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Cheap flights from Trieste to San Diego from $629

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Trieste to San Diego departing on 6/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:35 am - 8:43 pm
TRS
-
SAN
23h 08m
2 stops
United Airlines Logo
6:26 pm - 10:25 am
SAN
-
TRS
54h 59m
2 stops
$913United Airlines
Fri, May 15 - Sat, May 16
Lufthansa Logo
6:15 am - 4:45 pm
TRS
-
SAN
18h 30m
2 stops
Lufthansa Logo
11:00 am - 1:55 pm
SAN
-
TRS
17h 55m
2 stops
$1,073Lufthansa
Thu, Mar 26 - Mon, Mar 30
United Airlines Logo
6:35 am - 8:04 am
TRS
-
SAN
34h 29m
2 stops
United Airlines Logo
1:15 pm - 10:25 am
SAN
-
TRS
60h 10m
2 stops
$1,094United Airlines
Sat, May 16 - Sun, May 17
Lufthansa Logo
11:15 am - 5:20 pm
TRS
-
SAN
39h 05m
2 stops
Lufthansa Logo
4:09 pm - 10:15 pm
SAN
-
TRS
21h 06m
2 stops
$1,104Lufthansa
Wed, Jul 22 - Sun, Jul 26
United Airlines Logo
6:35 am - 3:03 pm
TRS
-
SAN
41h 28m
2 stops
United Airlines Logo
7:41 pm - 10:25 am
SAN
-
TRS
29h 44m
3 stops
$1,179United Airlines
Wed, Jul 22 - Sun, Jul 26
United Airlines Logo
6:35 am - 5:19 pm
TRS
-
SAN
43h 44m
2 stops
United Airlines Logo
4:26 pm - 10:25 am
SAN
-
TRS
56h 59m
2 stops
$1,187United Airlines
Thu, May 14 - Sat, May 16
United Airlines Logo
6:35 am - 6:41 pm
TRS
-
SAN
21h 06m
2 stops
United Airlines Logo
7:15 am - 10:25 am
SAN
-
TRS
42h 10m
2 stops
$1,213United Airlines
Wed, May 13 - Sun, May 17
United Airlines Logo
6:35 am - 8:43 pm
TRS
-
SAN
23h 08m
2 stops
United Airlines Logo
11:04 am - 10:25 am
SAN
-
TRS
38h 21m
2 stops
$1,304United Airlines
Thu, May 14 - Mon, May 18
United Airlines Logo
6:35 am - 10:37 pm
TRS
-
SAN
25h 02m
3 stops
United Airlines Logo
11:04 am - 10:25 am
SAN
-
TRS
38h 21m
2 stops
$1,306United Airlines
Sat, May 16 - Mon, May 18
Lufthansa Logo
6:25 am - 7:48 pm
TRS
-
SAN
21h 23m
2 stops
Lufthansa Logo
11:00 am - 1:45 pm
SAN
-
TRS
17h 45m
2 stops
$1,332Lufthansa
Fri, Mar 27 - Tue, Mar 31

Lufthansa flights from Trieste to San Diego

Our best Lufthansa deals on Trieste to San Diego flight tickets
Lufthansa
Mar 26
TRS6:15 amTrieste Ronchi dei Legionari
18h 30m
2 stops
SAN4:45 pmSan Diego
Mar 30
SAN11:00 amSan Diego
17h 55m
2 stops
TRS1:55 pmTrieste Ronchi dei Legionari
$1,073
Lufthansa
Jul 22
TRS11:15 amTrieste Ronchi dei Legionari
39h 05m
2 stops
SAN5:20 pmSan Diego
Jul 26
SAN4:09 pmSan Diego
21h 06m
2 stops
TRS10:15 pmTrieste Ronchi dei Legionari
$1,104
Lufthansa
Mar 27
TRS6:25 amTrieste Ronchi dei Legionari
21h 23m
2 stops
SAN7:48 pmSan Diego
Mar 31
SAN11:00 amSan Diego
17h 45m
2 stops
TRS1:45 pmTrieste Ronchi dei Legionari
$1,332

United Airlines flights from Trieste to San Diego

Our best United Airlines deals on Trieste to San Diego flight tickets
United Airlines
May 15
TRS6:35 amTrieste Ronchi dei Legionari
23h 08m
2 stops
SAN8:43 pmSan Diego
May 16
SAN6:26 pmSan Diego
54h 59m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
$913
United Airlines
May 16
TRS6:35 amTrieste Ronchi dei Legionari
34h 29m
2 stops
SAN8:04 amSan Diego
May 17
SAN1:15 pmSan Diego
60h 10m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
$1,094
United Airlines
Jul 22
TRS6:35 amTrieste Ronchi dei Legionari
41h 28m
2 stops
SAN3:03 pmSan Diego
Jul 26
SAN7:41 pmSan Diego
29h 44m
3 stops
TRS10:25 amTrieste Ronchi dei Legionari
$1,179

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 March 14, 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

TriesteSan Diego

TRS - SAN

TRSSAN

Trieste Ronchi dei Legionari

Fri 5/15

6:35 am-8:43 pm

2 stops23h 08m

San Diego

Sat 5/16

6:26 pm-10:25 am

2 stops54h 59m

$913
Quickest round-trip

TriesteSan Diego

TRS - SAN

TRSSAN

Trieste Ronchi dei Legionari

Thu 3/26

6:15 am-4:45 pm

2 stops18h 30m

San Diego

Mon 3/30

11:00 am-1:55 pm

2 stops17h 55m

$1,073

TriesteSan Diego

TRS - SAN

TRSSAN

Trieste Ronchi dei Legionari

Sat 5/16

6:35 am-8:04 am

2 stops34h 29m

San Diego

Sun 5/17

1:15 pm-10:25 am

2 stops60h 10m

$1,094

TriesteSan Diego

TRS - SAN

TRSSAN

Trieste Ronchi dei Legionari

Wed 7/22

11:15 am-5:20 pm

2 stops39h 05m

San Diego

Sun 7/26

4:09 pm-10:15 pm

2 stops21h 06m

$1,104

TriesteSan Diego

TRS - SAN

TRSSAN

Trieste Ronchi dei Legionari

Wed 7/22

6:35 am-3:03 pm

2 stops41h 28m

San Diego

Sun 7/26

7:41 pm-10:25 am

3 stops29h 44m

$1,179

TriesteSan Diego

TRS - SAN

TRSSAN

Trieste Ronchi dei Legionari

Thu 5/14

6:35 am-5:19 pm

2 stops43h 44m

San Diego

Sat 5/16

4:26 pm-10:25 am

2 stops56h 59m

$1,187

TriesteSan Diego

TRS - SAN

TRSSAN

Trieste Ronchi dei Legionari

Wed 5/13

6:35 am-6:41 pm

2 stops21h 06m

San Diego

Sun 5/17

7:15 am-10:25 am

2 stops42h 10m

$1,213

TriesteSan Diego

TRS - SAN

TRSSAN

Trieste Ronchi dei Legionari

Thu 5/14

6:35 am-8:43 pm

2 stops23h 08m

San Diego

Mon 5/18

11:04 am-10:25 am

2 stops38h 21m

$1,304

TriesteSan Diego

TRS - SAN

TRSSAN

Trieste Ronchi dei Legionari

Sat 5/16

6:35 am-10:37 pm

3 stops25h 02m

San Diego

Mon 5/18

11:04 am-10:25 am

2 stops38h 21m

$1,306

TriesteSan Diego

TRS - SAN

TRSSAN

Trieste Ronchi dei Legionari

Fri 3/27

6:25 am-7:48 pm

2 stops21h 23m

San Diego

Tue 3/31

11:00 am-1:45 pm

2 stops17h 45m

$1,332

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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See travel insights to San Diego from

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?

United Airlines is the most popular carrier 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

23h 11m

Direct flights

None
The fastest flight from Trieste to San Diego takes 23h 11m
There are no direct flights from Trieste to San Diego. There are no popular flight routes from Trieste to San Diego.
Search flight deals

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

    San Diego is 6209.3 mi away from Trieste Ronchi dei Legionari. 23h 11m 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
Coronado
Chula Vista
El Cajon
Julian
National City
Poway
Imperial Beach
La Mesa
San Ysidro
Borrego Springs
Alpine
Lemon Grove
Santee

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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