What is the cheapest airline that flies from San Francisco to Trieste Ronchi dei Legionari?

ITA Airways and Lufthansa are the most popular carriers operating from San Francisco to Trieste Ronchi dei Legionari

What airlines fly to Trieste?

ITA Airways, United Airlines and Lufthansa are the top three most popular airlines that fly to Trieste from San Francisco according to our data. ITA Airways is the first choice among our users, with 30% of people opting to fly with this airline when traveling to Trieste. Keep in mind that there are 15 different airlines that fly to Trieste on a routine basis, so you have a few additional options to choose from.

Which airport is the most popular layover for flights between San Francisco and Trieste?

Frankfurt am Main (FRA) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from San Francisco to Trieste?

Rome (FCO) has the shortest average layover time for this route: 1h 15m.

Which layover airport has the shortest travel time from San Francisco to Trieste?

Flights connecting via Rome (FCO) have the shortest average one-way travel time: 14h 15m.

Which layover airport offers the lowest fares from San Francisco to Trieste?

Flights via Rome (FCO) offer the lowest average round-trip price of $1,292.

When did momondo last update prices for flights from San Francisco Airport to Trieste Ronchi dei Legionari Airport?

Prices for flights from San Francisco Airport to Trieste Ronchi dei Legionari Airport are refreshed on a daily basis.

How many operators does momondo search for flights from San Francisco Airport to Trieste Ronchi dei Legionari Airport?

There are 2 operators available for flights from San Francisco Airport to Trieste Ronchi dei Legionari Airport as of July 2025.

How old do you have to be to fly from San Francisco Airport to Trieste Ronchi dei Legionari Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Francisco Airport to Trieste Ronchi dei Legionari Airport.

What documentation or ID do you need to fly to Trieste Ronchi dei Legionari Airport?

The travel and health documents you'll need for your trip to Trieste Ronchi dei Legionari Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Trieste Ronchi dei Legionari Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$296 Cheap Flights from San Francisco to Trieste in 2025

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Find the cheapest flights from San Francisco to Trieste

Round-trip

One-way

Cheap round-trip flights

9:40 pm - 1:45 pmSFO-TRS

31h 05m2 stops

2:45 pm - 12:40 pmTRS-SFO

30h 55m1 stop

$780Lufthansa

Find Deal

Fri, Nov 21 - Mon, Dec 1

9:40 pm - 1:45 pmSFO-TRS

31h 05m2 stops

2:45 pm - 7:35 pmTRS-SFO

37h 50m2 stops

$814Lufthansa

Find Deal

Fri, Nov 21 - Mon, Dec 1

3:15 pm - 10:55 pmSFO-TRS

22h 40m1 stop

11:15 am - 1:25 pmTRS-SFO

35h 10m1 stop

$988ITA Airways

Find Deal

Mon, Aug 11 - Fri, Aug 15

3:15 pm - 6:30 pmSFO-TRS

18h 15m1 stop

7:55 am - 1:25 pmTRS-SFO

38h 30m2 stops

$1,015ITA Airways

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Mon, Aug 11 - Fri, Aug 15

6:45 pm - 10:55 pmSFO-TRS

43h 10m2 stops

6:35 am - 4:40 pmTRS-SFO

43h 05m2 stops

$1,186Turkish Airlines

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Sun, Aug 10 - Tue, Aug 19

4:30 pm - 10:55 pmSFO-TRS

21h 25m2 stops

7:15 pm - 2:30 pmTRS-SFO

28h 15m2 stops

$1,195

Find Deal

Mon, Aug 11 - Fri, Aug 15

1:00 pm - 1:45 pmSFO-TRS

39h 45m3 stops

7:15 pm - 4:45 pmTRS-SFO

30h 30m2 stops

$1,231

Find Deal

Fri, Nov 21 - Mon, Dec 1

4:20 pm - 10:55 pmSFO-TRS

21h 35m2 stops

11:15 am - 4:45 pmTRS-SFO

38h 30m3 stops

$1,810TAP AIR PORTUGAL

Find Deal

Mon, Aug 11 - Mon, Aug 18

6:45 pm - 6:30 pmSFO-TRS

38h 45m2 stops

11:15 am - 4:40 pmTRS-SFO

38h 25m2 stops

$1,842Turkish Airlines

Find Deal

Mon, Aug 11 - Mon, Aug 18

4:20 pm - 10:55 pmSFO-TRS

21h 35m2 stops

11:15 am - 4:45 pmTRS-SFO

38h 30m3 stops

$1,906TAP AIR PORTUGAL

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Mon, Aug 11 - Mon, Aug 18

Lufthansa flights from San Francisco to Trieste

Our best Lufthansa deals on San Francisco to Trieste flight tickets

Lufthansa

Nov 21

SFO9:40 pmSan Francisco

31h 05m

2 stops

TRS1:45 pmTrieste Ronchi dei Legionari

Dec 1

TRS2:45 pmTrieste Ronchi dei Legionari

30h 55m

1 stop

SFO12:40 pmSan Francisco

$780

Find similar

Lufthansa

Nov 21

SFO9:40 pmSan Francisco

31h 05m

2 stops

TRS1:45 pmTrieste Ronchi dei Legionari

Dec 1

TRS2:45 pmTrieste Ronchi dei Legionari

37h 50m

2 stops

SFO7:35 pmSan Francisco

$814

Find similar

Lufthansa

Nov 21

SFO2:40 pmSan Francisco

14h 15m

1 stop

TRS1:55 pmTrieste Ronchi dei Legionari

Dec 1

TRS2:45 pmTrieste Ronchi dei Legionari

30h 55m

1 stop

SFO12:40 pmSan Francisco

$834

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Emirates flights from San Francisco to Trieste

Our best Emirates deals on San Francisco to Trieste flight tickets

Emirates

Sep 12

SFO5:05 pmSan Francisco

44h 50m

2 stops

TRS10:55 pmTrieste Ronchi dei Legionari

Sep 19

TRS7:15 pmTrieste Ronchi dei Legionari

51h 45m

2 stops

SFO2:00 pmSan Francisco

$1,916

Find similar

Emirates

Aug 11

SFO5:05 pmSan Francisco

40h 25m

2 stops

TRS6:30 pmTrieste Ronchi dei Legionari

Aug 14

TRS7:15 pmTrieste Ronchi dei Legionari

27h 45m

2 stops

SFO2:00 pmSan Francisco

$2,331

Find similar

Emirates

Aug 12

SFO5:05 pmSan Francisco

44h 50m

2 stops

TRS10:55 pmTrieste Ronchi dei Legionari

Aug 15

TRS7:15 pmTrieste Ronchi dei Legionari

27h 45m

2 stops

SFO2:00 pmSan Francisco

$2,629

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Fri 11/21

9:40 pm-1:45 pm

2 stops31h 05m

Trieste Ronchi dei Legionari

Mon 12/1

2:45 pm-12:40 pm

1 stop30h 55m

$780

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Fri 11/21

9:40 pm-1:45 pm

2 stops31h 05m

Trieste Ronchi dei Legionari

Mon 12/1

2:45 pm-7:35 pm

2 stops37h 50m

$814

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Mon 8/11

3:15 pm-10:55 pm

1 stop22h 40m

Trieste Ronchi dei Legionari

Fri 8/15

11:15 am-1:25 pm

1 stop35h 10m

$988

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Mon 8/11

3:15 pm-6:30 pm

1 stop18h 15m

Trieste Ronchi dei Legionari

Fri 8/15

7:55 am-1:25 pm

2 stops38h 30m

$1,015

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Sun 8/10

6:45 pm-10:55 pm

2 stops43h 10m

Trieste Ronchi dei Legionari

Tue 8/19

6:35 am-4:40 pm

2 stops43h 05m

$1,186

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Mon 8/11

4:30 pm-10:55 pm

2 stops21h 25m

Trieste Ronchi dei Legionari

Fri 8/15

7:15 pm-2:30 pm

2 stops28h 15m

$1,195

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Fri 11/21

1:00 pm-1:45 pm

3 stops39h 45m

Trieste Ronchi dei Legionari

Mon 12/1

7:15 pm-4:45 pm

2 stops30h 30m

$1,231

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Mon 8/11

4:20 pm-10:55 pm

2 stops21h 35m

Trieste Ronchi dei Legionari

Mon 8/18

11:15 am-4:45 pm

3 stops38h 30m

$1,810

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Mon 8/11

6:45 pm-6:30 pm

2 stops38h 45m

Trieste Ronchi dei Legionari

Mon 8/18

11:15 am-4:40 pm

2 stops38h 25m

$1,842

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Mon 8/11

4:20 pm-10:55 pm

2 stops21h 35m

Trieste Ronchi dei Legionari

Mon 8/18

11:15 am-4:45 pm

3 stops38h 30m

$1,906

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How to get the cheapest flight ticket from San Francisco to Trieste

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the cheapest day to depart on your flight to Trieste?

The cheapest day to depart on your flight to Trieste is on a Sunday when prices can be found for as low as $1,102. This is often the case because there is less demand to fly during this day of the week. Flights from San Francisco to Trieste on a Saturday will generally be more expensive and average around $1,672. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Trieste?

Our most recent data shows that the best time of day to fly to Trieste is in the afternoon. Flights from San Francisco to Trieste during this time can be as low as $1,213. Flights to Trieste are more costly at noon, with an average ticket price of $1,373. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from San Francisco to Trieste

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to Trieste according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap San Francisco to Trieste (SFO to TRS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Francisco to Trieste

Best Price Found	$296
Fastest flight time	14h 15m
Direct flights	None
Airports in Trieste	1 airport

The best one-way flight to Trieste from San Francisco in the past 72 hours is $296. The best round-trip flight deal from San Francisco to Trieste found on momondo in the last 72 hours is $780.

The fastest flight from San Francisco to Trieste takes 14h 15m

There are no direct flights from San Francisco to Trieste. Popular non-direct route for this connection is San Francisco Airport - Trieste Ronchi dei Legionari Airport.

There is 1 airport near Trieste: Trieste Ronchi dei Legionari (TRS)

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How far is San Francisco to Trieste Ronchi dei Legionari by plane?
There are 6057.3 mi between San Francisco and Trieste Ronchi dei Legionari. A reasonable flight in good conditions will take 14h 15m.
When did momondo last update prices for flights from San Francisco Airport to Trieste Ronchi dei Legionari Airport?
Prices for flights from San Francisco Airport to Trieste Ronchi dei Legionari Airport are refreshed on a daily basis.
How many operators does momondo search for flights from San Francisco Airport to Trieste Ronchi dei Legionari Airport?
There are 2 operators available for flights from San Francisco Airport to Trieste Ronchi dei Legionari Airport as of July 2025.
How old do you have to be to fly from San Francisco Airport to Trieste Ronchi dei Legionari Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Francisco Airport to Trieste Ronchi dei Legionari Airport.
What documentation or ID do you need to fly to Trieste Ronchi dei Legionari Airport?
The travel and health documents you'll need for your trip to Trieste Ronchi dei Legionari Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Trieste Ronchi dei Legionari Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from San Francisco to Trieste?
Based on momondo bookings for this flight route, the most popular airline on flight routes from San Francisco to Trieste is ITA Airways (57% of total bookings). The next most popular airline is Lufthansa (43%).

Best airlines flying from San Francisco to Trieste

Compare and see reviews for airlines that fly from San Francisco to Trieste with momondo

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom $693	Free Cancellation	Rating 6.8 7,275 reviews		Search Lufthansa flights
ITA Airways	PriceFrom $762	Free Cancellation	Rating 6.7 1,011 reviews		Search ITA Airways flights

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Why should I use momondo to find a flight deal from San Francisco to Trieste?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San Francisco to Trieste for you.

Can I find flights from San Francisco to Trieste with flexible booking policies on momondo?

Yes. All flights to Trieste from San Francisco on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from San Francisco to Trieste?

Once all potential San Francisco to Trieste flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from San Francisco to Trieste right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Trieste, momondo offers a useful price alert feature which will track prices for flights to Trieste from San Francisco and alert you when they change.

An easier way to manage your Trieste trip

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Cheap flights from San Francisco to Trieste from $296

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Trieste departing on 8/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Lufthansa flights from San Francisco to Trieste

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How to get the cheapest flight ticket from San Francisco to Trieste

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Trieste?

What is the cheapest time of day to depart on your flight to Trieste?

What is the cheapest airline that flies from San Francisco to Trieste Ronchi dei Legionari?

ITA Airways and Lufthansa are the most popular carriers operating from San Francisco to Trieste Ronchi dei Legionari

What airlines fly to Trieste?

Which airport is the most popular layover for flights between San Francisco and Trieste?

Frankfurt am Main (FRA) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from San Francisco to Trieste?

Flights via Rome (FCO) offer the lowest average round-trip price of $1,292.

Which layover airport has the shortest travel time from San Francisco to Trieste?

Flights connecting via Rome (FCO) have the shortest average one-way travel time: 14h 15m.

Which layover airport has the shortest connection time from San Francisco to Trieste?

Rome (FCO) has the shortest average layover time for this route: 1h 15m.

When to book flights from San Francisco to Trieste

Cheap San Francisco to Trieste (SFO to TRS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Francisco to Trieste

Best Price Found

Fastest flight time

Direct flights

Airports in Trieste

How far is San Francisco to Trieste Ronchi dei Legionari by plane?

When did momondo last update prices for flights from San Francisco Airport to Trieste Ronchi dei Legionari Airport?

How many operators does momondo search for flights from San Francisco Airport to Trieste Ronchi dei Legionari Airport?

How old do you have to be to fly from San Francisco Airport to Trieste Ronchi dei Legionari Airport?

What documentation or ID do you need to fly to Trieste Ronchi dei Legionari Airport?

What is the most popular airline from San Francisco to Trieste?

Best airlines flying from San Francisco to Trieste

Compare and see reviews for airlines that fly from San Francisco to Trieste with momondo

Traveling to a place near Trieste?

Why use momondo?

Why should I use momondo to find a flight deal from San Francisco to Trieste?

Can I find flights from San Francisco to Trieste with flexible booking policies on momondo?

How can momondo help me find flights from San Francisco to Trieste?

I’m not ready to book a flight from San Francisco to Trieste right now. Can momondo alert me if prices change?

An easier way to manage your Trieste trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Italy

Fly your favorite airline to Trieste

Airlines are sorted and displayed according to clicks in the past 7 days on momondo