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

ITA Airways, Lufthansa, and TAP AIR PORTUGAL 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 San Diego to Venice Marco Polo Airport is 13h 30m on average, while flying from Los Angeles to Venice Marco Polo Airport is 13h 35m on average. Venice Marco Polo Airport is the most popular airport in Trieste.

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.

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 July 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.

$267 Cheap Flights from California to Trieste in 2025

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Find the cheapest flights from California to Trieste

Round-trip

One-way

Last minute

Cheap round-trip flights

3:15 pm - 10:55 pmSFO-TRS

22h 40m1 stop

6:35 am - 1:25 pmTRS-SFO

15h 50m1 stop

$569ITA Airways

Find Deal

Sun, Sep 14 - Tue, Sep 23

7:00 am - 2:30 pmLAX-TRS

22h 30m2 stops

11:15 am - 1:15 pmTRS-LAX

35h 00m1 stop

$569ITA Airways

Find Deal

Mon, Aug 11 - Mon, Aug 18

2:40 pm - 10:35 pmSFO-TRS

22h 55m1 stop

6:30 am - 3:28 pmTRS-SFO

17h 58m2 stops

$613

Find Deal

Sun, Sep 14 - Tue, Sep 23

2:40 pm - 10:35 pmSFO-TRS

22h 55m1 stop

6:30 am - 5:07 pmTRS-SFO

19h 37m2 stops

$637Lufthansa

Find Deal

Sun, Sep 14 - Tue, Sep 23

9:05 pm - 10:35 pmSFO-TRS

16h 30m2 stops

6:30 am - 3:28 pmTRS-SFO

17h 58m2 stops

$639

Find Deal

Sun, Sep 14 - Tue, Sep 23

6:40 pm - 10:25 pmLAX-TRS

18h 45m1 stop

6:30 am - 4:55 pmTRS-LAX

19h 25m1 stop

$646Lufthansa

Find Deal

Mon, Sep 8 - Mon, Sep 15

12:10 am - 6:35 pmLAX-TRS

33h 25m2 stops

6:35 am - 10:25 pmTRS-LAX

24h 50m2 stops

$1,060Turkish Airlines

Find Deal

Wed, Sep 10 - Fri, Sep 19

7:55 pm - 6:35 pmLAX-TRS

37h 40m2 stops

3:15 pm - 6:00 pmTRS-LAX

35h 45m2 stops

$1,185Turkish Airlines

Find Deal

Wed, Sep 24 - Sun, Oct 5

7:20 pm - 6:35 pmSFO-TRS

38h 15m2 stops

3:15 pm - 4:45 pmTRS-SFO

34h 30m3 stops

$1,265TAP AIR PORTUGAL

Find Deal

Sat, Aug 30 - Mon, Sep 15

6:45 pm - 6:30 pmSFO-TRS

38h 45m3 stops

11:15 am - 2:30 pmTRS-SFO

36h 15m2 stops

$2,029TAP AIR PORTUGAL

Find Deal

Tue, Aug 5 - Sun, Aug 10

Lufthansa flights from California to Trieste

Our best Lufthansa deals on California to Trieste flight tickets

Lufthansa

Jul 22

LAX2:55 pmLos Angeles

22h 40m

1 stop

TRS10:35 pmTrieste Ronchi dei Legionari

Aug 19

TRS2:45 pmTrieste Ronchi dei Legionari

35h 10m

1 stop

LAX4:55 pmLos Angeles

$632

Find similar

Lufthansa

Sep 14

SFO2:40 pmSan Francisco

22h 55m

1 stop

TRS10:35 pmTrieste Ronchi dei Legionari

Sep 23

TRS6:30 amTrieste Ronchi dei Legionari

19h 37m

2 stops

SFO5:07 pmSan Francisco

$637

Find similar

Lufthansa

Sep 8

LAX6:40 pmLos Angeles

18h 45m

1 stop

TRS10:25 pmTrieste Ronchi dei Legionari

Sep 15

TRS6:30 amTrieste Ronchi dei Legionari

19h 25m

1 stop

LAX4:55 pmLos Angeles

$646

Find similar

ITA Airways flights from California to Trieste

Our best ITA Airways deals on California to Trieste flight tickets

ITA Airways

Sep 14

SFO3:15 pmSan Francisco

22h 40m

1 stop

TRS10:55 pmTrieste Ronchi dei Legionari

Sep 23

TRS6:35 amTrieste Ronchi dei Legionari

15h 50m

1 stop

SFO1:25 pmSan Francisco

$569

Find similar

ITA Airways

Aug 11

LAX3:15 pmLos Angeles

22h 40m

1 stop

TRS10:55 pmTrieste Ronchi dei Legionari

Aug 18

TRS7:15 pmTrieste Ronchi dei Legionari

27h 00m

1 stop

LAX1:15 pmLos Angeles

$571

Find similar

ITA Airways

Aug 11

LAX6:40 amLos Angeles

18h 45m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

Aug 18

TRS7:15 pmTrieste Ronchi dei Legionari

30h 58m

2 stops

LAX5:13 pmLos Angeles

$574

Find similar

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 40% 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

Best Price Found	$267
Fastest flight time	14h 05m
Direct flights	None
Airports in Trieste	1 airport

The best one-way flight to Trieste from California in the past 72 hours is $267. The best round-trip flight deal from California to Trieste found on momondo in the last 72 hours is $569.

The fastest flight from California to Trieste takes 14h 05m

There are no direct flights from California to Trieste. Popular non-direct routes for this connection are San Francisco Airport - Trieste Ronchi dei Legionari Airport, San Jose Airport - Trieste Ronchi dei Legionari Airport and Los Angeles Airport - Trieste Ronchi dei Legionari Airport.

There is 1 airport near Trieste: Trieste Ronchi dei Legionari (TRS)

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 July 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 $599	Free Cancellation	Rating 6.6 1,001 reviews		Search ITA Airways flights
Lufthansa	PriceFrom $663	Free Cancellation	Rating 6.8 7,205 reviews		Search Lufthansa flights

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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.

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Cheap flights from California to Trieste from $267

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 9/4. 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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Filter for what you want

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Find the cheapest flights from California to Trieste

Cheap round-trip flights

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Lufthansa flights from California to Trieste

Our best Lufthansa deals on California to Trieste flight tickets

ITA Airways flights from California to Trieste

Our best ITA Airways deals on California to Trieste flight tickets

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 40% 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?

ITA Airways, Lufthansa, and TAP AIR PORTUGAL 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

Best Price Found

Fastest flight time

Direct flights

Airports in Trieste

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