How long does it take to fly to Trieste?

Average flight duration from California to Trieste depends on which airport you fly into and out of. Flying from Los Angeles to Venice Marco Polo Airport is 14h on average, while flying from San Francisco to Venice Marco Polo Airport is 14h 05m on average. Venice Marco Polo Airport is the most popular airport in Trieste.

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?

As of August 2026, there are 2 operators available to choose from 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.

$402 Cheap Flights from California to Trieste in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from California to Trieste

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:20 pm - 2:30 pmSFO San Francisco-TRS Trieste Ronchi dei Legionari

35h 10m2 stops Los Angeles Rome Fiumicino

6:35 am - 1:05 pmTRS Trieste Ronchi dei Legionari-SFO San Francisco

15h 30m1 stop Rome Fiumicino

$803Multiple Airlines

Sat, Nov 7 - Tue, Nov 17

6:20 pm - 2:30 pmSFO San Francisco-TRS Trieste Ronchi dei Legionari

35h 10m2 stops Los Angeles Rome Fiumicino

7:15 pm - 9:12 pmTRS Trieste Ronchi dei Legionari-SFO San Francisco

34h 57m2 stops Rome Fiumicino Los Angeles

$808Multiple Airlines

Sat, Nov 7 - Tue, Nov 17

3:15 pm - 2:30 pmLAX Los Angeles-TRS Trieste Ronchi dei Legionari

14h 15m1 stop Rome Fiumicino

6:35 am - 1:15 pmTRS Trieste Ronchi dei Legionari-LAX Los Angeles

15h 40m1 stop Rome Fiumicino

$828ITA Airways

Wed, Oct 14 - Wed, Oct 21

3:15 pm - 11:25 amLAX Los Angeles-TRS Trieste Ronchi dei Legionari

35h 10m1 stop Rome Fiumicino

6:35 am - 1:30 pmTRS Trieste Ronchi dei Legionari-LAX Los Angeles

15h 55m1 stop Rome Fiumicino

$834ITA Airways

Fri, Oct 23 - Sun, Nov 8

3:15 pm - 10:55 pmLAX Los Angeles-TRS Trieste Ronchi dei Legionari

22h 40m1 stop Rome Fiumicino

11:15 am - 1:15 pmTRS Trieste Ronchi dei Legionari-LAX Los Angeles

35h 00m1 stop Rome Fiumicino

$841ITA Airways

Tue, Sep 15 - Mon, Sep 21

7:00 am - 2:00 pmLAX Los Angeles-TRS Trieste Ronchi dei Legionari

22h 00m2 stops Newark Frankfurt am Main

6:20 am - 1:10 pmTRS Trieste Ronchi dei Legionari-LAX Los Angeles

15h 50m1 stop Frankfurt am Main

$871Lufthansa

Wed, Oct 14 - Tue, Oct 20

7:00 am - 2:00 pmLAX Los Angeles-TRS Trieste Ronchi dei Legionari

22h 00m2 stops Newark Frankfurt am Main

6:10 am - 1:10 pmTRS Trieste Ronchi dei Legionari-LAX Los Angeles

16h 00m1 stop Frankfurt am Main

$871Lufthansa

Wed, Oct 14 - Wed, Oct 21

10:06 am - 2:30 pmSFO San Francisco-TRS Trieste Ronchi dei Legionari

19h 24m2 stops Los Angeles Rome Fiumicino

6:35 am - 1:15 pmTRS Trieste Ronchi dei Legionari-SFO San Francisco

15h 40m1 stop Rome Fiumicino

$871Multiple Airlines

Wed, Sep 23 - Wed, Oct 14

5:37 pm - 2:30 pmSFO San Francisco-TRS Trieste Ronchi dei Legionari

35h 53m2 stops Los Angeles Rome Fiumicino

6:35 am - 1:15 pmTRS Trieste Ronchi dei Legionari-SFO San Francisco

15h 40m1 stop Rome Fiumicino

$874Multiple Airlines

Tue, Sep 22 - Wed, Sep 30

12:06 pm - 2:00 pmSNA Santa Ana J. Wayne/Orange Cnty-TRS Trieste Ronchi dei Legionari

40h 54m2 stops Houston George Bush Intcntl Frankfurt am Main

6:20 am - 6:32 pmTRS Trieste Ronchi dei Legionari-SNA Santa Ana J. Wayne/Orange Cnty

21h 12m2 stops Frankfurt am Main San Francisco

$964Lufthansa

Tue, Sep 29 - Tue, Oct 6

Cheap last minute flights

Enter your travel dates to find the best prices.

3:15 pm - 10:25 amLAX Los Angeles-TRS Trieste Ronchi dei Legionari

34h 10m1 stop Rome Fiumicino

11:15 am - 1:15 pmTRS Trieste Ronchi dei Legionari-LAX Los Angeles

35h 00m1 stop Rome Fiumicino

$765ITA Airways

Fri, Aug 21 - Tue, Aug 25

3:15 pm - 10:25 amLAX Los Angeles-TRS Trieste Ronchi dei Legionari

34h 10m1 stop Rome Fiumicino

7:15 pm - 1:15 pmTRS Trieste Ronchi dei Legionari-LAX Los Angeles

27h 00m1 stop Rome Fiumicino

$792ITA Airways

Fri, Aug 21 - Tue, Aug 25

3:15 pm - 10:55 pmLAX Los Angeles-TRS Trieste Ronchi dei Legionari

22h 40m1 stop Rome Fiumicino

6:35 am - 1:15 pmTRS Trieste Ronchi dei Legionari-LAX Los Angeles

15h 40m1 stop Rome Fiumicino

$815ITA Airways

Fri, Aug 21 - Fri, Aug 28

6:40 pm - 9:55 pmLAX Los Angeles-TRS Trieste Ronchi dei Legionari

18h 15m1 stop Frankfurt am Main

6:20 am - 6:04 pmTRS Trieste Ronchi dei Legionari-LAX Los Angeles

20h 44m2 stops Frankfurt am Main San Francisco

$823Lufthansa

Fri, Aug 21 - Tue, Aug 25

5:30 pm - 9:55 pmLAX Los Angeles-TRS Trieste Ronchi dei Legionari

19h 25m2 stops Munich Franz Josef Strauss Frankfurt am Main

6:20 am - 5:37 pmTRS Trieste Ronchi dei Legionari-LAX Los Angeles

20h 17m2 stops Frankfurt am Main Chicago O'Hare Intl

$841Lufthansa

Fri, Aug 21 - Tue, Aug 25

3:20 pm - 10:25 pmLAX Los Angeles-TRS Trieste Ronchi dei Legionari

22h 05m2 stops Chicago O'Hare Intl Frankfurt am Main

6:10 am - 1:10 pmTRS Trieste Ronchi dei Legionari-LAX Los Angeles

16h 00m1 stop Frankfurt am Main

$844Lufthansa

Mon, Aug 24 - Sun, Aug 30

3:20 pm - 10:15 pmLAX Los Angeles-TRS Trieste Ronchi dei Legionari

21h 55m2 stops Chicago O'Hare Intl Frankfurt am Main

6:10 am - 4:20 pmTRS Trieste Ronchi dei Legionari-LAX Los Angeles

19h 10m1 stop Frankfurt am Main

$844Lufthansa

Sun, Aug 23 - Mon, Aug 31

3:15 pm - 10:55 pmSFO San Francisco-TRS Trieste Ronchi dei Legionari

22h 40m1 stop Rome Fiumicino

6:35 am - 1:15 pmTRS Trieste Ronchi dei Legionari-SFO San Francisco

15h 40m1 stop Rome Fiumicino

$849ITA Airways

Fri, Aug 21 - Wed, Aug 26

3:15 pm - 10:55 pmSFO San Francisco-TRS Trieste Ronchi dei Legionari

22h 40m1 stop Rome Fiumicino

6:35 am - 1:15 pmTRS Trieste Ronchi dei Legionari-SFO San Francisco

15h 40m1 stop Rome Fiumicino

$851ITA Airways

Fri, Aug 21 - Wed, Aug 26

7:13 pm - 10:25 amONT Ontario-TRS Trieste Ronchi dei Legionari

54h 12m2 stops San Francisco Rome Fiumicino

6:35 am - 8:53 pmTRS Trieste Ronchi dei Legionari-ONT Ontario

23h 18m2 stops Rome Fiumicino Denver Intl

$3,360United Airlines

Fri, Aug 21 - Tue, Aug 25

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KLM flights from California to Trieste

Our best KLM deals on California to Trieste flight tickets

KLM

Oct 23

LAX7:40 amLos Angeles

21h 50m

2 stops

TRS2:30 pmTrieste Ronchi dei Legionari

Nov 8

TRS6:35 amTrieste Ronchi dei Legionari

26h 20m

2 stops

LAX11:55 pmLos Angeles

$902

KLM

Aug 30

ONT7:05 amOntario

26h 25m

2 stops

TRS6:30 pmTrieste Ronchi dei Legionari

Sep 9

TRS6:35 amTrieste Ronchi dei Legionari

22h 49m

2 stops

ONT8:24 pmOntario

$1,732

ITA Airways flights from California to Trieste

Our best ITA Airways deals on California to Trieste flight tickets

ITA Airways

Aug 21

LAX3:15 pmLos Angeles

34h 10m

1 stop

TRS10:25 amTrieste Ronchi dei Legionari

Aug 25

TRS11:15 amTrieste Ronchi dei Legionari

35h 00m

1 stop

LAX1:15 pmLos Angeles

$765

ITA Airways

Aug 21

LAX3:15 pmLos Angeles

34h 10m

1 stop

TRS10:25 amTrieste Ronchi dei Legionari

Aug 25

TRS7:15 pmTrieste Ronchi dei Legionari

27h 00m

1 stop

LAX1:15 pmLos Angeles

$792

ITA Airways

Aug 21

LAX3:15 pmLos Angeles

22h 40m

1 stop

TRS10:55 pmTrieste Ronchi dei Legionari

Aug 28

TRS6:35 amTrieste Ronchi dei Legionari

15h 40m

1 stop

LAX1:15 pmLos Angeles

$815

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoTrieste

SFO San Francisco - TRS Trieste Ronchi dei Legionari

SFOTRS

San Francisco

Sat 11/7

6:20 pm-2:30 pm

2 stops35h 10m

Trieste Ronchi dei Legionari

Tue 11/17

6:35 am-1:05 pm

1 stop15h 30m

$803

San FranciscoTrieste

SFO San Francisco - TRS Trieste Ronchi dei Legionari

SFOTRS

San Francisco

Sat 11/7

6:20 pm-2:30 pm

2 stops35h 10m

Trieste Ronchi dei Legionari

Tue 11/17

7:15 pm-9:12 pm

2 stops34h 57m

$808

Quickest round-trip

Los AngelesTrieste

LAX Los Angeles - TRS Trieste Ronchi dei Legionari

LAXTRS

Los Angeles

Wed 10/14

3:15 pm-2:30 pm

1 stop14h 15m

Trieste Ronchi dei Legionari

Wed 10/21

6:35 am-1:15 pm

1 stop15h 40m

$828

Los AngelesTrieste

LAX Los Angeles - TRS Trieste Ronchi dei Legionari

LAXTRS

Los Angeles

Fri 10/23

3:15 pm-11:25 am

1 stop35h 10m

Trieste Ronchi dei Legionari

Sun 11/8

6:35 am-1:30 pm

1 stop15h 55m

$834

Los AngelesTrieste

LAX Los Angeles - TRS Trieste Ronchi dei Legionari

LAXTRS

Los Angeles

Tue 9/15

3:15 pm-10:55 pm

1 stop22h 40m

Trieste Ronchi dei Legionari

Mon 9/21

11:15 am-1:15 pm

1 stop35h 00m

$841

Los AngelesTrieste

LAX Los Angeles - TRS Trieste Ronchi dei Legionari

LAXTRS

Los Angeles

Wed 10/14

7:00 am-2:00 pm

2 stops22h 00m

Trieste Ronchi dei Legionari

Tue 10/20

6:20 am-1:10 pm

1 stop15h 50m

$871

Los AngelesTrieste

LAX Los Angeles - TRS Trieste Ronchi dei Legionari

LAXTRS

Los Angeles

Wed 10/14

7:00 am-2:00 pm

2 stops22h 00m

Trieste Ronchi dei Legionari

Wed 10/21

6:10 am-1:10 pm

1 stop16h 00m

$871

San FranciscoTrieste

SFO San Francisco - TRS Trieste Ronchi dei Legionari

SFOTRS

San Francisco

Wed 9/23

10:06 am-2:30 pm

2 stops19h 24m

Trieste Ronchi dei Legionari

Wed 10/14

6:35 am-1:15 pm

1 stop15h 40m

$871

San FranciscoTrieste

SFO San Francisco - TRS Trieste Ronchi dei Legionari

SFOTRS

San Francisco

Tue 9/22

5:37 pm-2:30 pm

2 stops35h 53m

Trieste Ronchi dei Legionari

Wed 9/30

6:35 am-1:15 pm

1 stop15h 40m

$874

Santa AnaTrieste

SNA Santa Ana J. Wayne/Orange Cnty - TRS Trieste Ronchi dei Legionari

SNATRS

Santa Ana J. Wayne/Orange Cnty

Tue 9/29

12:06 pm-2:00 pm

2 stops40h 54m

Trieste Ronchi dei Legionari

Tue 10/6

6:20 am-6:32 pm

2 stops21h 12m

$964

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Airlines

Other information

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

TAP AIR PORTUGAL, KLM, and Lufthansa are the most popular carriers operating from California to Trieste Ronchi dei Legionari

What airlines fly to Trieste?

Condor, United Airlines and British Airways are the top three most popular airlines that fly to Trieste from California according to our data. Condor is the first choice among our users, with 34% of people opting to fly with this airline when traveling to Trieste. Keep in mind that there are 16 different airlines that fly to Trieste on a routine basis, so you have a few additional options to choose from.

Cheap California to Trieste flight deals and tips

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

Best Price Found	$402
Fastest flight time	14h 10m
Direct flights	None

The best one-way flight to Trieste from California in the past 72 hours is $402. The best round-trip flight deal from California to Trieste found on momondo in the last 72 hours is $803.

The fastest flight from California to Trieste takes 14h 10m

There are no direct flights from California to Trieste. There are no popular flight routes from California to Trieste.

Search flight deals

Frequently asked questions about flying from California to Trieste

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?
As of August 2026, there are 2 operators available to choose from 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
Lufthansa	PriceFrom $499	Free Cancellation	Rating 6.8 8,204 reviews		Search Lufthansa flights
ITA Airways	PriceFrom $547	Free Cancellation	Rating 6.7 1,322 reviews		Search ITA Airways flights

Grado

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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.

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

Price alerts on flights to Trieste from California are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.