$1,025+ 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 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — TRS
Oct 6 — Oct 131
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Trieste with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Trieste
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Cheapest flights from Seattle to TriesteExplore 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 September 6, 2026.
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 September 6, 2026.
This Mytrip deal was found by Cheapflights users on 9/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1710:30 am -
2 stops21h 05m
Sat 10/246:55 am -
2 stops22h 45m
Deal found 9/2![Multiple Airlines logo]()
$1,025
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Fri 10/239:40 pm -
1 stop17h 05m
Fri 10/306:00 am -
1 stop20h 05m
Deal found 9/1![Multiple Airlines logo]()
$1,026
This Mytrip deal was found by Cheapflights users on 9/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:15 pm -
2 stops18h 55m
Wed 10/283:15 pm -
3 stops34h 55m
Deal found 9/6![Multiple Airlines logo]()
$1,072
This Mytrip deal was found by Cheapflights users on 9/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:40 pm -
2 stops19h 45m
Sun 10/256:20 pm -
2 stops30h 35m
Deal found 9/1![Multiple Airlines logo]()
$1,080
This Cheapflightsfares deal was found by Cheapflights users on 9/2. 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.
Sat 10/171:56 pm -
2 stops23h 19m
Sat 10/246:15 am -
1 stop15h 05m
Deal found 9/2![Lufthansa logo]()
$1,101
This Icelandair deal was found by Cheapflights users on 9/5. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/72:35 pm -
2 stops18h 55m
Thu 1/146:35 am -
2 stops19h 25m
Deal found 9/5![Icelandair logo]()
$1,116
Best flights from Seattle to TriesteDiscover carefully curated flight deals from Seattle to Trieste that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 6, 2026.
Discover carefully curated flight deals from Seattle to Trieste that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 6, 2026.
This SmartFares deal was found by Cheapflights users on 9/2. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:00 pm -
1 stop19h 15m
Sat 10/242:45 pm -
1 stop33h 10m
Deal found 9/2![Multiple Airlines logo]()
$1,074
This Icelandair deal was found by Cheapflights users on 9/5. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/92:35 pm -
2 stops18h 55m
Thu 1/146:35 am -
2 stops19h 25m
Deal found 9/5![Icelandair logo]()
$1,116
This United Airlines deal was found by Cheapflights users on 9/5. 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.
Sun 12/611:43 pm -
2 stops25h 42m
Thu 12/106:35 am -
3 stops39h 47m
Deal found 9/5![United Airlines logo]()
$1,174
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Fri 10/169:40 pm -
1 stop17h 05m
Sun 10/252:30 pm -
1 stop35h 35m
Deal found 9/1![Multiple Airlines logo]()
$1,109
This Icelandair deal was found by Cheapflights users on 9/5. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/92:35 pm -
2 stops18h 55m
Mon 1/186:35 am -
2 stops19h 25m
Deal found 9/5![Icelandair logo]()
$1,166
This United Airlines deal was found by Cheapflights users on 9/5. 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.
Sat 12/511:43 pm -
2 stops25h 42m
Thu 1/146:35 am -
3 stops39h 10m
Deal found 9/5![United Airlines logo]()
$1,174
This Mytrip deal was found by Cheapflights users on 9/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/233:40 pm -
2 stops23h 05m
Fri 10/306:00 am -
2 stops20h 00m
Deal found 9/1![Multiple Airlines logo]()
$1,127
Last-minute flights from Seattle to TriesteDiscover last-minute flight deals from Seattle to Trieste. Data last updated September 6, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Trieste. Data last updated September 6, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 9/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:40 pm -
2 stops19h 45m
Sun 10/256:20 pm -
2 stops30h 35m
Deal found 9/1![Multiple Airlines logo]()
$1,080
This Mytrip deal was found by Cheapflights users on 9/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1710:30 am -
2 stops21h 05m
Sat 10/246:55 am -
2 stops22h 45m
Deal found 9/2![Multiple Airlines logo]()
$1,025
This Cheapflightsfares deal was found by Cheapflights users on 9/2. 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.
Sat 10/171:56 pm -
2 stops23h 19m
Sat 10/246:15 am -
1 stop15h 05m
Deal found 9/2![Lufthansa logo]()
$1,101
This Mytrip deal was found by Cheapflights users on 9/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:15 pm -
2 stops18h 55m
Wed 10/283:15 pm -
3 stops34h 55m
Deal found 9/6![Multiple Airlines logo]()
$1,072
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Fri 10/239:40 pm -
1 stop17h 05m
Fri 10/306:00 am -
1 stop20h 05m
Deal found 9/1![Multiple Airlines logo]()
$1,026
One-way flights from Seattle to TriesteSearch for one-way flight options from Seattle to Trieste. Find affordable one-way fares based on user searches. Data last updated September 6, 2026.
Search for one-way flight options from Seattle to Trieste. Find affordable one-way fares based on user searches. Data last updated September 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/3. 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.
Sun 10/47:59 pm -
3 stops41h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Multiple Airlines logo]()
$2,794
This oojo deal was found by Cheapflights users on 9/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/43:40 pm -
2 stops17h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Icelandair logo]()
$3,102
This Cheapflightsfares deal was found by Cheapflights users on 9/3. 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.
Sun 10/42:10 pm -
1 stop14h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Lufthansa logo]()
$4,457
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 September 6, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $1,025 (Mytrip) |
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 7,457,451 searches. Data last updated September 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
Cheapest round-trip
SeattleTrieste
SEA Seattle/Tacoma Intl - TRS Trieste Ronchi dei Legionari
SEATRS
Seattle/Tacoma Intl
Sat 10/17
6:00 pm-10:15 pm
1 stop19h 15m
Trieste Ronchi dei Legionari
Sat 10/24
2:45 pm-2:55 pm
1 stop33h 10m
$1,074
SeattleTrieste
SEA Seattle/Tacoma Intl - TRS Trieste Ronchi dei Legionari
SEATRS
Seattle/Tacoma Intl
Fri 10/16
9:40 pm-11:45 pm
1 stop17h 05m
Trieste Ronchi dei Legionari
Sun 10/25
2:30 pm-6:05 pm
1 stop35h 35m
$1,109
SeattleTrieste
SEA Seattle/Tacoma Intl - TRS Trieste Ronchi dei Legionari
SEATRS
Seattle/Tacoma Intl
Wed 12/9
2:35 pm-6:30 pm
2 stops18h 55m
Trieste Ronchi dei Legionari
Thu 1/14
6:35 am-5:00 pm
2 stops19h 25m
$1,116
SeattleTrieste
SEA Seattle/Tacoma Intl - TRS Trieste Ronchi dei Legionari
SEATRS
Seattle/Tacoma Intl
Fri 10/23
3:40 pm-11:45 pm
2 stops23h 05m
Trieste Ronchi dei Legionari
Fri 10/30
6:00 am-6:00 pm
2 stops20h 00m
$1,127
SeattleTrieste
SEA Seattle/Tacoma Intl - TRS Trieste Ronchi dei Legionari
SEATRS
Seattle/Tacoma Intl
Wed 12/9
2:35 pm-6:30 pm
2 stops18h 55m
Trieste Ronchi dei Legionari
Mon 1/18
6:35 am-5:00 pm
2 stops19h 25m
$1,166
SeattleTrieste
SEA Seattle/Tacoma Intl - TRS Trieste Ronchi dei Legionari
SEATRS
Seattle/Tacoma Intl
Sun 12/6
11:43 pm-10:25 am
2 stops25h 42m
Trieste Ronchi dei Legionari
Thu 12/10
6:35 am-1:22 pm
3 stops39h 47m
$1,174
SeattleTrieste
SEA Seattle/Tacoma Intl - TRS Trieste Ronchi dei Legionari
SEATRS
Seattle/Tacoma Intl
Sat 12/5
11:43 pm-10:25 am
2 stops25h 42m
Trieste Ronchi dei Legionari
Thu 1/14
6:35 am-12:45 pm
3 stops39h 10m
$1,174
SeattleTrieste
SEA Seattle/Tacoma Intl - TRS Trieste Ronchi dei Legionari
SEATRS
Seattle/Tacoma Intl
Sun 10/4
3:40 pm-6:30 pm
2 stops17h 50m
Trieste Ronchi dei Legionari
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$3,102
Quickest round-trip
SeattleTrieste
SEA Seattle/Tacoma Intl - TRS Trieste Ronchi dei Legionari
SEATRS
Seattle/Tacoma Intl
Sun 10/4
2:10 pm-1:45 pm
1 stop14h 35m
Trieste Ronchi dei Legionari
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$4,457
Sorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
SEA-TRS
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.
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