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Trieste

$301+ Cheap flights from Seattle (SEA) 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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — TRS
Jun 5 — Jun 121
Fri 6/5
Fri 6/12
1 adult, Economy
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Cheap 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 May 6, 2026.

This KAYAK deal was found by Cheapflights users on 5/6. 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 11/82:00 pm
SEA
-
TRS
1 stop15h 05m
Lufthansa
Thu 11/196:15 am
TRS
-
SEA
1 stop14h 55m
Lufthansa
Deal found 5/6$935
This KAYAK deal was found by Cheapflights users on 5/6. 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 11/87:00 am
SEA
-
TRS
2 stops30h 40m
Lufthansa
Fri 11/136:15 am
TRS
-
SEA
1 stop14h 55m
Lufthansa
Deal found 5/6$939
This KAYAK deal was found by Cheapflights users on 5/6. 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.
Mon 11/97:00 am
SEA
-
TRS
2 stops22h 05m
Lufthansa
Tue 11/176:15 am
TRS
-
SEA
2 stops21h 44m
Lufthansa
Deal found 5/6$950
This KAYAK deal was found by Cheapflights users on 5/6. 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 11/82:00 pm
SEA
-
TRS
1 stop15h 05m
Lufthansa
Wed 11/182:45 pm
TRS
-
SEA
2 stops40h 44m
Lufthansa
Deal found 5/6$953
This KAYAK deal was found by Cheapflights users on 5/6. 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 11/82:00 pm
SEA
-
TRS
1 stop15h 05m
Lufthansa
Mon 11/162:45 pm
TRS
-
SEA
1 stop30h 25m
Lufthansa
Deal found 5/6$955
This KAYAK deal was found by Cheapflights users on 5/6. 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.
Mon 11/97:00 am
SEA
-
TRS
2 stops22h 05m
Lufthansa
Mon 11/162:45 pm
TRS
-
SEA
2 stops38h 25m
Lufthansa
Deal found 5/6$970
This KAYAK deal was found by Cheapflights users on 5/6. 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 11/32:00 pm
SEA
-
TRS
1 stop15h 05m
Lufthansa
Tue 11/176:15 am
TRS
-
SEA
1 stop14h 55m
Lufthansa
Deal found 5/6$976
This KAYAK deal was found by Cheapflights users on 5/6. 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 11/37:00 am
SEA
-
TRS
2 stops22h 05m
Lufthansa
Fri 11/136:15 am
TRS
-
SEA
1 stop14h 55m
Lufthansa
Deal found 5/6$980
This KAYAK deal was found by Cheapflights users on 5/4. 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.
Fri 8/1410:45 am
SEA
-
TRS
2 stops26h 10m
Lufthansa
Fri 8/216:10 am
TRS
-
SEA
1 stop14h 45m
Lufthansa
Deal found 5/4$985
This KAYAK deal was found by Cheapflights users on 5/4. 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.
Sat 8/157:00 am
SEA
-
TRS
2 stops30h 15m
Lufthansa
Fri 8/216:10 am
TRS
-
SEA
1 stop14h 45m
Lufthansa
Deal found 5/4$989

Find 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 May 6, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$985
(KAYAK)

One-way from

$301
(Kiwi.com)
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 Seattle/Tacoma Intl to Trieste Ronchi dei Legionari
Search Deals
One-way flight from Seattle/Tacoma Intl to Trieste Ronchi dei Legionari
Search Deals

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 May 6, 2026.
Use the filters below to find and compare flights from Seattle to Trieste that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Fri 8/14

10:45 am-9:55 pm

2 stops26h 10m

Trieste Ronchi dei Legionari

Fri 8/21

6:10 am-11:55 am

1 stop14h 45m

$985

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Mon 7/20

2:00 pm-6:30 pm

1 stop19h 30m

Trieste Ronchi dei Legionari

Mon 8/3

6:35 am-3:30 pm

1 stop17h 55m

$1,073

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Sat 7/25

10:14 am-10:15 pm

2 stops27h 01m

Trieste Ronchi dei Legionari

Sat 8/8

6:15 am-6:33 pm

2 stops21h 18m

$1,161

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Sat 8/15

10:54 am-10:25 am

3 stops38h 31m

Trieste Ronchi dei Legionari

Fri 8/21

6:35 am-11:24 pm

2 stops25h 49m

$1,173

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Mon 7/20

6:10 pm-10:25 pm

1 stop19h 15m

Trieste Ronchi dei Legionari

Mon 8/3

6:10 am-11:07 pm

2 stops25h 57m

$1,220

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Mon 5/25

8:03 am-10:25 pm

2 stops29h 22m

Trieste Ronchi dei Legionari

Sun 5/31

6:10 am-3:40 pm

1 stop18h 30m

$1,249

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Mon 7/20

11:02 am-10:25 am

3 stops38h 23m

Trieste Ronchi dei Legionari

Mon 8/3

6:35 am-9:40 am

2 stops36h 05m

$1,414
Quickest round-trip

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Sun 5/24

6:50 pm-10:15 pm

2 stops18h 25m

Trieste Ronchi dei Legionari

Sun 5/31

6:10 am-12:20 pm

1 stop15h 10m

$1,427

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Sat 6/20

8:11 am-10:15 pm

2 stops29h 04m

Trieste Ronchi dei Legionari

Sat 6/27

6:15 am-7:51 pm

2 stops22h 36m

$1,460
Cheapest one-way

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Mon 9/21

3:40 pm-4:45 pm

2 stops16h 05m

$301

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/6

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

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 May.
ProviderPrice AccuracyTrust Score*
OvagoPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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 Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Seattle-Trieste flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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.

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, KLM, and United Airlines fly from Seattle to Trieste in about 19h 30m. The time it takes to get you to your destination can typically vary by up to 19h 01m. 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.

See more FAQs

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