$825+ Cheap flights from San Diego (SAN) 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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — TRS
Oct 28 — Nov 41
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from San Diego 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 San Diego to Trieste
Cheapest
Best
Cheapest flights from San Diego to TriesteExplore the most affordable flight options available from San Diego to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 28, 2026.
Explore the most affordable flight options available from San Diego to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 28, 2026.
This KLM deal was found by Cheapflights users on 9/23. 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 11/47:20 am -
2 stops22h 10m
Wed 11/116:35 am -
2 stops26h 24m
Deal found 9/23![KLM logo]()
$825
This United Airlines deal was found by Cheapflights users on 9/23. 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 11/46:50 am -
2 stops18h 35m
Wed 11/116:35 am -
3 stops45h 02m
Deal found 9/23![United Airlines logo]()
$1,397
This United Airlines deal was found by Cheapflights users on 9/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/77:41 pm -
3 stops29h 44m
Fri 12/116:35 am -
2 stops23h 37m
Deal found 9/27![United Airlines logo]()
$1,495
Best flights from San Diego to TriesteDiscover carefully curated flight deals from San Diego to Trieste that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 28, 2026.
Discover carefully curated flight deals from San Diego to Trieste that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 28, 2026.
This KLM deal was found by Cheapflights users on 9/23. 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 11/47:20 am -
2 stops22h 10m
Wed 11/116:35 am -
2 stops26h 24m
Deal found 9/23![KLM logo]()
$825
This United Airlines deal was found by Cheapflights users on 9/25. 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.
Tue 1/1210:20 pm -
2 stops27h 05m
Fri 1/226:35 am -
2 stops23h 40m
Deal found 9/25![United Airlines logo]()
$1,064
This United Airlines deal was found by Cheapflights users on 9/25. 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 1/1110:20 pm -
2 stops27h 05m
Thu 1/286:35 am -
2 stops22h 58m
Deal found 9/25![United Airlines logo]()
$1,064
This United Airlines deal was found by Cheapflights users on 9/25. 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.
Tue 1/1210:20 pm -
2 stops27h 05m
Sat 1/236:35 am -
2 stops22h 58m
Deal found 9/25![United Airlines logo]()
$1,114
This United Airlines deal was found by Cheapflights users on 9/25. 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.
Fri 1/810:20 pm -
2 stops27h 05m
Fri 1/226:35 am -
3 stops44h 42m
Deal found 9/25![United Airlines logo]()
$1,240
This United Airlines deal was found by Cheapflights users on 9/23. 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 11/46:50 am -
2 stops18h 35m
Wed 11/116:35 am -
3 stops45h 02m
Deal found 9/23![United Airlines logo]()
$1,397
This United Airlines deal was found by Cheapflights users on 9/23. 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 12/67:41 pm -
3 stops29h 44m
Wed 12/96:35 am -
2 stops24h 58m
Deal found 9/23![United Airlines logo]()
$1,495
This United Airlines deal was found by Cheapflights users on 9/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/77:41 pm -
3 stops29h 44m
Fri 12/116:35 am -
2 stops23h 37m
Deal found 9/27![United Airlines logo]()
$1,495
Find flight deals from San Diego to Trieste
Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) 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 28, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $825 (KLM) |
Cheapflights Fare Finder
Customize your flight search to find flights from San Diego 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 28, 2026.
Use the filters below to find and compare flights from San Diego to Trieste that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
San DiegoTrieste
SAN San Diego - TRS Trieste Ronchi dei Legionari
SANTRS
San Diego
Wed 11/4
7:20 am-2:30 pm
2 stops22h 10m
Trieste Ronchi dei Legionari
Wed 11/11
6:35 am-11:59 pm
2 stops26h 24m
$825
San DiegoTrieste
SAN San Diego - TRS Trieste Ronchi dei Legionari
SANTRS
San Diego
Tue 1/12
10:20 pm-10:25 am
2 stops27h 05m
Trieste Ronchi dei Legionari
Fri 1/22
6:35 am-9:15 pm
2 stops23h 40m
$1,064
San DiegoTrieste
SAN San Diego - TRS Trieste Ronchi dei Legionari
SANTRS
San Diego
Mon 1/11
10:20 pm-10:25 am
2 stops27h 05m
Trieste Ronchi dei Legionari
Thu 1/28
6:35 am-8:33 pm
2 stops22h 58m
$1,064
San DiegoTrieste
SAN San Diego - TRS Trieste Ronchi dei Legionari
SANTRS
San Diego
Tue 1/12
10:20 pm-10:25 am
2 stops27h 05m
Trieste Ronchi dei Legionari
Sat 1/23
6:35 am-8:33 pm
2 stops22h 58m
$1,114
San DiegoTrieste
SAN San Diego - TRS Trieste Ronchi dei Legionari
SANTRS
San Diego
Fri 1/8
10:20 pm-10:25 am
2 stops27h 05m
Trieste Ronchi dei Legionari
Fri 1/22
6:35 am-6:17 pm
3 stops44h 42m
$1,240
San DiegoTrieste
SAN San Diego - TRS Trieste Ronchi dei Legionari
SANTRS
San Diego
Wed 11/4
6:50 am-10:25 am
2 stops18h 35m
Trieste Ronchi dei Legionari
Wed 11/11
6:35 am-6:37 pm
3 stops45h 02m
$1,397
San DiegoTrieste
SAN San Diego - TRS Trieste Ronchi dei Legionari
SANTRS
San Diego
Sun 12/6
7:41 pm-10:25 am
3 stops29h 44m
Trieste Ronchi dei Legionari
Wed 12/9
6:35 am-10:33 pm
2 stops24h 58m
$1,495
San DiegoTrieste
SAN San Diego - TRS Trieste Ronchi dei Legionari
SANTRS
San Diego
Mon 12/7
7:41 pm-10:25 am
3 stops29h 44m
Trieste Ronchi dei Legionari
Fri 12/11
6:35 am-9:12 pm
2 stops23h 37m
$1,495
Sorted by cheapest first
- Most accurate provider: When it comes to deals on San Diego-Trieste flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on San Diego-Trieste flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from San Diego-Trieste flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Diego-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 San Diego-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 San Diego to Trieste
Have a flexible travel schedule? Discover the best time to fly to Trieste from San Diego with our price prediction graph.
SAN-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 San Diego 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 San Diego
Popular flights
Trieste flight routes