$1,210+ 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 2/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — TRS
Dec 6 — Dec 131
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
Cheapest
Best
Last-minute
One-way
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 November 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 November 6, 2026.
This BusinessClass deal was found by Cheapflights users on 11/4. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/197:00 am -
2 stops26h 30m
Sat 12/266:35 am -
2 stops23h 27m
Deal found 11/4![Lufthansa logo]()
$1,946
This ITA Airways deal was found by Cheapflights users on 11/1. 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 ITA Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/38:03 am -
2 stops21h 27m
Wed 11/116:35 am -
2 stops21h 34m
Deal found 11/1![Multiple Airlines logo]()
$1,961
This Mytrip deal was found by Cheapflights users on 11/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/302:35 pm -
3 stops34h 50m
Sat 1/23:15 pm -
3 stops34h 55m
Deal found 11/3![Multiple Airlines logo]()
$2,135
This Mytrip deal was found by Cheapflights users on 11/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1911:59 pm -
3 stops29h 31m
Sat 12/269:50 pm -
2 stops28h 20m
Deal found 11/4![Multiple Airlines logo]()
$2,151
This United Airlines deal was found by Cheapflights users on 11/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/307:00 am -
2 stops18h 25m
Sat 1/26:35 am -
2 stops23h 24m
Deal found 11/3![United Airlines logo]()
$2,162
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 November 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 November 6, 2026.
This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/17:00 am -
2 stops18h 25m
Fri 2/56:35 am -
2 stops24h 06m
Deal found 11/2![United Airlines logo]()
$1,210
This BusinessClass deal was found by Cheapflights users on 11/4. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/197:00 am -
2 stops26h 30m
Sat 12/266:35 am -
2 stops23h 27m
Deal found 11/4![Lufthansa logo]()
$1,946
This Mytrip deal was found by Cheapflights users on 11/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/302:35 pm -
3 stops34h 50m
Sat 1/23:15 pm -
3 stops34h 55m
Deal found 11/3![Multiple Airlines logo]()
$2,135
Last-minute flights from Seattle to TriesteDiscover last-minute flight deals from Seattle to Trieste. Data last updated November 6, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Trieste. Data last updated November 6, 2026 and is based on user searches.
This BusinessClass deal was found by Cheapflights users on 11/4. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/197:00 am -
2 stops26h 30m
Sat 12/266:35 am -
2 stops23h 27m
Deal found 11/4![Lufthansa logo]()
$1,946
This Mytrip deal was found by Cheapflights users on 11/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1911:59 pm -
3 stops29h 31m
Sat 12/269:50 pm -
2 stops28h 20m
Deal found 11/4![Multiple Airlines logo]()
$2,151
This Mytrip deal was found by Cheapflights users on 11/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/302:35 pm -
3 stops34h 50m
Sat 1/23:15 pm -
3 stops34h 55m
Deal found 11/3![Multiple Airlines logo]()
$2,135
This United Airlines deal was found by Cheapflights users on 11/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/307:00 am -
2 stops18h 25m
Sat 1/26:35 am -
2 stops23h 24m
Deal found 11/3![United Airlines logo]()
$2,162
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 November 6, 2026.
Search for one-way flight options from Seattle to Trieste. Find affordable one-way fares based on user searches. Data last updated November 6, 2026.
This BusinessClass deal was found by Cheapflights users on 11/2. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/232:35 pm -
2 stops18h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Icelandair logo]()
$1,519
This Icelandair deal was found by Cheapflights users on 11/2. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/182:35 pm -
2 stops18h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Icelandair logo]()
$2,162
This BusinessClass deal was found by Cheapflights users on 11/2. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/202:35 pm -
2 stops18h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Icelandair logo]()
$2,388
This Cheapflightsfares deal was found by Cheapflights users on 11/2. 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.
Sun 2/212:50 pm -
2 stops23h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Lufthansa logo]()
$3,564
This BusinessClass deal was found by Cheapflights users on 11/2. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/227:00 am -
2 stops22h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Brussels Airlines logo]()
$3,861
This KLM deal was found by Cheapflights users on 11/2. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/192:20 pm -
2 stops19h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![KLM logo]()
$4,215
This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/247:00 am -
2 stops18h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![United Airlines logo]()
$4,319
This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/218:36 am -
3 stops40h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![United Airlines logo]()
$4,369
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 November 6, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $1,210 (United Airlines) |
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 November 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
Mon 2/1
7:00 am-10:25 am
2 stops18h 25m
Trieste Ronchi dei Legionari
Fri 2/5
6:35 am-9:41 pm
2 stops24h 06m
$1,210
SeattleTrieste
SEA Seattle/Tacoma Intl - TRS Trieste Ronchi dei Legionari
SEATRS
Seattle/Tacoma Intl
Sat 12/19
7:00 am-6:30 pm
2 stops26h 30m
Trieste Ronchi dei Legionari
Sat 12/26
6:35 am-9:02 pm
2 stops23h 27m
$1,946
SeattleTrieste
SEA Seattle/Tacoma Intl - TRS Trieste Ronchi dei Legionari
SEATRS
Seattle/Tacoma Intl
Wed 12/30
2:35 pm-10:25 am
3 stops34h 50m
Trieste Ronchi dei Legionari
Sat 1/2
3:15 pm-5:10 pm
3 stops34h 55m
$2,135
Quickest round-trip
SeattleTrieste
SEA Seattle/Tacoma Intl - TRS Trieste Ronchi dei Legionari
SEATRS
Seattle/Tacoma Intl
Thu 2/18
2:35 pm-6:30 pm
2 stops18h 55m
Trieste Ronchi dei Legionari
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$2,162
SeattleTrieste
SEA Seattle/Tacoma Intl - TRS Trieste Ronchi dei Legionari
SEATRS
Seattle/Tacoma Intl
Fri 2/19
2:20 pm-6:30 pm
2 stops19h 10m
Trieste Ronchi dei Legionari
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$4,215
SeattleTrieste
SEA Seattle/Tacoma Intl - TRS Trieste Ronchi dei Legionari
SEATRS
Seattle/Tacoma Intl
Sun 2/21
8:36 am-10:25 am
3 stops40h 49m
Trieste Ronchi dei Legionari
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$4,369
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 November.
| 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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Seattle
Popular flights
Trieste flight routes