Cheap flights from Ottawa to Washington
from 321 US$
Compare hundreds of airlines Ottawa–Washington
The cheapest month is usually 2026-10 · 321 US$
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About this route
Compare flights from Ottawa to Washington, a about 733 km route (around 1h 25m nonstop). We gather live prices from hundreds of airlines and agencies so you can find the cheapest and book on the official site, with no hidden fees. Direct flights are available. Airlines such as Air Canada, United Airlines operate this route.
When to buy and when to fly
Prices by date
Fares found by date — cheapest days in green.
How to get the best price
Airlines on this route
FAQ
What's the cheapest month to fly Ottawa to Washington?
It's usually 2026-10, from 321 USD. Use the price calendar to compare other dates.
How long is the flight from Ottawa to Washington?
A nonstop flight takes about 1h 25m and covers around 733 km. Connecting itineraries take longer.
Are there direct flights from Ottawa to Washington?
Yes, this route has nonstop flights. Filter by "nonstop" to see them.
Which airlines fly from Ottawa to Washington?
Air Canada, United Airlines operate this route, among others. Compare them all in the results.
When should I book Ottawa–Washington flights?
As a rule of thumb, booking 3–8 weeks ahead and avoiding weekends and holidays tends to give the best prices. Use the calendar to spot the cheapest dates.
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Ottawa → Washington · Live fares from 100+ sites — free, with no hidden fees.