Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Trieste to San Francisco from $564

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Trieste to San Francisco departing on 10/30. 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
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
6:35 am - 2:05 pmTRS-SFO
15h 30m1 stop
ITA Airways Logo
3:05 pm - 6:30 pmSFO-TRS
18h 25m1 stop
$564ITA Airways
Find Deal
Thu, Oct 30 - Thu, Nov 6
ITA Airways Logo
6:35 am - 1:05 pmTRS-SFO
15h 30m1 stop
ITA Airways Logo
9:10 am - 2:30 pmSFO-TRS
20h 20m2 stops
$586ITA Airways
Find Deal
Thu, Nov 20 - Wed, Dec 3
ITA Airways Logo
1:05 pm - 2:05 pmTRS-SFO
57h 00m2 stops
ITA Airways Logo
3:05 pm - 2:30 pmSFO-TRS
14h 25m1 stop
$587ITA Airways
Find Deal
Thu, Oct 30 - Thu, Nov 6
ITA Airways Logo
7:15 pm - 5:38 pmTRS-SFO
31h 23m2 stops
ITA Airways Logo
10:52 am - 6:30 pmSFO-TRS
22h 38m2 stops
$609ITA Airways
Find Deal
Thu, Nov 20 - Wed, Dec 3
ITA Airways Logo
7:15 pm - 1:05 pmTRS-SFO
26h 50m1 stop
ITA Airways Logo
3:05 pm - 10:55 pmSFO-TRS
22h 50m1 stop
$619ITA Airways
Find Deal
Wed, Nov 5 - Thu, Dec 11
ITA Airways Logo
7:15 pm - 9:50 pmTRS-SFO
35h 35m2 stops
ITA Airways Logo
3:05 pm - 2:30 pmSFO-TRS
14h 25m1 stop
$620ITA Airways
Find Deal
Tue, Nov 11 - Thu, Dec 11
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
$622ITA Airways
Find Deal
Sat, Nov 8 - Thu, Dec 11
Lufthansa Logo
6:15 am - 12:40 pmTRS-SFO
15h 25m1 stop
Lufthansa Logo
2:40 pm - 2:05 pmSFO-TRS
14h 25m1 stop
$687Lufthansa
Find Deal
Thu, Nov 20 - Wed, Dec 3
TAP AIR PORTUGAL Logo
11:15 am - 2:30 pmTRS-SFO
60h 15m2 stops
TAP AIR PORTUGAL Logo
4:35 pm - 6:30 pmSFO-TRS
40h 55m2 stops
$888TAP AIR PORTUGAL
Find Deal
Mon, Nov 10 - Mon, Dec 8
TAP AIR PORTUGAL Logo
11:15 am - 2:30 pmTRS-SFO
60h 15m2 stops
TAP AIR PORTUGAL Logo
4:35 pm - 6:30 pmSFO-TRS
40h 55m2 stops
$892TAP AIR PORTUGAL
Find Deal
Mon, Nov 10 - Wed, Dec 10

ITA Airways flights from Trieste to San Francisco

Our best ITA Airways deals on Trieste to San Francisco flight tickets
ITA Airways
Oct 30
TRS6:35 amTrieste Ronchi dei Legionari
15h 30m
1 stop
SFO2:05 pmSan Francisco
Nov 6
SFO3:05 pmSan Francisco
18h 25m
1 stop
TRS6:30 pmTrieste Ronchi dei Legionari
$564
Find similar
ITA Airways
Nov 20
TRS6:35 amTrieste Ronchi dei Legionari
15h 30m
1 stop
SFO1:05 pmSan Francisco
Dec 3
SFO9:10 amSan Francisco
20h 20m
2 stops
TRS2:30 pmTrieste Ronchi dei Legionari
$586
Find similar
ITA Airways
Oct 30
TRS1:05 pmTrieste Ronchi dei Legionari
57h 00m
2 stops
SFO2:05 pmSan Francisco
Nov 6
SFO3:05 pmSan Francisco
14h 25m
1 stop
TRS2:30 pmTrieste Ronchi dei Legionari
$587
Find similar

TAP AIR PORTUGAL flights from Trieste to San Francisco

Our best TAP AIR PORTUGAL deals on Trieste to San Francisco flight tickets
TAP AIR PORTUGAL
Nov 10
TRS11:15 amTrieste Ronchi dei Legionari
60h 15m
2 stops
SFO2:30 pmSan Francisco
Dec 8
SFO4:35 pmSan Francisco
40h 55m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
$888
Find similar
TAP AIR PORTUGAL
Nov 10
TRS11:15 amTrieste Ronchi dei Legionari
60h 15m
2 stops
SFO2:30 pmSan Francisco
Dec 10
SFO4:35 pmSan Francisco
40h 55m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
$892
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 October 16, 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 10/30

6:35 am-2:05 pm

1 stop15h 30m

San Francisco

Thu 11/6

3:05 pm-6:30 pm

1 stop18h 25m

$564

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Thu 11/20

6:35 am-1:05 pm

1 stop15h 30m

San Francisco

Wed 12/3

9:10 am-2:30 pm

2 stops20h 20m

$586

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Thu 10/30

1:05 pm-2:05 pm

2 stops57h 00m

San Francisco

Thu 11/6

3:05 pm-2:30 pm

1 stop14h 25m

$587

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Thu 11/20

7:15 pm-5:38 pm

2 stops31h 23m

San Francisco

Wed 12/3

10:52 am-6:30 pm

2 stops22h 38m

$609

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Wed 11/5

7:15 pm-1:05 pm

1 stop26h 50m

San Francisco

Thu 12/11

3:05 pm-10:55 pm

1 stop22h 50m

$619

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Tue 11/11

7:15 pm-9:50 pm

2 stops35h 35m

San Francisco

Thu 12/11

3:05 pm-2:30 pm

1 stop14h 25m

$620

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Sat 11/8

6:35 am-1:05 pm

1 stop15h 30m

San Francisco

Thu 12/11

3:05 pm-6:30 pm

1 stop18h 25m

$622

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Thu 11/20

6:15 am-12:40 pm

1 stop15h 25m

San Francisco

Wed 12/3

2:40 pm-2:05 pm

1 stop14h 25m

$687

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Mon 11/10

11:15 am-2:30 pm

2 stops60h 15m

San Francisco

Mon 12/8

4:35 pm-6:30 pm

2 stops40h 55m

$888

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Mon 11/10

11:15 am-2:30 pm

2 stops60h 15m

San Francisco

Wed 12/10

4:35 pm-6:30 pm

2 stops40h 55m

$892

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 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 10% 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.
Search flight deals

  • 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 15h 25m.

  • 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
Sonoma
Bodega Bay
Calistoga
Roseville
Hayward
Big Sur
Santa Clara
Fremont
Daly City
Berkeley
Vallejo
Walnut Creek
Half Moon Bay
Salinas
Turlock
South San Francisco
Pacific Grove

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.

An easier way to manage your San Francisco 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 11/15
Sat 11/22
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States