Trieste

$327+ Cheap flights from Washington to Trieste (TRS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — TRS
Oct 19 — Oct 261
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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 September 19, 2025.

Round-trip from

$642
(Expedia)

One-way from

$327
(Kiwi.com)
From Washington to Trieste Ronchi dei Legionari
One-way flight from Washington to Trieste Ronchi dei Legionari

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 September 19, 2025.

This Expedia deal was found by Cheapflights users on 9/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/32:00 pmSEA - TRS
1 stop15h 00mLufthansa
Mon 11/102:40 pmTRS - SEA
1 stop30h 30mLufthansa
Deal found 9/19$642
This Kiwi.com deal was found by Cheapflights users on 9/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/12:20 pmSEA - TRS
1 stop14h 45mLufthansa
Wed 10/152:45 pmTRS - SEA
2 stops32h 31mLufthansa
Deal found 9/18$692
This Lufthansa deal was found by Cheapflights users on 9/16. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/197:30 amPDX - TRS
2 stops30h 10mLufthansa
Sun 11/233:00 pmTRS - PDX
2 stops42h 26mLufthansa
Deal found 9/16$706
This FlightHub deal was found by Cheapflights users on 9/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/242:20 pmSEA - TRS
1 stop14h 45mLufthansa
Wed 10/16:30 amTRS - SEA
1 stop14h 25mLufthansa
Deal found 9/18$706
This Lufthansa deal was found by Cheapflights users on 9/18. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1212:35 pmSEA - TRS
2 stops25h 05mLufthansa
Sun 11/163:00 pmTRS - SEA
2 stops36h 52mLufthansa
Deal found 9/18$707
This Lufthansa deal was found by Cheapflights users on 9/16. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/197:00 amSEA - TRS
2 stops22h 05mLufthansa
Sun 11/233:00 pmTRS - SEA
1 stop30h 10mLufthansa
Deal found 9/16$711
This Lufthansa deal was found by Cheapflights users on 9/18. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/302:20 pmSEA - TRS
1 stop14h 45mLufthansa
Tue 10/146:30 amTRS - SEA
2 stops16h 46mLufthansa
Deal found 9/18$712
This KAYAK deal was found by Cheapflights users on 9/18. 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.
Sun 9/282:20 pmSEA - TRS
1 stop14h 45mLufthansa
Fri 10/176:30 amTRS - SEA
1 stop14h 25mLufthansa
Deal found 9/18$717
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Wed 11/197:00 amPDX - TRS
2 stops18h 25mUnited Airlines
Sun 11/236:35 amTRS - PDX
3 stops38h 38mUnited Airlines
Deal found 9/18$1,955
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Wed 10/18:08 amPDX - TRS
2 stops17h 17mUnited Airlines
Tue 10/76:35 amTRS - PDX
2 stops22h 45mUnited Airlines
Deal found 9/18$2,586

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 September 19, 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

Mon 11/3

2:00 pm-2:00 pm

1 stop15h 00m

Trieste Ronchi dei Legionari

Mon 11/10

2:40 pm-12:10 pm

1 stop30h 30m

$642

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Wed 11/19

7:00 am-2:05 pm

2 stops22h 05m

Trieste Ronchi dei Legionari

Sun 11/23

3:00 pm-12:10 pm

1 stop30h 10m

$696

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Wed 11/12

7:00 am-2:05 pm

2 stops22h 05m

Trieste Ronchi dei Legionari

Sun 11/16

3:00 pm-12:10 pm

1 stop30h 10m

$697

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Wed 11/19

7:30 am-10:40 pm

2 stops30h 10m

Trieste Ronchi dei Legionari

Sun 11/23

3:00 pm-12:26 am

2 stops42h 26m

$706

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Wed 10/1

2:20 pm-2:05 pm

1 stop14h 45m

Trieste Ronchi dei Legionari

Tue 10/14

6:30 am-2:16 pm

2 stops16h 46m

$712

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Tue 9/30

2:20 pm-2:05 pm

1 stop14h 45m

Trieste Ronchi dei Legionari

Wed 10/15

6:30 am-11:55 am

1 stop14h 25m

$712

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Wed 10/1

2:20 pm-2:05 pm

1 stop14h 45m

Trieste Ronchi dei Legionari

Thu 10/16

6:30 am-11:55 am

1 stop14h 25m

$712

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Tue 9/30

2:20 pm-2:05 pm

1 stop14h 45m

Trieste Ronchi dei Legionari

Tue 10/14

6:30 am-2:16 pm

2 stops16h 46m

$712

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Wed 11/19

7:00 am-10:25 am

2 stops18h 25m

Trieste Ronchi dei Legionari

Sun 11/23

6:35 am-12:13 pm

3 stops38h 38m

$1,955

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Wed 10/1

8:08 am-10:25 am

2 stops17h 17m

Trieste Ronchi dei Legionari

Tue 10/7

6:35 am-8:20 pm

2 stops22h 45m

$2,586

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/18

Showing 1-10 of 11 results
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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
No data available for this route at this time. Please check back soon.

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 15h. 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.

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