What airlines fly to California?

United Airlines, Lufthansa and ITA Airways are the top three most popular airlines that fly to California from Trieste according to our data. United Airlines is the first choice among our users, with 29% of people opting to fly with this airline when traveling to California. Keep in mind that there are 8 different airlines that fly to California on a routine basis, so you have a few additional options to choose from.

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

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

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

Prices for flights from Trieste Ronchi dei Legionari Airport to California refresh daily.

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

There is 1 operator available for flights from Trieste Ronchi dei Legionari Airport to California as of May 2026.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Trieste Ronchi dei Legionari Airport to California.

What documentation or ID do you need to fly to California?

The required travel and health documents for your California trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at California. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$456 Cheap Flights from Trieste to California in 2026

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 Trieste to California

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:35 am - 1:15 pm

TRS

SFO

15h 40m

1 stop

3:15 pm - 6:30 pm

SFO

TRS

18h 15m

1 stop

$459ITA Airways

Wed, Sep 9 - Wed, Sep 23

6:35 am - 1:15 pm

TRS

SFO

15h 40m

1 stop

3:15 pm - 10:55 pm

SFO

TRS

22h 40m

1 stop

$557ITA Airways

Tue, Sep 8 - Tue, Sep 22

6:10 am - 7:50 pm

TRS

SFO

22h 40m

1 stop

7:15 pm - 10:15 pm

SFO

TRS

18h 00m

1 stop

$568Lufthansa

Sun, May 31 - Sat, Jun 6

6:10 am - 1:10 pm

TRS

LAX

16h 00m

1 stop

6:40 pm - 10:15 pm

LAX

TRS

18h 35m

1 stop

$591Lufthansa

Fri, May 29 - Tue, Jun 2

6:10 am - 1:10 pm

TRS

LAX

16h 00m

1 stop

6:40 pm - 10:15 pm

LAX

TRS

18h 35m

1 stop

$592Lufthansa

Fri, May 29 - Tue, Jun 2

7:15 pm - 1:15 pm

TRS

LAX

27h 00m

1 stop

3:15 pm - 6:30 pm

LAX

TRS

18h 15m

1 stop

$593ITA Airways

Thu, Oct 15 - Mon, Oct 19

11:15 am - 1:15 pm

TRS

SFO

35h 00m

1 stop

8:20 am - 2:30 pm

SFO

TRS

21h 10m

2 stops

$696Multiple Airlines

Tue, Sep 8 - Tue, Sep 22

6:35 am - 9:15 am

TRS

SNA

35h 40m

3 stops

11:05 am - 10:25 am

SNA

TRS

38h 20m

2 stops

$836United Airlines

Thu, Nov 5 - Mon, Nov 9

6:35 am - 9:15 am

TRS

SNA

35h 40m

3 stops

8:00 am - 10:25 am

SNA

TRS

65h 25m

3 stops

$871United Airlines

Thu, Nov 5 - Mon, Nov 9

6:10 am - 12:36 am

TRS

LAS

27h 26m

2 stops

9:10 pm - 9:55 pm

LAS

TRS

15h 45m

1 stop

$1,120Multiple Airlines

Fri, Jun 26 - Fri, Jul 3

Lufthansa flights from Trieste to California

Our best Lufthansa deals on Trieste to California flight tickets

Lufthansa

May 31

TRS6:10 amTrieste Ronchi dei Legionari

22h 40m

1 stop

SFO7:50 pmSan Francisco

Jun 6

SFO7:15 pmSan Francisco

18h 00m

1 stop

TRS10:15 pmTrieste Ronchi dei Legionari

$568

Lufthansa

May 29

TRS6:10 amTrieste Ronchi dei Legionari

16h 00m

1 stop

LAX1:10 pmLos Angeles

Jun 2

LAX6:40 pmLos Angeles

18h 35m

1 stop

TRS10:15 pmTrieste Ronchi dei Legionari

$591

Lufthansa

May 29

TRS6:10 amTrieste Ronchi dei Legionari

16h 00m

1 stop

LAX1:10 pmLos Angeles

Jun 2

LAX6:40 pmLos Angeles

18h 35m

1 stop

TRS10:15 pmTrieste Ronchi dei Legionari

$592

ITA Airways flights from Trieste to California

Our best ITA Airways deals on Trieste to California flight tickets

ITA Airways

Sep 9

TRS6:35 amTrieste Ronchi dei Legionari

15h 40m

1 stop

SFO1:15 pmSan Francisco

Sep 23

SFO3:15 pmSan Francisco

18h 15m

1 stop

TRS6:30 pmTrieste Ronchi dei Legionari

$459

ITA Airways

Sep 8

TRS6:35 amTrieste Ronchi dei Legionari

15h 40m

1 stop

SFO1:15 pmSan Francisco

Sep 22

SFO3:15 pmSan Francisco

22h 40m

1 stop

TRS10:55 pmTrieste Ronchi dei Legionari

$557

ITA Airways

Oct 15

TRS7:15 pmTrieste Ronchi dei Legionari

27h 00m

1 stop

LAX1:15 pmLos Angeles

Oct 19

LAX3:15 pmLos Angeles

18h 15m

1 stop

TRS6:30 pmTrieste Ronchi dei Legionari

$593

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Wed 9/9

6:35 am-1:15 pm

1 stop15h 40m

San Francisco

Wed 9/23

3:15 pm-6:30 pm

1 stop18h 15m

$459

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Tue 9/8

6:35 am-1:15 pm

1 stop15h 40m

San Francisco

Tue 9/22

3:15 pm-10:55 pm

1 stop22h 40m

$557

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Sun 5/31

6:10 am-7:50 pm

1 stop22h 40m

San Francisco

Sat 6/6

7:15 pm-10:15 pm

1 stop18h 00m

$568

TriesteLos Angeles

TRS - LAX

TRSLAX

Trieste Ronchi dei Legionari

Fri 5/29

6:10 am-1:10 pm

1 stop16h 00m

Los Angeles

Tue 6/2

6:40 pm-10:15 pm

1 stop18h 35m

$591

TriesteLos Angeles

TRS - LAX

TRSLAX

Trieste Ronchi dei Legionari

Fri 5/29

6:10 am-1:10 pm

1 stop16h 00m

Los Angeles

Tue 6/2

6:40 pm-10:15 pm

1 stop18h 35m

$592

TriesteLos Angeles

TRS - LAX

TRSLAX

Trieste Ronchi dei Legionari

Thu 10/15

7:15 pm-1:15 pm

1 stop27h 00m

Los Angeles

Mon 10/19

3:15 pm-6:30 pm

1 stop18h 15m

$593

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Tue 9/8

11:15 am-1:15 pm

1 stop35h 00m

San Francisco

Tue 9/22

8:20 am-2:30 pm

2 stops21h 10m

$696

TriesteSanta Ana

TRS - SNA

TRSSNA

Trieste Ronchi dei Legionari

Thu 11/5

6:35 am-9:15 am

3 stops35h 40m

Santa Ana J. Wayne/Orange Cnty

Mon 11/9

11:05 am-10:25 am

2 stops38h 20m

$836

TriesteSanta Ana

TRS - SNA

TRSSNA

Trieste Ronchi dei Legionari

Thu 11/5

6:35 am-9:15 am

3 stops35h 40m

Santa Ana J. Wayne/Orange Cnty

Mon 11/9

8:00 am-10:25 am

3 stops65h 25m

$871

TriesteLas Vegas

TRS - LAS

TRSLAS

Trieste Ronchi dei Legionari

Fri 6/26

6:10 am-12:36 am

2 stops27h 26m

Las Vegas Harry Reid Intl

Fri 7/3

9:10 pm-9:55 pm

1 stop15h 45m

$1,120

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 Trieste to California

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

What is the cheapest month to fly to California?

The month of February is another great option to travel to California, with average flight prices from Trieste averaging around $443.

Can stopping save me money on Trieste to California flights?

You could potentially save up to 34% on your flight if you consider stops on a Trieste to California flight.

Cheap Trieste to California flight deals and tips

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

Fastest flight time	15h 25m
Direct flights	None

The fastest flight from Trieste to California takes 15h 25m

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

Search flight deals

Frequently asked questions about flying from Trieste to California

When did momondo last update prices for flights from Trieste Ronchi dei Legionari Airport to California?
Prices for flights from Trieste Ronchi dei Legionari Airport to California refresh daily.
How many operators does momondo search for flights from Trieste Ronchi dei Legionari Airport to California?
There is 1 operator available for flights from Trieste Ronchi dei Legionari Airport to California as of May 2026.
How old do you have to be to fly from Trieste Ronchi dei Legionari Airport to California?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Trieste Ronchi dei Legionari Airport to California.
What documentation or ID do you need to fly to California?
The required travel and health documents for your California trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at California. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Trieste to California

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

Airline	Rating	Free Cancellation	Price
ITA Airways	PriceFrom $530	Free Cancellation	Rating 6.7 1,218 reviews		Search ITA Airways flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Trieste to California. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Trieste to California flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to California from Trieste. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to California, momondo offers a useful price alert feature which will track prices for flights to California from Trieste and alert you when they change.