Cheap Flights Ottawa to Washington D.C. from CAD 217

Flight FAQs

• Which airlines offer the cheapest flights from Ottawa (YOW) to Washington D.C. (WAS)?

  Based on Trip.com data, Porter Airlines offers one-way fares as low as CAD 217 on Cheapest nonstop routes (e.g. YOW to IAD on Thu, Sep 3), while Porter Airlines offers Cheapest nonstop round-trips from CAD 389 departing on Fri, Aug 21 and returning on Tue, Aug 25.

• Which airlines offer direct flights from Ottawa to Washington D.C.?

  At the moment, you can catch a direct flight from Ottawa to Washington D.C. with the following airlines, including: Air Canada Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long is the flight from Ottawa (YOW) to Washington D.C. (WAS)?

  It takes about 1 hour 38 minutes to fly from Ottawa (YOW) to Washington D.C. (WAS).

• When is the best time to book flights from Ottawa to Washington D.C.?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Ottawa to Washington D.C. is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from Ottawa to Washington D.C.?

  Based on Trip.com data in the past 4 weeks, there is 60 flight per week flying from Ottawa to Washington D.C.. You can check the weekly schedule for popular airlines on this route below: Air Canada: S/M/T/W/T/F/S -- AC4394 (07:27) Air Canada: S/M/T/W/T/F/S -- AC4696 (10:19)

• How can I find the best deals on flights from Ottawa to Washington D.C.?

  To find best deals on flights from Ottawa to Washington D.C., you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Thu, Sep 3, with one-way flights priced at just CAD 217.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Air Canada.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Washington D.C. travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When is the best time to book a flight from Ottawa to Washington D.C. to get the best price?

  The cheapest months to fly from Ottawa to Washington D.C. is September, when demand for travel is lower.

• Which upcoming date is the cheapest for flights from Ottawa to Washington D.C.?

  After crunching the numbers on our July flight calendar, it's currently cheapest to fly from Ottawa to Washington D.C. on July 30, 2026 with Porter Airlines, with prices starting at CAD 397.

• Which airports can I fly through when travelling to Washington D.C. from Ottawa?

  You can land at any one of the following hubs in Washington D.C., with Ottawa International Airport to Dulles International Airport (YOW-IAD) is by far the most common option on this route: Ronald Reagan Washington National Airport (DCA) Dulles International Airport (IAD).

• What is the time difference between Ottawa and Washington D.C.?

  The time difference between Washington D.C. and Ottawa is 0h.

• How can I change or cancel my flight ticket from Ottawa to Washington D.C.?

  Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.