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Cheap flight tickets from Washington Dulles to Ottawa

Compare Washington Dulles to Ottawa flight deals

Find the cheapest month or even day of the year to fly to Ottawa

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Flight deals from Washington Dulles Airport to Ottawa

Looking for a cheap last-minute deal or the best return flight from Washington Dulles Airport to Ottawa? If you want to travel next month, return fares start from RM1,300. Find the lowest prices on one-way and return tickets right here.
Ottawa.RM1,300 per passenger.Departing Thu, 23 Apr, returning Thu, 30 Apr.Return flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Washington Dulles on Thu, 23 Apr, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departs from Ottawa International on Thu, 30 Apr, arriving in Washington Dulles.Price includes taxes and charges.From RM1,300, select.
Ottawa.RM1,543 per passenger.Departing Tue, 26 May, returning Thu, 11 Jun.Return flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Washington Dulles on Tue, 26 May, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departs from Ottawa International on Thu, 11 Jun, arriving in Washington Dulles.Price includes taxes and charges.From RM1,543, select.
Ottawa.RM1,543 per passenger.Departing Mon, 20 Apr, returning Mon, 4 May.Return flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Washington Dulles on Mon, 20 Apr, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departs from Ottawa International on Mon, 4 May, arriving in Washington Dulles.Price includes taxes and charges.From RM1,543, select.
Ottawa.RM1,556 per passenger.Departing Tue, 5 May, returning Sun, 24 May.Return flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Washington Dulles on Tue, 5 May, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departs from Ottawa International on Sun, 24 May, arriving in Washington Dulles.Price includes taxes and charges.From RM1,556, select.
Ottawa.RM1,561 per passenger.Departing Mon, 8 Jun, returning Thu, 11 Jun.Return flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Washington Dulles on Mon, 8 Jun, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departs from Ottawa International on Thu, 11 Jun, arriving in Washington Dulles.Price includes taxes and charges.From RM1,561, select.
Ottawa.RM1,566 per passenger.Departing Sun, 15 Nov, returning Wed, 25 Nov.Return flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Washington Dulles on Sun, 15 Nov, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departs from Ottawa International on Wed, 25 Nov, arriving in Washington Dulles.Price includes taxes and charges.From RM1,566, select.
Ottawa.RM1,738 per passenger.Departing Mon, 30 Mar, returning Tue, 7 Apr.Return flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Washington Dulles on Mon, 30 Mar, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departs from Ottawa International on Tue, 7 Apr, arriving in Washington Dulles.Price includes taxes and charges.From RM1,738, select.
Ottawa.RM1,751 per passenger.Departing Tue, 7 Jul, returning Sun, 26 Jul.Return flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Washington Dulles on Tue, 7 Jul, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departs from Ottawa International on Sun, 26 Jul, arriving in Washington Dulles.Price includes taxes and charges.From RM1,751, select.
Ottawa.RM1,751 per passenger.Departing Thu, 6 Aug, returning Fri, 7 Aug.Return flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Washington Dulles on Thu, 6 Aug, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departs from Ottawa International on Fri, 7 Aug, arriving in Washington Dulles.Price includes taxes and charges.From RM1,751, select.
Ottawa.RM1,754 per passenger.Departing Mon, 20 Jul, returning Fri, 7 Aug.Return flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Washington Dulles on Mon, 20 Jul, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departs from Ottawa International on Fri, 7 Aug, arriving in Washington Dulles.Price includes taxes and charges.From RM1,754, select.
Ottawa.RM1,755 per passenger.Departing Thu, 1 Oct, returning Fri, 16 Oct.Return flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Washington Dulles on Thu, 1 Oct, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departs from Ottawa International on Fri, 16 Oct, arriving in Washington Dulles.Price includes taxes and charges.From RM1,755, select.
Ottawa.RM1,809 per passenger.Departing Wed, 13 May, returning Sun, 17 May.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Wed, 13 May, arriving in Ottawa International.Inbound direct flight with United departs from Ottawa International on Sun, 17 May, arriving in Washington Dulles.Price includes taxes and charges.From RM1,809, select.
Ottawa.RM1,809 per passenger.Departing Sat, 11 Apr, returning Sun, 12 Apr.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Sat, 11 Apr, arriving in Ottawa International.Inbound direct flight with United departs from Ottawa International on Sun, 12 Apr, arriving in Washington Dulles.Price includes taxes and charges.From RM1,809, select.
Ottawa.RM1,813 per passenger.Departing Sun, 29 Mar, returning Thu, 2 Apr.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Sun, 29 Mar, arriving in Ottawa International.Inbound direct flight with United departs from Ottawa International on Thu, 2 Apr, arriving in Washington Dulles.Price includes taxes and charges.From RM1,813, select.
Ottawa.RM1,857 per passenger.Departing Fri, 24 Apr, returning Fri, 1 May.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Fri, 24 Apr, arriving in Ottawa International.Inbound direct flight with United departs from Ottawa International on Fri, 1 May, arriving in Washington Dulles.Price includes taxes and charges.From RM1,857, select.
Ottawa.RM1,894 per passenger.Departing Sun, 19 Jul, returning Wed, 22 Jul.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Sun, 19 Jul, arriving in Ottawa International.Inbound direct flight with United departs from Ottawa International on Wed, 22 Jul, arriving in Washington Dulles.Price includes taxes and charges.From RM1,894, select.

Find the cheapest month to fly from Washington Dulles to Ottawa

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington Dulles to Ottawa flights are currently cheapest in April.
Mar
from RM1,927
Apr
from RM1,300
May
from RM1,556
Jun
from RM1,561
Jul
from RM1,751
Aug
from RM1,751
Sep
Find prices
Oct
from RM1,755
Nov
from RM1,566
Dec
Find prices
Jan
Find prices
Feb
Find prices

Direct flights from Washington Dulles to Ottawa

Alternative Washington Dulles to Ottawa routes

Looking for the cheapest, fastest or easiest route from Washington Dulles to Ottawa? You could fly into the following airports instead.

Ottawa International

11km from central Ottawa
ClosestCheapest
from RM1,300
Search flights

Ottawa Gatineau

15km from central Ottawa
Search flights

Washington D.C. to Ottawa: Flight information

The things to know before you go.
Cheapest flight foundRM1,300
Cheapest month to flyApril
Average flight time1 hr, 42 mins
Most popular airlineUnited
Average flights per week178

Finding cheap flights from Washington Dulles to Ottawa: Frequently asked questions

There are 2 airports in Ottawa: Ottawa International and Ottawa Gatineau.
The best price we found for a return flight from Washington Dulles to Ottawa is RM1,300. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
1 hour and 42 minutes is the average flight time from Washington Dulles to Ottawa.
United, Republic Airways and GoJet Airlines fly direct from Washington Dulles to Ottawa.
As of March 2026, there are 89 flights per week flying from Washington Dulles to Ottawa.
The cheapest month to fly from Washington Dulles to Ottawa is usually April.
If you're flying from Washington Dulles Airport, the cheapest airport near Ottawa is Ottawa International – which is 11.2 km away from the centre of Ottawa. We've found flights into this airport from RM1,300.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to Ottawa on Thursday, 23 April 2026.
Yes – the average flight time is 1 hour and 42 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Ottawa but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Ottawa is around 40 days in advance, so don’t leave your flight to the last minute.
In March, the average temperature is usually around -3°C. July is typically the warmest month in Ottawa, when it usually averages around 25°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging -16°C. The rainiest month is June.
Currently, Porter Airlines and United offer the cheapest flight tickets to Ottawa.

Flying from Washington Dulles International Airport (IAD) to Ottawa: what you need to know

  • Expect to be travelling for 1 hour 40 minutes. That's the average duration of a direct flight from Washington Dulles International Airport to Ottawa.

  • Ottawa's timezone is UTC-4, which is the same as Washington DC (the location of Washington Dulles International Airport).

  • The most popular route is from Washington Dulles International Airport (IAD) to Ottawa/Macdonald-Cartier International Airport (YOW). Choose from 23 weekly services between these two airports. If you'd like to get on your way as soon as you can, the earliest flight from IAD to YOW is the 08:17 United Airlines service. If you prefer to travel later, the final departure is at 22:15 with United Airlines.

  • To avoid rushing for your IAD to Ottawa flight, allow plenty of time to check in and find your gate. Turning up two hours before international departures and an hour before domestic flights is the standard rule.

  • Heading off during a peak period like a bank holiday? Expect longer queues at security and check-in. To play it safe, arrive up to four hours before international flights and two hours ahead of domestic departures.

  • Begin your trip at IAD and fly straight to Ottawa/Macdonald-Cartier International Airport (YOW). That's where you can expect to touch down when searching for Washington Dulles International Airport to Ottawa tickets.

  • Keep an eye out for deals with United Airlines. This carrier operates direct flights from Washington Dulles International Airport to Ottawa.

  • We make it easy to book flight tickets from IAD to Ottawa with a stopover. To see all the options, deselect 'Direct flights only.' Next, pick a flight with a stop long enough to explore your chosen city. Top stopovers include:

    • Newark Liberty International Airport (EWR)

    • Pearson International Airport (YYZ)

    • Montreal-Pierre Elliott Trudeau International Airport (YUL)

  • Located around 40 kilometres from the centre of Washington DC, IAD can be reached in about 50 minutes by car, depending on traffic. Travelling on public transport takes roughly 1 hour 10 minutes.

  • Want a relaxed start to your holiday? Stay near IAD. Whether you have an early flight from Washington Dulles International Airport to Ottawa or just don't want to be rushed, these hotels are a convenient choice:

  • Of the departures from Washington Dulles International Airport, 74.39% touch down on time at their destination.

  • You'll find IAD at 1 Saarinen Circle.

How to find the cheapest flights from Washington Dulles International Airport (IAD) to Ottawa

  • RM663 is currently the lowest price for a one-way Washington Dulles International Airport to Ottawa flight. Return flight tickets start from RM1,300. These fares can change based on availability.

  • Lock in cheap flights from IAD to Ottawa by booking one month ahead. According to our research, that's the best time for bagging a bargain.

  • May is the best month for picking up an amazing deal on Washington Dulles International Airport to Ottawa tickets. If you want to travel during a different time of year, the 'Whole month' tool will give you the lowest prices for each month.

  • Cut down on the time spent looking for cheap flights from IAD to Ottawa by creating a Price Alert. You'll get an email or push notification on the app when a new low fare is offered.

  • Save money on your flight from Washington Dulles International Airport to Ottawa with the help of our filters. Select your preferred departure time, duration and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in Ottawa

Ottawa Gatineau Airport (YND)

  • The distance from Ottawa Gatineau Airport (YND) to central Ottawa is roughly 24 kilometres. It takes around 20 minutes to get to the centre driving.

  • If you're travelling on public transport, expect a journey time of around 1 hour 40 minutes.

  • Getting in late on a flight from Washington Dulles International Airport to Ottawa? Pick up your bags and head for the convenience of a nearby hotel. Two options close to YND are Meilleure Auberge and Lovely Room 4mins From Gatineau-Ottawa Airport.

  • Pick up an Ottawa Gatineau Airport rental car and discover parts of Ottawa that aren't in every guidebook. Find your ideal set of wheels with Hertz.

  • Reserve your vehicle from Ottawa Gatineau Airport at least a few weeks in advance of your flight from IAD to Ottawa. If you're going away during a peak period, book even earlier to secure the best deal.

Ottawa/Macdonald-Cartier International Airport (YOW)

  • After your flight from Washington Dulles International Airport to Ottawa has hit the tarmac, you can get to the city centre in around 20 minutes by car. Central Ottawa is roughly 13 kilometres from Ottawa/Macdonald-Cartier International Airport (YOW).

  • If you choose to travel on public transport, the journey will take you 45 minutes or so.

  • You'll find some great places to drop your things at near YOW. Tuck yourself in and get cosy after your IAD to Ottawa flight at one of these well-located options:

  • Routes Car Rentals, Alamo and Budget make collecting an Ottawa/Macdonald-Cartier International Airport rental car easy and quick. These trusted providers are located in or around the terminal and will have you on the road before long.

  • Get first dibs on the best options. Reserving your ride from YOW two weeks ahead of time often means better deals and a bigger choice of vehicles.

  • Ottawa/Macdonald-Cartier International Airport is located at 50 Airport Road.

Best time to go to Ottawa

  • Plan your trip to Ottawa in peak season if you like a lively atmosphere, but remember that hotel prices are usually higher. Alternatively, book your flights from Washington Dulles International Airport to Ottawa during low season when prices are cheaper and crowds are smaller.

  • The warmest month in Ottawa is July, with temperatures ranging between 13ºC (55ºF) and 27ºC (81ºF). Lock in your Washington Dulles International Airport to Ottawa flight ticket then if you enjoy this type of weather.

  • January sees average temperatures of between -19ºC (-2ºF) and -2ºC (28ºF). Search for a cheap ticket from IAD to Ottawa around that time if you want to travel when it's cooler.

More about Ottawa

  • Start your Ottawa trip off on the right foot by choosing the perfect place to stay. After booking your flight from Washington Dulles International Airport to Ottawa, browse our range of accommodation options including:

  • All great journeys should include a little sightseeing. Rideau Canal, Parliament Hill and National Gallery of Canada are attractions you won't want to skip in Ottawa.

Explore more of Canada

  • You've visited Ottawa, now it's time to discover more of Canada. Journey around 354 kilometres south-west to Toronto to check off its top attractions. From CN Tower to Royal Ontario Museum and Go Tours Canada - Distillery District, you've got a jam-packed schedule ahead.

  • Around 153 kilometres east of Ottawa, Montreal is another essential stop in Canada. Experience major highlights starting with Mount Royal Park, Montreal Botanical Garden and Saint Joseph's Oratory of Mount Royal.

Plan the rest of your trip from Washington D.C. to Ottawa

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.