TRS - SFO

$441 Find Cheap Flights from Trieste to San Francisco - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$512
Typical prices: $674-$1,056
ITA Airways
Mon 10/22Sat 10/27
TRS - SFO • 1 stop
Cheapest one-way
$441
Typical prices: $613-$718
Multiple Airlines
Mon 12/3
TRS - SFO • 3 stops
Nonstop flights
Not available
There are currently no direct flights between Trieste and San Francisco. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
September
Cheapest • 16% price drop
May
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Rome Fiumicino (FCO)
Cheapest • Avg $786 (round-trip)
Frankfurt am Main (FRA)
Shortest trip • 15h 34m (one-way)
Insights
Insights
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Flight Deals

Cheap Flights from Trieste to San Francisco (TRS-SFO)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Trieste to San Francisco

Thu, Oct 22 - Tue, Oct 27
Multiple Airlines Logo
7:15 pm - 1:15 pmTRS  Trieste Ronchi dei Legionari-SFO San Francisco
27h 00m1 stop Rome Fiumicino
Multiple Airlines Logo
8:47 am - 2:30 pmSFO  San Francisco-TRS Trieste Ronchi dei Legionari
21h 43m2 stops Los Angeles Rome Fiumicino
$512Multiple Airlines
Thu, Oct 22 - Tue, Oct 27
ITA Airways Logo
7:15 pm - 1:15 pmTRS  Trieste Ronchi dei Legionari-SFO San Francisco
27h 00m1 stop Rome Fiumicino
ITA Airways Logo
4:05 pm - 2:30 pmSFO  San Francisco-TRS Trieste Ronchi dei Legionari
14h 25m1 stop Rome Fiumicino
$515ITA Airways
Thu, Oct 22 - Tue, Oct 27
ITA Airways Logo
7:15 pm - 1:15 pmTRS  Trieste Ronchi dei Legionari-SFO San Francisco
27h 00m1 stop Rome Fiumicino
ITA Airways Logo
4:05 pm - 2:30 pmSFO  San Francisco-TRS Trieste Ronchi dei Legionari
14h 25m1 stop Rome Fiumicino
$517ITA Airways
Thu, Oct 22 - Tue, Oct 27
Multiple Airlines Logo
3:15 pm - 1:15 pmTRS  Trieste Ronchi dei Legionari-SFO San Francisco
31h 00m1 stop Rome Fiumicino
Multiple Airlines Logo
10:21 am - 2:30 pmSFO  San Francisco-TRS Trieste Ronchi dei Legionari
20h 09m2 stops Los Angeles Rome Fiumicino
$551Multiple Airlines
Fri, Nov 6 - Thu, Nov 12
Air France Logo
6:35 am - 1:15 amTRS  Trieste Ronchi dei Legionari-SFO San Francisco
27h 40m2 stops Rome Fiumicino New York John F Kennedy Intl
Air France Logo
7:00 am - 2:30 pmSFO  San Francisco-TRS Trieste Ronchi dei Legionari
22h 30m2 stops New York John F Kennedy Intl Rome Fiumicino
$578Air France
Thu, Oct 22 - Tue, Oct 27
KLM Logo
6:35 am - 12:34 amTRS  Trieste Ronchi dei Legionari-SFO San Francisco
26h 59m2 stops Rome Fiumicino New York John F Kennedy Intl
KLM Logo
8:55 am - 2:30 pmSFO  San Francisco-TRS Trieste Ronchi dei Legionari
21h 35m2 stops New York John F Kennedy Intl Rome Fiumicino
$580KLM
Thu, Oct 22 - Tue, Oct 27
Multiple Airlines Logo
6:35 am - 8:06 pmTRS  Trieste Ronchi dei Legionari-SFO San Francisco
22h 31m2 stops Rome Fiumicino New York John F Kennedy Intl
Multiple Airlines Logo
12:08 pm - 2:30 pmSFO  San Francisco-TRS Trieste Ronchi dei Legionari
18h 22m2 stops Minneapolis St Paul Rome Fiumicino
$589Multiple Airlines
Fri, Nov 6 - Thu, Nov 12
Multiple Airlines Logo
6:35 am - 6:10 pmTRS  Trieste Ronchi dei Legionari-SFO San Francisco
20h 35m2 stops Rome Fiumicino Los Angeles
Multiple Airlines Logo
3:05 pm - 2:30 pmSFO  San Francisco-TRS Trieste Ronchi dei Legionari
14h 25m1 stop Rome Fiumicino
$728Multiple Airlines
Thu, Nov 12 - Mon, Nov 16
United Airlines Logo
6:35 am - 9:29 pmTRS  Trieste Ronchi dei Legionari-SFO San Francisco
23h 54m2 stops Rome Fiumicino Washington, D.C. Dulles Intl
United Airlines Logo
9:30 pm - 10:25 amSFO  San Francisco-TRS Trieste Ronchi dei Legionari
27h 55m2 stops Newark Rome Fiumicino
$791United Airlines
Sat, Oct 3 - Sat, Oct 17
Air France Logo
6:35 am - 11:26 pmTRS  Trieste Ronchi dei Legionari-SFO San Francisco
25h 51m2 stops Rome Fiumicino New York John F Kennedy Intl
Air France Logo
11:45 am - 6:30 pmSFO  San Francisco-TRS Trieste Ronchi dei Legionari
21h 45m2 stops Detroit Metropolitan Wayne County Rome Fiumicino
$845Air France
Booking Insights

Price, demand and travel trends for Trieste to San Francisco flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Trieste to San Francisco with more confidence.

What's the cheapest day of the week to fly from Trieste to San Francisco?

Tuesday is the cheapest day of the week to fly from Trieste to San Francisco, it is 26% cheaper than the average day. Saturday is the most expensive day with flight prices 35% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

•September is the cheapest month to fly from Trieste to San Francisco at $658 round-trip.
•January ($1,367) and June ($1,046) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 107% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Key details for Trieste to San Francisco flights

Low season

January

Cheapest flight

$441
Best time to beat the crowds but there is an average 75% increase in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Trieste to San Francisco

When to book flights from Trieste to San Francisco

Are your dates flexible? Find out the best times to travel from Trieste to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Trieste to San Francisco flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • What cabin classes can I book on flights from Trieste to San Francisco?

    Only Business Class is available on flights from Trieste to San Francisco.

  • How long is a flight from Trieste to San Francisco?

    A nonstop flight from Trieste to San Francisco takes 0h 00m, covering 6,049 miles.

  • Do I need a passport to fly from Trieste to San Francisco?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Trieste to San Francisco flight?

    Round-trip flights from Trieste to San Francisco range from $674 to $1,056, with an average of $780 over the past 12 months. Anything below $674 counts as a good deal.

  • Have flight prices from Trieste to San Francisco changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $512 to $1,870. That means the highest observed fare was about 4x higher than the lowest one.

  • How are flight prices from Trieste to San Francisco looking right now?

    One-way fares from Trieste to San Francisco are currently lower than usual. Average one-way flight prices are about $546, which is 18% below the typical average for this route.

  • What car rental options are available at San Francisco Airport (SFO)?

    San Francisco Airport (SFO) hosts 5 major car rental companies, with daily rates starting from around $15 for economy cars. Top options include:
    • Thrifty
    • Europcar
    • Dollar
    • Hertz
    • Fox

  • Which airports can I use when flying from Trieste to San Francisco?

    Flights from Trieste to San Francisco usually depart from Trieste Ronchi dei Legionari (TRS) and arrive at San Francisco (SFO).

  • Which airports do connecting flights from Trieste to San Francisco pass through?

    Connecting flights from Trieste to San Francisco most commonly pass through:

    • Rome Fiumicino (FCO) - 53% of one-stop connections
    • Frankfurt am Main (FRA) - 47% of one-stop connections
    Together, these airports account for 100% of one-stop bookings on this route.

  • Can I save money by using flexible dates for flights from Trieste to San Francisco?

    Yes. Being flexible with your travel dates can save you up to 45% on the Trieste to San Francisco route. Tuesday is the cheapest departure day at $584 round-trip on average, while Saturday is the most expensive at $1,056, a difference of $472. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Trieste to San Francisco?

    Flying via Frankfurt am Main (FRA) gives the shortest average 1-stop total travel time at 15h 34m, compared with 16h 01m via Rome Fiumicino (FCO).

  • What is the time difference between Trieste and San Francisco?

    San Francisco is 9 hours behind Trieste (Pacific Time vs Central European Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in San Francisco?

    Some of the most popular sights in San Francisco are Fisherman's Wharf, Union Square and Moscone Center. These are among the most viewed places in San Francisco on KAYAK.

Your guide to booking Trieste to San Francisco flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Tuesday departure instead of Saturday. On this route, Tuesday flights average $584 - about $472 less than Saturday (45% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Trieste to San Francisco trip for September. Fares historically average $658 round-trip in that month - typically $709 less than the most expensive month, which is January (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to San Francisco Airport.
    - Grand Hyatt At Sfo

More options for your flight from Trieste to San Francisco

Complete your trip to San Francisco with a hotel stay or car rental

Car rentals in San Francisco
Hotels in San Francisco
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