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Cheap flights from Washington, D.C. to Ottawa International

Compare Washington, D.C. to Ottawa International flight deals

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Flight deals from Washington, D.C. to Ottawa International

Looking for a cheap last-minute deal or the best round-trip flight from Washington, D.C. to Ottawa International? Find the lowest prices on one-way and round-trip tickets right here.
Ottawa.C$376 per passenger.Departing Wed, Oct 15, returning Tue, Oct 21.Round-trip flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departing from Washington Dulles on Wed, Oct 15, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departing from Ottawa International on Tue, Oct 21, arriving in Washington Dulles.Price includes taxes and charges.From C$376, select.
Ottawa.C$397 per passenger.Departing Fri, Jul 18, returning Fri, Jul 25.Round-trip flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departing from Washington Dulles on Fri, Jul 18, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departing from Ottawa International on Fri, Jul 25, arriving in Washington Dulles.Price includes taxes and charges.From C$397, select.
Ottawa.C$423 per passenger.Departing Sun, Aug 3, returning Fri, Aug 15.Round-trip flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departing from Washington Dulles on Sun, Aug 3, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departing from Ottawa International on Fri, Aug 15, arriving in Washington Dulles.Price includes taxes and charges.From C$423, select.
Ottawa.C$424 per passenger.Departing Wed, Jul 16, returning Tue, Aug 5.Round-trip flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departing from Washington Dulles on Wed, Jul 16, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departing from Ottawa International on Tue, Aug 5, arriving in Washington Dulles.Price includes taxes and charges.From C$424, select.
Ottawa.C$425 per passenger.Departing Mon, Aug 25, returning Fri, Sep 12.Round-trip flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departing from Washington Dulles on Mon, Aug 25, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departing from Ottawa International on Fri, Sep 12, arriving in Washington Dulles.Price includes taxes and charges.From C$425, select.
Ottawa.C$462 per passenger.Departing Sun, Sep 14, returning Wed, Sep 17.Round-trip flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departing from Washington Dulles on Sun, Sep 14, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departing from Ottawa International on Wed, Sep 17, arriving in Washington Dulles.Price includes taxes and charges.From C$462, select.
Ottawa.C$471 per passenger.Departing Mon, Jun 30, returning Thu, Jul 17.Round-trip flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departing from Washington Dulles on Mon, Jun 30, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departing from Ottawa International on Thu, Jul 17, arriving in Washington Dulles.Price includes taxes and charges.From C$471, select.
Ottawa.C$491 per passenger.Departing Sun, Sep 21, returning Tue, Oct 7.Round-trip flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departing from Washington Dulles on Sun, Sep 21, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departing from Ottawa International on Tue, Oct 7, arriving in Washington Dulles.Price includes taxes and charges.From C$491, select.

Find the cheapest month to fly from Washington, D.C. to Ottawa International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington, D.C. to Ottawa International flights are currently cheapest in October.
Jun
from C$578
Jul
from C$397
Aug
from C$423
Sep
from C$462
Oct
from C$376
Nov
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Dec
from C$686
Jan
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Feb
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Mar
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Apr
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May
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Direct flights from Washington, D.C. to Ottawa International

Washington, D.C. to Ottawa International: Alternative routes

Compare routes from Washington, D.C. to Ottawa below. You may find an airport to fly into that's cheaper, faster, or easier than Ottawa International.

Washington, D.C. to Ottawa: Flight information

The things to know before you go.
Cheapest flight foundC$376
Cheapest month to flyOctober
Average flight time1 hr, 38 mins
Most popular airlineUnited
Average flights per week111

Finding cheap flights from Washington, D.C. to Ottawa International: Frequently asked questions

The best price we found for a round-trip flight from Washington, D.C. to Ottawa International is C$376. 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 37 minutes is the average flight time from Washington, D.C. to Ottawa International.
United, Air Canada and GoJet Airlines fly direct from Washington, D.C. to Ottawa International.
There are 111 flights per week flying from Washington, D.C. to Ottawa International, as of June 2025.
The cheapest month to fly from Washington, D.C. to Ottawa International is usually June 2025.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Washington, D.C. to Ottawa International Airport on Wednesday, October 15, 2025.
Yes – the average flight time is 1 hour and 37 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 International 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.

Flying from Washington DC to Ottawa/Macdonald-Cartier International Airport (YOW): What you need to know

  • Organizing your flight from Washington DC to Ottawa/Macdonald-Cartier International Airport (YOW) begins with finding the most convenient airport to kick off your journey from. Ronald Reagan National Airport (DCA), Washington Dulles International Airport (IAD) and Baltimore/Wash International Thurgood Marshall Airport (BWI) are your options in Washington DC.

  • The average time for a direct Washington DC to Ottawa/Macdonald-Cartier International Airport flight is 1 hour 35 minutes.

  • Washington DC and Ottawa (where Ottawa/Macdonald-Cartier International Airport is located) share the UTC-4 timezone. That means you won't need to change your watch once you land.

  • Ronald Reagan National Airport (DCA) to Ottawa/Macdonald-Cartier International Airport (YOW) is the most popular route, with 7 direct services each week. Get from DCA to YOW on Air Canada's 12:55pm departure.

  • Your flight from Washington DC to YOW won't wait if you're late, so don't forget to check in on time. Arrive up to one hour in advance for domestic flights and two hours ahead for international travel.

  • Peak season means busier airports, so aim to get there even earlier. Give yourself at least two hours before a domestic flight and four hours for an international journey to stick to your schedule.

Airports in Washington DC

Ronald Reagan National Airport (DCA)

  • You can hop on a direct flight from Washington DC to Ottawa/Macdonald-Cartier International Airport (YOW) leaving from Ronald Reagan National Airport (DCA).

  • You can book a direct flight from Washington DC to Ottawa/Macdonald-Cartier International Airport with Air Canada. This popular carrier offers services from DCA.

  • The airline most travellers choose when flying between DCA and YOW is Air Canada.

  • The carrier with the most reliable on-time performance on this route is Air Canada. Its services land as planned 70.91% of the time.

  • DCA is about 8 kilometres from central Washington DC. If you're driving, ride-sharing or catching a cab from the centre, it'll take 15 minutes or so to get there, depending on traffic conditions. If you're planning to take public transport, expect the trip time to be around 45 minutes.

  • Want a stress-free start to your trip? Stay near Ronald Reagan National Airport. Whether you have an early flight from Washington DC to Ottawa/Macdonald-Cartier International Airport or just don't like being rushed, these hotels have you covered:

  • When it comes to Ronald Reagan National Airport's on-time performance, 76.44% of flights meet their scheduled arrival time.

  • You'll find DCA at 1 Aviation Circle.

Washington Dulles International Airport (IAD)

  • Looking to fly out of Washington Dulles International Airport (IAD)? Direct Washington DC to Ottawa/Macdonald-Cartier International Airport (YOW) flight tickets are available from here.

  • United Airlines offers direct flights from Washington DC to YOW departing from IAD. Book your favourite window (or aisle) seat and arrive at your destination in a single stretch.

  • United Airlines is the most popular choice for travellers flying from IAD to YOW.

  • United Airlines is the most punctual carrier flying from Washington Dulles International Airport to Ottawa/Macdonald-Cartier International Airport, with 73.1% of its services arriving as planned.

  • You can get to IAD from the centre of Washington DC in approximately 50 minutes by car (depending on traffic conditions). The ride on public transport takes roughly 1 hour 10 minutes to cover the 56 kilometres or so.

  • Taking off bright and early? You might like to check in to one of these accommodation options near Washington Dulles International Airport the day before your Washington DC to YOW flight:

  • 74.39% of flights taking off from Washington Dulles International Airport arrive within the expected time frame.

  • The address for IAD is 1 Saarinen Circle.

Baltimore/Wash International Thurgood Marshall Airport (BWI)

  • Book a flight ticket from Washington DC to Ottawa/Macdonald-Cartier International Airport (YOW) departing from Baltimore/Wash International Thurgood Marshall Airport (BWI) with one or more stops. Popular stopovers between BWI and YOW are:

    • O'Hare International Airport (ORD)

    • Orlando International Airport (MCO)

    • Tampa International Airport (TPA)

  • The journey time to BWI from central Washington DC is around 1 hour 30 minutes by public transport. If you prefer to travel by car, it'll take you about 50 minutes to cover the 48 kilometres or so.

  • Sleep a little longer, move a little slower, and still make your Washington DC to Ottawa/Macdonald-Cartier International Airport flight with time to spare. These hotels near Baltimore/Wash International Thurgood Marshall Airport make departure day effortless if you're jetting off early:

  • The on-time performance rating of BWI is 77.13%. In simpler terms, that's how frequently flights departing this airport arrive within the expected time frame.

About Ottawa/Macdonald-Cartier International Airport (YOW)

Getting from Ottawa/Macdonald-Cartier International Airport (YOW) to central Ottawa

  • Ottawa/Macdonald-Cartier International Airport to the centre of Ottawa is roughly 11 kilometres. If you're renting a car or getting a cab, plan ahead to make your trip as smooth as possible. Journey times vary depending on traffic conditions and the time of day.

  • It takes around 45 minutes if you're travelling on public transport.

How to find the cheapest flights from Washington DC to Ottawa/Macdonald-Cartier International Airport (YOW)

  • Currently, C$171 is the lowest price we've found for a one-way ticket from Washington DC to Ottawa/Macdonald-Cartier International Airport. The cheapest price for a return flight is C$376. Remember fares can change due to demand at the time of booking.

  • Don't wait until the last moment. You're more likely to walk away with cheap flights from Washington DC to YOW if you book early. Airlines often offer some amazing early bird deals.

  • Cheap Washington DC to Ottawa/Macdonald-Cartier International Airport tickets are easier to find when your travel dates are flexible. Use the 'Whole month' search tool to compare fares throughout the month and then choose the cheapest day.

  • Finding a cheap flight ticket from Washington DC to YOW is easy with Price Alerts. All you need to do is create one of these automatic alerts and we'll notify you as soon as there's a better deal.

  • Filters make it easier to dig up a deal for your flight from Washington DC to Ottawa/Macdonald-Cartier International Airport. Choose the departure times, airlines and number of stops that match your plans. Then sort the results by 'Cheapest' to find the most affordable option fast.

The best time to fly from Washington DC to Ottawa/Macdonald-Cartier International Airport (YOW)

  • August is the most popular month for flights from Washington DC to Ottawa/Macdonald-Cartier International Airport (YOW). Visit Ottawa in February for a more laid-back experience.

  • The warmest month in Ottawa is July, with temperatures ranging between 13ºC (55ºF) and 27ºC (81ºF). Lock in your Washington DC to YOW flight ticket then if that's your ideal forecast.

  • January has temperatures of between -19ºC (-2ºF) and -2ºC (28ºF). Look for cheap tickets from Washington DC to Ottawa/Macdonald-Cartier International Airport around that time if you want to travel when it's cooler.

More about Ottawa

  • After booking your flight from Washington DC to Ottawa/Macdonald-Cartier International Airport, find a hotel that's got location and comfort covered. Make one of these options your base for exploring Ottawa:

  • Rideau Canal National Historic Site and Parliament Hill are a couple of big attractions to put on your Ottawa travel itinerary. Keep the adventure rolling by checking out Rideau Canal, Locks 1 - 8 - Ottawa.

Explore more of Canada

  • Ottawa has loads to offer, but there are so many other parts of Canada you'll want to see. About 153 kilometres east of Ottawa, a trip to Montreal will fill your itinerary to the brim. Start with popular sights like Cirque du Soleil - KURIOS, Montreal Botanical Garden and Saint Joseph's Oratory of Mount Royal.

  • If you're interested in discovering another major destination in Canada, head for Laval, about 153 kilometres east of Ottawa. Le Cosmodôme, SkyVenture Montréal and illumi Laval are key highlights.

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.