Ottawa to Washington
Ottawa to Washington is cheapest from October through July, all at 562 €. September, the most expensive month we measured, costs about 36 € more.
Ottawa to Washington is 728 km flown direct. Every fare we measured came from WS.
That comes from pricing 298 departure dates across 11 months. Every figure below is a fare we measured on the day shown, not a live quote. When we have nothing fresh to say about a route, its page stops existing.
What is a good price from Ottawa to Washington?
Anything at or below the quarter mark beats three in four of the 298 one-way fares we measured here. Above the median, wait or move the date.
seen 27 Sep 2026
How far ahead do the cheap fares sit?
When we measured, the cheapest quarter of fares sat between 100 and 208 days before departure, closer in than the market as a whole. The cheap fares were on nearer dates, not months away, when we looked.
a snapshot of where the cheap seats sat, seen 27 Sep 2026
Which day of the week is cheapest?
On average, Wednesday departures came out lowest and Sunday highest, a spread of about 40 €. On this route the day moves the price about as much as the month does, which is unusual: check both before booking.