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$596+ 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 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
TRS — SFO
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheap 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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$651
(ITA Airways)

Popular in

August

Cheapest in

March

Average price

$624
Provider with most accurate pricing for Trieste Ronchi dei Legionari-San Francisco flight deals.
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Provider most trusted by Cheapflights users for Trieste Ronchi dei Legionari-San Francisco flights.
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From Trieste Ronchi dei Legionari to San Francisco
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Highest demand for flights based on searches. 20% potential increase in price ($186 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 29, 2025.

This Gotogate deal was found by Cheapflights users on 10/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/61:05 pmTRS - SFO
2 stops57h 00mITA Airways
Thu 11/133:05 pmSFO - TRS
1 stop18h 25mITA Airways
Deal found 10/28$596
This ITA Airways deal was found by Cheapflights users on 10/27. 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.
Sat 11/226:35 amTRS - SFO
1 stop15h 30mITA Airways
Sat 11/293:05 pmSFO - TRS
1 stop22h 50mITA Airways
Deal found 10/27$651
This Orbitz deal was found by Cheapflights users on 10/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:15 amTRS - SFO
1 stop18h 40mLufthansa
Thu 11/136:50 pmSFO - TRS
1 stop34h 15mLufthansa
Deal found 10/28$858
This Turkish Airlines deal was found by Cheapflights users on 10/27. 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.
Wed 11/1211:15 amTRS - SFO
2 stops32h 50mTurkish Airlines
Fri 12/56:50 pmSFO - TRS
2 stops38h 40mTurkish Airlines
Deal found 10/27$1,341
This Turkish Airlines deal was found by Cheapflights users on 10/27. 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.
Mon 11/107:15 pmTRS - SFO
2 stops30h 30mMultiple Airlines
Fri 12/56:50 pmSFO - TRS
2 stops34h 40mMultiple Airlines
Deal found 10/27$1,344
This Mytrip deal was found by Cheapflights users on 10/28. 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.
Thu 11/67:15 pmTRS - SFO
3 stops29h 50mMultiple Airlines
Thu 11/139:40 pmSFO - TRS
2 stops15h 50mMultiple Airlines
Deal found 10/28$1,384
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/172:40 pmTRS - SFO
1 stop14h 30mLufthansa
Fri 11/212:45 pmSFO - TRS
2 stops38h 20mLufthansa
Deal found 10/29$1,482

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 October 29, 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

Thu 3/5

6:35 am-1:05 pm

1 stop15h 30m

San Francisco

Mon 3/9

4:05 pm-10:55 pm

1 stop22h 50m

$651

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Sat 11/22

6:35 am-1:05 pm

1 stop15h 30m

San Francisco

Sat 11/29

3:05 pm-10:55 pm

1 stop22h 50m

$651

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Sat 1/24

6:25 am-3:55 pm

1 stop18h 30m

San Francisco

Sat 2/7

1:35 pm-2:05 pm

1 stop15h 30m

$662

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Sun 3/1

3:00 pm-12:40 pm

1 stop30h 40m

San Francisco

Tue 3/10

3:40 pm-2:00 pm

1 stop14h 20m

$669

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Compare providers for flights from Trieste to San Francisco

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 Trieste to San Francisco in October.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 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 Trieste-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Trieste-San Francisco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Trieste-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Trieste-San Francisco 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 Trieste-San Francisco 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 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 $665). 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 October 29, 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.

How much does it cost to fly round-trip from Trieste to San Francisco?

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 30m. 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.

  • 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 $665). 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?

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