HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Trieste

$1,096+ 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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — TRS
Jul 27 — Aug 31
Mon 7/27
Mon 8/3
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 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 June 27, 2026.

This FlightHub deal was found by Cheapflights users on 6/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:15 am
SAN
-
TRS
2 stops29h 40m
Multiple Airlines
Sat 10/106:15 am
TRS
-
SAN
2 stops25h 43m
Multiple Airlines
Deal found 6/27$1,096
This United Airlines deal was found by Cheapflights users on 6/25. 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.
Sat 12/510:30 pm
SAN
-
TRS
2 stops26h 55m
United Airlines
Tue 12/86:35 am
TRS
-
SAN
2 stops25h 03m
United Airlines
Deal found 6/25$1,121
This Cheapflightsfares deal was found by Cheapflights users on 6/24. 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.
Fri 10/22:07 pm
SAN
-
TRS
2 stops22h 48m
Lufthansa
Sat 10/106:15 am
TRS
-
SAN
2 stops22h 53m
Lufthansa
Deal found 6/24$1,138
This FlightHub deal was found by Cheapflights users on 6/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/277:00 am
SAN
-
TRS
2 stops26h 30m
Lufthansa
Sun 1/103:15 pm
TRS
-
SAN
2 stops57h 30m
Lufthansa
Deal found 6/26$1,242
This FlightHub deal was found by Cheapflights users on 6/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/195:35 pm
SAN
-
TRS
2 stops35h 55m
Multiple Airlines
Sun 1/33:15 pm
TRS
-
SAN
2 stops57h 30m
Multiple Airlines
Deal found 6/27$1,662
This United Airlines deal was found by Cheapflights users on 6/26. 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 12/277:41 pm
SAN
-
TRS
3 stops29h 44m
United Airlines
Sun 1/106:35 am
TRS
-
SAN
2 stops25h 03m
United Airlines
Deal found 6/26$2,045
This Mytrip deal was found by Cheapflights users on 6/26. 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.
Sun 12/277:05 am
SAN
-
TRS
3 stops30h 50m
Multiple Airlines
Sun 1/1011:15 am
TRS
-
SAN
3 stops33h 45m
Multiple Airlines
Deal found 6/26$2,260
This United Airlines deal was found by Cheapflights users on 6/27. 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.
Sat 12/197:41 pm
SAN
-
TRS
3 stops29h 44m
United Airlines
Sun 1/36:35 am
TRS
-
SAN
2 stops37h 47m
United Airlines
Deal found 6/27$3,123

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 June 27, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$1,121
(United Airlines)
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.
Search Deals
From San Diego to Trieste Ronchi dei Legionari
Search Deals

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 June 27, 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

Fri 10/2

7:15 am-9:55 pm

2 stops29h 40m

Trieste Ronchi dei Legionari

Sat 10/10

6:15 am-10:58 pm

2 stops25h 43m

$1,096

San DiegoTrieste

SAN - TRS

SANTRS

San Diego

Sat 12/5

10:30 pm-10:25 am

2 stops26h 55m

Trieste Ronchi dei Legionari

Tue 12/8

6:35 am-9:57 pm

2 stops24h 22m

$1,121
Quickest round-trip

San DiegoTrieste

SAN - TRS

SANTRS

San Diego

Fri 10/2

2:07 pm-9:55 pm

2 stops22h 48m

Trieste Ronchi dei Legionari

Sat 10/10

6:15 am-8:08 pm

2 stops22h 53m

$1,138

San DiegoTrieste

SAN - TRS

SANTRS

San Diego

Sat 12/19

7:41 pm-10:25 am

3 stops29h 44m

Trieste Ronchi dei Legionari

Sun 1/3

6:35 am-11:22 am

2 stops37h 47m

$3,123

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/27

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.
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.

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

    There are many flights that can get you from San Diego to Trieste in 22h 48m. Fly via United Airlines or Lufthansa 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.

See more FAQs

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 for San Diego to Trieste

See prices for flight routes from nearby airports that may be better suited for you.
San Francisco to Vicenza flights
Los Angeles to Vicenza flights
Las Vegas to Vicenza flights
San Jose to Vicenza flights
San Francisco to Trieste flights
Reno to Vicenza flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.