Cheap Flights from Ottawa to Washington D.C. from $160

Frequently Asked Questions

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

  Based on Trip.com data, Porter Airlines offers one-way fares as low as $160 on Cheapest nonstop routes (e.g. YOW to IAD on Tue, Sep 8), while Porter Airlines offers Cheapest nonstop round-trips from $266 departing on Fri, Oct 9 and returning on Sun, Oct 11.

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

  At the moment, you can catch a nonstop 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 does it take to fly from Ottawa (YOW) to Washington D.C. (WAS) and what is the distance?

  It takes around 1 hour 41 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 66 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 -- AC4696 (10:11) Air Canada: S/M/T/W/T/F/- -- AC8869 (11:23)

• 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 Tue, Sep 8, with one-way flights priced at just $160.
  · 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 are flight tickets from Ottawa (YOW) to Washington D.C. (WAS) the cheapest?

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

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

  After crunching the numbers on our August flight calendar, it's currently cheapest to fly from Ottawa to Washington D.C. on August 22, 2026 with Porter Airlines, with prices starting at $167.

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

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

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

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

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

  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 Ottawa to Washington D.C.?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Ottawa to Washington D.C. is $259. Fares vary by travel date, airline and availability.

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

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Ottawa to Washington D.C. is $408. The final price depends on the outbound and return dates, airline and fare conditions.

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

  Enter Ottawa and Washington D.C., 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.