$404 Find Cheap Flights from Washington, D.C. to Trieste

In the last 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Trieste was $404 for a one-way ticket and $860 for a round-trip.

Yes, you'll most likely have to show a valid passport before boarding the plane in Washington, D.C. and on arrival in Trieste.

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

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 Washington, D.C. to Trieste.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Trieste from Washington, D.C. 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 Trieste with an airline and back to Washington, D.C. with another airline. Booking your flights between Washington, D.C. and TRS 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 Trieste from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.