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Trieste

$706+ Cheap flights from Seattle (SEA) 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — TRS
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheap flight deals from Seattle to Trieste

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) 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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$706
(Lufthansa)
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 Seattle/Tacoma Intl to Trieste Ronchi dei Legionari
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Find flight deals from Seattle to Trieste

Cheapest flights from Seattle to Trieste
Explore the most affordable flight options available from Seattle to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Lufthansa deal was found by Cheapflights users on 10/27. 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 11/1910:05 amSEA - TRS
2 stops19h 00mLufthansa
Sun 11/233:00 pmTRS - SEA
1 stop30h 10mLufthansa
Deal found 10/27$706
This KLM deal was found by Cheapflights users on 10/28. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/197:20 amSEA - TRS
2 stops26h 10mKLM
Sun 11/236:35 amTRS - SEA
2 stops24h 50mKLM
Deal found 10/28$764
This Cheapflightsfares deal was found by Cheapflights users on 10/27. 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 10/283:00 pmSEA - TRS
1 stop15h 00mLufthansa
Tue 11/46:15 amTRS - SEA
1 stop14h 55mLufthansa
Deal found 10/27$794
This Orbitz deal was found by Cheapflights users on 10/27. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/283:00 pmSEA - TRS
1 stop15h 00mMultiple Airlines
Tue 11/42:40 pmTRS - SEA
2 stops51h 51mMultiple Airlines
Deal found 10/27$831
This United deal was found by Cheapflights users on 10/29. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/99:25 amSEA - TRS
2 stops28h 00mMultiple Airlines
Fri 11/143:00 pmTRS - SEA
2 stops55h 20mMultiple Airlines
Deal found 10/29$1,001

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle 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 October 29, 2025.
Use the filters below to find and compare flights from Seattle to Trieste that are best for you.

Fly from

Seattle

Fly to

Trieste

Route

Depart

Return

Price

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Wed 11/19

10:05 am-2:05 pm

2 stops19h 00m

Trieste Ronchi dei Legionari

Sun 11/23

3:00 pm-12:10 pm

1 stop30h 10m

$706

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Wed 11/19

7:20 am-6:30 pm

2 stops26h 10m

Trieste Ronchi dei Legionari

Sun 11/23

6:35 am-10:25 pm

2 stops24h 50m

$764

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Sun 11/9

9:25 am-10:25 pm

2 stops28h 00m

Trieste Ronchi dei Legionari

Fri 11/14

3:00 pm-1:20 pm

2 stops55h 20m

$1,001

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

$1,522

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Compare providers for flights from Seattle to Trieste

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Trieste in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Trieste flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Trieste flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seattle-Trieste flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Trieste flights, Cheapflights users trust eDreams the most. eDreams 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 Seattle-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 Seattle to Trieste

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

What is the cheapest month to book a flight from Seattle to Trieste?

Currently, March is the cheapest month in which you can book a flight from Seattle to Trieste (average of $566). Flying from Seattle 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 Seattle 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 Seattle to Trieste?

    Airlines like Lufthansa and KLM fly from Seattle to Trieste in about 19h. The time it takes to get you to your destination can typically vary by up to 7h 10m. The distance between Seattle and Trieste is about 5456 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Trieste?

    Currently, March is the cheapest month in which you can book a flight from Seattle to Trieste (average of $566). Flying from Seattle 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.

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