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$551+ Cheap flights from Trieste (TRS) to San Francisco (SFO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
TRS — SFO
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Trieste to San Francisco

Cheapest flights from Trieste to San Francisco
Explore the most affordable flight options available from Trieste to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Lufthansa deal was found by Cheapflights users on 12/11. 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.
Mon 12/222:40 pmTRS - SFO
1 stop14h 30mLufthansa
Wed 12/316:50 pmSFO - TRS
1 stop18h 50mLufthansa
Deal found 12/11$774
This Lufthansa deal was found by Cheapflights users on 12/11. 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 12/242:40 pmTRS - SFO
2 stops19h 37mLufthansa
Wed 12/311:35 pmSFO - TRS
1 stop24h 05mLufthansa
Deal found 12/11$780
This Lufthansa deal was found by Cheapflights users on 12/11. 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.
Mon 12/222:40 pmTRS - SFO
1 stop14h 30mLufthansa
Tue 12/3012:50 pmSFO - TRS
2 stops16h 10mLufthansa
Deal found 12/11$814
This Lufthansa deal was found by Cheapflights users on 12/11. 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.
Mon 12/222:40 pmTRS - SFO
1 stop14h 30mLufthansa
Thu 1/112:50 pmSFO - TRS
2 stops16h 15mLufthansa
Deal found 12/11$815
This Lufthansa deal was found by Cheapflights users on 12/11. 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 12/242:40 pmTRS - SFO
2 stops19h 37mLufthansa
Tue 12/3012:50 pmSFO - TRS
2 stops16h 10mLufthansa
Deal found 12/11$820
This FlightHub deal was found by Cheapflights users on 12/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:35 amTRS - SFO
1 stop15h 30mITA Airways
Thu 1/13:05 pmSFO - TRS
1 stop18h 25mITA Airways
Deal found 12/11$822
This Cheapflightsfares deal was found by Cheapflights users on 12/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:15 amTRS - SFO
2 stops19h 45mLufthansa
Wed 12/319:40 pmSFO - TRS
2 stops16h 00mLufthansa
Deal found 12/11$839
This ITA Airways deal was found by Cheapflights users on 12/11. 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 ITA Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/217:15 pmTRS - SFO
1 stop26h 50mITA Airways
Thu 1/13:05 pmSFO - TRS
1 stop22h 50mITA Airways
Deal found 12/11$844
This KAYAK deal was found by Cheapflights users on 12/11. 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.
Tue 12/232:40 pmTRS - SFO
1 stop14h 30mMultiple Airlines
Thu 1/11:35 pmSFO - TRS
1 stop15h 30mMultiple Airlines
Deal found 12/11$854

Find flight deals from Trieste to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Trieste (TRS) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 12, 2025.

Round-trip from

$550
(oojo)

Popular in

August

Cheapest in

March

Average price

$717
From Trieste Ronchi dei Legionari to San Francisco
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($190 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Trieste to San Francisco 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 December 12, 2025.
Use the filters below to find and compare flights from Trieste to San Francisco that are best for you.

Fly from

Trieste

Fly to

San Francisco

Route

Depart

Return

Price

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Tue 4/14

6:35 am-1:15 pm

1 stop15h 40m

San Francisco

Tue 4/28

3:15 pm-2:30 pm

1 stop14h 15m

$551

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Sun 6/7

6:35 am-1:15 pm

1 stop15h 40m

San Francisco

Tue 6/23

3:15 pm-6:30 pm

1 stop18h 15m

$655

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Wed 6/10

6:35 am-1:15 pm

1 stop15h 40m

San Francisco

Tue 6/23

3:15 pm-10:55 pm

1 stop22h 40m

$682

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Mon 6/8

6:35 am-1:15 pm

1 stop15h 40m

San Francisco

Mon 6/22

3:15 pm-2:30 pm

1 stop14h 15m

$684

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Sun 6/7

6:35 am-1:15 pm

1 stop15h 40m

San Francisco

Mon 6/22

3:15 pm-2:30 pm

1 stop14h 15m

$684

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Mon 6/8

7:15 pm-8:49 pm

2 stops34h 34m

San Francisco

Tue 6/23

3:15 pm-6:30 pm

1 stop18h 15m

$687

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Wed 6/10

6:35 am-1:15 pm

1 stop15h 40m

San Francisco

Mon 6/22

3:15 pm-2:30 pm

1 stop14h 15m

$696

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Tue 6/9

6:35 am-1:15 pm

1 stop15h 40m

San Francisco

Sun 6/21

3:15 pm-6:30 pm

1 stop18h 15m

$711

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Tue 6/9

7:15 pm-1:15 pm

1 stop27h 00m

San Francisco

Mon 6/22

3:15 pm-10:55 pm

1 stop22h 40m

$711

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Wed 12/31

6:35 am-9:22 pm

2 stops23h 47m

$1,883

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Best time to book a flight from Trieste to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Trieste 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 Trieste to San Francisco

What is the cheapest month to book a flight from Trieste to San Francisco?

Currently, October is the cheapest month in which you can book a flight from Trieste to San Francisco (average of $449). Flying from Trieste to San Francisco in July is currently the most expensive (average of $662). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

Find hourly flight availability from Trieste to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 42% on flights from Trieste to San Francisco by exploring options for tickets in the afternoon.

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated December 12, 2025.
See what other customers who have flown with Lufthansa from Trieste to San Francisco have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Lufthansa
6.8
Okay
7,626 reviews

Food

6.3

Comfort

6.8

Crew

7.6

Entertainment

6.4

Overall

6.8

Boarding

7.0

Reviews

1 / 20
4.0
Okay

Djermouli,Dec 2025

FRA - SFO

I’m sorry the worst airline united food sales I’m diabetic plus high cholesterol pls seats it’s not comfortable plus screen tv broke I try to charge my phone don’t work I’m not flying with united airlines
Lufthansa
6.8
Okay
7,626 reviews
Lufthansa
6.8
Okay
7,626 reviews

Food

6.3

Comfort

6.8

Crew

7.6

Entertainment

6.4

Overall

6.8

Boarding

7.0

Reviews

1 / 20
4.0
Okay

Djermouli,Dec 2025

FRA - SFO

I’m sorry the worst airline united food sales I’m diabetic plus high cholesterol pls seats it’s not comfortable plus screen tv broke I try to charge my phone don’t work I’m not flying with united airlines

Related info for your journey

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

  • How long is the flight from Trieste to San Francisco?

    Airlines like ITA Airways fly from Trieste to San Francisco in about 15h 40m. The time it takes to get you to your destination can typically vary by up to . There are 6049 mi between Trieste and San Francisco.

  • What is the cheapest airline to fly from Trieste to San Francisco round-trip?

    Our cheapest airline available from Trieste to San Francisco is Lufthansa. Our recent data shows that you can find tickets from as low as $653 on this airline. Lufthansa is priced at 15% lower than the current average price of a flight leaving 3 months from now.

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

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

  • How can I find direct flights from Trieste to San Francisco?

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

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

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

  • What is the cheapest month to book a flight from Trieste to San Francisco?

    Currently, October is the cheapest month in which you can book a flight from Trieste to San Francisco (average of $449). Flying from Trieste to San Francisco in July is currently the most expensive (average of $662). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
South San Francisco
Santa Cruz
Livermore
Turlock
Manteca
Watsonville
Sunnyvale
Santa Clara
San Bruno
Redwood City
Daly City
Vallejo
Hollister
Foster City
Union City
Davis
San Ramon
Burlingame
Milpitas

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Trieste to San Francisco

Discover the top airline that operate flights from Trieste to San Francisco. 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$653Average$781FlexibilityNo cancel feeOn-time76%

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