TRS - SFO

$551 Find Cheap Flights from Trieste to San Francisco

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Trieste to San Francisco departing on 9/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Francisco

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Trieste to San Francisco, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Trieste to San Francisco, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$551
Typical prices: $622-$675
ITA Airways
Thu 9/17Mon 9/21
TRS - SFO • 1 stop
Cheapest one-way
$716
Multiple Airlines
Tue 7/7
TRS - SFO • 3 stops
Top airlines
Cheapest • from $551 (round-trip)
Best reviews • 6.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Trieste and San Francisco. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $603 (round-trip)
Shortest trip • 15h 35m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Francisco!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Trieste to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Trieste to San Francisco

Thu, Sep 17 - Mon, Sep 21
ITA Airways Logo
6:35 am - 1:15 pm
TRS
-
SFO
15h 40m
1 stop
ITA Airways Logo
3:15 pm - 10:55 pm
SFO
-
TRS
22h 40m
1 stop
$551ITA Airways
Mon, Sep 14 - Thu, Sep 24
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
$603ITA Airways
Mon, Sep 14 - Thu, Sep 24
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
$604ITA Airways
Thu, Sep 3 - Fri, Sep 18
Lufthansa Logo
6:15 am - 3:15 pm
TRS
-
SFO
18h 00m
1 stop
Lufthansa Logo
1:55 pm - 9:55 pm
SFO
-
TRS
23h 00m
1 stop
$615Lufthansa
Thu, Oct 15 - Mon, Oct 19
ITA Airways Logo
7:15 pm - 1:15 pm
TRS
-
SFO
27h 00m
1 stop
ITA Airways Logo
3:15 pm - 10:55 pm
SFO
-
TRS
22h 40m
1 stop
$671ITA Airways
Tue, Sep 1 - Sun, Sep 6
KLM Logo
6:35 am - 6:13 pm
TRS
-
SFO
20h 38m
2 stops
KLM Logo
10:45 am - 2:30 pm
SFO
-
TRS
18h 45m
2 stops
$736KLM
Thu, Sep 17 - Thu, Sep 24
ITA Airways Logo
6:35 am - 1:15 pm
TRS
-
SFO
15h 40m
1 stop
ITA Airways Logo
5:00 am - 10:25 am
SFO
-
TRS
20h 25m
2 stops
$748ITA Airways
Tue, Sep 1 - Sun, Sep 6
ITA Airways Logo
6:35 am - 9:10 pm
TRS
-
SFO
23h 35m
2 stops
ITA Airways Logo
3:15 pm - 6:30 pm
SFO
-
TRS
18h 15m
1 stop
$751ITA Airways
Thu, Sep 17 - Mon, Sep 21
ITA Airways Logo
6:35 am - 5:42 pm
TRS
-
SFO
20h 07m
2 stops
ITA Airways Logo
3:15 pm - 6:30 pm
SFO
-
TRS
18h 15m
1 stop
$752ITA Airways
Thu, Sep 17 - Mon, Sep 21
ITA Airways Logo
6:35 am - 5:42 pm
TRS
-
SFO
20h 07m
2 stops
ITA Airways Logo
3:15 pm - 6:30 pm
SFO
-
TRS
18h 15m
1 stop
$753ITA Airways
Booking Insights

KAYAK's insights & trends for Trieste to San Francisco flights

Get data-powered insights and trends into flights from Trieste to San Francisco to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Trieste to San Francisco?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Trieste to San Francisco departing in September.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Trieste to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Trieste to San Francisco is October, where tickets cost $0 (return) on average. On the other hand, the most expensive months are January and June, where the average cost of round-trip tickets is $1,367 and $1,046 respectively.

Good to know

Low seasonMarch
Cheapest flight$551
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly with an average 25% increase in price.
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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Trieste to San Francisco

  • What is the cheapest flight from Trieste to San Francisco?

    In the last 5 days, the lowest price for a flight from Trieste to San Francisco was $716 for a one-way ticket and $551 for a round-trip.

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

    A passport is required to fly from Trieste to San Francisco.

  • Which aircraft models fly most regularly from Trieste to San Francisco?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Trieste to San Francisco?

    Star Alliance is the only airline alliance operating flights between Trieste and San Francisco.

  • How does KAYAK find such low prices on flights from Trieste to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Trieste to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Trieste to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Trieste is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Trieste to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back to Trieste with another airline. Booking your flights between Trieste and SFO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Trieste to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from Trieste up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Trieste to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Trieste to San Francisco. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Trieste to San Francisco? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.8
LufthansaOverall score based on 8088 reviews
7.0Boarding
7.6Crew
6.4Entertainment
6.3Food
6.8Comfort
Airline reviews

Movie selection was nice and chicken with rice dinner was good. I did not like the pizza thing they served for breakfast/lunch. It was like a hot pocket but mostly bread. A small sandwich or cheese and cracker snack and fruit etc would have been much better. Also they did not announce trash pick up so a lot of trash was left by everyone when departing.

8.0 ExcellentCheryl, Jun 2026
MUC - MCO
Read more Lufthansa reviews

Movie selection was nice and chicken with rice dinner was good. I did not like the pizza thing they served for breakfast/lunch. It was like a hot pocket but mostly bread. A small sandwich or cheese and cracker snack and fruit etc would have been much better. Also they did not announce trash pick up so a lot of trash was left by everyone when departing.

Too tight connection. Lufthansa staff pulled 12 of us out of passport control that had tight connections and took us about 1/3 mile AWAY from our gates and put us in another slow, long line. Needless to say all of us missed our flights and the Customer “Service” staff was rude and not helpful at all. Was rebooked from a direct flight to one w a 6hr layover. Asked about an other option that was on my app and was told to book it myself online (which would be $300 extra pp!!). Got rebooked again w a tight connection which was also missed. Rebooked into middle seats that didn’t recline for 9 hr flight!! No compensation (and we paid for seats!) Ended up taking 26hrs to get home from Europe to North Carolina! No longer a fan of Lufthansa—2nd time having these kind of issues w them!

Paid $35 for wifi but wifi didn’t work. Stressful dealing with work mess and no service. Otherwise normal

The food on this flight was better than what we had getting to Rome. The flight was comfortable and the staff was great. One of the staff members was a stickler about the blankets in the aisle, which I get, but still. Overall, great flight and will fly with them again!

Our screen kept turning off ...3 times...had to get crew attention to turn it on again

The legroom was lacking and the entertainment system lacked adequate selection of older films. Modern films are generally not very good.

Perfect airline, super friendly, great service, tasty food. Would fly again.

The flight attendants were wonderful - one man put my carry on in the bin for me. Very attentive service. Loved the blanket and pillow waiting for me in economy. Food was excellent which is a surprise given the reputation of any airline food. Wine was fine with the meals. Delighted with the new movies - flight went by very quickly. I would definitely fly Lufthansa again.

Flight was delayed by several hours and then cancelled due to weather. But Staff was very helpful getting me on a different flight. United should offer food coupons and tooth brush and paste for stranded passengers

Service was excellent. Flight was only about half full, which meant we had tons of room to stretch out. Boarding area was nice and well organized, flight attendants were super friendly and attentive and we loved the 3 snacks!

Everything you need to know for your flight from Trieste to San Francisco

Information on your arrival and departure airports