Cheap flights from Ottawa to District of Columbia from C$ 255

The month of August is, on average, the cheapest month to fly to District of Columbia from Ottawa, with most prices found around C$ 417. If you aren’t able to travel during the month of August, then book flights to District of Columbia from Ottawa during April instead. Flights to District of Columbia in April, while not as cheap as those in August, still average around C$ 424.

The cheapest day to depart from Ottawa to District of Columbia is on a Friday when prices can be found for as low as C$ 828. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to District of Columbia on Monday is C$ 971.

Our data shows that the cheapest Ottawa to District of Columbia flights are usually those with departure times in the morning. Our users have found flights to District of Columbia in the morning for as low as C$ 802. At noon is when there is more demand to fly to District of Columbia, so prices are often more expensive at around C$ 1,092 per ticket.

Fly from Ottawa to Washington, D.C. Dulles Intl for the best Ottawa - District of Columbia flight prices

There are 4 cabin classes available to choose from on Ottawa to District of Columbia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 7% on your flight if you consider stops on a Ottawa to District of Columbia flight.

Porter Airlines, United Airlines, and Air Canada are the most popular carriers operating from Ottawa to District of Columbia

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to District of Columbia from Ottawa according to our data. Air Canada is the first choice among our users, with 60% of people opting to fly with this airline when travelling to District of Columbia. Keep in mind that there are 5 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.

As of March 2026, there are 7 flights per day flying from Ottawa to District of Columbia. The most common time of day flights depart is 9:00a.m., with 43% of flights taking off at noon.

As of March 2026, 51 flights take off from Ottawa and land in District of Columbia each week. The most common flight departure day for this route is Tue, with 20% of weekly flights taking off on this day.