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Cheap flights from Trieste to California from $370

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Trieste to California departing on 10/23. 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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Cheap round-trip flights

ITA Airways Logo
6:35 am - 1:15 pmTRS-LAX
15h 40m1 stop
ITA Airways Logo
3:15 pm - 10:55 pmLAX-TRS
22h 40m1 stop
$565ITA Airways
Find Deal
Thu, Oct 16 - Thu, Oct 23
ITA Airways Logo
6:35 am - 1:15 pmTRS-LAX
15h 40m1 stop
ITA Airways Logo
3:15 pm - 8:55 pmLAX-TRS
20h 40m2 stops
$581ITA Airways
Find Deal
Thu, Oct 16 - Thu, Oct 23
Lufthansa Logo
3:00 pm - 4:55 pmTRS-SFO
33h 55m1 stop
Lufthansa Logo
2:40 pm - 2:05 pmSFO-TRS
14h 25m1 stop
$598Lufthansa
Find Deal
Fri, Oct 31 - Fri, Nov 7
ITA Airways Logo
1:00 pm - 1:15 pmTRS-LAX
33h 15m2 stops
ITA Airways Logo
3:15 pm - 8:55 pmLAX-TRS
20h 40m2 stops
$614ITA Airways
Find Deal
Thu, Oct 16 - Thu, Oct 23
Lufthansa Logo
2:50 pm - 8:00 pmTRS-SFO
14h 10m1 stop
Lufthansa Logo
8:45 am - 2:00 pmSFO-TRS
21h 15m2 stops
$638Lufthansa
Find Deal
Thu, Mar 5 - Mon, Mar 9
Multiple Airlines Logo
6:35 am - 9:22 pmTRS-SFO
22h 47m3 stops
Multiple Airlines Logo
8:25 am - 10:45 pmSFO-TRS
29h 20m2 stops
$798Multiple Airlines
Find Deal
Fri, Oct 31 - Fri, Nov 7
Multiple Airlines Logo
6:35 am - 9:22 pmTRS-SFO
22h 47m3 stops
Multiple Airlines Logo
8:25 am - 6:30 pmSFO-TRS
25h 05m3 stops
$843Multiple Airlines
Find Deal
Fri, Oct 31 - Fri, Nov 7
KLM Logo
6:35 am - 6:50 pmTRS-SNA
45h 15m2 stops
KLM Logo
9:20 pm - 6:30 pmSNA-TRS
36h 10m2 stops
$845KLM
Find Deal
Thu, Feb 19 - Mon, Feb 23
TAP AIR PORTUGAL Logo
3:15 pm - 2:35 pmTRS-SFO
56h 20m2 stops
TAP AIR PORTUGAL Logo
4:35 pm - 10:55 pmSFO-TRS
21h 20m2 stops
$1,016TAP AIR PORTUGAL
Find Deal
Sat, Nov 22 - Sat, Nov 29
TAP AIR PORTUGAL Logo
3:15 pm - 2:35 pmTRS-SFO
56h 20m2 stops
TAP AIR PORTUGAL Logo
4:35 pm - 6:30 pmSFO-TRS
40h 55m2 stops
$1,017TAP AIR PORTUGAL
Find Deal
Sat, Nov 22 - Sat, Nov 29

ITA Airways flights from Trieste to California

Our best ITA Airways deals on Trieste to California flight tickets
ITA Airways
Sep 25
TRS6:35 amTrieste Ronchi dei Legionari
15h 50m
1 stop
SFO1:25 pmSan Francisco
Sep 30
SFO3:15 pmSan Francisco
18h 15m
1 stop
TRS6:30 pmTrieste Ronchi dei Legionari
$553
Find similar
ITA Airways
Oct 16
TRS6:35 amTrieste Ronchi dei Legionari
15h 40m
1 stop
LAX1:15 pmLos Angeles
Oct 23
LAX3:15 pmLos Angeles
22h 40m
1 stop
TRS10:55 pmTrieste Ronchi dei Legionari
$565
Find similar
ITA Airways
Sep 25
TRS6:35 amTrieste Ronchi dei Legionari
15h 50m
1 stop
SFO1:25 pmSan Francisco
Sep 30
SFO3:15 pmSan Francisco
18h 15m
1 stop
TRS6:30 pmTrieste Ronchi dei Legionari
$573
Find similar

Lufthansa flights from Trieste to California

Our best Lufthansa deals on Trieste to California flight tickets
Lufthansa
Oct 31
TRS3:00 pmTrieste Ronchi dei Legionari
33h 55m
1 stop
SFO4:55 pmSan Francisco
Nov 7
SFO2:40 pmSan Francisco
14h 25m
1 stop
TRS2:05 pmTrieste Ronchi dei Legionari
$598
Find similar
Lufthansa
Mar 5
TRS2:50 pmTrieste Ronchi dei Legionari
14h 10m
1 stop
SFO8:00 pmSan Francisco
Mar 9
SFO8:45 amSan Francisco
21h 15m
2 stops
TRS2:00 pmTrieste Ronchi dei Legionari
$638
Find similar
Lufthansa
Mar 5
TRS6:25 amTrieste Ronchi dei Legionari
22h 35m
1 stop
SFO8:00 pmSan Francisco
Mar 9
SFO8:30 amSan Francisco
21h 30m
2 stops
TRS2:00 pmTrieste Ronchi dei Legionari
$642
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Trieste to California 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 September 17, 2025.
Use the filters below to find and compare flights from Trieste to California that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TriesteLos Angeles

TRS - LAX

TRSLAX

Trieste Ronchi dei Legionari

Thu 10/16

6:35 am-1:15 pm

1 stop15h 40m

Los Angeles

Thu 10/23

3:15 pm-10:55 pm

1 stop22h 40m

$565

TriesteLos Angeles

TRS - LAX

TRSLAX

Trieste Ronchi dei Legionari

Thu 10/16

6:35 am-1:15 pm

1 stop15h 40m

Los Angeles

Thu 10/23

3:15 pm-8:55 pm

2 stops20h 40m

$581

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Fri 10/31

3:00 pm-4:55 pm

1 stop33h 55m

San Francisco

Fri 11/7

2:40 pm-2:05 pm

1 stop14h 25m

$598

TriesteLos Angeles

TRS - LAX

TRSLAX

Trieste Ronchi dei Legionari

Thu 10/16

1:00 pm-1:15 pm

2 stops33h 15m

Los Angeles

Thu 10/23

3:15 pm-8:55 pm

2 stops20h 40m

$614

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Thu 3/5

2:50 pm-8:00 pm

1 stop14h 10m

San Francisco

Mon 3/9

8:45 am-2:00 pm

2 stops21h 15m

$638

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Fri 10/31

6:35 am-9:22 pm

3 stops22h 47m

San Francisco

Fri 11/7

8:25 am-10:45 pm

2 stops29h 20m

$798

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Fri 10/31

6:35 am-9:22 pm

3 stops22h 47m

San Francisco

Fri 11/7

8:25 am-6:30 pm

3 stops25h 05m

$843

TriesteSanta Ana

TRS - SNA

TRSSNA

Trieste Ronchi dei Legionari

Thu 2/19

6:35 am-6:50 pm

2 stops45h 15m

Santa Ana J. Wayne/Orange Cnty

Mon 2/23

9:20 pm-6:30 pm

2 stops36h 10m

$845

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Sat 11/22

3:15 pm-2:35 pm

2 stops56h 20m

San Francisco

Sat 11/29

4:35 pm-10:55 pm

2 stops21h 20m

$1,016

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Sat 11/22

3:15 pm-2:35 pm

2 stops56h 20m

San Francisco

Sat 11/29

4:35 pm-6:30 pm

2 stops40h 55m

$1,017

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 California from

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

What is the cheapest month to fly to California?

The month of April is another great option to travel to California, with average flight prices from Trieste averaging around $537.

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

The cheapest day to depart from Trieste to California is on a Thursday. Travelers who choose to depart for California on a Thursday will often find tickets for as low as $541. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to California on Monday is $734.

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

The cheapest time of day to fly to California is in the evening when flights can be purchased for as low as $581. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $674 on average. Flights to California from Trieste in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

Can stopping save me money on Trieste to California flights?

You could potentially save up to 10% 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

Direct flights

None
There are no direct flights from Trieste to California. There are no popular flight routes from Trieste to California.
Search flight deals

  • 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 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.

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.

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Fri 10/17
Fri 10/24
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