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$ 382 on this airline. Additional options worth looking into are Air Canada and WestJet, starting at C$ 419 and C$ 462 round-trip. Porter Airlines is 28% 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$ 190 on Air Canada. Other airlines that offer cheap prices include Porter Airlines from C$ 201 and United Airlines from C$ 226 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 Friday 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.

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.

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).

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 314% 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 181% 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$ 354. For sooner than that we have options available in the next 3 days from C$ 548.

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$ 240.

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$ 190+ 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$ 382
One-way from	C$ 190
Popular in	March
Cheapest in	January
Average price	C$ 567

Porter Airlines
27/8-3/9
2 total stops
7h 34m total
Washington, D.C. to Ottawa

Search Deals

Air Canada
19/10
1 total stop
5h 29m total
Washington, D.C. to Ottawa

Search Deals

Highest demand for flights based on searches. 2% potential increase in price (C$ 20 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 July 2025

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 30 July 2025.

Wed 27/84:10 p.m.IAD - YOW

1 stop3h 28mPorter Airlines

Wed 3/911:00 a.m.YOW - IAD

1 stop4h 06mPorter Airlines

Deal found 29/7C$ 382

Fri 5/912:55 p.m.DCA - YOW

Nonstop1h 31mAir Canada

Fri 12/910:25 a.m.YOW - DCA

Nonstop1h 43mAir Canada

Deal found 29/7C$ 419

Sun 21/94:20 p.m.IAD - YOW

1 stop3h 39mMultiple Airlines

Fri 26/95:55 a.m.YOW - IAD

1 stop9h 11mMultiple Airlines

Deal found 30/7C$ 440

Sat 27/910:20 a.m.IAD - YOW

1 stop4h 44mAir Canada

Tue 30/92:40 p.m.YOW - IAD

1 stop6h 25mAir Canada

Deal found 29/7C$ 443

Fri 5/96:45 p.m.IAD - YOW

1 stop20h 11mWestJet

Fri 12/96:00 a.m.YOW - IAD

1 stop11h 50mWestJet

Deal found 28/7C$ 462

Sat 13/94:35 p.m.DCA - YOW

2 stops7h 47mMultiple Airlines

Sun 14/910:25 a.m.YOW - DCA

Nonstop1h 43mMultiple Airlines

Deal found 30/7C$ 513

Wed 20/87:25 a.m.DCA - YOW

1 stop6h 39mUnited Airlines

Wed 20/85:25 p.m.YOW - DCA

1 stop5h 18mUnited Airlines

Deal found 30/7C$ 555

Wed 27/85:45 a.m.BWI - YOW

2 stops18h 36mMultiple Airlines

Wed 3/97:00 a.m.YOW - BWI

2 stops23h 54mMultiple Airlines

Deal found 30/7C$ 560

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 30 July 2025.

Wed 27/84:10 p.m.IAD - YOW

1 stop3h 28mPorter Airlines

Wed 3/911:00 a.m.YOW - IAD

1 stop4h 06mPorter Airlines

Deal found 29/7C$ 382

Fri 5/912:55 p.m.DCA - YOW

Nonstop1h 31mAir Canada

Fri 12/910:25 a.m.YOW - DCA

Nonstop1h 43mAir Canada

Deal found 29/7C$ 419

Sun 21/94:20 p.m.IAD - YOW

1 stop3h 39mMultiple Airlines

Fri 26/95:55 a.m.YOW - IAD

1 stop9h 11mMultiple Airlines

Deal found 30/7C$ 440

Fri 5/96:45 p.m.IAD - YOW

1 stop20h 11mWestJet

Fri 12/96:00 a.m.YOW - IAD

1 stop11h 50mWestJet

Deal found 28/7C$ 462

Wed 20/87:25 a.m.DCA - YOW

1 stop6h 39mUnited Airlines

Wed 20/85:25 p.m.YOW - DCA

1 stop5h 18mUnited Airlines

Deal found 30/7C$ 555

Sat 27/910:20 a.m.IAD - YOW

1 stop4h 44mAir Canada

Tue 30/92:40 p.m.YOW - IAD

1 stop6h 25mAir Canada

Deal found 29/7C$ 443

Sat 13/94:35 p.m.DCA - YOW

2 stops7h 47mMultiple Airlines

Sun 14/910:25 a.m.YOW - DCA

Nonstop1h 43mMultiple Airlines

Deal found 30/7C$ 513

Wed 27/85:45 a.m.BWI - YOW

2 stops18h 36mMultiple Airlines

Wed 3/97:00 a.m.YOW - BWI

2 stops23h 54mMultiple Airlines

Deal found 30/7C$ 560

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 30 July 2025.

Fri 5/912:55 p.m.DCA - YOW

Nonstop1h 31mAir Canada

Fri 12/910:25 a.m.YOW - DCA

Nonstop1h 43mAir Canada

Deal found 29/7C$ 419

Wed 20/88:16 a.m.IAD - YOW

Nonstop1h 42mUnited Airlines

Wed 20/87:29 p.m.YOW - IAD

Nonstop1h 43mUnited Airlines

Deal found 28/7C$ 520

Sat 27/912:35 p.m.IAD - YOW

Nonstop1h 38mAir Canada

Tue 30/99:50 a.m.YOW - IAD

Nonstop1h 43mAir Canada

Deal found 29/7C$ 552

Fri 22/812:55 p.m.DCA - YOW

Nonstop1h 32mUnited Airlines

Mon 25/810:25 a.m.YOW - DCA

Nonstop1h 38mUnited Airlines

Deal found 30/7C$ 604

Last-minute flights from Washington, D.C. to Ottawa
Discover last-minute flight deals from Washington, D.C. to Ottawa. Data last updated 30 July 2025 and is based on user searches.

Tue 5/86:25 a.m.BWI - YOW

1 stop10h 55mMultiple Airlines

Wed 6/83:50 p.m.YOW - BWI

1 stop7h 44mMultiple Airlines

Deal found 30/7C$ 855

Tue 5/812:31 p.m.IAD - YOW

Nonstop1h 42mAir Canada

Tue 12/811:05 a.m.YOW - IAD

1 stop5h 14mAir Canada

Deal found 29/7C$ 1,164

Thu 7/811:58 a.m.IAD - YOW

3 stops29h 05mMultiple Airlines

Thu 14/89:35 a.m.YOW - IAD

1 stop5h 21mMultiple Airlines

Deal found 29/7C$ 748

Thu 7/81:00 p.m.DCA - YOW

1 stop9h 05mMultiple Airlines

Sun 10/85:15 a.m.YOW - DCA

1 stop3h 42mMultiple Airlines

Deal found 29/7C$ 1,200

Fri 8/811:35 a.m.IAD - YOW

1 stop5h 28mPorter Airlines

Fri 15/87:00 a.m.YOW - IAD

1 stop3h 16mPorter Airlines

Deal found 29/7C$ 686

Fri 8/812:55 p.m.DCA - YOW

Nonstop1h 32mAir Canada

Thu 14/810:25 a.m.YOW - DCA

Nonstop1h 38mAir Canada

Deal found 29/7C$ 732

Fri 8/88:18 a.m.IAD - YOW

Nonstop1h 40mUnited Airlines

Sat 16/89:50 a.m.YOW - IAD

Nonstop1h 39mUnited Airlines

Deal found 29/7C$ 800

Fri 8/812:55 p.m.DCA - YOW

Nonstop1h 32mUnited Airlines

Mon 11/810:25 a.m.YOW - DCA

Nonstop1h 38mUnited Airlines

Deal found 30/7C$ 1,295

Fri 8/810:19 a.m.DCA - YOW

2 stops14h 03mWestJet

Sun 10/85:55 a.m.YOW - DCA

2 stops29h 25mWestJet

Deal found 29/7C$ 1,435

Fri 8/86:15 a.m.BWI - YOW

1 stop7h 49mUnited Airlines

Fri 8/85:25 p.m.YOW - BWI

1 stop16h 38mUnited Airlines

Deal found 30/7C$ 2,244

Mon 18/84:10 p.m.IAD - YOW

1 stop4h 53mMultiple Airlines

Tue 19/88:35 a.m.YOW - IAD

1 stop5h 07mMultiple Airlines

Deal found 28/7C$ 461

Tue 19/89:45 a.m.IAD - YOW

1 stop3h 59mAir Canada

Wed 20/82:45 p.m.YOW - IAD

Nonstop1h 43mAir Canada

Deal found 28/7C$ 497

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 30 July 2025.

Sun 19/1012:55 p.m.DCA - YOW

Nonstop1h 31mAir Canada

Deal found 29/7C$ 190

Sun 19/109:35 a.m.IAD - YOW

1 stop4h 16mAir Canada

Deal found 29/7C$ 190

Wed 20/84:10 p.m.IAD - YOW

1 stop3h 28mPorter Airlines

Deal found 29/7C$ 201

Wed 20/85:13 p.m.IAD - YOW

Nonstop1h 39mUnited Airlines

Deal found 29/7C$ 226

Wed 20/86:37 a.m.BWI - YOW

1 stop10h 43mMultiple Airlines

Deal found 29/7C$ 266

Sun 19/1012:55 p.m.DCA - YOW

Nonstop1h 31mUnited Airlines

Deal found 29/7C$ 301

Sun 19/108:13 p.m.IAD - YOW

2 stops21h 07mMultiple Airlines

Deal found 29/7C$ 319

Tue 9/910:51 a.m.BWI - YOW

1 stop10h 44mUnited Airlines

Deal found 30/7C$ 446

Wed 20/81:40 p.m.DCA - YOW

2 stops10h 42mWestJet

Deal found 28/7C$ 451

Fri 29/86:45 p.m.IAD - YOW

3 stops34h 40mWestJet

Deal found 29/7C$ 469

Tue 9/96:00 a.m.DCA - YOW

3 stops10h 34mMultiple Airlines

Deal found 30/7C$ 495

Tue 30/126:05 a.m.BWI - YOW

2 stops18h 37mWestJet

Deal found 29/7C$ 654

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

Wed 27/8

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

1 stop3h 28m

Ottawa

Wed 3/9

11:00 a.m.-3:06 p.m.

1 stop4h 06m

C$ 382

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Fri 5/9

12:55 p.m.-2:26 p.m.

Nonstop1h 31m

Ottawa

Fri 12/9

10:25 a.m.-12:08 p.m.

Nonstop1h 43m

C$ 419

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sun 21/9

4:20 p.m.-7:59 p.m.

1 stop3h 39m

Ottawa

Fri 26/9

5:55 a.m.-3:06 p.m.

1 stop9h 11m

C$ 440

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sat 27/9

10:20 a.m.-3:04 p.m.

1 stop4h 44m

Ottawa

Tue 30/9

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

1 stop6h 25m

C$ 443

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 5/9

6:45 p.m.-2:56 p.m.

1 stop20h 11m

Ottawa

Fri 12/9

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

1 stop11h 50m

C$ 462

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Sat 13/9

4:35 p.m.-12:22 a.m.

2 stops7h 47m

Ottawa

Sun 14/9

10:25 a.m.-12:08 p.m.

Nonstop1h 43m

C$ 513

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Wed 20/8

7:25 a.m.-2:04 p.m.

1 stop6h 39m

Ottawa

Wed 20/8

5:25 p.m.-10:43 p.m.

1 stop5h 18m

C$ 555

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Wed 27/8

5:45 a.m.-12:21 a.m.

2 stops18h 36m

Ottawa

Wed 3/9

7:00 a.m.-6:54 a.m.

2 stops23h 54m

C$ 560

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Sun 19/10

12:55 p.m.-2:26 p.m.

Nonstop1h 31m

C$ 190

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sun 19/10

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

1 stop4h 16m

C$ 190

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/7

Showing 1-10 of 21 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 morning, which can drop the price by up to 57% 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 Monday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (7 on average).

Reviews of airlines servicing Ottawa

Get a feel of what it's like to fly with Porter Airlines,Delta, andUnited Airlines from Washington, D.C. to Ottawa by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience

Porter Airlines

8.0

Very good

318 reviews

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

Delta

8.0

Very good

7,980 reviews

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

United Airlines

7.4

Good

8,896 reviews

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

WestJet

7.2

Good

2,975 reviews

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

Air Canada

7.1

Good

9,837 reviews

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - 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$ 382 on this airline. Additional options worth looking into are Air Canada and WestJet, starting at C$ 419 and C$ 462 round-trip. Porter Airlines is 28% 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$ 190 on Air Canada. Other airlines that offer cheap prices include Porter Airlines from C$ 201 and United Airlines from C$ 226 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

Smiths Falls

Perth

Prescott

Pembroke

Wakefield

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$ 224	AverageC$ 483	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Porter Airlines	CheapestC$ 391	AverageC$ 480	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.

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

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Cheap flights from Washington, D.C. to Ottawa from C$ 190

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 19/10. 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

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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 30 July 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 30 July 2025.

Cheapflights Fare Finder

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

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 25 July 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 30 July 2025.

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

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 30 July 2025.

Get a feel of what it's like to fly with Porter Airlines,Delta, andUnited Airlines from Washington, D.C. to Ottawa by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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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 30 July 2025.