washington, D.C. to Ottawa is Porter Airlines. Our recent data shows that you can find tickets from as low as C$ 349 on this airline. Additional options worth looking into are Air Canada and United Airlines, starting at C$ 409 and C$ 565 round-trip. Porter Airlines is 34% cheaper than the average price of flights available within the next 90 days to this destination.

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

One-way options have recently been found by users for as low as C$ 139 on Porter Airlines. Other airlines that offer cheap prices include Air Canada from C$ 164 and United Airlines from C$ 243 one-way.

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

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

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

The most popular route from Washington, D.C. to Ottawa is Washington, D.C. Dulles Intl - Ottawa. You may also consider Washington, D.C. Reagan-National - Ottawa or Baltimore/Washington - Ottawa.

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

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 307% on your flight compared to booking on days when demand is much higher.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 58 days in advance, which can save you up to 178% on flights from Washington, D.C. to Ottawa compared to booking the week you need them. Waiting 58 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at C$ 384. For sooner than that we have options available in the next 3 days from C$ 543.

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

Flights from Washington, D.C. to Ottawa lean towards being more expensive in March. Prices are generally better when you fly from Washington, D.C. to Ottawa in January, with the cheapest ticket starting at C$ 238.

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

Ottawa (YOW), located 10.6 km from the city centre, is the airport you fly into when you book flights from Washington, D.C. to Ottawa. 2 airlines have flights to Ottawa from Washington, D.C. on a regular basis. Booking flights from Washington, D.C. to Ottawa should not be difficult; the airport handles an average of 8 inbound flights from Washington, D.C. per day.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Washington, D.C. 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.

C$ 139+ Flights from Washington, D.C. to Ottawa

Cheapflights Tip: The best prices from Washington, D.C. to Ottawa are usually found in January or November, booked 57 days in advance, depart on a Tuesday or Saturday and return on a Friday

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

Round-trip from	C$ 349
One-way from	C$ 139
Popular in	March
Cheapest in	January
Average price	C$ 563
Good one-way deal	C$ 208 or less

Porter Airlines
31/10-3/11
2 total stops
6h 43m total
Washington, D.C. to Ottawa

Search Deals

Porter Airlines
22/7
1 total stop
3h 28m total
Washington, D.C. to Ottawa

Search Deals

Highest demand for flights based on searches. 2% potential increase in price (C$ 15 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 17 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in June 2025

Search Deals

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

Search Deals

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

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

Fri 31/106:30 p.m.IAD - YOW

1 stop3h 24mPorter Airlines

Mon 3/119:40 a.m.YOW - IAD

1 stop3h 19mPorter Airlines

Deal found 11/6C$ 349

Fri 25/712:55 p.m.DCA - YOW

Nonstop1h 32mAir Canada

Fri 1/810:25 a.m.YOW - DCA

Nonstop1h 38mAir Canada

Deal found 10/6C$ 409

Wed 9/74:10 p.m.IAD - YOW

1 stop8h 12mMultiple Airlines

Thu 17/711:00 a.m.YOW - IAD

1 stop3h 56mMultiple Airlines

Deal found 10/6C$ 422

Sat 6/99:45 a.m.IAD - YOW

1 stop4h 06mAir Canada

Mon 8/92:40 p.m.YOW - IAD

1 stop6h 25mAir Canada

Deal found 10/6C$ 439

Wed 9/78:40 a.m.BWI - YOW

1 stop8h 26mMultiple Airlines

Thu 17/75:00 p.m.YOW - BWI

1 stop5h 21mMultiple Airlines

Deal found 10/6C$ 532

Thu 3/78:18 a.m.IAD - YOW

Nonstop1h 40mUnited Airlines

Wed 23/79:50 a.m.YOW - IAD

Nonstop1h 39mUnited Airlines

Deal found 10/6C$ 565

Thu 3/712:55 p.m.DCA - YOW

Nonstop1h 32mUnited Airlines

Thu 3/75:25 p.m.YOW - DCA

1 stop5h 17mUnited Airlines

Deal found 11/6C$ 621

Fri 25/76:00 a.m.DCA - YOW

2 stops18h 22mMultiple Airlines

Fri 1/85:55 a.m.YOW - DCA

1 stop13h 47mMultiple Airlines

Deal found 10/6C$ 629

Thu 3/77:40 p.m.DCA - YOW

2 stops28h 42mWestJet

Sat 5/75:55 a.m.YOW - DCA

2 stops17h 02mWestJet

Deal found 11/6C$ 950

Wed 23/78:45 a.m.DCA - YOW

2 stops15h 37mDelta

Wed 30/75:55 a.m.YOW - DCA

2 stops13h 00mDelta

Deal found 9/6C$ 1,040

Mon 23/61:34 p.m.BWI - YOW

2 stops10h 48mWestJet

Wed 25/65:55 a.m.YOW - BWI

2 stops17h 53mWestJet

Deal found 11/6C$ 1,050

Thu 3/76:15 a.m.BWI - YOW

1 stop15h 20mUnited Airlines

Sun 6/75:15 a.m.YOW - BWI

2 stops28h 48mUnited Airlines

Deal found 10/6C$ 1,177

Best flights from Washington, D.C. to Ottawa
Discover carefully curated flight deals from Washington, D.C. to Ottawa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 12 June 2025.

Fri 31/106:30 p.m.IAD - YOW

1 stop3h 24mPorter Airlines

Mon 3/119:40 a.m.YOW - IAD

1 stop3h 19mPorter Airlines

Deal found 11/6C$ 349

Fri 25/712:55 p.m.DCA - YOW

Nonstop1h 32mAir Canada

Fri 1/810:25 a.m.YOW - DCA

Nonstop1h 38mAir Canada

Deal found 10/6C$ 409

Wed 9/74:10 p.m.IAD - YOW

1 stop8h 12mMultiple Airlines

Thu 17/711:00 a.m.YOW - IAD

1 stop3h 56mMultiple Airlines

Deal found 10/6C$ 422

Thu 3/78:18 a.m.IAD - YOW

Nonstop1h 40mUnited Airlines

Wed 23/79:50 a.m.YOW - IAD

Nonstop1h 39mUnited Airlines

Deal found 10/6C$ 565

Wed 13/86:45 p.m.IAD - YOW

1 stop12h 00mWestJet

Mon 18/85:55 a.m.YOW - IAD

2 stops10h 35mWestJet

Deal found 10/6C$ 856

Sat 6/99:45 a.m.IAD - YOW

1 stop4h 06mAir Canada

Mon 8/92:40 p.m.YOW - IAD

1 stop6h 25mAir Canada

Deal found 10/6C$ 439

Wed 23/78:45 a.m.DCA - YOW

2 stops15h 37mDelta

Wed 30/75:55 a.m.YOW - DCA

2 stops13h 00mDelta

Deal found 9/6C$ 1,040

Wed 9/78:40 a.m.BWI - YOW

1 stop8h 26mMultiple Airlines

Thu 17/75:00 p.m.YOW - BWI

1 stop5h 21mMultiple Airlines

Deal found 10/6C$ 532

Thu 3/712:55 p.m.DCA - YOW

Nonstop1h 32mUnited Airlines

Thu 3/75:25 p.m.YOW - DCA

1 stop5h 17mUnited Airlines

Deal found 11/6C$ 621

Fri 25/76:00 a.m.DCA - YOW

2 stops18h 22mMultiple Airlines

Fri 1/85:55 a.m.YOW - DCA

1 stop13h 47mMultiple Airlines

Deal found 10/6C$ 629

Thu 3/77:40 p.m.DCA - YOW

2 stops28h 42mWestJet

Sat 5/75:55 a.m.YOW - DCA

2 stops17h 02mWestJet

Deal found 11/6C$ 950

Mon 23/61:34 p.m.BWI - YOW

2 stops10h 48mWestJet

Wed 25/65:55 a.m.YOW - BWI

2 stops17h 53mWestJet

Deal found 11/6C$ 1,050

Direct flights from Washington, D.C. to Ottawa
Explore direct flight options from Washington, D.C. to Ottawa based on user searches, and compare prices and availability for your desired travel dates. Data last updated 12 June 2025.

Fri 25/712:55 p.m.DCA - YOW

Nonstop1h 32mAir Canada

Fri 1/810:25 a.m.YOW - DCA

Nonstop1h 38mAir Canada

Deal found 10/6C$ 409

Sat 6/912:35 p.m.IAD - YOW

Nonstop1h 38mAir Canada

Mon 8/97:29 p.m.YOW - IAD

Nonstop1h 43mAir Canada

Deal found 12/6C$ 526

Thu 3/78:18 a.m.IAD - YOW

Nonstop1h 40mUnited Airlines

Wed 23/79:50 a.m.YOW - IAD

Nonstop1h 39mUnited Airlines

Deal found 10/6C$ 565

Fri 25/712:55 p.m.DCA - YOW

Nonstop1h 32mUnited Airlines

Sun 27/710:25 a.m.YOW - DCA

Nonstop1h 38mUnited Airlines

Deal found 10/6C$ 638

Thu 3/712:55 p.m.DCA - YOW

Nonstop1h 32mMultiple Airlines

Mon 7/710:25 a.m.YOW - DCA

Nonstop1h 38mMultiple Airlines

Deal found 11/6C$ 699

Fri 31/1010:12 p.m.IAD - YOW

Nonstop1h 42mMultiple Airlines

Mon 3/117:30 p.m.YOW - IAD

Nonstop1h 52mMultiple Airlines

Deal found 11/6C$ 779

Last-minute flights from Washington, D.C. to Ottawa
Discover last-minute flight deals from Washington, D.C. to Ottawa. Data last updated 12 June 2025 and is based on user searches.

Tue 17/64:20 p.m.IAD - YOW

1 stop4h 43mPorter Airlines

Tue 24/610:15 a.m.YOW - IAD

1 stop4h 51mPorter Airlines

Deal found 10/6C$ 528

Tue 17/611:19 a.m.BWI - YOW

1 stop10h 16mUnited Airlines

Tue 24/610:37 a.m.YOW - BWI

1 stop23h 36mUnited Airlines

Deal found 10/6C$ 1,384

Wed 18/68:18 a.m.IAD - YOW

Nonstop1h 40mAir Canada

Sat 21/67:29 p.m.YOW - IAD

Nonstop1h 35mAir Canada

Deal found 10/6C$ 662

Wed 18/66:45 p.m.IAD - YOW

1 stop12h 00mWestJet

Wed 25/65:55 a.m.YOW - IAD

2 stops10h 38mWestJet

Deal found 11/6C$ 1,229

Wed 18/69:39 a.m.DCA - YOW

2 stops14h 43mDelta

Wed 25/65:55 a.m.YOW - DCA

2 stops13h 04mDelta

Deal found 11/6C$ 1,452

Wed 18/66:00 a.m.DCA - YOW

2 stops9h 05mUnited Airlines

Wed 18/65:25 p.m.YOW - DCA

1 stop5h 17mUnited Airlines

Deal found 10/6C$ 1,624

Thu 19/67:00 a.m.DCA - YOW

1 stop9h 43mMultiple Airlines

Tue 24/69:55 p.m.YOW - DCA

1 stop10h 57mMultiple Airlines

Deal found 11/6C$ 938

Thu 19/66:00 a.m.DCA - YOW

2 stops18h 22mWestJet

Tue 24/612:20 p.m.YOW - DCA

2 stops11h 02mWestJet

Deal found 11/6C$ 1,520

Thu 19/65:40 a.m.BWI - YOW

2 stops18h 42mWestJet

Sun 22/66:10 a.m.YOW - BWI

2 stops12h 28mWestJet

Deal found 10/6C$ 1,606

Fri 20/612:55 p.m.DCA - YOW

Nonstop1h 32mAir Canada

Mon 30/610:25 a.m.YOW - DCA

Nonstop1h 38mAir Canada

Deal found 10/6C$ 491

Fri 20/64:20 p.m.IAD - YOW

1 stop4h 43mMultiple Airlines

Mon 30/65:55 a.m.YOW - IAD

1 stop9h 11mMultiple Airlines

Deal found 10/6C$ 607

Fri 20/68:38 p.m.BWI - YOW

1 stop20h 37mMultiple Airlines

Mon 30/63:50 p.m.YOW - BWI

1 stop27h 43mMultiple Airlines

Deal found 10/6C$ 614

One-way flights from Washington, D.C. to Ottawa
Search for one-way flight options from Washington, D.C. to Ottawa. Find affordable one-way fares based on user searches. Data last updated 12 June 2025.

Tue 22/74:10 p.m.IAD - YOW

1 stop3h 28mPorter Airlines

Deal found 12/6C$ 139

Thu 25/912:55 p.m.DCA - YOW

Nonstop1h 31mAir Canada

Deal found 10/6C$ 164

Thu 25/99:45 a.m.IAD - YOW

1 stop4h 06mAir Canada

Deal found 10/6C$ 168

Fri 18/711:35 a.m.IAD - YOW

1 stop12h 47mMultiple Airlines

Deal found 12/6C$ 178

Mon 14/77:10 a.m.BWI - YOW

1 stop9h 48mMultiple Airlines

Deal found 10/6C$ 185

Sun 6/78:18 a.m.IAD - YOW

Nonstop1h 40mUnited Airlines

Deal found 10/6C$ 243

Wed 9/78:30 a.m.DCA - YOW

1 stop5h 34mUnited Airlines

Deal found 10/6C$ 263

Sun 13/79:05 a.m.DCA - YOW

1 stop7h 38mMultiple Airlines

Deal found 10/6C$ 334

Sat 26/710:15 a.m.DCA - YOW

2 stops14h 07mDelta

Deal found 11/6C$ 417

Sat 23/86:15 a.m.BWI - YOW

1 stop10h 51mUnited Airlines

Deal found 10/6C$ 446

Sun 13/76:40 a.m.DCA - YOW

2 stops17h 42mWestJet

Deal found 10/6C$ 457

Sat 23/81:20 p.m.BWI - YOW

2 stops17h 25mWestJet

Deal found 11/6C$ 485

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 31/10

6:30 p.m.-9:54 p.m.

1 stop3h 24m

Ottawa

Mon 3/11

9:40 a.m.-12:59 p.m.

1 stop3h 19m

C$ 349

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Fri 25/7

12:55 p.m.-2:27 p.m.

Nonstop1h 32m

Ottawa

Fri 1/8

10:25 a.m.-12:03 p.m.

Nonstop1h 38m

C$ 409

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 9/7

4:10 p.m.-12:22 a.m.

1 stop8h 12m

Ottawa

Thu 17/7

11:00 a.m.-2:56 p.m.

1 stop3h 56m

C$ 422

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sat 6/9

9:45 a.m.-1:51 p.m.

1 stop4h 06m

Ottawa

Mon 8/9

2:40 p.m.-9:05 p.m.

1 stop6h 25m

C$ 439

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Wed 9/7

8:40 a.m.-5:06 p.m.

1 stop8h 26m

Ottawa

Thu 17/7

5:00 p.m.-10:21 p.m.

1 stop5h 21m

C$ 532

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 3/7

8:18 a.m.-9:58 a.m.

Nonstop1h 40m

Ottawa

Wed 23/7

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

Nonstop1h 39m

C$ 565

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Thu 3/7

12:55 p.m.-2:27 p.m.

Nonstop1h 32m

Ottawa

Thu 3/7

5:25 p.m.-10:42 p.m.

1 stop5h 17m

C$ 621

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Fri 25/7

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

2 stops18h 22m

Ottawa

Fri 1/8

5:55 a.m.-7:42 p.m.

1 stop13h 47m

C$ 629

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 13/8

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

1 stop12h 00m

Ottawa

Mon 18/8

5:55 a.m.-4:30 p.m.

2 stops10h 35m

C$ 856

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Thu 3/7

7:40 p.m.-12:22 a.m.

2 stops28h 42m

Ottawa

Sat 5/7

5:55 a.m.-10:57 p.m.

2 stops17h 02m

C$ 950

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/6

Showing 1-10 of 29 results

Best time to book a flight from Washington, D.C. to Ottawa

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

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

The best time to book flights from Washington, D.C. to Ottawa is 57 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Ottawa (average of C$ 224). Flying from Washington, D.C. 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 WAS to YOW?

When flying from Washington, D.C. to Ottawa, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 58% versus a flight at noon.

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

The most flights from WAS to YOW are scheduled on a Wednesday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in Ottawa 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

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 a feel of what it's like to fly with Porter Airlines, Delta and United Airlines from Washington, D.C. to Ottawa by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Porter Airlines

8.0

Very good

288 reviews

Check prices

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!!!

Porter Airlines

8.0

Very good

288 reviews

Porter Airlines

8.0

Very good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

Delta

8.0

Very good

7,950 reviews

Porter Airlines

8.0

Very good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

United Airlines

7.4

Good

8,790 reviews

Porter Airlines

8.0

Very good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

WestJet

7.2

Good

2,868 reviews

Porter Airlines

8.0

Very good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

Air Canada

7.1

Good

9,531 reviews

Porter Airlines

8.0

Very good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

Related info for your journey

What airport do you fly into for flights to Ottawa from Washington, D.C.?
Ottawa (YOW), located 10.6 km from the city centre, is the airport you fly into when you book flights from Washington, D.C. to Ottawa. 2 airlines have flights to Ottawa from Washington, D.C. on a regular basis. Booking flights from Washington, D.C. to Ottawa should not be difficult; the airport handles an average of 8 inbound flights from Washington, D.C. per day.
What are the cheapest airlines flying from Washington, D.C. to Ottawa round-trip?
Our cheapest airline available from Washington, D.C. to Ottawa is Porter Airlines. Our recent data shows that you can find tickets from as low as C$ 349 on this airline. Additional options worth looking into are Air Canada and United Airlines, starting at C$ 409 and C$ 565 round-trip. Porter Airlines is 34% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from Washington, D.C. to Ottawa one-way?
One-way options have recently been found by users for as low as C$ 139 on Porter Airlines. Other airlines that offer cheap prices include Air Canada from C$ 164 and United Airlines from C$ 243 one-way.
What are the most popular routes from Washington, D.C. to Ottawa?
The most popular route from Washington, D.C. to Ottawa is Washington, D.C. Dulles Intl - Ottawa. You may also consider Washington, D.C. Reagan-National - Ottawa or Baltimore/Washington - Ottawa.
Can I find deals for flights from Washington, D.C. to Ottawa that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Ottawa flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Ottawa?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Ottawa.
Can I find deals for business class flights from Washington, D.C. to Ottawa?
Yes. Cheapflights offers flight deals from Washington, D.C. 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 Washington, D.C. to Ottawa?
Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Ottawa (average of C$ 224). Flying from Washington, D.C. 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

Gatineau

Brockville

Perth

Smiths Falls

Prescott

Pembroke

Wakefield

Lanark

Browse thousands of different options on Cheapflights for your next trip

Other flights to Ottawa

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

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	CheapestC$ 222	AverageC$ 515	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Porter Airlines	CheapestC$ 388	AverageC$ 476	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights

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How does Cheapflights help users find flights from Washington, D.C. to Ottawa?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Washington, D.C. to Ottawa. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Washington, D.C. to Ottawa?

Cheapflights simply makes it quick and affordable to book flights from Washington, D.C. to Ottawa by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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Cheap flights from Washington, D.C. to Ottawa from C$ 139

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 22/7. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Washington, D.C. to Ottawa are usually found in January or November, booked 57 days in advance, depart on a Tuesday or Saturday and return on a Friday

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

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

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

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

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Best time to book a flight from Washington, D.C. to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from Washington, D.C. with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Ottawa

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

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Ottawa. Price data was last updated on 9 June 2025.

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

What is the cheapest time of day to fly from WAS to YOW?

Find hourly flight availability from Washington, D.C. 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.

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

Rainfall in Ottawa by month

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

Temperature in Ottawa by month

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

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.

Related info for your journey

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

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

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

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

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

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

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

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

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Alternative routes for Washington, D.C. to Ottawa

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

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