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Cheap flights from Trieste to San Francisco from $478

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 10/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Trieste to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
ITA Airways Logo
7:15 pm - 1:15 pm
TRS
-
SFO
27h 00m
1 stop
ITA Airways Logo
3:15 pm - 2:30 pm
SFO
-
TRS
14h 15m
1 stop
$540ITA Airways
Wed, Sep 9 - Wed, Sep 16
ITA Airways Logo
6:35 am - 1:15 pm
TRS
-
SFO
15h 40m
1 stop
ITA Airways Logo
3:15 pm - 2:30 pm
SFO
-
TRS
14h 15m
1 stop
$542ITA Airways
Sun, Sep 6 - Wed, Sep 23
ITA Airways Logo
3:15 pm - 1:15 pm
TRS
-
SFO
31h 00m
1 stop
ITA Airways Logo
3:15 pm - 2:30 pm
SFO
-
TRS
14h 15m
1 stop
$543ITA Airways
Mon, Sep 7 - Sun, Sep 20
ITA Airways Logo
11:15 am - 1:15 pm
TRS
-
SFO
35h 00m
1 stop
ITA Airways Logo
3:15 pm - 2:30 pm
SFO
-
TRS
14h 15m
1 stop
$551ITA Airways
Wed, Sep 9 - Wed, Sep 16
ITA Airways Logo
3:15 pm - 1:15 pm
TRS
-
SFO
31h 00m
1 stop
ITA Airways Logo
4:05 pm - 6:30 pm
SFO
-
TRS
18h 25m
1 stop
$551ITA Airways
Sun, Oct 18 - Thu, Oct 29
ITA Airways Logo
7:15 pm - 1:15 pm
TRS
-
SFO
27h 00m
1 stop
ITA Airways Logo
4:05 pm - 6:30 pm
SFO
-
TRS
18h 25m
1 stop
$551ITA Airways
Sun, Oct 18 - Thu, Oct 29
ITA Airways Logo
7:15 pm - 1:15 pm
TRS
-
SFO
27h 00m
1 stop
ITA Airways Logo
3:15 pm - 2:30 pm
SFO
-
TRS
14h 15m
1 stop
$552ITA Airways
Mon, Sep 21 - Mon, Sep 28
Multiple Airlines Logo
3:15 pm - 1:15 pm
TRS
-
SFO
31h 00m
1 stop
Multiple Airlines Logo
8:47 am - 2:30 pm
SFO
-
TRS
21h 43m
2 stops
$554Multiple Airlines
Sun, Oct 18 - Thu, Oct 29
Lufthansa Logo
6:10 am - 7:45 pm
TRS
-
SFO
22h 35m
1 stop
Lufthansa Logo
3:10 pm - 10:25 pm
SFO
-
TRS
22h 15m
2 stops
$575Lufthansa
Sun, Sep 6 - Wed, Sep 23
Lufthansa Logo
6:15 am - 7:45 pm
TRS
-
SFO
22h 30m
1 stop
Lufthansa Logo
7:20 pm - 10:25 pm
SFO
-
TRS
18h 05m
1 stop
$576Lufthansa
Thu, Sep 3 - Mon, Sep 7

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Lufthansa flights from Trieste to San Francisco

Our best Lufthansa deals on Trieste to San Francisco flight tickets
Lufthansa
Sep 6
TRS6:10 amTrieste Ronchi dei Legionari
22h 35m
1 stop
SFO7:45 pmSan Francisco
Sep 23
SFO3:10 pmSan Francisco
22h 15m
2 stops
TRS10:25 pmTrieste Ronchi dei Legionari
$575
Lufthansa
Sep 3
TRS6:15 amTrieste Ronchi dei Legionari
22h 30m
1 stop
SFO7:45 pmSan Francisco
Sep 7
SFO7:20 pmSan Francisco
18h 05m
1 stop
TRS10:25 pmTrieste Ronchi dei Legionari
$576
Lufthansa
Oct 1
TRS6:15 amTrieste Ronchi dei Legionari
18h 05m
1 stop
SFO3:20 pmSan Francisco
Oct 12
SFO7:25 pmSan Francisco
18h 00m
1 stop
TRS10:25 pmTrieste Ronchi dei Legionari
$580

ITA Airways flights from Trieste to San Francisco

Our best ITA Airways deals on Trieste to San Francisco flight tickets
ITA Airways
Sep 9
TRS7:15 pmTrieste Ronchi dei Legionari
27h 00m
1 stop
SFO1:15 pmSan Francisco
Sep 16
SFO3:15 pmSan Francisco
14h 15m
1 stop
TRS2:30 pmTrieste Ronchi dei Legionari
$540
ITA Airways
Sep 6
TRS6:35 amTrieste Ronchi dei Legionari
15h 40m
1 stop
SFO1:15 pmSan Francisco
Sep 23
SFO3:15 pmSan Francisco
14h 15m
1 stop
TRS2:30 pmTrieste Ronchi dei Legionari
$542
ITA Airways
Sep 7
TRS3:15 pmTrieste Ronchi dei Legionari
31h 00m
1 stop
SFO1:15 pmSan Francisco
Sep 20
SFO3:15 pmSan Francisco
14h 15m
1 stop
TRS2:30 pmTrieste Ronchi dei Legionari
$543

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 July 29, 2026.
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

Cheapest round-trip

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Wed 9/9

7:15 pm-1:15 pm

1 stop27h 00m

San Francisco

Wed 9/16

3:15 pm-2:30 pm

1 stop14h 15m

$540
Quickest round-trip

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Sun 9/6

6:35 am-1:15 pm

1 stop15h 40m

San Francisco

Wed 9/23

3:15 pm-2:30 pm

1 stop14h 15m

$542

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Mon 9/7

3:15 pm-1:15 pm

1 stop31h 00m

San Francisco

Sun 9/20

3:15 pm-2:30 pm

1 stop14h 15m

$543

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Wed 9/9

11:15 am-1:15 pm

1 stop35h 00m

San Francisco

Wed 9/16

3:15 pm-2:30 pm

1 stop14h 15m

$551

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Sun 10/18

3:15 pm-1:15 pm

1 stop31h 00m

San Francisco

Thu 10/29

4:05 pm-6:30 pm

1 stop18h 25m

$551

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Sun 10/18

7:15 pm-1:15 pm

1 stop27h 00m

San Francisco

Thu 10/29

4:05 pm-6:30 pm

1 stop18h 25m

$551

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Mon 9/21

7:15 pm-1:15 pm

1 stop27h 00m

San Francisco

Mon 9/28

3:15 pm-2:30 pm

1 stop14h 15m

$552

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Sun 10/18

3:15 pm-1:15 pm

1 stop31h 00m

San Francisco

Thu 10/29

8:47 am-2:30 pm

2 stops21h 43m

$554

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Sun 9/6

6:10 am-7:45 pm

1 stop22h 35m

San Francisco

Wed 9/23

3:10 pm-10:25 pm

2 stops22h 15m

$575

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Thu 9/3

6:15 am-7:45 pm

1 stop22h 30m

San Francisco

Mon 9/7

7:20 pm-10:25 pm

1 stop18h 05m

$576

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of October, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $622.

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

You could potentially save up to 34% 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

Fastest flight time

15h 30m

Direct flights

None
The fastest flight from Trieste to San Francisco takes 15h 30m
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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Frequently asked questions about flying from Trieste to San Francisco

  • 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 6057.7 mi. A reasonable flight in good conditions will take 15h 30m.

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

  • 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.

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

Best airlines flying from Trieste to San Francisco

Compare and see reviews for airlines that fly from Trieste to San Francisco with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $653Free CancellationRating
6.8
8,163 reviews
Search Lufthansa flights

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
South San Francisco
Fremont
Berkeley
Hayward
Walnut Creek
Bodega Bay
Sonoma
Roseville
Santa Clara
Vallejo
Salinas
Sunnyvale
Burlingame
Milpitas
Daly City
Palo Alto
Big Sur

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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