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Cheap Flights from Ottawa to Washington D.C.

Compare Ottawa to Washington D.C. flight deals

Find the cheapest month or even day of the year to fly to Washington D.C.

Book the best Washington D.C. fare with no extra fees

Flight deals from Ottawa to Washington D.C.

Looking for a cheap last-minute deal or the best return flight from Ottawa to Washington D.C.? Find the lowest prices on one-way and return tickets right here.
Washington D.C..R 2,577 per passenger.Departing Sat, 6 Sep.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Ottawa International on Sat, 6 Sep, arriving in Washington Dulles.Price includes taxes and charges.From R 2,577, select.
Washington D.C..R 2,761 per passenger.Departing Mon, 29 Sep.One-way flight with Air Canada.Outbound direct flight with Air Canada departs from Ottawa International on Mon, 29 Sep, arriving in Washington Ronald Reagan.Price includes taxes and charges.From R 2,761, select.
Washington D.C..R 2,855 per passenger.Departing Thu, 7 Aug.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Ottawa International on Thu, 7 Aug, arriving in Washington Dulles.Price includes taxes and charges.From R 2,855, select.
Washington D.C..R 2,978 per passenger.Departing Tue, 9 Dec.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Ottawa International on Tue, 9 Dec, arriving in Washington Dulles.Price includes taxes and charges.From R 2,978, select.
Washington D.C..R 2,983 per passenger.Departing Fri, 28 Nov.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Ottawa International on Fri, 28 Nov, arriving in Washington Dulles.Price includes taxes and charges.From R 2,983, select.
Washington D.C..R 3,176 per passenger.Departing Wed, 20 Aug.One-way flight with United.Outbound direct flight with United departs from Ottawa International on Wed, 20 Aug, arriving in Washington Dulles.Price includes taxes and charges.From R 3,176, select.
Washington D.C..R 3,278 per passenger.Departing Mon, 27 Oct.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Ottawa International on Mon, 27 Oct, arriving in Washington Dulles.Price includes taxes and charges.From R 3,278, select.
Washington D.C..R 3,336 per passenger.Departing Tue, 6 Jan.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Ottawa International on Tue, 6 Jan, arriving in Washington Dulles.Price includes taxes and charges.From R 3,336, select.

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

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ottawa to Washington D.C. flights are currently cheapest in September.
Jul
from R 3,588
Aug
from R 2,855
Sep
from R 2,577
Oct
from R 3,278
Nov
from R 2,983
Dec
from R 2,978
Jan
from R 3,336
Feb
from R 6,420
Mar
from R 5,165
Apr
Find prices
May
Find prices
Jun
from R 6,570

Direct flights from Ottawa to Washington D.C.

Alternative Ottawa to Washington D.C. routes

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

Ottawa to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight foundR 2,570
Cheapest month to flySeptember
Average flight time1 hr, 44 mins
Most popular airlineUnited
Average flights per week64

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

There are 5 airports in Washington D.C.: Washington Ronald Reagan, Camp Springs Andrews AFB, Washington Dulles, Baltimore Washington International, and Manassas.
The best price we found for a return flight from Ottawa to Washington D.C. is R 4,364. 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 44 minutes is the average flight time from Ottawa to Washington D.C..
United, Air Canada and GoJet Airlines fly direct from Ottawa to Washington D.C..
As of July 2025, there are 64 flights per week flying from Ottawa to Washington D.C..
The cheapest month to fly from Ottawa to Washington D.C. is usually September.
If you're flying from Ottawa, the cheapest airport near Washington D.C. is Washington Dulles – which is 36.5 km away from the centre of Washington D.C.. We've found flights into this airport from R 4,364.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Ottawa to Washington D.C. on Thursday, 4 September 2025.
Yes – the average flight time is 1 hour and 44 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 Washington D.C. 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 Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.
In July, the average temperature is usually around 25°C. July is typically the warmest month in Washington D.C., when it usually averages around 31°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging -4°C. The rainiest month is September.
The cheapest airline that flies to Washington D.C. is Porter Airlines. And the cheapest airline that flies to Camp Springs Andrews AFB Airport is Air Canada.

Flying from Ottawa to Washington DC: what you need to know

  • Planning your trip begins with working out where you'll fly out of in Ottawa. Ottawa/Macdonald-Cartier International Airport (YOW) is the city's main base, so explore your options for reserving a flight from Ottawa to Washington DC departing from here.

  • When jetting into Washington DC, step off the plane at Ronald Reagan National Airport (DCA) or Washington Dulles International Airport (IAD). Baltimore/Wash International Thurgood Marshall Airport (BWI) is another gateway to this city.

  • The average duration of a direct Ottawa to Washington DC flight is 1 hour 40 minutes.

  • To ensure you get on your Ottawa to Washington DC flight, leave enough time for things like check-in and baggage drop. Arriving two hours ahead of international departures and an hour before domestic flights is the general travel rule.

  • If you're heading away during a bank holiday or other peak period, give yourself extra time. A good rule is two hours ahead of domestic flights and up to four hours before international departures. Queues at security and check-in will be longer.

How to find the cheapest flights from Ottawa to Washington DC

  • At the moment, R 2,570 is the lowest price we've seen for a one-way ticket from Ottawa to Washington DC. The cheapest price for a return flight is R 4,364. Remember fares may change due to demand at the time of booking.

  • To secure cheap Ottawa to Washington DC flights, book your journey two months before your departure date.

  • The best month for picking up cheap plane tickets from Ottawa to Washington DC is May. Use the 'Whole month' tool to compare prices, then select the dates offering the lowest fares.

  • You don't need to check back in every day to find out if fares have dropped when you set up a Price Alert. We'll notify you when a better deal is available on cheap flights from Ottawa to Washington DC.

  • Pick your preferred departure and arrival times, airlines and number of stops by using the filters. Or sort your Ottawa to Washington DC flight results by 'Cheapest,' 'Best' or 'Fastest.'

Flying from Ottawa

Ottawa/Macdonald-Cartier International Airport (YOW)

  • Depart from Ottawa/Macdonald-Cartier International Airport (YOW) and fly straight through to Ronald Reagan National Airport (DCA) or Washington Dulles International Airport (IAD). If you're looking for a direct flight from Ottawa to Washington DC out of YOW, those are your landing options.

  • United Airlines is a well-known airline that offers direct Ottawa to Washington DC plane tickets leaving from YOW.

  • Located around 11 kilometres from central Ottawa, YOW can be reached in about 20 minutes by car, depending on traffic. The journey by public transport takes roughly 45 minutes.

  • Have an early flight from Ottawa to Washington DC? Avoid the hassle of rushing to the terminal (and sneak in some extra snooze time) by choosing one of these hotels near Ottawa/Macdonald-Cartier International Airport:

  • 58.21% of flights leaving from Ottawa/Macdonald-Cartier International Airport land at their destination on schedule.

  • You'll find YOW at 50 Airport Road.

Arriving in Washington DC

Ronald Reagan National Airport (DCA)

  • Ronald Reagan National Airport (DCA) to central Washington DC takes around 15 minutes to reach by car. The centre is roughly 6 kilometres away.

  • Getting there on public transport takes about 45 minutes.

  • If you're coming in on a late flight from Ottawa to Washington DC, few things beat the convenience of staying close to the terminal. Grab your suitcases from the carousel and then be showered and sleeping soon after at one of these hotels near DCA:

  • Hit the road running by picking up a Ronald Reagan National Airport rental car. Grab your wheels from Thrifty, Sixt or Dollar and explore beyond Washington DC's main sights.

  • Get the best deal by reserving your ride from Ronald Reagan National Airport around four weeks ahead of your trip.

  • DCA is situated at 1 Aviation Circle.

Washington Dulles International Airport (IAD)

  • After your flight from Ottawa to Washington DC has arrived, you can reach the city centre in around 50 minutes by car. Central Washington DC is approximately 40 kilometres from Washington Dulles International Airport (IAD).

  • You can expect the trip to take about 1 hour 10 minutes on public transport.

  • You'll find some great places ready to welcome you near IAD. Unwind after your Ottawa to Washington DC flight at any of these perfectly located options:

  • Dollar, Thrifty and Sixt make picking up a Washington Dulles International Airport rental car quick and easy. These companies are located around or in the terminal and will get you on your way in no time.

  • Call dibs on the best options. Reserving your ride from IAD one week in advance often means better deals and a greater range of vehicles.

  • You'll find Washington Dulles International Airport at 1 Saarinen Circle.

Baltimore/Wash International Thurgood Marshall Airport (BWI)

  • Baltimore/Wash International Thurgood Marshall Airport (BWI) is roughly 40 kilometres from the centre of Washington DC. It'll take you about 50 minutes to get to the city centre by ride-share or cab once you've stepped off your flight from Ottawa to Washington DC.

  • The journey will take you roughly 1 hour 30 minutes when travelling by public transport.

  • Stay at a hotel near BWI and get from baggage claim to your bed in a snap. Whether you have a late Ottawa to Washington DC flight or just want a stress-free arrival, these accommodation options bring comfort closer to you:

  • Take control of the next chapter of your journey by picking up a Baltimore/Wash International Thurgood Marshall Airport rental car. Dollar, Thrifty and Budget make getting on the road effortless.

  • Around two weeks before your flight from Ottawa to Washington DC is the ideal time to book your ride from BWI. You're more likely to find a cheaper rate or pick up some early bird promotions.

Best time to go to Washington DC

  • It's time to figure out your dates for your flight from Ottawa to Washington DC. February is the busiest month for a trip to Washington DC. If you like a quieter vibe, go in May.

  • The warmest month in Washington DC is July, with temperatures ranging between 19ºC (66ºF) and 33ºC (91ºF). Lock in your Ottawa to Washington DC ticket then if you enjoy this type of weather.

  • Look for cheap flights from Ottawa to Washington DC in January if you'd rather travel when it's cooler. Temperatures are at their lowest then, ranging between -6ºC (21ºF) and 10ºC (50ºF) on average.

More about Washington DC

Explore more of United States

  • New York is just one of the many cities in United States waiting to be discovered once you've taken in the sights of Washington DC. Around 322 kilometres to the north-east, its top attractions include Statue of Liberty, Central Park and Empire State Building.

  • Around 193 kilometres north-east of Washington DC, Philadelphia is another favourite stop in United States. Experience this destination's highlights firsthand at Liberty Bell, Independence Hall and Philadelphia Museum of Art.

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

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