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Trieste

$1,834+ Cheap flights from Portland (PDX) to Trieste (TRS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/11. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — TRS
Jun 12 — Jun 191
Fri 6/12
Fri 6/19
1 adult, Economy
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Cheap flight deals from Portland to Trieste

Cheapest flights from Portland to Trieste
Explore the most affordable flight options available from Portland to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 13, 2026.

This United Airlines deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1111:30 pm
PDX
-
TRS
2 stops26h 00m
United Airlines
Wed 6/176:35 am
TRS
-
PDX
2 stops23h 35m
United Airlines
Deal found 5/9$1,834

Find flight deals from Portland to Trieste

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Trieste (TRS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 13, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$1,834
(United Airlines)
Provider with most accurate pricing for Portland-Trieste Ronchi dei Legionari flight deals.
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Provider most trusted by Cheapflights users for Portland-Trieste Ronchi dei Legionari flights.
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From Portland to Trieste Ronchi dei Legionari
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Trieste that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 13, 2026.
Use the filters below to find and compare flights from Portland to Trieste that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Thu 6/11

11:30 pm-10:30 am

2 stops26h 00m

Trieste Ronchi dei Legionari

Wed 6/17

6:35 am-9:10 pm

2 stops23h 35m

$1,834

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/9

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Portland-Trieste flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Portland-Trieste flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Portland-Trieste flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Trieste flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Trieste flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to Trieste

Have a flexible travel schedule? Discover the best time to fly to Trieste from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Portland to Trieste. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Portland to Trieste?

    United Airlines can get you from Portland to Trieste in just under 26h. Your travel time can differ by up to . The distance from Portland to Trieste is about 5574 mi.

  • Can I find deals for flights from Portland to Trieste that include hotel bookings?

    Yes. In addition to deals on Portland to Trieste flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Trieste?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Trieste.

  • Can I find deals for business class flights from Portland to Trieste?

    Yes. Cheapflights offers flight deals from Portland to Trieste by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Complete your trip

Complete your trip to Trieste by adding a car rental and/or hotel reservation to your travel itinerary.
Trieste car rentals
Venice Marco Polo Airport car rentals
Trieste Ronchi dei Legionari Airport car rentals
Venice Treviso A. Canova Airport car rentals

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