$478 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 9/20. 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

KAYAK searches hundreds of travel sites at once for deals on flights to California

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Trieste to California, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Trieste to California, as well as popular online travel agencies
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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$543
San Francisco
San Francisco1 stop$643
San Diego
San Diego2 stops$1,200
Los Angeles
Los Angeles1 stop$543
San Francisco
San Francisco1 stop$643
San Diego
San Diego2 stops$1,200

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

Tue, Sep 29 - Tue, Oct 13
ITA Airways Logo
11:15 am - 1:15 pm
TRS
-
LAX
35h 00m
1 stop
ITA Airways Logo
3:15 pm - 6:30 pm
LAX
-
TRS
18h 15m
1 stop
$543ITA Airways
Fri, Oct 23 - Fri, Nov 13
ITA Airways Logo
3:15 pm - 1:15 pm
TRS
-
LAX
31h 00m
1 stop
ITA Airways Logo
3:20 pm - 2:30 pm
LAX
-
TRS
14h 10m
1 stop
$566ITA Airways
Fri, Nov 6 - Tue, Nov 10
ITA Airways Logo
7:15 pm - 1:30 pm
TRS
-
LAX
27h 15m
1 stop
ITA Airways Logo
3:20 pm - 2:30 pm
LAX
-
TRS
14h 10m
1 stop
$586ITA Airways
Fri, Oct 23 - Fri, Nov 13
KLM Logo
6:35 am - 9:22 pm
TRS
-
LAX
23h 47m
2 stops
KLM Logo
10:45 am - 2:30 pm
LAX
-
TRS
18h 45m
2 stops
$627KLM
Wed, Sep 16 - Wed, Sep 30
Lufthansa Logo
6:10 am - 1:10 pm
TRS
-
LAX
16h 00m
1 stop
Lufthansa Logo
3:20 pm - 10:25 pm
LAX
-
TRS
22h 05m
2 stops
$653Lufthansa
Wed, Sep 16 - Wed, Sep 30
Lufthansa Logo
6:10 am - 8:18 pm
TRS
-
LAX
23h 08m
2 stops
Lufthansa Logo
3:20 pm - 10:25 pm
LAX
-
TRS
22h 05m
2 stops
$660Lufthansa
Wed, Oct 14 - Sun, Oct 18
United Airlines Logo
6:35 am - 10:42 pm
TRS
-
SJC
25h 07m
2 stops
United Airlines Logo
8:45 am - 10:25 am
SJC
-
TRS
40h 40m
2 stops
$854United Airlines
Wed, Oct 14 - Sun, Oct 18
United Airlines Logo
6:35 am - 10:42 pm
TRS
-
SJC
25h 07m
2 stops
United Airlines Logo
8:45 am - 10:25 am
SJC
-
TRS
40h 40m
2 stops
$856United Airlines
Thu, Jul 30 - Thu, Aug 6
Multiple Airlines Logo
6:15 am - 3:15 pm
TRS
-
LAS
18h 00m
1 stop
Multiple Airlines Logo
5:15 pm - 10:15 pm
LAS
-
TRS
20h 00m
1 stop
$1,173Multiple Airlines
Thu, Jul 30 - Thu, Aug 6
Multiple Airlines Logo
6:15 am - 11:42 pm
TRS
-
LAS
26h 27m
2 stops
Multiple Airlines Logo
5:15 pm - 10:15 pm
LAS
-
TRS
20h 00m
1 stop
$1,230Multiple 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.

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 April, when tickets cost $442 (return) on average. On the other hand, the most expensive months are July and December, when the average cost of round-trip tickets is $695 and $687 respectively.

Good to know

Low seasonJanuary
Cheapest flight$478
Best time to beat the crowds but there is an average 78% 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 8066 reviews
7.6Crew
7.0Boarding
6.8Comfort
6.4Entertainment
6.3Food
Airline reviews

The food on this flight was better than what we had getting to Rome. The flight was comfortable and the staff was great. One of the staff members was a stickler about the blankets in the aisle, which I get, but still. Overall, great flight and will fly with them again!

10.0 ExcellentCara, Jun 2026
FRA - TPA
Read more Lufthansa reviews

The food on this flight was better than what we had getting to Rome. The flight was comfortable and the staff was great. One of the staff members was a stickler about the blankets in the aisle, which I get, but still. Overall, great flight and will fly with them again!

Our screen kept turning off ...3 times...had to get crew attention to turn it on again

The legroom was lacking and the entertainment system lacked adequate selection of older films. Modern films are generally not very good.

Perfect airline, super friendly, great service, tasty food. Would fly again.

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.

Flight was delayed by several hours and then cancelled due to weather. But Staff was very helpful getting me on a different flight. United should offer food coupons and tooth brush and paste for stranded passengers

Service was excellent. Flight was only about half full, which meant we had tons of room to stretch out. Boarding area was nice and well organized, flight attendants were super friendly and attentive and we loved the 3 snacks!

My flight was cancelled, but it was not Kayak's fault. Kayak did require me to pay for the ticket twice to two different venders who paid Lufthansa. Kayak/Lufthansa owes me for the first booking I made first was fraudulent on the part of the subcontracting ticket seller. There will be litigation over this issue under the current passenger protection laws.

flight was half full, plenty of empty seats, was able to lie down across 4 seats, food was good, arrived on time

Was never allowed on and not refunded the full amount of the ticket plus charged a $300 processing fee.

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 crew was business like and not very friendly. It was very disappointing in that they handed out the meal at the beginning of our journey. Eight hours later, they handed a sandwich and a drink. During their eight hour break all they did was sit in the back, looked at their phone and read. They never came down the aisle during those eight hours and offered another beverage or to See if there was anything they could do for the passengers.

Stews were nice. Plane was very old. Some of the mechanics for travelers outdated. Not enough bathrooms. Hideous food.

It was ok. Overall comfortable but Seat back could not be adjusted and food options were limited.

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!!

Our flight was changed to a day we could not travel so we cancelled it. Will never use kayak again

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.

ITA changed our 9 hr direct flight without giving any reason to 4 stop overs 24 hrs flight without delays.

Poor food choices for AVML. Totally out of the world food. Bad food menu.

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

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

Information on your arrival and departure airports