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Trieste

$542+ Cheap flights from Washington 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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — TRS
Dec 31 — Jan 71
Wed 12/31
Wed 1/7
1 adult, Economy
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Cheap flight deals from Washington to Trieste

Keep the following information in mind while searching for Washington to Trieste flight deals. Data was last updated December 1, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$542
(Mytrip)
Provider with most accurate pricing for Seattle/Tacoma Intl-Trieste Ronchi dei Legionari flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Trieste Ronchi dei Legionari flights.
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From Washington to Trieste Ronchi dei Legionari
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Find flight deals from Washington to Trieste

Cheapest flights from Washington to Trieste
Explore the most affordable flight options available from Washington to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 1, 2025.

This KAYAK deal was found by Cheapflights users on 11/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/232:00 pmSEA - TRS
1 stop15h 00mLufthansa
Wed 12/312:40 pmTRS - SEA
2 stops41h 07mLufthansa
Deal found 11/30$1,843
This KAYAK deal was found by Cheapflights users on 11/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/237:00 pmSEA - TRS
2 stops42h 55mTurkish Airlines
Wed 12/3111:15 amTRS - SEA
2 stops38h 50mTurkish Airlines
Deal found 11/30$2,176

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington 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 December 1, 2025.
Use the filters below to find and compare flights from Washington to Trieste that are best for you.

Fly from

Washington

Fly to

Trieste

Route

Depart

Return

Price

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Wed 1/14

8:10 am-2:10 pm

2 stops21h 00m

Trieste Ronchi dei Legionari

Wed 1/21

7:15 pm-12:10 pm

2 stops25h 55m

$542

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Wed 1/28

10:05 am-2:10 pm

2 stops19h 05m

Trieste Ronchi dei Legionari

Sun 2/1

3:15 pm-12:10 pm

2 stops29h 55m

$548

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Thu 1/22

6:50 am-6:30 pm

2 stops26h 40m

Trieste Ronchi dei Legionari

Mon 1/26

3:15 pm-10:15 pm

2 stops40h 00m

$593

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Wed 1/28

7:00 am-10:25 am

2 stops18h 25m

Trieste Ronchi dei Legionari

Sun 2/1

6:35 am-10:43 pm

3 stops25h 08m

$1,811

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Tue 12/23

2:00 pm-2:00 pm

1 stop15h 00m

Trieste Ronchi dei Legionari

Wed 12/31

2:40 pm-10:47 pm

2 stops41h 07m

$1,843

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/30

Best time to book a flight from Washington to Trieste

Have a flexible travel schedule? Discover the best time to fly to Trieste from Washington 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.

Cheapflights Insights

Everything you need to know about your flight from Washington to Trieste

What is the cheapest month to book a flight from State of Washington to Trieste?

Currently, February is the cheapest month in which you can book a flight from State of Washington to Trieste (average of $486). Flying from State of Washington to Trieste in June is currently the most expensive (average of $870). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

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

  • What airport do you fly into for flights to Trieste from Washington?

    If you book a flight to Trieste from Washington, you will be flying to Ronchi dei Legionari, which is the city’s only airport. Trieste Ronchi dei Legionari (TRS) is located 18.2 mi from the center of Trieste.

  • How long is the flight from State of Washington to Trieste?

    Departing from State of Washington to Trieste will take you 19h 05m. State of Washington and Trieste are separated by a distance of 5456 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington 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.

  • What is the cheapest month to book a flight from State of Washington to Trieste?

    Currently, February is the cheapest month in which you can book a flight from State of Washington to Trieste (average of $486). Flying from State of Washington to Trieste in June is currently the most expensive (average of $870). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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