Cheap flights from Washington to Ottawa
from 154 US$
From 255 USD — compare hundreds of airlines
The cheapest month is usually 2026-09 · 154 US$
See prices for my dates →Live fares from 100+ sites — free, with no hidden fees.
About this route
Compare flights from Washington to Ottawa, 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 Washington to Ottawa?
It's usually 2026-09, from 154 USD. Use the price calendar to compare other dates.
How long is the flight from Washington to Ottawa?
A nonstop flight takes about 1h 25m and covers around 733 km. Connecting itineraries take longer.
Are there direct flights from Washington to Ottawa?
Yes, this route has nonstop flights. Filter by "nonstop" to see them.
Which airlines fly from Washington to Ottawa?
Air Canada, United Airlines operate this route, among others. Compare them all in the results.
When should I book Washington–Ottawa 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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Washington → Ottawa · Live fares from 100+ sites — free, with no hidden fees.