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180 € Cheap Flights from Ottawa to Washington Dulles

Compare Ottawa to Washington Dulles flight deals

Find the cheapest month or even day of the year to fly to Washington Dulles

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Flight deals from Ottawa to Washington Dulles

Looking for a cheap last-minute deal or the best return flight from Ottawa to Washington Dulles? Find the lowest prices on one-way and return tickets right here.
Washington D.C..180 € per passenger.Departing Wed, 1 Apr, returning Tue, 7 Apr.Return flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Ottawa International on Wed, 1 Apr, arriving in Washington Dulles.Inbound indirect flight with Porter Airlines, departs from Washington Dulles on Tue, 7 Apr, arriving in Ottawa International.Price includes taxes and charges.From 180 €, select.
Washington D.C..194 € per passenger.Departing Fri, 27 Mar, returning Mon, 30 Mar.Return flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Ottawa International on Fri, 27 Mar, arriving in Washington Dulles.Inbound indirect flight with Porter Airlines, departs from Washington Dulles on Mon, 30 Mar, arriving in Ottawa International.Price includes taxes and charges.From 194 €, select.
Washington D.C..194 € per passenger.Departing Sat, 21 Feb, returning Mon, 23 Feb.Return flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Ottawa International on Sat, 21 Feb, arriving in Washington Dulles.Inbound indirect flight with Porter Airlines, departs from Washington Dulles on Mon, 23 Feb, arriving in Ottawa International.Price includes taxes and charges.From 194 €, select.
Washington D.C..200 € per passenger.Departing Sat, 21 Feb, returning Mon, 23 Feb.Return flight with United.Outbound direct flight with United departs from Ottawa International on Sat, 21 Feb, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Mon, 23 Feb, arriving in Ottawa International.Price includes taxes and charges.From 200 €, select.
Washington D.C..201 € per passenger.Departing Thu, 9 Apr, returning Sun, 19 Apr.Return flight with United.Outbound direct flight with United departs from Ottawa International on Thu, 9 Apr, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Sun, 19 Apr, arriving in Ottawa International.Price includes taxes and charges.From 201 €, select.
Washington D.C..218 € per passenger.Departing Fri, 1 May, returning Fri, 8 May.Return flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Ottawa International on Fri, 1 May, arriving in Washington Dulles.Inbound indirect flight with Porter Airlines, departs from Washington Dulles on Fri, 8 May, arriving in Ottawa International.Price includes taxes and charges.From 218 €, select.
Washington D.C..222 € per passenger.Departing Thu, 5 Mar, returning Tue, 10 Mar.Return flight with United.Outbound direct flight with United departs from Ottawa International on Thu, 5 Mar, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Tue, 10 Mar, arriving in Ottawa International.Price includes taxes and charges.From 222 €, select.
Washington D.C..223 € per passenger.Departing Fri, 30 Jan, returning Sun, 1 Feb.Return flight with United.Outbound direct flight with United departs from Ottawa International on Fri, 30 Jan, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Sun, 1 Feb, arriving in Ottawa International.Price includes taxes and charges.From 223 €, select.

Find the cheapest month to fly from Ottawa to Washington Dulles

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ottawa to Washington Dulles flights are currently cheapest in April.
Jan
from 274 €
Feb
from 194 €
Mar
from 194 €
Apr
from 180 €
May
from 218 €
Jun
from 305 €
Jul
from 401 €
Aug
Find prices
Sep
Find prices
Oct
from 325 €
Nov
Find prices
Dec
from 348 €

Direct flights from Ottawa to Washington Dulles

Ottawa to Washington Dulles: Alternative routes

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

Ottawa to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight found180 €
Cheapest month to flyApril
Average flight time1 hr, 52 mins
Most popular airlineUnited
Average flights per week83

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

The best price we found for a return flight from Ottawa to Washington Dulles is 180 €. 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 52 minutes is the average flight time from Ottawa to Washington Dulles.
United, Republic Airways and GoJet Airlines fly direct from Ottawa to Washington Dulles.
As of January 2026, there are 83 flights per week flying from Ottawa to Washington Dulles.
The cheapest month to fly from Ottawa to Washington Dulles is usually April.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Ottawa to Washington Dulles Airport on Wednesday, 1 April 2026.
Yes – the average flight time is 1 hour and 52 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 Dulles 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.

Travelling from Ottawa to Washington Dulles International Airport (IAD): What you need to know

  • Planning your holiday starts with figuring out where you'll fly out of in Ottawa. Ottawa/Macdonald-Cartier International Airport (YOW) is the city's main base, so check out your options for booking a flight from Ottawa to Washington Dulles International Airport (IAD) leaving from here.

  • Ottawa and Washington DC (where Washington Dulles International Airport is located) share the UTC-4 timezone. That means you won't have to change your watch when you arrive.

  • Your flight from Ottawa to IAD won't wait if you're running late, so get to the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.

  • In high season, allow for longer wait times and arrive earlier. Aim for at least two hours ahead for domestic flights and up to four hours for international trips.

Airports in Ottawa

Ottawa Gatineau Airport (YND)

  • The journey from central Ottawa to YND takes about 1 hour 40 minutes on public transport. If you drive, ride-share or get a cab, you'll cover the 24 kilometres in 20 minutes or so, depending on traffic.

  • Booked an early flight from Ottawa to Washington Dulles International Airport? Stay at a hotel close to Ottawa Gatineau Airport, like Meilleure Auberge. Lovely Room 4mins From Gatineau-Ottawa Airport will also put you moments from the departure gate.

Ottawa/Macdonald-Cartier International Airport (YOW)

  • Prefer to leave from Ottawa/Macdonald-Cartier International Airport (YOW)? Direct Ottawa to Washington Dulles International Airport (IAD) plane tickets can be booked from here.

  • Get on your direct flight from Ottawa to IAD with United Airlines. This is one of the leading airlines operating this route out of YOW.

  • United Airlines takes the lead in bookings on the YOW to IAD route.

  • The most reliable carrier is United Airlines. Its Ottawa/Macdonald-Cartier International Airport to Washington Dulles International Airport flights land as scheduled 67.11% of the time.

  • With public transport, you can travel from central Ottawa to YOW in about 45 minutes. The terminal is roughly 13 kilometres away, and making the trip by car will take approximately 20 minutes.

  • Get a head start on your holiday with an additional night away from home. Before your Ottawa to IAD flight, kick back in one of these hotels close to Ottawa/Macdonald-Cartier International Airport:

  • When it comes to keeping flights punctual, Ottawa/Macdonald-Cartier International Airport has an on-time arrival rate of 58.21%.

  • You'll find YOW at 50 Airport Road.

About Washington Dulles International Airport (IAD)

Getting from Washington Dulles International Airport (IAD) to central Washington DC

  • Central Washington DC is around 40 kilometres from Washington Dulles International Airport. Journey times by cab or car hire will vary depending on traffic conditions and time of day, so do some research before you go.

  • If you're taking public transport, expect a journey of about 1 hour 10 minutes.

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

  • The lowest price we've found for a one-way ticket from Ottawa to Washington Dulles International Airport is 106 €. For a return flight on this route, the best price is 180 €. Depending on how early you book and the availability, these fares may change.

  • Booking in advance is often the key to finding a cheap flight from Ottawa to IAD. Flight prices rise as demand increases, so the closer your departure date, the more expensive your ticket may be.

  • Cheap Ottawa to Washington Dulles International Airport tickets are easier to find when your dates are flexible. Try using the 'Whole month' search function to compare fares across every month and then fly out on the cheapest day.

  • Spend less time searching for cheap plane tickets from Ottawa to IAD by creating a Price Alert. We'll send you an email or notification through the app when prices go down.

  • Save on your flight from Ottawa to Washington Dulles International Airport by using filters. Select your ideal departure time, duration and airlines, then sort the results by 'Cheapest' for the best deals.

The best time to fly from Ottawa to Washington Dulles International Airport (IAD)

  • Think about the kind of experience you want when picking your flight dates. February is the quietest month to visit Washington DC. July is when most people book flights from Ottawa to Washington Dulles International Airport (IAD), which may be perfect if you're after more excitement.

  • Book an Ottawa to IAD plane ticket departing in July if you're eager to experience the city during its warmest month. You can expect temperatures in Washington DC to range from 19ºC (66ºF) to 33ºC (91ºF).

  • If you want cooler conditions, search for a cheap ticket from Ottawa to Washington Dulles International Airport in January when temperatures are between -6ºC (21ºF) and 10ºC (50ºF).

More about Washington DC

Explore more of the United States

  • You've seen Washington DC, now it's time to discover other parts of the United States. Travel about 225 kilometres north-east to Philadelphia to check off its popular sights. From Independence Hall to Liberty Bell and Philadelphia Museum of Art, you've got a jam-packed schedule ahead.

  • Virginia Beach is another standout destination in the United States and is around 274 kilometres south-east of Washington DC. No trip is complete without visiting Virginia Beach Oceanfront, Virginia Beach Boardwalk and Resort Beach.

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.