$388 Find Cheap Flights from Trieste to California - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Trieste to California departing on 9/30. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Trieste to California

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Los Angeles
Los Angeles1 stop$570
San Francisco
San Francisco1 stop$537
San Diego
San Diego2 stops$1,141
Los Angeles
Los Angeles1 stop$570
San Francisco
San Francisco1 stop$537
San Diego
San Diego2 stops$1,141

Book Cheap Trieste to California Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Trieste to California that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Trieste to California

Thu, Sep 10 - Tue, Sep 22
ITA Airways Logo
7:15 pm - 1:15 pm
TRS
-
SFO
27h 00m
1 stop
ITA Airways Logo
3:15 pm - 2:30 pm
SFO
-
TRS
14h 15m
1 stop
$537ITA Airways
Wed, Sep 9 - Wed, Sep 16
ITA Airways Logo
7:15 pm - 1:15 pm
TRS
-
SFO
27h 00m
1 stop
ITA Airways Logo
3:15 pm - 2:30 pm
SFO
-
TRS
14h 15m
1 stop
$540ITA Airways
Sun, Sep 6 - Wed, Sep 23
ITA Airways Logo
6:35 am - 1:15 pm
TRS
-
SFO
15h 40m
1 stop
ITA Airways Logo
3:15 pm - 2:30 pm
SFO
-
TRS
14h 15m
1 stop
$542ITA Airways
Wed, Sep 9 - Wed, Sep 16
ITA Airways Logo
11:15 am - 1:15 pm
TRS
-
SFO
35h 00m
1 stop
ITA Airways Logo
3:15 pm - 2:30 pm
SFO
-
TRS
14h 15m
1 stop
$551ITA Airways
Sun, Oct 18 - Thu, Oct 29
Multiple Airlines Logo
11:15 am - 1:15 pm
TRS
-
SFO
35h 00m
1 stop
Multiple Airlines Logo
8:47 am - 2:30 pm
SFO
-
TRS
21h 43m
2 stops
$554Multiple Airlines
Sun, Sep 6 - Wed, Sep 23
Lufthansa Logo
6:10 am - 7:45 pm
TRS
-
SFO
22h 35m
1 stop
Lufthansa Logo
3:10 pm - 10:25 pm
SFO
-
TRS
22h 15m
2 stops
$575Lufthansa
Thu, Sep 3 - Mon, Sep 7
Lufthansa Logo
6:15 am - 7:45 pm
TRS
-
SFO
22h 30m
1 stop
Lufthansa Logo
7:20 pm - 10:25 pm
SFO
-
TRS
18h 05m
1 stop
$576Lufthansa
Tue, Sep 15 - Tue, Sep 29
Lufthansa Logo
6:20 am - 1:10 pm
TRS
-
LAX
15h 50m
1 stop
Lufthansa Logo
3:05 pm - 10:15 pm
LAX
-
TRS
22h 10m
1 stop
$607Lufthansa
Tue, Sep 15 - Tue, Sep 29
KLM Logo
6:35 am - 6:49 pm
TRS
-
LAX
21h 14m
2 stops
KLM Logo
9:55 am - 2:30 pm
LAX
-
TRS
19h 35m
2 stops
$614KLM
Thu, Oct 15 - Tue, Oct 20
Multiple Airlines Logo
6:35 am - 1:15 pm
TRS
-
LAX
15h 40m
1 stop
Multiple Airlines Logo
2:19 pm - 10:15 pm
LAX
-
TRS
22h 56m
2 stops
$620Multiple Airlines
Booking Insights

KAYAK's insights & trends for Trieste to California flights

Get data-powered insights and trends into flights from Trieste to California to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Trieste to California?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Trieste to California departing in October.

Flight prices are below average for this route right now.

Flights to California from Trieste usually cost between $688 and $713 in October.
The lowest price found in the past 5 days was $570 on ITA Airways (Oct 15-Oct 20).

What is the cheapest month to fly from Trieste to California?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Trieste to California, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Trieste to California is February, when tickets cost $586 (return) on average. On the other hand, the most expensive months are January and June, when the average cost of round-trip tickets is $1,367 and $1,046 respectively.

Good to know

Low season

January

Cheapest flight

$388
Best time to beat the crowds but there is an average 79% increase in price.
Most popular time to fly with an average 21% increase in price.
Flight from Trieste to Los Angeles

FAQs - booking California flights

  • How does KAYAK find such low prices on flights from Trieste to California?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Trieste to California.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Trieste to California?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Trieste to California is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Trieste to California?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Trieste to California with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Trieste to California?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Trieste to California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Trieste to California

 
See real verified KAYAK customer reviews for airlines flying from Trieste to California. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Trieste to California? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.8
LufthansaOverall score based on 8163 reviews
7.0Boarding
6.3Food
7.6Crew
6.4Entertainment
6.8Comfort
Airline reviews

Good and they are leaving at time and arriving on time

8.0 ExcellentMaher, Jul 2026
MUC - SAN
Read more Lufthansa reviews

Good and they are leaving at time and arriving on time

The flight attendants were wonderful - one man put my carry on in the bin for me. Very attentive service. Loved the blanket and pillow waiting for me in economy. Food was excellent which is a surprise given the reputation of any airline food. Wine was fine with the meals. Delighted with the new movies - flight went by very quickly. I would definitely fly Lufthansa again.

Generally good. Not their fault but the design of the Boeing 747 had seating supports directly in line with my legs. So my legs always had to straddle this support which caused body misallignment. Such poor design from Boeing. There was no USB port for me to charge my phone. The screen touch control was very poor.

Patrick and the whole crew were amazing! Hope to have this team for all my European trips.

Smooth flight with enough time for connection. Ran out of meal options. In-flight and gate staff were friendly and helpful. Good service overall.

They don’t give information on why a flight is delayed in a timely manner. Very frustrating.

The plane (Mitsubishi CRJ) felt old, creaking and not very new. The crew was okay. Hot water provision was broken so hot beverages could't be served.

Best flight attendants ever! Very customer and service oriented, courteous, professional and helpful.

Never happened. Flight was delayed. Had to be re rojyed

The plane was very clean. The bathroom was clean as well. The land crew were very polite and informative and helpful. They informed me that there is a long way and challenging to go from international terminal to national terminal and in addition to getting my suitcases and going through customs and dropping them again for my second leg of trip which was San Francisco to Los Angeles . I have left knee issue and had a recent fall with aching muscles all over, the land crew suggested wheelchair help for me, God bless her. If I did not have help, I could not make it to my last terminal. Thank you UNITED AIRLINE!

Worst airline. Nine hours late. Checkin agent was not helpful at all.

Horrible. I was on flight AZ620 from Rome to LA. I paid over $4k for my business class seat and had a horrible experience. The WiFi was not connected for the entire flight and instead of being transparent with the passengers, the staff passed out WiFi vouchers and failed to let us know that the Wifi did not and would not work for the entire flight. Much worse is the terrible treatment from the manager of the flight attendant staff. I got up from my business class seat to use the restroom meant for this section. The flight attendant manager (I didn't catch her name but later learned she was the manager from another employee) started yelling at me that I couldn't use the restroom. I thought maybe it was busy. Then another flight attendant came to my seat and said that her manager thinks I'm not in business class, but I should let her know I am so I can use the restroom. I stood up again and before I reached the restroom, the manager was already yelling at me again to use the restroom in the back! She was judging me based solely on my appearance and assumed I wasn't business class. I had to interrupt her constant yelling to tell her "I am business class." She was racist and rude. I travel constantly for work, but moving forward I am never going to spend my money on an ITA airway flight again. Thanks to this manager, you lost a customer.

I am vegan, and the food was not what I expected it to be One meal was good, but the rest of the things were not very satisfying… I was disappointed in the food The flight itself was very smooth and everybody was very very nice… The boarding was very good

Crazy and confusing check in process for connecting international flights. Extremely uncomfortable seats in economy, bad in flight service with useless attendants, 10 year old movie selection, inedible food + only 1 full meal for 12+ hours long flight - 2nd snack was a cold bun with 1 slice of tomato and 1 slice of cucumber; 3rd was 2 breads - 1 hot and 1 cold. Finally absolute bad information on arrival time - in flight suggested we will reach at 12 AM until last minute, when we landed it was 1:15 PM

The price for Premium Economy seats very competitive and ITA beat the big guys in terms of fair. However, seat comfort was below expectations. Movie selection was poor. Food - absolutely horrible!! I felt like a prisoner for 13 hours being fed cold damp rolls and room temp water. NOT what I expected for Premium Economy!!

Most importantly, got us there and back safely and on time. Seats in Prem Econ spacious enough and comfortable. But pulldown footrest on both flights inadequate/broken. Crew...mixed: a few were quite pleasant, others seemed disinterested. Food was underwhelming. Yes, I know it's just "airplane food", so dont expect much... but even United is doing better now, and BA more so. Would I fly ITA again...perhaps. Price diff was main selector this time, almost 1K LESS/person than UA. I'm naturally frugal -- For 2K I'll put up with some small inconveniences.

Flight attendant really had bad behavior.. yelled at people when she is trying to defend, to have favor w her people..!

Appreciated being met with a glass of sparkling wine - also the warm cleansing towel offered before the meal. The food was tasty!

Top notch re cleanliness, comfort, operational. Attendants attentive, cheerful, courteous and professional. An unusually high-grade experience all around.

They are nice personal and as sky silver medaglia member love Delta air and partner

Everything you need to know for your flight from Trieste to California

Information on your arrival and departure airports