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Trieste

$561+ 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — TRS
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
1 adult, Economy
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Cheap 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 January 20, 2026.

This Expedia deal was found by Cheapflights users on 1/17. 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.
Wed 3/41:18 pm
PDX
-
TRS
2 stops24h 22m
Lufthansa
Wed 3/112:40 pm
TRS
-
PDX
2 stops36h 34m
Lufthansa
Deal found 1/17$561
This Cheapflightsfares deal was found by Cheapflights users on 1/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/52:10 pm
SEA
-
TRS
1 stop14h 35m
Lufthansa
Wed 5/276:10 am
TRS
-
SEA
2 stops17h 10m
Lufthansa
Deal found 1/19$659
This FlightHub deal was found by Cheapflights users on 1/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:30 am
PDX
-
TRS
2 stops21h 30m
Lufthansa
Mon 3/302:50 pm
TRS
-
PDX
2 stops36h 44m
Lufthansa
Deal found 1/19$663
This FlightHub deal was found by Cheapflights users on 1/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/26:50 pm
SEA
-
TRS
2 stops18h 25m
Lufthansa
Fri 8/146:35 am
TRS
-
SEA
2 stops19h 24m
Lufthansa
Deal found 1/19$881
This Lufthansa deal was found by Cheapflights users on 1/19. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/16:50 pm
SEA
-
TRS
2 stops18h 25m
Lufthansa
Sat 8/156:35 am
TRS
-
SEA
2 stops19h 24m
Lufthansa
Deal found 1/19$897
This FlightHub deal was found by Cheapflights users on 1/18. 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 8/263:30 pm
PDX
-
TRS
2 stops37h 25m
Lufthansa
Mon 9/72:50 pm
TRS
-
PDX
2 stops36h 51m
Lufthansa
Deal found 1/18$916
This United Airlines deal was found by Cheapflights users on 1/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/511:39 am
SEA
-
TRS
2 stops37h 46m
United Airlines
Wed 5/276:35 am
TRS
-
SEA
3 stops24h 43m
United Airlines
Deal found 1/19$916
This FlightHub deal was found by Cheapflights users on 1/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/16:50 pm
SEA
-
TRS
2 stops18h 25m
Lufthansa
Fri 8/146:35 am
TRS
-
SEA
2 stops19h 24m
Lufthansa
Deal found 1/19$931
This FlightHub deal was found by Cheapflights users on 1/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/26:50 pm
SEA
-
TRS
2 stops18h 25m
Lufthansa
Sat 8/156:35 am
TRS
-
SEA
2 stops19h 24m
Lufthansa
Deal found 1/19$951
This United Airlines deal was found by Cheapflights users on 1/18. 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 8/268:46 am
PDX
-
TRS
2 stops40h 39m
United Airlines
Mon 9/76:35 am
TRS
-
PDX
3 stops45h 06m
United Airlines
Deal found 1/18$1,222
This United Airlines deal was found by Cheapflights users on 1/17. 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 3/41:18 pm
PDX
-
TRS
3 stops36h 07m
United Airlines
Wed 3/116:35 am
TRS
-
PDX
2 stops24h 10m
United Airlines
Deal found 1/17$1,374
This Travelocity deal was found by Cheapflights users on 1/18. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:00 am
PDX
-
TRS
2 stops30h 25m
Multiple Airlines
Fri 10/166:00 am
TRS
-
PDX
2 stops21h 33m
Multiple Airlines
Deal found 1/18$1,520

Find flight deals from Washington to Trieste

Keep the following information in mind while searching for Washington to Trieste flight deals. Data was last updated January 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$561
(Expedia)
Provider with most accurate pricing for Seattle/Tacoma Intl-Trieste Ronchi dei Legionari flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Trieste Ronchi dei Legionari flights.
Search Deals
From Washington to Trieste Ronchi dei Legionari
Search Deals

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 January 20, 2026.
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

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Wed 3/4

1:18 pm-10:40 pm

2 stops24h 22m

Trieste Ronchi dei Legionari

Wed 3/11

2:40 pm-7:14 pm

2 stops36h 34m

$561

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Tue 5/5

2:10 pm-1:45 pm

1 stop14h 35m

Trieste Ronchi dei Legionari

Wed 5/27

6:10 am-12:20 pm

1 stop15h 10m

$659

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Tue 3/3

7:30 am-2:00 pm

2 stops21h 30m

Trieste Ronchi dei Legionari

Mon 3/30

2:50 pm-6:34 pm

2 stops36h 44m

$663

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Tue 5/5

11:39 am-10:25 am

2 stops37h 46m

Trieste Ronchi dei Legionari

Wed 5/27

6:35 am-10:18 pm

3 stops24h 43m

$916

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Wed 3/4

1:18 pm-10:25 am

3 stops36h 07m

Trieste Ronchi dei Legionari

Wed 3/11

6:35 am-10:45 pm

2 stops24h 10m

$1,374

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Tue 3/3

7:00 am-10:25 am

2 stops18h 25m

Trieste Ronchi dei Legionari

Mon 3/30

6:35 am-6:07 pm

3 stops44h 32m

$1,524

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Thu 2/19

7:00 am-10:25 am

2 stops18h 25m

Trieste Ronchi dei Legionari

Mon 2/23

6:35 am-6:49 pm

2 stops21h 14m

$1,834

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/17

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, March is the cheapest month in which you can book a flight from State of Washington to Trieste (average of $433). 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 24h 22m. State of Washington and Trieste are separated by a distance of 5574 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, March is the cheapest month in which you can book a flight from State of Washington to Trieste (average of $433). 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

Browse thousands of different options on Cheapflights for your next trip

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