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Trieste

$1,103+ 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — TRS
Apr 18 — Apr 251
Sat 4/18
Sat 4/25
1 adult, Economy
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Cheap flight deals from San Diego to Trieste

Cheapest flights from San Diego to Trieste
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 March 19, 2026.

This KLM deal was found by Cheapflights users on 3/14. 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.
Thu 4/96:15 am
SAN
-
TRS
2 stops23h 15m
KLM
Tue 4/143:15 pm
TRS
-
SAN
2 stops38h 30m
KLM
Deal found 3/14$1,103
This Mytrip deal was found by Cheapflights users on 3/14. 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.
Thu 4/912:45 pm
SAN
-
TRS
3 stops25h 10m
Multiple Airlines
Tue 4/1411:15 am
TRS
-
SAN
2 stops33h 32m
Multiple Airlines
Deal found 3/14$1,460
This United Airlines deal was found by Cheapflights users on 3/18. 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.
Wed 12/97:00 am
SAN
-
TRS
2 stops18h 25m
United Airlines
Sun 12/136:35 am
TRS
-
SAN
2 stops22h 58m
United Airlines
Deal found 3/18$1,597
This United Airlines deal was found by Cheapflights users on 3/15. 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 12/27:00 am
SAN
-
TRS
2 stops18h 25m
United Airlines
Sun 12/66:35 am
TRS
-
SAN
2 stops22h 58m
United Airlines
Deal found 3/15$1,944
This United Airlines deal was found by Cheapflights users on 3/17. 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 6/1912:30 pm
SAN
-
TRS
2 stops60h 55m
United Airlines
Sat 7/46:35 am
TRS
-
SAN
2 stops23h 04m
United Airlines
Deal found 3/17$2,048

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 March 19, 2026.

Most accurate provider

Ovago
2 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$1,103
(KLM)
Provider with most accurate pricing for San Diego-Trieste Ronchi dei Legionari flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-Trieste Ronchi dei Legionari flights.
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From San Diego to Trieste Ronchi dei Legionari
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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 2,558,603 searches. Data last updated March 19, 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

Price

Cheapest round-trip

San DiegoTrieste

SAN - TRS

SANTRS

San Diego

Thu 4/9

6:15 am-2:30 pm

2 stops23h 15m

Trieste Ronchi dei Legionari

Tue 4/14

3:15 pm-8:45 pm

2 stops38h 30m

$1,103

San DiegoTrieste

SAN - TRS

SANTRS

San Diego

Thu 4/9

12:45 pm-10:55 pm

3 stops25h 10m

Trieste Ronchi dei Legionari

Tue 4/14

2:45 pm-3:25 pm

3 stops33h 40m

$1,757

San DiegoTrieste

SAN - TRS

SANTRS

San Diego

Fri 6/19

12:30 pm-10:25 am

2 stops60h 55m

Trieste Ronchi dei Legionari

Sat 7/4

6:35 am-8:39 pm

2 stops23h 04m

$2,048
Quickest round-trip

San DiegoTrieste

SAN - TRS

SANTRS

San Diego

Thu 6/11

11:55 am-2:30 pm

2 stops17h 35m

Trieste Ronchi dei Legionari

Sat 7/4

6:35 am-4:53 pm

2 stops19h 18m

$2,177

San DiegoTrieste

SAN - TRS

SANTRS

San Diego

Thu 5/21

10:13 am-10:15 pm

2 stops27h 02m

Trieste Ronchi dei Legionari

Fri 8/21

6:10 am-9:32 pm

2 stops24h 22m

$5,163

San DiegoTrieste

SAN - TRS

SANTRS

San Diego

Thu 5/21

8:00 am-10:25 am

2 stops41h 25m

Trieste Ronchi dei Legionari

Fri 8/21

6:35 am-8:29 pm

2 stops22h 54m

$5,961

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/14

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 90-95% 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.
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.

Cheapflights Insights

Everything you need to know about your flight from San Diego to Trieste

What is the cheapest month to book a flight from San Diego to Trieste?

Currently, November is the cheapest month in which you can book a flight from San Diego to Trieste (average of $448). Flying from San Diego to Trieste in June is currently the most expensive (average of $894). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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.

  • How long is the flight from San Diego to Trieste?

    There are many flights that can get you from San Diego to Trieste in 23h 15m. Fly via KLM or United Airlines to get the fastest option. There are 6192 mi between San Diego and Trieste. This flight may include one or multiple stops.

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

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

  • How can I find direct flights from San Diego to Trieste?

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

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

    Yes. Cheapflights offers flight deals from San Diego 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.

  • What is the cheapest month to book a flight from San Diego to Trieste?

    Currently, November is the cheapest month in which you can book a flight from San Diego to Trieste (average of $448). Flying from San Diego to Trieste in June is currently the most expensive (average of $894). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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