Cheap flights from Ottawa to District of Columbia from C$ 252

The month of April is, on average, the cheapest month to fly to District of Columbia from Ottawa, with most prices found around C$ 136. If you aren’t able to travel during the month of April, then book flights to District of Columbia from Ottawa during August instead. Flights to District of Columbia in August, while not as cheap as those in April, still average around C$ 155.

The cheapest day to depart from Ottawa to District of Columbia is on a Saturday when prices can be found for as low as C$ 808. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to District of Columbia on Sunday is C$ 908.

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$ 781. At noon is when there is more demand to fly to District of Columbia, so prices are often more expensive at around C$ 1,088 per ticket.

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

You could potentially save up to 22% on your flight if you consider stops on a Ottawa to District of Columbia flight.

Porter Airlines, Air Canada, and American Airlines 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 May 2026, there are 9 flights per day flying from Ottawa to District of Columbia. The most common time of day flights depart is 10:00a.m., with 57% of flights taking off at noon.

As of May 2026, 68 flights take off from Ottawa and land in District of Columbia each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.