HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$1,036+ Cheap flights from Trieste (TRS) to San Diego (SAN)

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 2/17. Fares are subject to change and may not be available on all flights or dates of travel.
TRS — SAN
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Trieste to San Diego 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 Trieste to San Diego

Cheapest flights from Trieste to San Diego
Explore the most affordable flight options available from Trieste to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2026.

This KLM deal was found by Cheapflights users on 2/10. 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.
Tue 2/1711:15 am
TRS
-
SAN
2 stops42h 50m
Multiple Airlines
Tue 3/36:30 am
SAN
-
TRS
2 stops22h 55m
Multiple Airlines
Deal found 2/10$1,036
This KLM deal was found by Cheapflights users on 2/10. 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 2/136:35 am
TRS
-
SAN
2 stops45h 16m
KLM
Tue 3/36:30 am
SAN
-
TRS
2 stops22h 55m
KLM
Deal found 2/10$1,139
This KLM deal was found by Cheapflights users on 2/10. 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.
Tue 2/176:35 am
TRS
-
SAN
2 stops23h 30m
KLM
Wed 3/48:00 am
SAN
-
TRS
2 stops25h 30m
KLM
Deal found 2/10$1,145
This United Airlines deal was found by Cheapflights users on 2/8. 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.
Thu 4/166:35 am
TRS
-
SAN
2 stops38h 20m
United Airlines
Mon 4/207:40 pm
SAN
-
TRS
3 stops29h 45m
United Airlines
Deal found 2/8$1,196
This KLM deal was found by Cheapflights users on 2/10. 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 2/136:35 am
TRS
-
SAN
2 stops45h 16m
KLM
Wed 3/48:00 am
SAN
-
TRS
2 stops25h 30m
KLM
Deal found 2/10$1,197
This Expedia deal was found by Cheapflights users on 2/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/162:40 pm
TRS
-
SAN
2 stops37h 08m
Lufthansa
Wed 3/412:55 pm
SAN
-
TRS
2 stops16h 10m
Lufthansa
Deal found 2/10$1,251
This KLM deal was found by Cheapflights users on 2/10. 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.
Tue 2/176:35 am
TRS
-
SAN
2 stops23h 30m
KLM
Thu 3/52:00 pm
SAN
-
TRS
2 stops19h 30m
KLM
Deal found 2/10$1,267
This Air France deal was found by Cheapflights users on 2/10. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/163:15 pm
TRS
-
SAN
2 stops60h 36m
Air France
Tue 3/37:00 am
SAN
-
TRS
2 stops22h 25m
Air France
Deal found 2/10$1,355
This KLM deal was found by Cheapflights users on 2/10. 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.
Sat 2/143:15 pm
TRS
-
SAN
2 stops40h 33m
KLM
Tue 3/37:00 am
SAN
-
TRS
2 stops22h 25m
KLM
Deal found 2/10$1,367
This Air France deal was found by Cheapflights users on 2/10. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/143:15 pm
TRS
-
SAN
2 stops41h 50m
Multiple Airlines
Wed 3/48:00 am
SAN
-
TRS
2 stops21h 25m
Multiple Airlines
Deal found 2/10$1,425

Find flight deals from Trieste to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Trieste (TRS) to San Diego (SAN). 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 February 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,196
(United Airlines)
Provider with most accurate pricing for Trieste Ronchi dei Legionari-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Trieste Ronchi dei Legionari-San Diego flights.
Search Deals
From Trieste Ronchi dei Legionari to San Diego
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Trieste to San Diego 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 February 11, 2026.
Use the filters below to find and compare flights from Trieste to San Diego that are best for you.

Fly from

Trieste

Fly to

San Diego

Route

Depart

Return

Price

TriesteSan Diego

TRS - SAN

TRSSAN

Trieste Ronchi dei Legionari

Thu 4/16

6:35 am-3:39 pm

2 stops42h 04m

San Diego

Mon 4/20

11:00 am-10:25 am

2 stops38h 25m

$1,196

TriesteSan Diego

TRS - SAN

TRSSAN

Trieste Ronchi dei Legionari

Wed 5/6

6:35 am-6:33 pm

2 stops44h 58m

$4,677

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/8

  • Most accurate provider: When it comes to deals on Trieste-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Trieste-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Trieste-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Trieste-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub 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 Trieste-San Diego 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 Trieste to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Trieste 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 Trieste to San Diego. 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 Trieste to San Diego?

    United Airlines can get you from Trieste to San Diego in just under 42h 04m. Your travel time can differ by up to . There are 6192 mi between Trieste and San Diego.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Trieste to San Diego 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

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

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.

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.
Site
©2026 Cheapflights