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$947+ Cheap flights from Trieste (TRS) to Seattle (SEA)

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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
TRS — SEA
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
1 adult, Economy
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Cheap flight deals from Trieste to Seattle

Cheapest flights from Trieste to Seattle
Explore the most affordable flight options available from Trieste to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 2026.

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.
Thu 9/246:35 am
TRS
-
SEA
2 stops35h 47m
United Airlines
Mon 9/288:00 am
SEA
-
TRS
2 stops41h 25m
United Airlines
Deal found 1/18$947

Find flight deals from Trieste to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Trieste (TRS) to Seattle (SEA). 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 January 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars
Provider with most accurate pricing for Trieste Ronchi dei Legionari-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Trieste Ronchi dei Legionari-Seattle/Tacoma Intl flights.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Trieste to Seattle 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 Trieste to Seattle that are best for you.

Fly from

Trieste

Fly to

Seattle

Route

Depart

Return

Price

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Wed 4/1

6:35 am-7:45 pm

2 stops22h 10m

$1,295

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Tue 3/31

6:35 am-8:53 pm

2 stops23h 18m

$1,295

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Sat 3/28

7:15 pm-7:45 pm

2 stops32h 30m

$1,295

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Sun 3/29

6:35 am-7:45 pm

2 stops22h 10m

$1,295

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Mon 3/30

7:15 pm-7:45 pm

2 stops33h 30m

$1,295

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Fri 4/3

6:35 am-8:57 pm

2 stops23h 22m

$1,324

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Compare providers for flights from Trieste to Seattle

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 Trieste to Seattle in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

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

Have a flexible travel schedule? Discover the best time to fly to Seattle from Trieste 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 Trieste to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
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