How long is the flight from San Francisco to Trieste?

A quick flight from San Francisco to Trieste can take about 14h 25m. Lufthansa provides one of the quickest options available for as low as $694. 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.

What is the cheapest day to fly from San Francisco to Trieste?

Travelers seeking maximum savings on their San Francisco to Trieste flight should consider departing on Sunday at noon when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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.

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).

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

Friday flights are found to be more expensive to fly from San Francisco to Trieste. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Trieste.

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.

$517+ Cheap Flights from San Francisco to Trieste

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Cheap flight deals from San Francisco to Trieste

Round-trip from	$694 (Lufthansa)
One-way from	$517 (ITA Airways)

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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Find 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 September 11, 2025.

Sat 11/222:45 pmSFO - TRS

2 stops46h 40mLufthansa

Sun 11/303:15 pmTRS - SFO

2 stops54h 25mLufthansa

Deal found 9/10

$934

Sat 10/252:45 pmSFO - TRS

2 stops39h 15mMultiple Airlines

Sat 11/13:15 pmTRS - SFO

2 stops34h 15mMultiple Airlines

Deal found 9/9

$1,013

Sat 10/258:25 amSFO - TRS

2 stops22h 05mLufthansa

Sat 11/16:25 amTRS - SFO

1 stop18h 30mLufthansa

Deal found 9/9

$1,018

Fri 11/212:40 pmSFO - TRS

1 stop14h 25mLufthansa

Sat 11/296:25 amTRS - SFO

1 stop15h 15mLufthansa

Deal found 9/10

$1,161

Fri 11/2111:05 pmSFO - TRS

2 stops34h 25mITA Airways

Sat 11/296:35 amTRS - SFO

2 stops20h 03mITA Airways

Deal found 9/10

$1,361

Tue 9/238:30 amSFO - TRS

2 stops16h 55mUnited Airlines

Fri 9/266:35 amTRS - SFO

2 stops22h 16mUnited Airlines

Deal found 9/9

$2,040

Best flights from San Francisco to Trieste
Discover carefully curated flight deals from San Francisco to Trieste that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Wed 3/42:40 pmSFO - TRS

1 stop14h 25mLufthansa

Sun 3/83:00 pmTRS - SFO

1 stop30h 40mLufthansa

Deal found 9/10

$694

Tue 9/235:05 pmSFO - TRS

2 stops44h 50mEmirates

Fri 9/267:15 pmTRS - SFO

2 stops51h 45mEmirates

Deal found 9/11

$2,275

Wed 9/2411:59 pmSFO - TRS

2 stops25h 26mUnited Airlines

Sat 9/276:35 amTRS - SFO

2 stops20h 53mUnited Airlines

Deal found 9/11

$2,501

Sat 11/293:05 pmSFO - TRS

1 stop14h 25mITA Airways

Thu 12/186:35 amTRS - SFO

1 stop15h 30mITA Airways

Deal found 9/10

$4,176

Wed 12/107:25 pmSFO - TRS

2 stops18h 30mSWISS

Sun 12/216:35 amTRS - SFO

2 stops42h 55mSWISS

Deal found 9/10

$4,425

Thu 12/113:05 pmSFO - TRS

1 stop18h 25mITA Airways

Thu 12/186:35 amTRS - SFO

1 stop15h 30mITA Airways

Deal found 9/10

$4,176

Thu 12/43:05 pmSFO - TRS

1 stop22h 50mITA Airways

Sun 12/217:15 pmTRS - SFO

1 stop26h 50mITA Airways

Deal found 9/10

$4,426

Last-minute flights from San Francisco to Trieste
Discover last-minute flight deals from San Francisco to Trieste. Data last updated September 11, 2025 and is based on user searches.

Tue 9/238:30 amSFO - TRS

2 stops16h 55mUnited Airlines

Fri 9/266:35 amTRS - SFO

2 stops22h 16mUnited Airlines

Deal found 9/9

$2,040

Tue 9/235:05 pmSFO - TRS

2 stops44h 50mEmirates

Fri 9/267:15 pmTRS - SFO

2 stops51h 45mEmirates

Deal found 9/11

$2,275

Wed 9/2411:59 pmSFO - TRS

2 stops25h 26mUnited Airlines

Sat 9/276:35 amTRS - SFO

2 stops20h 53mUnited Airlines

Deal found 9/11

$2,501

Tue 10/146:30 amSFO - TRS

2 stops27h 00mITA Airways

Wed 10/293:15 pmTRS - SFO

1 stop30h 50mITA Airways

Deal found 9/10

$4,738

Tue 10/142:40 pmSFO - TRS

1 stop14h 25mLufthansa

Wed 10/292:40 pmTRS - SFO

1 stop31h 00mLufthansa

Deal found 9/11

$5,507

Sat 10/252:45 pmSFO - TRS

2 stops39h 15mMultiple Airlines

Sat 11/13:15 pmTRS - SFO

2 stops34h 15mMultiple Airlines

Deal found 9/9

$1,013

Sat 10/258:25 amSFO - TRS

2 stops22h 05mLufthansa

Sat 11/16:25 amTRS - SFO

1 stop18h 30mLufthansa

Deal found 9/9

$1,018

One-way flights from San Francisco to Trieste
Search for one-way flight options from San Francisco to Trieste. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

Sat 11/153:05 pmSFO - TRS

1 stop22h 50mITA Airways

Deal found 9/10

$517

Sat 11/154:35 pmSFO - TRS

2 stops36h 55mTAP AIR PORTUGAL

Deal found 9/10

$591

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Francisco to Trieste that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Wed 3/4

2:40 pm-2:05 pm

1 stop14h 25m

Trieste Ronchi dei Legionari

Sun 3/8

3:00 pm-1:40 pm

1 stop30h 40m

$694

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Tue 9/23

5:05 pm-10:55 pm

2 stops44h 50m

Trieste Ronchi dei Legionari

Fri 9/26

7:15 pm-2:00 pm

2 stops51h 45m

$2,275

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Wed 9/24

11:59 pm-10:25 am

2 stops25h 26m

Trieste Ronchi dei Legionari

Sat 9/27

6:35 am-6:28 pm

2 stops20h 53m

$2,501

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Sat 11/29

3:05 pm-2:30 pm

1 stop14h 25m

Trieste Ronchi dei Legionari

Thu 12/18

6:35 am-1:05 pm

1 stop15h 30m

$4,176

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Thu 12/11

3:05 pm-6:30 pm

1 stop18h 25m

Trieste Ronchi dei Legionari

Thu 12/18

6:35 am-1:05 pm

1 stop15h 30m

$4,176

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Wed 12/10

7:25 pm-10:55 pm

2 stops18h 30m

Trieste Ronchi dei Legionari

Sun 12/21

6:35 am-4:30 pm

2 stops42h 55m

$4,425

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Thu 12/4

3:05 pm-10:55 pm

1 stop22h 50m

Trieste Ronchi dei Legionari

Sun 12/21

7:15 pm-1:05 pm

1 stop26h 50m

$4,426

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Sat 11/15

3:05 pm-10:55 pm

1 stop22h 50m

$517

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Sat 11/15

4:35 pm-2:30 pm

2 stops36h 55m

$591

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

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 time of day to fly from SFO to TRS?

Unlike in the morning, when flights are generally more expensive, you can save up to 12% on flights from San Francisco to Trieste by exploring options for tickets at noon.

Reviews of airlines servicing Trieste

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

7,409 reviews

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

7,409 reviews

Lufthansa

6.8

Okay

7,409 reviews

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

1,036 reviews

Lufthansa

6.8

Okay

7,409 reviews

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

How long is the flight from San Francisco to Trieste?
A quick flight from San Francisco to Trieste can take about 14h 25m. Lufthansa provides one of the quickest options available for as low as $694. 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for San Francisco to Trieste

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Top 2 airlines flying from San Francisco to Trieste

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest$693	Average$1,460	FlexibilityNo cancel fee	On-time76%
ITA Airways	Cheapest$762	Average$1,115	FlexibilityNo cancel fee	On-time81%

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$517+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Francisco to Trieste with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from San Francisco to Trieste

Round-trip from

One-way from

Find flight deals from San Francisco to Trieste

Cheapest flights from San Francisco to TriesteExplore 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 September 11, 2025.

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 September 11, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Francisco to Trieste that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to Trieste

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

Reviews of airlines servicing Trieste

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.

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?

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

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

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

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

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 San Francisco to Trieste

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from San Francisco to Trieste

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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 September 11, 2025.