Find cheap flights from Ottawa to Portland from $391

In the last 3 days, the lowest price for a flight from Ottawa to Portland, Maine was $391 for a round-trip ticket.

Yes, you'll most likely have to show a valid passport before boarding the plane in Ottawa and on arrival in Portland.

We unfortunately don’t have that data for this specific route.

Star Alliance is the only airline alliance operating flights between Ottawa and Portland.

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ottawa to Portland.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portland from Ottawa is likely to change within 7 days, so travelers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Portland with an airline and back to Ottawa with another airline. Booking your flights between Ottawa and PWM can sometimes prove cheaper using this method.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Portland from Ottawa up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.