HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Trieste

$470+ Cheap flights from California to Trieste (TRS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — TRS
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from California to Trieste with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from California to Trieste

Keep the following information in mind while searching for California to Trieste flight deals. Data was last updated May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$562
(Orbitz)

One-way from

$470
(Mytrip)
Provider with most accurate pricing for Los Angeles-Trieste Ronchi dei Legionari flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Trieste Ronchi dei Legionari flights.
Search Deals
From California to Trieste Ronchi dei Legionari
Search Deals
One-way flight from California to Trieste Ronchi dei Legionari
Search Deals

Find flight deals from California to Trieste

Cheapest flights from California to Trieste
Explore the most affordable flight options available from California to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This KAYAK deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/152:55 pmLAX - TRS
1 stop22h 30mLufthansa
Tue 5/206:30 amTRS - LAX
1 stop15h 30mLufthansa
Deal found 4/30$738
This Mytrip deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/136:00 amSJC - TRS
3 stops31h 55mMultiple Airlines
Fri 5/166:35 amTRS - SJC
3 stops36h 30mMultiple Airlines
Deal found 4/30$865
This Gurufare deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/711:15 amSFO - TRS
2 stops18h 15mITA Airways
Sat 5/176:35 amTRS - SFO
1 stop15h 40mITA Airways
Deal found 4/30$871
This Condor deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/294:30 pmSFO - TRS
1 stop21h 05mMultiple Airlines
Sat 8/166:30 amTRS - SFO
2 stops26h 27mMultiple Airlines
Deal found 4/30$900
This Lufthansa deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1310:38 amSMF - TRS
2 stops18h 27mLufthansa
Fri 10/106:30 amTRS - SMF
2 stops20h 33mLufthansa
Deal found 4/29$987
This Lufthansa deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/292:40 pmSFO - TRS
1 stop14h 25mLufthansa
Sat 8/166:30 amTRS - SFO
1 stop15h 10mLufthansa
Deal found 4/30$997
This United deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/141:15 pmONT - TRS
2 stops15h 50mMultiple Airlines
Tue 10/286:20 amTRS - ONT
2 stops19h 40mMultiple Airlines
Deal found 4/30$998
This Turkish Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1212:40 pmSFO - TRS
2 stops40h 50mTurkish Airlines
Tue 9/2311:15 amTRS - SFO
2 stops32h 20mTurkish Airlines
Deal found 4/29$1,046
This Delta deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1311:00 pmSJC - TRS
2 stops50h 25mDelta
Tue 9/236:35 amTRS - SJC
2 stops25h 23mDelta
Deal found 4/29$1,079
This Delta deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/911:30 amSFO - TRS
2 stops37h 55mDelta
Mon 9/2211:15 amTRS - SFO
2 stops42h 47mDelta
Deal found 4/29$1,079
This Lufthansa deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/108:45 amSJC - TRS
2 stops20h 20mLufthansa
Tue 9/236:30 amTRS - SJC
2 stops23h 48mLufthansa
Deal found 4/29$1,097
This Condor deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/1411:57 amLAS - TRS
2 stops25h 28mMultiple Airlines
Sat 6/216:30 amTRS - LAS
2 stops25h 19mMultiple Airlines
Deal found 4/30$1,120

Cheapflights Fare Finder

Customize your flight search to find flights from California to Trieste 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, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2025.
Use the filters below to find and compare flights from California to Trieste that are best for you.

Fly from

California

Fly to

Trieste

Route

Depart

Return

Price

Los AngelesTrieste

LAX - TRS

LAXTRS

Los Angeles

Thu 5/15

2:55 pm-10:25 pm

1 stop22h 30m

Trieste Ronchi dei Legionari

Tue 5/20

6:30 am-1:00 pm

1 stop15h 30m

$738

San JoseTrieste

SJC - TRS

SJCTRS

San Jose

Tue 5/13

6:00 am-10:55 pm

3 stops31h 55m

Trieste Ronchi dei Legionari

Fri 5/16

6:35 am-10:05 am

3 stops36h 30m

$865

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Tue 7/29

4:30 pm-10:35 pm

1 stop21h 05m

Trieste Ronchi dei Legionari

Sat 8/16

6:30 am-11:57 pm

2 stops26h 27m

$900

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Thu 8/28

3:15 pm-10:55 pm

1 stop22h 40m

Trieste Ronchi dei Legionari

Mon 9/22

7:25 pm-1:15 pm

1 stop26h 50m

$976

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Tue 7/29

2:40 pm-2:05 pm

1 stop14h 25m

Trieste Ronchi dei Legionari

Sat 8/16

6:30 am-12:40 pm

1 stop15h 10m

$997

OntarioTrieste

ONT - TRS

ONTTRS

Ontario

Tue 10/14

1:15 pm-2:05 pm

2 stops15h 50m

Trieste Ronchi dei Legionari

Tue 10/28

6:20 am-6:00 pm

2 stops19h 40m

$998

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Fri 9/12

12:40 pm-2:30 pm

2 stops40h 50m

Trieste Ronchi dei Legionari

Tue 9/23

11:15 am-10:35 am

2 stops32h 20m

$1,046

San JoseTrieste

SJC - TRS

SJCTRS

San Jose

Sat 9/13

11:00 pm-10:25 am

2 stops50h 25m

Trieste Ronchi dei Legionari

Thu 9/25

6:35 am-10:58 pm

2 stops25h 23m

$1,079

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Tue 9/9

11:30 am-10:25 am

2 stops37h 55m

Trieste Ronchi dei Legionari

Mon 9/22

11:15 am-9:02 pm

2 stops42h 47m

$1,079

San JoseTrieste

SJC - TRS

SJCTRS

San Jose

Wed 9/10

8:45 am-2:05 pm

2 stops20h 20m

Trieste Ronchi dei Legionari

Tue 9/23

6:30 am-9:18 pm

2 stops23h 48m

$1,097

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 28 results
1
2
3

Best time to book a flight from California to Trieste

Have a flexible travel schedule? Discover the best time to fly to Trieste from California with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest time of day to fly from CA to TRS?

Find hourly flight availability from California to Trieste. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

When flying from California to Trieste, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Trieste by month

Plan your trip to Trieste by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Trieste ranges from 2.4 - 4.5 inches per month. November is typically the wettest month, when rainfall can reach 4.5 in. February is typically the driest time to visit Trieste when rainfall is around 2.4 in.

Temperature in Trieste by month

Plan your trip to Trieste by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Trieste, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Trieste

Get insights into the airlines that provide service to Trieste. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Trieste. Reviews last updated May 1, 2025.
See what other customers who have flown with Emirates, Delta and Austrian Airlines from California to Trieste have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.0
Very good
3,216 reviews

Boarding

8.1

Crew

8.3

Overall

8.0

Food

7.8

Entertainment

8.2

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Emirates
8.0
Very good
3,216 reviews
Emirates
8.0
Very good
3,216 reviews

Boarding

8.1

Crew

8.3

Overall

8.0

Food

7.8

Entertainment

8.2

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Delta
8.0
Very good
7,934 reviews
Emirates
8.0
Very good
3,216 reviews

Boarding

8.1

Crew

8.3

Overall

8.0

Food

7.8

Entertainment

8.2

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Austrian Airlines
7.6
Good
781 reviews
Emirates
8.0
Very good
3,216 reviews

Boarding

8.1

Crew

8.3

Overall

8.0

Food

7.8

Entertainment

8.2

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Turkish Airlines
7.3
Good
3,790 reviews
Emirates
8.0
Very good
3,216 reviews

Boarding

8.1

Crew

8.3

Overall

8.0

Food

7.8

Entertainment

8.2

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
ITA Airways
6.7
Okay
967 reviews
Emirates
8.0
Very good
3,216 reviews

Boarding

8.1

Crew

8.3

Overall

8.0

Food

7.8

Entertainment

8.2

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Related info for your journey

Find useful and relevant information for your journey from California to Trieste. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Trieste from California?

    Located just 18.2 mi from the city center, Trieste Ronchi dei Legionari (TRS) is the airport most travelers will use when flying to Trieste from California.

  • What are the cheapest airlines to fly from California to Trieste one-way?

    The cheapest airlines for a one-way flight from California to Trieste are Lufthansa ($594), ITA Airways ($684), and Delta ($834).

  • What are the most popular routes from California to Trieste?

    When deciding which route to take from California to Trieste consider San Francisco - Trieste Ronchi dei Legionari, Los Angeles - Trieste Ronchi dei Legionari or San Diego - Trieste Ronchi dei Legionari as they are the most popular.

  • Can I find deals for flights from California to Trieste that include hotel bookings?

    Yes. In addition to deals on California to Trieste flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from California to Trieste?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from California to Trieste.

  • Can I find deals for business class flights from California to Trieste?

    Yes. Cheapflights offers flight deals from California to Trieste by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near California?

Book flights to California if you plan to visit one of these locations
Udine

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for California to Trieste

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Vicenza flights
Newark to Vicenza flights
LaGuardia to Vicenza flights
Atlanta to Vicenza flights
Dulles Intl to Vicenza flights
Boston to Vicenza flights
Los Angeles to Vicenza flights
Dallas/Fort Worth to Vicenza flights
Seattle to Vicenza flights
Philadelphia to Vicenza flights
Reagan-National to Vicenza flights
O'Hare Intl to Vicenza flights
Baltimore to Vicenza flights
San Francisco to Vicenza flights
Raleigh to Vicenza flights
Hobby to Vicenza flights
Miami to Vicenza flights
Portland to Vicenza flights
Orlando to Vicenza flights
Love Field to Vicenza flights
Denver to Vicenza flights
Minneapolis to Vicenza flights
George Bush Intcntl to Vicenza flights
Charlotte to Vicenza flights
Midway to Vicenza flights
Austin to Vicenza flights
Ontario to Vicenza flights
Tampa to Vicenza flights
Kansas City to Vicenza flights
Detroit to Vicenza flights
Sky Harbor Intl to Vicenza flights
Las Vegas to Vicenza flights
San Diego to Vicenza flights
Syracuse to Vicenza flights
Cincinnati to Vicenza flights
San Antonio to Vicenza flights
New Orleans to Vicenza flights
Indianapolis to Vicenza flights
Norfolk to Vicenza flights
Salt Lake City to Vicenza flights
Cleveland to Vicenza flights
Dayton to Vicenza flights
Reno to Vicenza flights
Columbus to Vicenza flights
Richmond to Vicenza flights
Pittsburgh to Vicenza flights
Nashville to Vicenza flights
Des Moines to Vicenza flights
Memphis to Vicenza flights
Lexington to Vicenza flights

Top 2 airlines flying from California to Trieste

Discover the top 2 airlines that operate flights from California to Trieste. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
ITA AirwaysCheapest$599Average$1,141FlexibilityNo cancel feeOn-time81%
LufthansaCheapest$693Average$1,258FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.