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Cheap flights from Trieste to San Francisco from $424

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Trieste to San Francisco departing on 9/8. 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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Find the cheapest flights from Trieste to San Francisco

Cheap round-trip flights

Logo
2:45 pm - 7:55 pmTRS-SFO
14h 10m1 stop
Logo
2:40 pm - 2:05 pmSFO-TRS
14h 25m1 stop
$593
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Thu, Sep 4 - Mon, Sep 8
Lufthansa Logo
6:25 am - 8:10 pmTRS-SFO
22h 45m1 stop
Lufthansa Logo
2:40 pm - 2:05 pmSFO-TRS
14h 25m1 stop
$629Lufthansa
Find Deal
Fri, Nov 21 - Fri, Nov 28
Lufthansa Logo
6:05 am - 8:10 pmTRS-SFO
23h 05m1 stop
Lufthansa Logo
2:40 pm - 2:05 pmSFO-TRS
14h 25m1 stop
$635Lufthansa
Find Deal
Thu, Nov 20 - Sat, Nov 29
Lufthansa Logo
2:50 pm - 8:10 pmTRS-SFO
14h 20m1 stop
Lufthansa Logo
9:40 pm - 10:30 pmSFO-TRS
15h 50m2 stops
$666Lufthansa
Find Deal
Thu, Nov 20 - Thu, Nov 27
ITA Airways Logo
6:35 am - 1:05 pmTRS-SFO
15h 30m1 stop
ITA Airways Logo
3:05 pm - 2:30 pmSFO-TRS
14h 25m1 stop
$672ITA Airways
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Thu, Nov 20 - Thu, Nov 27
Lufthansa Logo
6:05 am - 3:55 pmTRS-SFO
18h 50m1 stop
Lufthansa Logo
12:50 pm - 2:05 pmSFO-TRS
16h 15m2 stops
$678Lufthansa
Find Deal
Thu, Nov 20 - Fri, Nov 28
ITA Airways Logo
6:35 am - 1:05 pmTRS-SFO
15h 30m1 stop
ITA Airways Logo
3:05 pm - 6:30 pmSFO-TRS
18h 25m1 stop
$701ITA Airways
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Thu, Nov 20 - Sat, Nov 29
TAP AIR PORTUGAL Logo
11:15 am - 4:05 pmTRS-SFO
37h 50m2 stops
TAP AIR PORTUGAL Logo
7:10 pm - 10:55 pmSFO-TRS
42h 45m2 stops
$853TAP AIR PORTUGAL
Find Deal
Thu, Nov 20 - Fri, Nov 28
TAP AIR PORTUGAL Logo
11:15 am - 2:35 pmTRS-SFO
60h 20m2 stops
TAP AIR PORTUGAL Logo
7:10 pm - 2:30 pmSFO-TRS
34h 20m2 stops
$860TAP AIR PORTUGAL
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Sat, Nov 22 - Fri, Nov 28
Emirates Logo
11:15 am - 2:00 pmTRS-SFO
35h 45m2 stops
Emirates Logo
5:05 pm - 6:35 pmSFO-TRS
40h 30m2 stops
$4,484Emirates
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Thu, Oct 2 - Thu, Oct 9

Lufthansa flights from Trieste to San Francisco

Our best Lufthansa deals on Trieste to San Francisco flight tickets
Lufthansa
Nov 21
TRS6:25 amTrieste Ronchi dei Legionari
22h 45m
1 stop
SFO8:10 pmSan Francisco
Nov 28
SFO2:40 pmSan Francisco
14h 25m
1 stop
TRS2:05 pmTrieste Ronchi dei Legionari
$629
Find similar
Lufthansa
Nov 20
TRS6:05 amTrieste Ronchi dei Legionari
23h 05m
1 stop
SFO8:10 pmSan Francisco
Nov 29
SFO2:40 pmSan Francisco
14h 25m
1 stop
TRS2:05 pmTrieste Ronchi dei Legionari
$635
Find similar
Lufthansa
Nov 20
TRS2:50 pmTrieste Ronchi dei Legionari
14h 20m
1 stop
SFO8:10 pmSan Francisco
Nov 27
SFO9:40 pmSan Francisco
15h 50m
2 stops
TRS10:30 pmTrieste Ronchi dei Legionari
$666
Find similar

ITA Airways flights from Trieste to San Francisco

Our best ITA Airways deals on Trieste to San Francisco flight tickets
ITA Airways
Nov 20
TRS6:35 amTrieste Ronchi dei Legionari
15h 30m
1 stop
SFO1:05 pmSan Francisco
Nov 27
SFO3:05 pmSan Francisco
14h 25m
1 stop
TRS2:30 pmTrieste Ronchi dei Legionari
$672
Find similar
ITA Airways
Nov 20
TRS6:35 amTrieste Ronchi dei Legionari
15h 30m
1 stop
SFO1:05 pmSan Francisco
Nov 29
SFO3:05 pmSan Francisco
18h 25m
1 stop
TRS6:30 pmTrieste Ronchi dei Legionari
$701
Find similar
ITA Airways
Sep 4
TRS1:00 pmTrieste Ronchi dei Legionari
33h 25m
2 stops
SFO1:25 pmSan Francisco
Sep 8
SFO3:15 pmSan Francisco
22h 40m
1 stop
TRS10:55 pmTrieste Ronchi dei Legionari
$747
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from Trieste to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Thu 9/4

2:45 pm-7:55 pm

1 stop14h 10m

San Francisco

Mon 9/8

2:40 pm-2:05 pm

1 stop14h 25m

$593

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Fri 11/21

6:25 am-8:10 pm

1 stop22h 45m

San Francisco

Fri 11/28

2:40 pm-2:05 pm

1 stop14h 25m

$629

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Thu 11/20

6:05 am-8:10 pm

1 stop23h 05m

San Francisco

Sat 11/29

2:40 pm-2:05 pm

1 stop14h 25m

$635

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Thu 11/20

2:50 pm-8:10 pm

1 stop14h 20m

San Francisco

Thu 11/27

9:40 pm-10:30 pm

2 stops15h 50m

$666

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Thu 11/20

6:35 am-1:05 pm

1 stop15h 30m

San Francisco

Thu 11/27

3:05 pm-2:30 pm

1 stop14h 25m

$672

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Thu 11/20

6:05 am-3:55 pm

1 stop18h 50m

San Francisco

Fri 11/28

12:50 pm-2:05 pm

2 stops16h 15m

$678

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Thu 11/20

6:35 am-1:05 pm

1 stop15h 30m

San Francisco

Sat 11/29

3:05 pm-6:30 pm

1 stop18h 25m

$701

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Thu 11/20

11:15 am-4:05 pm

2 stops37h 50m

San Francisco

Fri 11/28

7:10 pm-10:55 pm

2 stops42h 45m

$853

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Sat 11/22

11:15 am-2:35 pm

2 stops60h 20m

San Francisco

Fri 11/28

7:10 pm-2:30 pm

2 stops34h 20m

$860

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Thu 10/2

11:15 am-2:00 pm

2 stops35h 45m

San Francisco

Thu 10/9

5:05 pm-6:35 pm

2 stops40h 30m

$4,484

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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See travel insights to San Francisco from

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

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 typical price of a round-trip flight between Trieste and San Francisco?

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from Trieste to San Francisco is on a Wednesday when prices can be found for as low as $596. The most expensive day to fly to San Francisco is Friday, with ticket prices averaging around $818.

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

Our data shows that the cheapest Trieste to San Francisco flights are usually those with departure times in the morning. Our users have found flights to San Francisco in the morning for as low as $658. Flights in the evening are often more expensive with an average ticket price of $817.

Can stopping save me money on Trieste to San Francisco flights?

You could potentially save up to 23% on your flight if you consider stops on a Trieste to San Francisco flight.

When to book flights from Trieste to San Francisco

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

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

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

Direct flights

None
There are no direct flights from Trieste to San Francisco. There are no popular flight routes from Trieste to San Francisco.
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  • How far is Trieste Ronchi dei Legionari to San Francisco by plane?

    A flight from Trieste Ronchi dei Legionari to San Francisco will travel around 6057.3 mi. A reasonable flight in good conditions will take 14h 10m.

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

    Prices for flights from Trieste Ronchi dei Legionari Airport to San Francisco Airport were last updated today.

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

  • What documentation or ID do you need to fly to San Francisco Airport?

    The required travel and health documents for your San Francisco Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Francisco Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Carmel-by-the-Sea
Modesto
Calistoga
Sonoma
Hayward
Bodega Bay
Roseville
Santa Clara
Big Sur
Daly City
Fremont
Berkeley
Walnut Creek
Half Moon Bay
Vallejo
South San Francisco
Redwood City
Pacific Grove
Sunnyvale

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Trieste to San Francisco. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Trieste to San Francisco on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Trieste and San Francisco by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Trieste to San Francisco now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Francisco and let you know when they change.

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