What airlines fly to Trieste?

United Airlines, Lufthansa and British Airways are the top three most popular airlines that fly to Trieste from California according to our data. United Airlines is the first choice among our users, with 27% of people opting to fly with this airline when traveling to Trieste. Keep in mind that there are 18 different airlines that fly to Trieste on a routine basis, so you have a few additional options to choose from.

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

Lufthansa, ITA Airways, and United Airlines are the most popular carriers operating from California to Trieste Ronchi dei Legionari

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 13h 45m on average, while flying from San Diego to Venice Marco Polo Airport is 16h 02m 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 October 2025, 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.

$489 Cheap Flights from California to Trieste in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from California to Trieste

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:00 pm - 2:00 pmLAX-TRS

14h 00m1 stop

6:15 am - 1:05 pmTRS-LAX

15h 50m1 stop

$551Lufthansa

Find Deal

Tue, Nov 25 - Thu, Dec 11

3:00 pm - 10:40 pmLAX-TRS

22h 40m1 stop

6:15 am - 5:14 pmTRS-LAX

19h 59m2 stops

$560Lufthansa

Find Deal

Tue, Nov 25 - Thu, Dec 11

6:55 am - 2:00 pmLAX-TRS

22h 05m2 stops

6:15 am - 5:14 pmTRS-LAX

19h 59m2 stops

$572Multiple Airlines

Find Deal

Tue, Nov 25 - Thu, Dec 11

6:30 am - 2:05 pmLAX-TRS

22h 35m2 stops

3:00 pm - 1:05 pmTRS-LAX

31h 05m1 stop

$606Multiple Airlines

Find Deal

Fri, Dec 5 - Sun, Dec 14

3:20 pm - 10:55 pmLAX-TRS

22h 35m1 stop

6:35 am - 1:30 pmTRS-LAX

15h 55m1 stop

$619ITA Airways

Find Deal

Fri, Dec 5 - Sun, Dec 14

4:20 pm - 2:30 pmLAX-TRS

14h 10m1 stop

7:15 pm - 2:20 pmTRS-LAX

27h 05m1 stop

$666ITA Airways

Find Deal

Sat, Mar 14 - Fri, Mar 27

1:05 pm - 2:30 pmLAX-TRS

40h 25m2 stops

6:35 am - 4:50 pmTRS-LAX

43h 15m2 stops

$987Turkish Airlines

Find Deal

Sun, Nov 16 - Mon, Nov 24

7:45 pm - 6:30 pmLAX-TRS

62h 45m2 stops

6:35 am - 11:50 amTRS-LAX

37h 15m2 stops

$1,006Turkish Airlines

Find Deal

Sat, Mar 14 - Sat, Mar 28

7:05 am - 10:55 pmONT-TRS

30h 50m2 stops

6:35 am - 11:04 pmTRS-ONT

25h 29m2 stops

$1,018KLM

Find Deal

Wed, Nov 12 - Sun, Nov 16

7:05 am - 10:55 pmONT-TRS

30h 50m2 stops

6:35 am - 11:04 pmTRS-ONT

25h 29m2 stops

$1,048KLM

Find Deal

Wed, Nov 12 - Sun, Nov 16

ITA Airways flights from California to Trieste

Our best ITA Airways deals on California to Trieste flight tickets

ITA Airways

Dec 5

LAX3:20 pmLos Angeles

22h 35m

1 stop

TRS10:55 pmTrieste Ronchi dei Legionari

Dec 14

TRS6:35 amTrieste Ronchi dei Legionari

15h 55m

1 stop

LAX1:30 pmLos Angeles

$619

Find similar

ITA Airways

Mar 14

LAX4:20 pmLos Angeles

14h 10m

1 stop

TRS2:30 pmTrieste Ronchi dei Legionari

Mar 27

TRS7:15 pmTrieste Ronchi dei Legionari

27h 05m

1 stop

LAX2:20 pmLos Angeles

$666

Find similar

ITA Airways

Mar 14

LAX4:20 pmLos Angeles

14h 10m

1 stop

TRS2:30 pmTrieste Ronchi dei Legionari

Mar 27

TRS7:35 amTrieste Ronchi dei Legionari

38h 45m

2 stops

LAX2:20 pmLos Angeles

$688

Find similar

Lufthansa flights from California to Trieste

Our best Lufthansa deals on California to Trieste flight tickets

Lufthansa

Nov 25

LAX3:00 pmLos Angeles

14h 00m

1 stop

TRS2:00 pmTrieste Ronchi dei Legionari

Dec 11

TRS6:15 amTrieste Ronchi dei Legionari

15h 50m

1 stop

LAX1:05 pmLos Angeles

$551

Find similar

Lufthansa

Nov 25

LAX3:00 pmLos Angeles

22h 40m

1 stop

TRS10:40 pmTrieste Ronchi dei Legionari

Dec 11

TRS6:15 amTrieste Ronchi dei Legionari

19h 59m

2 stops

LAX5:14 pmLos Angeles

$560

Find similar

Lufthansa

Nov 19

LAX2:22 pmLos Angeles

23h 18m

2 stops

TRS10:40 pmTrieste Ronchi dei Legionari

Dec 8

TRS2:40 pmTrieste Ronchi dei Legionari

31h 25m

1 stop

LAX1:05 pmLos Angeles

$581

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Los AngelesTrieste

LAX - TRS

LAXTRS

Los Angeles

Tue 11/25

3:00 pm-2:00 pm

1 stop14h 00m

Trieste Ronchi dei Legionari

Thu 12/11

6:15 am-1:05 pm

1 stop15h 50m

$551

Los AngelesTrieste

LAX - TRS

LAXTRS

Los Angeles

Tue 11/25

3:00 pm-10:40 pm

1 stop22h 40m

Trieste Ronchi dei Legionari

Thu 12/11

6:15 am-5:14 pm

2 stops19h 59m

$560

Los AngelesTrieste

LAX - TRS

LAXTRS

Los Angeles

Tue 11/25

6:55 am-2:00 pm

2 stops22h 05m

Trieste Ronchi dei Legionari

Thu 12/11

6:15 am-5:14 pm

2 stops19h 59m

$572

Los AngelesTrieste

LAX - TRS

LAXTRS

Los Angeles

Fri 12/5

6:30 am-2:05 pm

2 stops22h 35m

Trieste Ronchi dei Legionari

Sun 12/14

3:00 pm-1:05 pm

1 stop31h 05m

$606

Los AngelesTrieste

LAX - TRS

LAXTRS

Los Angeles

Fri 12/5

3:20 pm-10:55 pm

1 stop22h 35m

Trieste Ronchi dei Legionari

Sun 12/14

6:35 am-1:30 pm

1 stop15h 55m

$619

Los AngelesTrieste

LAX - TRS

LAXTRS

Los Angeles

Sat 3/14

4:20 pm-2:30 pm

1 stop14h 10m

Trieste Ronchi dei Legionari

Fri 3/27

7:15 pm-2:20 pm

1 stop27h 05m

$666

Los AngelesTrieste

LAX - TRS

LAXTRS

Los Angeles

Sun 11/16

1:05 pm-2:30 pm

2 stops40h 25m

Trieste Ronchi dei Legionari

Mon 11/24

6:35 am-4:50 pm

2 stops43h 15m

$987

Los AngelesTrieste

LAX - TRS

LAXTRS

Los Angeles

Sat 3/14

7:45 pm-6:30 pm

2 stops62h 45m

Trieste Ronchi dei Legionari

Sat 3/28

6:35 am-11:50 am

2 stops37h 15m

$1,006

OntarioTrieste

ONT - TRS

ONTTRS

Ontario

Wed 11/12

7:05 am-10:55 pm

2 stops30h 50m

Trieste Ronchi dei Legionari

Sun 11/16

6:35 am-11:04 pm

2 stops25h 29m

$1,018

OntarioTrieste

ONT - TRS

ONTTRS

Ontario

Wed 11/12

7:05 am-10:55 pm

2 stops30h 50m

Trieste Ronchi dei Legionari

Sun 11/16

6:35 am-11:04 pm

2 stops25h 29m

$1,048

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

Prices

Airlines

Other information

What is the cheapest day to depart on your flight to Trieste?

The cheapest day to depart on your flight to Trieste is on a Sunday when prices can be found for as low as $924. This is often the case because there is less demand to fly during this day of the week. Flights from California to Trieste on a Friday will generally be more expensive and average around $1,554. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Trieste?

Our most recent data shows that the best time of day to fly to Trieste is in the afternoon. Flights from California to Trieste during this time can be as low as $1,025. Flights to Trieste are more costly in the morning, with an average ticket price of $1,446. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

Direct flights	None

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

Search flight deals

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 October 2025, 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
ITA Airways	PriceFrom $579	Free Cancellation	Rating 6.7 1,078 reviews		Search ITA Airways flights
Lufthansa	PriceFrom $663	Free Cancellation	Rating 6.8 7,541 reviews		Search Lufthansa flights

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.

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.

An easier way to manage your Trieste trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sat 11/29

Sat 12/6

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Italy

Fly your favorite airline to Trieste

Cheap flights from California to Trieste from $489

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 1/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from California to Trieste

Cheap round-trip flights

Cheap one-way flights

ITA Airways flights from California to Trieste

Our best ITA Airways deals on California to Trieste flight tickets

Lufthansa flights from California to Trieste

Our best Lufthansa deals on California to Trieste flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from California to Trieste that are best for you.

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

What is the cheapest day to depart on your flight to Trieste?

What is the cheapest time of day to depart on your flight to Trieste?

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.

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

Lufthansa, ITA Airways, and United Airlines are the most popular carriers operating from California to Trieste Ronchi dei Legionari

What airlines fly to Trieste?

How long does it take to fly to Trieste?

Cheap California to Trieste flight deals and tips

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

Direct flights

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

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?

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

Best airlines flying from California to Trieste

Compare and see reviews for airlines that fly from California to Trieste with momondo

Traveling to a place near Trieste?

Why use momondo?

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

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

How can momondo help me find flights 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?

An easier way to manage your Trieste trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Italy

Fly your favorite airline to Trieste

Airlines are sorted and displayed according to clicks in the past 7 days on momondo