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Trieste

$615+ Cheap flights from San Francisco (SFO) 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 12/25. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — TRS
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from San Francisco to Trieste

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

This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:00 amSFO - TRS
2 stops18h 25mUnited Airlines
Sat 12/276:35 amTRS - SFO
2 stops24h 04mUnited Airlines
Deal found 12/11$2,648

Find flight deals from San Francisco to Trieste

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Trieste (TRS). 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.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$821
(ITA Airways)

One-way from

$615
(ITA Airways)
Provider with most accurate pricing for San Francisco-Trieste Ronchi dei Legionari flight deals.
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Provider most trusted by Cheapflights users for San Francisco-Trieste Ronchi dei Legionari flights.
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From San Francisco to Trieste Ronchi dei Legionari
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One-way flight from San Francisco to Trieste Ronchi dei Legionari
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Cheapflights Fare Finder

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

Fly from

San Francisco

Fly to

Trieste

Route

Depart

Return

Price

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Sun 4/12

3:15 pm-2:30 pm

1 stop14h 15m

Trieste Ronchi dei Legionari

Wed 4/22

7:15 pm-1:15 pm

1 stop27h 00m

$821

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Tue 4/7

3:15 pm-6:30 pm

1 stop18h 15m

Trieste Ronchi dei Legionari

Tue 4/21

6:35 am-1:15 pm

1 stop15h 40m

$821

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Tue 4/7

3:15 pm-6:30 pm

1 stop18h 15m

Trieste Ronchi dei Legionari

Wed 4/22

7:15 pm-1:15 pm

1 stop27h 00m

$821

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Thu 4/9

3:15 pm-2:30 pm

1 stop14h 15m

Trieste Ronchi dei Legionari

Fri 4/17

6:35 am-1:15 pm

1 stop15h 40m

$871

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Wed 2/4

9:10 am-10:55 pm

2 stops28h 45m

Trieste Ronchi dei Legionari

Sun 2/8

6:35 am-6:52 pm

2 stops21h 17m

$901

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Fri 4/10

3:15 pm-2:30 pm

1 stop14h 15m

Trieste Ronchi dei Legionari

Mon 4/20

7:15 pm-1:15 pm

1 stop27h 00m

$908

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Mon 4/6

12:00 pm-6:30 pm

2 stops21h 30m

Trieste Ronchi dei Legionari

Sun 4/19

6:35 am-1:15 pm

1 stop15h 40m

$912

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Thu 4/9

8:45 am-2:30 pm

2 stops20h 45m

Trieste Ronchi dei Legionari

Sun 4/19

6:35 am-1:15 pm

1 stop15h 40m

$962

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Wed 6/3

3:15 pm-10:55 pm

1 stop22h 40m

Trieste Ronchi dei Legionari

Fri 7/3

6:35 am-7:05 pm

2 stops21h 30m

$1,094

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Wed 6/3

3:15 pm-6:30 pm

1 stop18h 15m

Trieste Ronchi dei Legionari

Thu 7/2

6:35 am-7:05 pm

2 stops21h 30m

$1,094

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 11 results
1
2

Compare providers for flights from San Francisco to Trieste

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Trieste in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Francisco-Trieste flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Francisco-Trieste flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Francisco-Trieste flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Trieste flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Trieste flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Francisco to Trieste

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

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

Currently, October is the cheapest month in which you can book a flight from San Francisco to Trieste (average of $441). Flying from San Francisco to Trieste in July is currently the most expensive (average of $777). 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 SFO to TRS?

Find hourly flight availability from San Francisco 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 December 12, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 14% on flights from San Francisco to Trieste by exploring options for tickets in the morning.

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 December 12, 2025.
See what other customers who have flown with Lufthansa and ITA Airways from San Francisco 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.
Lufthansa
6.8
Okay
7,626 reviews

Comfort

6.8

Boarding

7.0

Food

6.3

Crew

7.6

Entertainment

6.4

Overall

6.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

SFO - FRA

Convenient flight to my destination. Good entertainment options on board. I was seated close to some people who had noisy children which made sleeping a bit challenging.
Lufthansa
6.8
Okay
7,626 reviews
Lufthansa
6.8
Okay
7,626 reviews

Comfort

6.8

Boarding

7.0

Food

6.3

Crew

7.6

Entertainment

6.4

Overall

6.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

SFO - FRA

Convenient flight to my destination. Good entertainment options on board. I was seated close to some people who had noisy children which made sleeping a bit challenging.
ITA Airways
6.7
Okay
1,100 reviews
Lufthansa
6.8
Okay
7,626 reviews

Comfort

6.8

Boarding

7.0

Food

6.3

Crew

7.6

Entertainment

6.4

Overall

6.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

SFO - FRA

Convenient flight to my destination. Good entertainment options on board. I was seated close to some people who had noisy children which made sleeping a bit challenging.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Trieste. 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 San Francisco to Trieste?

    A quick flight from San Francisco to Trieste can take about 14h 15m. ITA Airways provides one of the quickest options available for as low as $821. Airlines will cover a distance of 6049 mi.

  • What are the cheapest airlines flying from San Francisco to Trieste round-trip?

    Our cheapest airline available from San Francisco to Trieste is Lufthansa. Our recent data shows that you can find tickets from as low as $693 on this airline. An additional option worth looking into is ITA Airways, starting at $762.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco 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.

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

    Currently, October is the cheapest month in which you can book a flight from San Francisco to Trieste (average of $441). Flying from San Francisco to Trieste in July is currently the most expensive (average of $777). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from San Francisco to Trieste

Discover the top 2 airlines that operate flights from San Francisco 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$693Average$1,459FlexibilityNo cancel feeOn-time76%
ITA AirwaysCheapest$762Average$1,153FlexibilityNo cancel feeOn-time81%

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