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Cheap flights from California to Trieste from $344

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from California to Trieste departing on 3/24. 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
0 bags

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Find the cheapest flights from California to Trieste

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
3:00 pm - 10:40 pm
LAX
-
TRS
22h 40m
1 stop
Lufthansa Logo
6:15 am - 2:05 pm
TRS
-
LAX
15h 50m
1 stop
$544Lufthansa
Tue, Mar 3 - Tue, Mar 10
Lufthansa Logo
8:35 am - 2:00 pm
LAX
-
TRS
20h 25m
2 stops
Lufthansa Logo
6:15 am - 2:05 pm
TRS
-
LAX
15h 50m
1 stop
$548Lufthansa
Mon, Mar 2 - Tue, Mar 10
ITA Airways Logo
3:20 pm - 6:30 pm
LAX
-
TRS
18h 10m
1 stop
ITA Airways Logo
6:35 am - 2:30 pm
TRS
-
LAX
15h 55m
1 stop
$550ITA Airways
Sun, Mar 1 - Wed, Mar 11
Lufthansa Logo
8:40 am - 2:00 pm
LAX
-
TRS
20h 20m
2 stops
Lufthansa Logo
6:15 am - 5:33 pm
TRS
-
LAX
19h 18m
2 stops
$558Lufthansa
Mon, Mar 2 - Tue, Mar 10
ITA Airways Logo
3:20 pm - 2:30 pm
LAX
-
TRS
14h 10m
1 stop
ITA Airways Logo
1:05 pm - 2:30 pm
TRS
-
LAX
33h 25m
2 stops
$567ITA Airways
Sun, Mar 1 - Wed, Mar 11
Multiple Airlines Logo
7:00 am - 10:15 pm
OAK
-
TRS
30h 15m
2 stops
Multiple Airlines Logo
6:10 am - 7:05 pm
TRS
-
OAK
21h 55m
2 stops
$1,466Multiple Airlines
Tue, May 26 - Tue, Jun 9
Multiple Airlines Logo
12:03 pm - 1:55 pm
SNA
-
TRS
16h 52m
2 stops
Multiple Airlines Logo
11:15 am - 8:40 pm
TRS
-
SNA
18h 25m
2 stops
$1,470Multiple Airlines
Mon, Jul 20 - Tue, Jul 28
United Airlines Logo
6:00 am - 10:25 am
ONT
-
TRS
43h 25m
2 stops
United Airlines Logo
6:35 am - 10:34 pm
TRS
-
ONT
24h 59m
2 stops
$1,600United Airlines
Thu, May 21 - Sat, Jun 6
United Airlines Logo
7:00 am - 10:25 am
ONT
-
TRS
18h 25m
2 stops
United Airlines Logo
6:35 am - 10:28 pm
TRS
-
ONT
24h 53m
2 stops
$1,748United Airlines
Mon, Jul 20 - Tue, Jul 28
Condor Logo
9:10 am - 10:15 pm
SAN
-
TRS
28h 05m
2 stops
Condor Logo
6:00 am - 7:38 pm
TRS
-
SAN
22h 38m
2 stops
$4,974Condor
Thu, May 21 - Fri, Aug 21

ITA Airways flights from California to Trieste

Our best ITA Airways deals on California to Trieste flight tickets
ITA Airways
Mar 1
LAX3:20 pmLos Angeles
18h 10m
1 stop
TRS6:30 pmTrieste Ronchi dei Legionari
Mar 11
TRS6:35 amTrieste Ronchi dei Legionari
15h 55m
1 stop
LAX2:30 pmLos Angeles
$550
ITA Airways
Mar 1
LAX3:20 pmLos Angeles
14h 10m
1 stop
TRS2:30 pmTrieste Ronchi dei Legionari
Mar 11
TRS1:05 pmTrieste Ronchi dei Legionari
33h 25m
2 stops
LAX2:30 pmLos Angeles
$567
ITA Airways
Mar 5
LAX3:20 pmLos Angeles
22h 35m
1 stop
TRS10:55 pmTrieste Ronchi dei Legionari
Mar 10
TRS7:15 pmTrieste Ronchi dei Legionari
27h 15m
1 stop
LAX2:30 pmLos Angeles
$600

TAP AIR PORTUGAL flights from California to Trieste

Our best TAP AIR PORTUGAL deals on California to Trieste flight tickets
TAP AIR PORTUGAL
Feb 5
LAX4:45 pmLos Angeles
21h 10m
2 stops
TRS10:55 pmTrieste Ronchi dei Legionari
Feb 9
TRS11:15 amTrieste Ronchi dei Legionari
36h 45m
2 stops
LAX3:00 pmLos Angeles
$2,443
TAP AIR PORTUGAL
Feb 5
LAX4:45 pmLos Angeles
21h 10m
2 stops
TRS10:55 pmTrieste Ronchi dei Legionari
Feb 9
TRS11:15 amTrieste Ronchi dei Legionari
36h 45m
2 stops
LAX3:00 pmLos Angeles
$2,503
TAP AIR PORTUGAL
Feb 5
LAX4:45 pmLos Angeles
40h 45m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Feb 9
TRS11:15 amTrieste Ronchi dei Legionari
36h 45m
2 stops
LAX3:00 pmLos Angeles
$2,582

momondo Fare Finder

 
Customize your flight search to find flights from California 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, momondo users made 832,500 searches. Data last updated February 4, 2026.
Use the filters below to find and compare flights from California to Trieste that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Los AngelesTrieste

LAX - TRS

LAXTRS

Los Angeles

Tue 3/3

3:00 pm-10:40 pm

1 stop22h 40m

Trieste Ronchi dei Legionari

Tue 3/10

6:15 am-2:05 pm

1 stop15h 50m

$544

Los AngelesTrieste

LAX - TRS

LAXTRS

Los Angeles

Mon 3/2

8:35 am-2:00 pm

2 stops20h 25m

Trieste Ronchi dei Legionari

Tue 3/10

6:15 am-2:05 pm

1 stop15h 50m

$548

Los AngelesTrieste

LAX - TRS

LAXTRS

Los Angeles

Sun 3/1

3:20 pm-6:30 pm

1 stop18h 10m

Trieste Ronchi dei Legionari

Wed 3/11

6:35 am-2:30 pm

1 stop15h 55m

$550

Los AngelesTrieste

LAX - TRS

LAXTRS

Los Angeles

Mon 3/2

8:40 am-2:00 pm

2 stops20h 20m

Trieste Ronchi dei Legionari

Tue 3/10

6:15 am-5:33 pm

2 stops19h 18m

$558

Los AngelesTrieste

LAX - TRS

LAXTRS

Los Angeles

Sun 3/1

3:20 pm-2:30 pm

1 stop14h 10m

Trieste Ronchi dei Legionari

Wed 3/11

1:05 pm-2:30 pm

2 stops33h 25m

$567

OaklandTrieste

OAK - TRS

OAKTRS

Oakland

Tue 5/26

7:00 am-10:15 pm

2 stops30h 15m

Trieste Ronchi dei Legionari

Tue 6/9

6:10 am-7:05 pm

2 stops21h 55m

$1,466

Santa AnaTrieste

SNA - TRS

SNATRS

Santa Ana J. Wayne/Orange Cnty

Mon 7/20

12:03 pm-1:55 pm

2 stops16h 52m

Trieste Ronchi dei Legionari

Tue 7/28

11:15 am-8:40 pm

2 stops18h 25m

$1,470

OntarioTrieste

ONT - TRS

ONTTRS

Ontario

Thu 5/21

6:00 am-10:25 am

2 stops43h 25m

Trieste Ronchi dei Legionari

Sat 6/6

6:35 am-10:34 pm

2 stops24h 59m

$1,600

OntarioTrieste

ONT - TRS

ONTTRS

Ontario

Mon 7/20

7:00 am-10:25 am

2 stops18h 25m

Trieste Ronchi dei Legionari

Tue 7/28

6:35 am-10:28 pm

2 stops24h 53m

$1,748

San DiegoTrieste

SAN - TRS

SANTRS

San Diego

Thu 5/21

9:10 am-10:15 pm

2 stops28h 05m

Trieste Ronchi dei Legionari

Fri 8/21

6:00 am-7:38 pm

2 stops22h 38m

$4,974

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Trieste from

How to get the cheapest flight ticket from California to Trieste

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

Can stopping save me money on California to Trieste flights?

You could potentially save up to 30% on your flight if you consider stops on a California to Trieste flight.

Cheap California to Trieste flight deals and tips

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

Fastest flight time

13h 40m

Direct flights

None
The fastest flight from California to Trieste takes 13h 40m
There are no direct flights from California to Trieste. There are no popular flight routes from California to Trieste.
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  • When did momondo last update prices for flights from California to Trieste Ronchi dei Legionari Airport?

    Prices for flights from California to Trieste Ronchi dei Legionari Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from California to Trieste Ronchi dei Legionari Airport?

  • How old do you have to be to fly from California to Trieste Ronchi dei Legionari 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 California to Trieste Ronchi dei Legionari Airport.

  • What documentation or ID do you need to fly to Trieste Ronchi dei Legionari Airport?

    The travel and health documents required for your trip to Trieste Ronchi dei Legionari Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Trieste Ronchi dei Legionari Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from California to Trieste

Compare and see reviews for airlines that fly from California to Trieste with momondo
Airline
Rating
Free Cancellation
Price
ITA AirwaysPriceFrom $579Free CancellationRating
6.7
1,145 reviews
Search ITA Airways flights
LufthansaPriceFrom $691Free CancellationRating
6.8
7,759 reviews
Search Lufthansa flights

Traveling to a place near Trieste?

Book flights to Trieste if you plan to visit one of these locations
Udine
Grado

Why use momondo?

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

It is quick and easy to find California to Trieste 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 Trieste that suits you.

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

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

How can momondo help me find flights from California to Trieste?

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 California to Trieste.

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