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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 23/6. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YOW
3 Jun — 10 Jun1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Washington, D.C. to Ottawa are usually found in October or July, booked 21 days in advance, depart on a Thursday or Monday and return on a Saturday

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

Enter your travel dates to find the best prices.

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 4 May 2026.

Sat 30/511:30 a.m.
IAD
-
YOW
1 stop7h 44m
Multiple Airlines
Sat 6/67:00 a.m.
YOW
-
IAD
1 stop12h 50m
Multiple Airlines
Deal found 2/5C$ 473
Fri 12/611:30 a.m.
IAD
-
YOW
1 stop3h 24m
Porter Airlines
Fri 19/611:00 a.m.
YOW
-
IAD
1 stop4h 16m
Porter Airlines
Deal found 1/5C$ 481
Mon 1/611:30 a.m.
IAD
-
YOW
1 stop3h 24m
Porter Airlines
Thu 18/611:00 a.m.
YOW
-
IAD
1 stop4h 16m
Porter Airlines
Deal found 30/4C$ 486
Sun 7/68:47 p.m.
IAD
-
YOW
2 stops18h 13m
Multiple Airlines
Fri 12/611:00 a.m.
YOW
-
IAD
1 stop4h 21m
Multiple Airlines
Deal found 1/5C$ 489
Wed 15/74:00 p.m.
IAD
-
YOW
1 stop4h 04m
Porter Airlines
Tue 21/711:00 a.m.
YOW
-
IAD
1 stop4h 16m
Porter Airlines
Deal found 1/5C$ 491
Wed 15/711:30 a.m.
IAD
-
YOW
1 stop6h 24m
Porter Airlines
Sat 18/711:00 a.m.
YOW
-
IAD
1 stop4h 16m
Porter Airlines
Deal found 1/5C$ 492
Thu 16/711:30 a.m.
IAD
-
YOW
1 stop6h 24m
Porter Airlines
Tue 21/711:00 a.m.
YOW
-
IAD
1 stop4h 16m
Porter Airlines
Deal found 1/5C$ 493
Tue 14/711:30 a.m.
IAD
-
YOW
1 stop6h 24m
Porter Airlines
Sat 18/711:00 a.m.
YOW
-
IAD
1 stop4h 16m
Porter Airlines
Deal found 1/5C$ 495
Wed 15/711:30 a.m.
IAD
-
YOW
1 stop6h 24m
Porter Airlines
Fri 17/711:00 a.m.
YOW
-
IAD
1 stop4h 16m
Porter Airlines
Deal found 1/5C$ 499
Mon 15/64:05 p.m.
IAD
-
YOW
1 stop3h 59m
Porter Airlines
Mon 22/611:00 a.m.
YOW
-
IAD
1 stop4h 16m
Porter Airlines
Deal found 1/5C$ 500
Thu 16/711:30 a.m.
IAD
-
YOW
1 stop6h 24m
Porter Airlines
Fri 17/711:00 a.m.
YOW
-
IAD
1 stop4h 16m
Porter Airlines
Deal found 1/5C$ 501
Tue 30/64:00 p.m.
IAD
-
YOW
1 stop4h 04m
Porter Airlines
Thu 2/711:00 a.m.
YOW
-
IAD
1 stop4h 16m
Porter Airlines
Deal found 3/5C$ 503

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

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Ottawa (YOW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 4 May 2026.

Round-trip from

C$ 473

One-way from

C$ 190

Popular in

December

Cheapest in

October

Average price

C$ 607

Good round-trip deal

C$ 238 or less

Good one-way deal

C$ 310 or less
30/5-6/6
  • 30/5-6/6
  • 2 total stops
  • 20h 34m total
  • Washington, D.C. to Ottawa
Search Deals
23/6
  • 23/6
  • 2 total stops
  • 30h 47m total
  • Washington, D.C. to Ottawa
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 114 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. (WAS) to Ottawa.
Search Deals
Price to beat on a one-way flight from Washington, D.C. (WAS) to Ottawa.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Ottawa that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 4 May 2026.
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

Cheapest round-trip

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Sat 24/10

12:40 p.m.-2:10 p.m.

Nonstop1h 30m

Ottawa

Fri 30/10

10:30 a.m.-12:19 p.m.

Nonstop1h 49m

C$ 583
Quickest round-trip

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Fri 19/6

12:40 p.m.-2:11 p.m.

Nonstop1h 31m

Ottawa

Sat 27/6

10:25 a.m.-12:00 p.m.

Nonstop1h 35m

C$ 597

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Fri 10/7

6:00 a.m.-10:35 a.m.

1 stop4h 35m

Ottawa

Tue 14/7

6:00 a.m.-10:18 a.m.

1 stop4h 18m

C$ 606

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Wed 26/8

12:40 p.m.-2:11 p.m.

Nonstop1h 31m

Ottawa

Tue 8/9

10:25 a.m.-12:00 p.m.

Nonstop1h 35m

C$ 612

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Fri 4/9

12:40 p.m.-2:11 p.m.

Nonstop1h 31m

Ottawa

Tue 8/9

11:15 a.m.-3:40 p.m.

1 stop4h 25m

C$ 617

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Tue 9/6

11:30 a.m.-2:54 p.m.

1 stop3h 24m

Ottawa

Wed 10/6

11:00 a.m.-3:21 p.m.

1 stop4h 21m

C$ 624

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 30/7

11:30 a.m.-5:54 p.m.

1 stop6h 24m

Ottawa

Sun 2/8

11:00 a.m.-3:16 p.m.

1 stop4h 16m

C$ 633

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Wed 3/6

6:00 a.m.-9:41 a.m.

1 stop3h 41m

Ottawa

Sat 6/6

11:15 a.m.-3:39 p.m.

1 stop4h 24m

C$ 633

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Fri 10/7

9:28 p.m.-2:33 p.m.

1 stop17h 05m

Ottawa

Tue 14/7

2:20 p.m.-12:15 p.m.

2 stops21h 55m

C$ 689

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sat 13/6

8:18 a.m.-10:03 a.m.

Nonstop1h 45m

Ottawa

Fri 19/6

2:52 p.m.-4:35 p.m.

Nonstop1h 43m

C$ 700

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/5

Showing 1-10 of 57 resultsSorted by cheapest first
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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.
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 20 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, June is the cheapest month in which you can book a flight from Washington, D.C. to Ottawa (average of C$ 183). Flying from Washington, D.C. to Ottawa in February is currently the most expensive (average of C$ 459). 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?

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 4 May 2026.

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 at noon, which can drop the price by up to 85% versus a flight in the afternoon.

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

Explore weekly flight availability from Washington, D.C. to Ottawa. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 4 May 2026.

The most flights from WAS to YOW are scheduled on a Monday (11 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (9 on average).

How much does it cost to fly round-trip 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 4 May 2026.
Get a feel of what it's like to fly with Porter 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
436 reviews
Check prices

Comfort

8.0

Crew

8.6

Boarding

8.2

Food

7.6

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Porter Airlines
8.0
Very good
436 reviews
Porter Airlines
8.0
Very good
436 reviews
Check prices

Comfort

8.0

Crew

8.6

Boarding

8.2

Food

7.6

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

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.?

    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. 0 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 10 inbound flights from Washington, D.C. per day.

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

    For as low as C$ 583, Air Canada can have you in Ottawa from Washington, D.C. in 1h 30m. The distance from Washington, D.C. to Ottawa is about 727 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    Consider Republic Airways (93%), Air Canada (81%) or United Airlines (76%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. to Ottawa.

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

    On average you can expect to pay C$ 319 for a flight from Washington, D.C. to Ottawa. The cheapest flight overall is C$ 310 while the most popular route, (Washington, D.C. Dulles Intl - Ottawa) is currently priced at C$ 481.

  • 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, June is the cheapest month in which you can book a flight from Washington, D.C. to Ottawa (average of C$ 183). Flying from Washington, D.C. to Ottawa in February is currently the most expensive (average of C$ 459). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Brockville
Wakefield
Pembroke
Smiths Falls

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

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