Cheap Flights from Washington D.C. to Ottawa from $135

Frequently Asked Questions

• What are the cheapest flights from Washington D.C. to Ottawa (WAS-YOW)?

  Based on Trip.com data, Air Canada offers one-way fares as low as $135 on Cheapest nonstop routes (e.g. DCA to YOW on Tue, Oct 20), while Air Canada offers Cheapest nonstop round-trips from $248 departing on Sun, Sep 27 and returning on Mon, Sep 28.

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

  At the moment, you can catch a nonstop flight from Washington D.C. to Ottawa with the following airlines, including: United Airlines 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 does it take to fly from Washington D.C. (WAS) to Ottawa (YOW) and what is the distance?

  It takes around 1 hour 35 minutes to fly from Washington D.C. (WAS) to Ottawa (YOW).

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

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Washington D.C. to Ottawa 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 Washington D.C. to Ottawa?

  Based on Trip.com data in the past 4 weeks, there is 58 flight per week flying from Washington D.C. to Ottawa. You can check the weekly schedule for popular airlines on this route below: Air Canada: S/M/T/W/T/F/S -- AC4161 (08:40) United Airlines: S/M/T/W/T/F/S -- UA4424 (12:41) United Airlines: S/M/T/W/T/F/S -- UA3629 (08:40)

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

  To find best deals on flights from Washington D.C. to Ottawa, 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 Tue, Oct 20, with one-way flights priced at just $135.
  · 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 Ottawa travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Washington D.C. (WAS) to Ottawa (YOW) the cheapest?

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

• Which upcoming date is cheapest to fly from Washington D.C. to Ottawa on?

  After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Washington D.C. to Ottawa on September 18, 2026 with Air Canada, with prices starting at $233.

• Which airports can I fly into Ottawa from Washington D.C.?

  You can arrive at any of the following airports in Ottawa: Ottawa International Airport (YOW), and Gatineau-Ottawa Executive Airport (YND). Flights from Dulles International Airport to Ottawa International Airport (IAD-YOW) are by far the most popular option for this route.

• Is there any time difference between Washington D.C. and Ottawa?

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

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

  Tickets can only be changed or canceled 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.

• What is the average cost of a one-way flight from Washington D.C. to Ottawa?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Washington D.C. to Ottawa is $251. Fares vary by travel date, airline and availability.

• What is the average cost of a round-trip flight from Washington D.C. to Ottawa?

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Washington D.C. to Ottawa is $456. The final price depends on the outbound and return dates, airline and fare conditions.

• How do I book flights from Washington D.C. to Ottawa on Trip.com?

  Enter Washington D.C. and Ottawa, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

• Are there budget airlines on the Washington D.C. to Ottawa route?

  Porter Airlinesare the most popular budget airlines flying from Washington D.C. to Ottawa. Check baggage, seat and payment fees before comparing the final price.