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

For as low as $382, United Airlines can have you in Ottawa from Washington, D.C. in 11h 06m. Airlines will cover a distance of 449 mi.

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

Flying on Air Canada is currently your cheapest option to Ottawa, with prices starting at $187. Additional round-trip tickets that might be worth considering are offered by United Airlines and Porter Airlines, with the lowest prices starting at $201 and $206, respectively. You may be able to fly from Washington, D.C. to Ottawa for 61% less than the average price by searching for these airlines.

In terms of precipitation, rainfall in Ottawa ranges from 2.0 - 3.7 inches per month. June is typically the wettest month, when rainfall can reach 3.7 in. February is typically the driest time to visit Ottawa when rainfall is around 2.0 in.

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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 F).

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

When deciding which route to take from Washington, D.C. to Ottawa consider Washington, D.C. Dulles Intl - Ottawa, Washington, D.C. Reagan-National - Ottawa or Baltimore/Washington - Ottawa as they are the most popular.

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

While on average a flight from Washington, D.C. to Ottawa is generally $387, our data shows the cheapest flight currently is $128. When looking at the most popular route, (Washington, D.C. Dulles Intl - Ottawa), you can expect to pay $328 for that flight.

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

Consider GoJet (78%), Air Canada (77%) or United Airlines (75%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. to Ottawa.

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

When booking a flight from Washington, D.C. to Ottawa, you may want to consider flying on Air Canada, United Airlines or Porter Airlines as they are the most popular for this route.

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

Most trusted provider : When it comes to deals on Washington, D.C.-Ottawa 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 Washington, D.C.-Ottawa flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Located just 6.6 mi from the city center, Ottawa is the airport most travelers will use when flying to Ottawa from Washington, D.C.. Booking flights from Washington, D.C. to Ottawa (YOW) should be relatively easy as there are 10 daily inbound flights from Washington, D.C. from 3 different airlines.

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.

$145+ Cheap Flights from Washington, D.C. to Ottawa

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Cheapflights Tip: The best prices from Washington, D.C. to Ottawa are usually found in March or August, booked 67 days in advance, depart on a Thursday or Sunday and return on a Tuesday

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

Cheapest

Best

Last-minute

One-way

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 September 27, 2026.

Tue 10/138:40 pm -

1 stop4h 05m

Wed 10/146:00 am -

1 stop4h 20m

Deal found 9/22

$265

Tue 10/135:20 pm -

1 stop15h 57m

Wed 10/142:50 pm -

1 stop4h 10m

Deal found 9/22

$283

Mon 10/2611:20 am -

1 stop4h 49m

Mon 11/212:15 pm -

1 stop5h 28m

Deal found 9/25

$328

Tue 10/2011:25 am -

1 stop24h 02m

Tue 10/277:05 am -

1 stop13h 06m

Deal found 9/22

$333

Fri 10/1611:25 am -

1 stop6h 27m

Mon 10/1910:40 am -

1 stop4h 30m

Deal found 9/25

$343

Sat 10/1711:25 am -

1 stop7h 42m

Mon 10/1910:40 am -

1 stop4h 30m

Deal found 9/25

$351

Thu 10/2211:25 am -

1 stop8h 37m

Tue 10/277:05 am -

1 stop13h 06m

Deal found 9/26

$352

Thu 10/153:50 pm -

1 stop4h 12m

Mon 10/197:15 am -

2 stops33h 58m

Deal found 9/22

$353

Fri 10/1611:25 am -

1 stop6h 27m

Mon 10/197:15 am -

2 stops33h 58m

Deal found 9/22

$355

Fri 10/2311:25 am -

1 stop8h 37m

Tue 10/277:05 am -

1 stop13h 06m

Deal found 9/26

$357

Tue 10/1311:25 am -

1 stop6h 27m

Wed 10/142:50 pm -

1 stop4h 10m

Deal found 9/22

$359

Tue 11/101:56 pm -

1 stop27h 24m

Tue 11/177:05 am -

1 stop29h 56m

Deal found 9/26

$378

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 September 27, 2026.

Sat 10/176:10 am -

1 stop11h 06m

Sat 10/177:30 pm -

Nonstop1h 44m

Deal found 9/22

$382

Wed 10/2110:40 pm -

1 stop10h 31m

Thu 10/2211:15 am -

1 stop3h 42m

Deal found 9/22

$390

Sun 11/226:00 am -

1 stop5h 37m

Wed 11/2510:30 am -

Nonstop1h 49m

Deal found 9/23

$436

Sat 10/178:20 am -

1 stop5h 49m

Wed 10/216:00 am -

Nonstop1h 43m

Deal found 9/22

$414

Thu 10/88:30 am -

1 stop8h 46m

Sun 10/116:00 am -

1 stop4h 20m

Deal found 9/22

$421

Thu 10/812:35 pm -

Nonstop1h 42m

Sun 10/116:00 am -

Nonstop1h 43m

Deal found 9/22

$417

Fri 10/239:30 am -

1 stop12h 05m

Mon 10/269:00 am -

1 stop6h 24m

Deal found 9/22

$423

Thu 11/196:00 am -

1 stop5h 37m

Sun 11/2210:50 am -

1 stop4h 34m

Deal found 9/26

$477

Thu 10/86:10 am -

2 stops11h 25m

Sat 10/315:35 am -

2 stops11h 16m

Deal found 9/23

$1,082

Tue 10/2010:10 pm -

Nonstop1h 44m

Tue 10/279:45 am -

Nonstop2h 03m

Deal found 9/26

$460

Thu 10/299:05 am -

1 stop4h 06m

Sun 11/15:45 am -

1 stop4h 44m

Deal found 9/26

$472

Wed 10/2110:10 pm -

Nonstop1h 44m

Wed 10/289:45 am -

Nonstop2h 03m

Deal found 9/26

$460

Sat 10/2411:45 am -

1 stop4h 53m

Mon 10/269:00 am -

1 stop6h 24m

Deal found 9/25

$478

Fri 10/306:25 am -

1 stop7h 44m

Sun 11/14:46 pm -

1 stop16h 09m

Deal found 9/23

$464

Fri 10/239:30 am -

1 stop12h 05m

Fri 10/309:00 am -

1 stop6h 24m

Deal found 9/23

$478

Wed 10/213:30 pm -

1 stop6h 05m

Wed 10/286:00 am -

1 stop4h 24m

Deal found 9/23

$464

Thu 10/151:15 pm -

1 stop8h 20m

Mon 10/195:50 pm -

1 stop4h 00m

Deal found 9/24

$478

Thu 10/158:15 am -

Nonstop1h 41m

Sun 10/186:00 am -

Nonstop1h 43m

Deal found 9/23

$468

Fri 10/308:30 am -

1 stop5h 39m

Sun 11/110:30 am -

Nonstop1h 49m

Deal found 9/23

$513

Tue 12/85:37 pm -

Nonstop1h 50m

Thu 12/102:00 pm -

Nonstop1h 53m

Deal found 9/25

$469

Sun 11/86:10 am -

1 stop7h 01m

Sun 11/159:45 am -

Nonstop2h 03m

Deal found 9/24

$470

Sun 11/89:12 pm -

2 stops20h 14m

Sun 11/153:25 pm -

2 stops17h 56m

Deal found 9/24

$568

Thu 10/229:12 pm -

2 stops19h 08m

Thu 10/293:10 pm -

2 stops18h 11m

Deal found 9/24

$580

Sat 10/1012:00 pm -

1 stop5h 16m

Sat 10/316:00 am -

1 stop4h 24m

Deal found 9/23

$543

Sat 10/248:00 am -

1 stop7h 15m

Tue 10/277:05 am -

1 stop7h 45m

Deal found 9/25

$822

Mon 12/146:10 am -

1 stop7h 59m

Sun 12/274:42 pm -

1 stop8h 06m

Deal found 9/26

$904

Wed 10/216:29 am -

1 stop7h 30m

Wed 10/286:15 am -

1 stop15h 27m

Deal found 9/23

$914

Fri 10/169:09 am -

1 stop12h 26m

Sun 10/1810:37 am -

1 stop12h 22m

Deal found 9/22

$945

Wed 10/2111:55 am -

1 stop5h 21m

Fri 10/235:20 pm -

1 stop5h 39m

Deal found 9/22

$945

Sat 10/179:09 am -

1 stop8h 07m

Mon 10/196:25 am -

1 stop11h 48m

Deal found 9/25

$967

Last-minute flights from Washington, D.C. to Ottawa
Discover last-minute flight deals from Washington, D.C. to Ottawa. Data last updated September 27, 2026 and is based on user searches.

Tue 10/611:25 am -

1 stop6h 27m

Thu 10/1510:40 am -

1 stop4h 30m

Deal found 9/22

$387

Tue 10/68:15 am -

Nonstop1h 41m

Thu 10/156:00 am -

Nonstop1h 43m

Deal found 9/22

$404

Tue 10/68:40 pm -

1 stop4h 55m

Wed 10/76:00 am -

1 stop4h 20m

Deal found 9/23

$435

Thu 10/88:30 am -

1 stop8h 46m

Sun 10/116:00 am -

1 stop4h 20m

Deal found 9/22

$421

Tue 10/138:40 pm -

1 stop4h 05m

Wed 10/146:00 am -

1 stop4h 20m

Deal found 9/22

$265

Thu 10/156:30 am -

1 stop7h 29m

Fri 10/2312:00 pm -

1 stop6h 15m

Deal found 9/22

$427

Wed 10/215:40 am -

2 stops11h 43m

Wed 10/287:05 am -

1 stop29h 56m

Deal found 9/23

$400

Thu 10/226:00 am -

1 stop4h 21m

Sat 10/246:00 pm -

1 stop4h 34m

Deal found 9/22

$426

Fri 10/239:30 am -

1 stop12h 05m

Mon 10/269:00 am -

1 stop6h 24m

Deal found 9/22

$423

Mon 10/261:56 pm -

1 stop27h 24m

Mon 11/27:05 am -

1 stop29h 56m

Deal found 9/25

$384

Tue 10/271:56 pm -

1 stop27h 24m

Fri 10/307:00 am -

2 stops10h 33m

Deal found 9/25

$437

Fri 10/301:56 pm -

1 stop9h 36m

Mon 11/27:05 am -

1 stop29h 56m

Deal found 9/26

$403

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 September 27, 2026.

Thu 10/2911:20 am -

1 stop4h 49m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/25

$145

Fri 10/233:50 pm -

1 stop4h 12m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/23

$146

Thu 10/2211:25 am -

1 stop6h 27m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/24

$147

Sat 11/711:20 am -

1 stop4h 49m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/25

$158

Mon 12/2811:20 am -

1 stop5h 04m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/24

$162

Mon 12/711:20 am -

1 stop4h 49m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/24

$164

Wed 12/912:06 pm -

3 stops34h 09m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/26

$166

Sat 10/1711:25 am -

1 stop7h 42m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/24

$169

Wed 10/281:56 pm -

1 stop27h 24m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/24

$171

Wed 12/99:35 am -

1 stop13h 35m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/26

$172

Thu 12/311:20 am -

1 stop4h 49m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/26

$173

Fri 10/3011:20 am -

1 stop4h 49m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/25

$174

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

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$265 (Trip.com)
One-way from	$145 (Trip.com)
Popular in	December
Cheapest in	March
Average price	$434
Good round-trip deal	$426 or less
Good one-way deal	$167 or less

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

Search Deals

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

Search Deals

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

Search Deals

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

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($49 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Price to beat on a round-trip flight from 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

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

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

IADYOW

Washington, D.C. Dulles Intl

Wed 12/9

12:06 pm-12:07 am

2 stops36h 01m

Ottawa

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$158

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Thu 10/8

12:35 pm-2:17 pm

Nonstop1h 42m

Ottawa

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$176

Washington, D.C.Ottawa

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

DCAYOW

Washington, D.C. Reagan-National

Fri 11/20

6:00 am-11:37 am

1 stop5h 37m

Ottawa

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$186

Washington, D.C.Ottawa

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

DCAYOW

Washington, D.C. Reagan-National

Fri 10/9

8:20 pm-9:11 am

1 stop12h 51m

Ottawa

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$186

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Fri 11/13

11:20 am-4:09 pm

1 stop4h 49m

Ottawa

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$187

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Thu 12/3

1:19 pm-3:07 pm

Nonstop1h 48m

Ottawa

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$193

Washington, D.C.Ottawa

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

DCAYOW

Washington, D.C. Reagan-National

Sun 10/18

8:30 am-9:35 pm

1 stop13h 05m

Ottawa

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$203

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Sun 10/18

8:15 am-9:56 am

Nonstop1h 41m

Ottawa

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$204

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Sat 10/17

8:15 am-9:56 am

Nonstop1h 41m

Ottawa

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$204

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Fri 10/30

5:37 pm-7:27 pm

Nonstop1h 50m

Ottawa

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$204

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/26

Showing 1-10 of 60 resultsSorted by cheapest first

...

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

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

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	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 Washington, D.C.-Ottawa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Ottawa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Ottawa flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Washington, D.C.-Ottawa 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 Washington, D.C.-Ottawa 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 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.

WAS-YOW

DCA-YOW

BWI-YOW

IAD-YOW

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

WAS-YOW

DCA-YOW

BWI-YOW

IAD-YOW

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

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to Ottawa (average of $434). Flying from Washington, D.C. to Ottawa in February is currently the most expensive (average of $589). 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?

It’s optimal to fly from Washington, D.C. to Ottawa in the morning. By choosing this option you can save up to 50% on the cost of your flight, compared to a flight in the evening.

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

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?

Airfare is below average for this route at the moment.

Washington, D.C. to Ottawa flights typically cost between $406 and $462 in October.
The cheapest round-trip price found within the last 5 days was $265 on Air Canada (Oct 13-Oct 14).

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 76 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.

Reviews of airlines servicing Ottawa

Peruse reviews from past customers who have flown with Porter Airlines,United Airlines, andAir Canada from Washington, D.C. to Ottawa to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Porter Airlines

8.0

Very good

463 reviews

Reviews

1 / 20

6.0

Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats

Porter Airlines

8.0

Very good

463 reviews

Porter Airlines

8.0

Very good

463 reviews

Reviews

1 / 20

6.0

Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats

United Airlines

7.4

Good

10,244 reviews

Porter Airlines

8.0

Very good

463 reviews

Reviews

1 / 20

6.0

Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats

Air Canada

7.1

Good

11,696 reviews

Porter Airlines

8.0

Very good

463 reviews

Reviews

1 / 20

6.0

Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats

Related info for your journey

What airport do you fly into for flights to Ottawa from Washington, D.C.?
Located just 6.6 mi from the city center, Ottawa is the airport most travelers will use when flying to Ottawa from Washington, D.C.. Booking flights from Washington, D.C. to Ottawa (YOW) should be relatively easy as there are 10 daily inbound flights from Washington, D.C. from 3 different airlines.
How long is the flight from Washington, D.C. to Ottawa?
For as low as $382, United Airlines can have you in Ottawa from Washington, D.C. in 11h 06m. Airlines will cover a distance of 449 mi.
What are the cheapest airlines flying from Washington, D.C. to Ottawa round-trip?
Flying on Air Canada is currently your cheapest option to Ottawa, with prices starting at $187. Additional round-trip tickets that might be worth considering are offered by United Airlines and Porter Airlines, with the lowest prices starting at $201 and $206, respectively. You may be able to fly from Washington, D.C. to Ottawa for 61% less than the average price by searching for these airlines.
What are the most popular routes from Washington, D.C. to Ottawa?
When deciding which route to take from Washington, D.C. to Ottawa consider Washington, D.C. Dulles Intl - Ottawa, Washington, D.C. Reagan-National - Ottawa or Baltimore/Washington - Ottawa as they are the most popular.
What are the most reliable airlines from Washington, D.C. to Ottawa?
Consider GoJet (78%), Air Canada (77%) or United Airlines (75%) 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?
While on average a flight from Washington, D.C. to Ottawa is generally $387, our data shows the cheapest flight currently is $128. When looking at the most popular route, (Washington, D.C. Dulles Intl - Ottawa), you can expect to pay $328 for that flight.
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, September is the cheapest month in which you can book a flight from Washington, D.C. to Ottawa (average of $434). Flying from Washington, D.C. to Ottawa in February is currently the most expensive (average of $589). 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.

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

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$187	Average$504	FlexibilityNo cancel fee	On-time67%
United Airlines	Cheapest$201	Average$540	FlexibilityNo cancel fee	On-time69%
Porter Airlines	Cheapest$206	Average$432	FlexibilityNo cancel fee	On-time52%

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$145+ Cheap flights from Washington, D.C. (WAS) to Ottawa (YOW)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/29. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from 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 September 27, 2026.

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 September 27, 2026.

Best flights from Washington, D.C. to OttawaDiscover 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 September 27, 2026.

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 September 27, 2026.

Last-minute flights from Washington, D.C. to OttawaDiscover last-minute flight deals from Washington, D.C. to Ottawa. Data last updated September 27, 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to Ottawa. Data last updated September 27, 2026 and is based on user searches.

One-way flights from Washington, D.C. to OttawaSearch for one-way flight options from Washington, D.C. to Ottawa. Find affordable one-way fares based on user searches. Data last updated September 27, 2026.

Search for one-way flight options from Washington, D.C. to Ottawa. Find affordable one-way fares based on user searches. Data last updated September 27, 2026.

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

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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 Washington, D.C. to Ottawa in September.

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.

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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 September 27, 2026.

It’s optimal to fly from Washington, D.C. to Ottawa in the morning. By choosing this option you can save up to 50% on the cost of your flight, compared to a flight in the evening.

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

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?

Airfare is below average for this route at the moment.

Washington, D.C. to Ottawa flights typically cost between $406 and $462 in October.The cheapest round-trip price found within the last 5 days was $265 on Air Canada (Oct 13-Oct 14).

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 76 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.

Reviews of airlines servicing Ottawa

Peruse reviews from past customers who have flown with Porter Airlines,United Airlines, andAir Canada from Washington, D.C. to Ottawa to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

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

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

What are the cheapest flights 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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Washington, D.C. and Ottawa flights

Browse other Washington, D.C. and Ottawa flight options. Last updated on September 27, 2026.

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Washington, D.C. to Ottawa flights

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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 September 27, 2026.

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 September 27, 2026.

Last-minute flights from Washington, D.C. to Ottawa
Discover last-minute flight deals from Washington, D.C. to Ottawa. Data last updated September 27, 2026 and is based on user searches.

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 September 27, 2026.

Washington, D.C. to Ottawa flights typically cost between $406 and $462 in October.
The cheapest round-trip price found within the last 5 days was $265 on Air Canada (Oct 13-Oct 14).