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Cheap flights from Trieste to San Diego from $1,197

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Trieste to San Diego departing on 10/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Trieste to San Diego

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:35 am - 10:19 pm
TRS
-
SAN
24h 44m
2 stops
United Airlines Logo
10:20 pm - 10:25 am
SAN
-
TRS
27h 05m
2 stops
$1,197United Airlines
Wed, Oct 14 - Sun, Oct 18
United Airlines Logo
6:35 am - 9:32 am
TRS
-
SAN
35h 57m
2 stops
United Airlines Logo
2:24 pm - 10:25 am
SAN
-
TRS
35h 01m
3 stops
$1,200United Airlines
Wed, Sep 2 - Sun, Sep 6
United Airlines Logo
6:35 am - 9:32 am
TRS
-
SAN
35h 57m
2 stops
United Airlines Logo
2:24 pm - 10:25 am
SAN
-
TRS
35h 01m
3 stops
$1,203United Airlines
Wed, Sep 2 - Sun, Sep 6

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United Airlines flights from Trieste to San Diego

Our best United Airlines deals on Trieste to San Diego flight tickets
United Airlines
Oct 14
TRS6:35 amTrieste Ronchi dei Legionari
24h 44m
2 stops
SAN10:19 pmSan Diego
Oct 18
SAN10:20 pmSan Diego
27h 05m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
$1,197
United Airlines
Sep 2
TRS6:35 amTrieste Ronchi dei Legionari
35h 57m
2 stops
SAN9:32 amSan Diego
Sep 6
SAN2:24 pmSan Diego
35h 01m
3 stops
TRS10:25 amTrieste Ronchi dei Legionari
$1,200
United Airlines
Sep 2
TRS6:35 amTrieste Ronchi dei Legionari
35h 57m
2 stops
SAN9:32 amSan Diego
Sep 6
SAN2:24 pmSan Diego
35h 01m
3 stops
TRS10:25 amTrieste Ronchi dei Legionari
$1,203

momondo 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, momondo users made 832,500 searches. Data last updated June 16, 2026.
Use the filters below to find and compare flights from Trieste to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

TriesteSan Diego

TRS - SAN

TRSSAN

Trieste Ronchi dei Legionari

Wed 10/14

6:35 am-10:19 pm

2 stops24h 44m

San Diego

Sun 10/18

10:20 pm-10:25 am

2 stops27h 05m

$1,197

TriesteSan Diego

TRS - SAN

TRSSAN

Trieste Ronchi dei Legionari

Wed 9/2

6:35 am-9:32 am

2 stops35h 57m

San Diego

Sun 9/6

2:24 pm-10:25 am

3 stops35h 01m

$1,200

TriesteSan Diego

TRS - SAN

TRSSAN

Trieste Ronchi dei Legionari

Wed 9/2

6:35 am-9:32 am

2 stops35h 57m

San Diego

Sun 9/6

2:24 pm-10:25 am

3 stops35h 01m

$1,203
Cheapest one-way

TriesteSan Diego

TRS - SAN

TRSSAN

Trieste Ronchi dei Legionari

Mon 8/17

6:10 am-6:35 pm

2 stops21h 25m

$3,077
Quickest one-way

TriesteSan Diego

TRS - SAN

TRSSAN

Trieste Ronchi dei Legionari

Mon 8/17

6:10 am-6:30 pm

2 stops21h 20m

$3,079

TriesteSan Diego

TRS - SAN

TRSSAN

Trieste Ronchi dei Legionari

Mon 8/17

6:35 am-12:29 am

3 stops26h 54m

$4,984

TriesteSan Diego

TRS - SAN

TRSSAN

Trieste Ronchi dei Legionari

Mon 8/17

6:35 am-12:29 am

3 stops26h 54m

$4,985

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from Trieste to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Trieste Ronchi dei Legionari to San Diego?

Lufthansa and United Airlines are the most popular carriers operating from Trieste Ronchi dei Legionari to San Diego

When to book flights from Trieste to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from Trieste to San Diego according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Trieste to San Diego (TRS to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Trieste to San Diego

Fastest flight time

36h 14m

Direct flights

None
The fastest flight from Trieste to San Diego takes 36h 14m
There are no direct flights from Trieste to San Diego. There are no popular flight routes from Trieste to San Diego.
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Frequently asked questions about flying from Trieste to San Diego

  • How far is Trieste Ronchi dei Legionari to San Diego by plane?

    San Diego is 6209.3 mi away from Trieste Ronchi dei Legionari. 36h 14m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Trieste Ronchi dei Legionari Airport to San Diego Airport?

    Prices for flights from Trieste Ronchi dei Legionari Airport to San Diego Airport were last updated today.

  • How old do you have to be to fly from Trieste Ronchi dei Legionari Airport to San Diego Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Trieste Ronchi dei Legionari Airport to San Diego Airport.

  • What documentation or ID do you need to fly to San Diego Airport?

    The travel and health documents you'll need for your trip to San Diego Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Diego Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Chula Vista
Coronado
El Cajon
Julian
National City
Poway
La Mesa
San Ysidro
Borrego Springs
Imperial Beach
Lemon Grove
Santee
Alpine

Why use momondo?

Why should I use momondo to find a flight deal from Trieste to San Diego?

It is quick and easy to find Trieste to San Diego flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Diego that suits you.

Can I find flights from Trieste to San Diego with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to San Diego from Trieste with this policy.

How can momondo help me find flights from Trieste to San Diego?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Trieste to San Diego.

I’m not ready to book a flight from Trieste to San Diego right now. Can momondo alert me if prices change?

If you are simply researching potential flights to San Diego, momondo offers a useful price alert feature which will track prices for flights to San Diego from Trieste and alert you when they change.

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