What are the cheapest airlines flying from Trieste to San Francisco round-trip?

Our cheapest airline available from Trieste to San Francisco is Lufthansa. Our recent data shows that you can find tickets from as low as $621 on this airline. Additional options worth looking into are ITA Airways and SWISS, starting at $729 and $806 round-trip. Lufthansa is priced at 19% lower than the current average price of a flight leaving 3 months from now.

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

Travelers seeking maximum savings on their Trieste to San Francisco flight should consider departing on Wednesday mornings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

What is the cheapest day to fly round-trip from Trieste to San Francisco?

Leaving on a Tuesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 37% on the overall cost on flights from Trieste to San Francisco.

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

Our data shows that March tends to be the cheapest month to fly to San Francisco from Trieste. Users have commonly found prices around $767 for the month, but tickets can be as low as $568. Due to multiple factors, prepare for potentially higher prices in September.

Can I find deals for flights from Trieste to San Francisco that include hotel bookings?

Yes. In addition to deals on Trieste to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Trieste to San Francisco?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Trieste to San Francisco.

Can I find deals for business class flights from Trieste to San Francisco?

Yes. Cheapflights offers flight deals from Trieste to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$433+ Flights from Trieste to San Francisco

Q: How much does it cost to fly round-trip from Trieste to San Francisco?

Airfare is below average for this route at the moment. Trieste to San Francisco flights typically cost between $865 and $1,243 in August. The cheapest round-trip price found within the last 3 days was $621 on Lufthansa (Aug 24-Aug 31).

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Cheap flight deals from Trieste to San Francisco

Round-trip from	$621 (Expedia)
One-way from	$433 (Kiwi.com)
Popular in	September
Cheapest in	March
Average price	$898

From Trieste Ronchi dei Legionari to San Francisco

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One-way flight from Trieste Ronchi dei Legionari to San Francisco

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Highest demand for flights based on searches. 13% potential increase in price ($123 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($32 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from Trieste to San Francisco

Cheapest flights from Trieste to San Francisco
Explore the most affordable flight options available from Trieste to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on juillet 31, 2025.

dim. 8/246:30 amTRS - SFO

1 stop18h 25mLufthansa

dim. 8/317:25 pmSFO - TRS

1 stop18h 10mLufthansa

Deal found 7/31

$621

dim. 11/97:15 pmTRS - SFO

1 stop26h 50mITA Airways

sam. 11/223:05 pmSFO - TRS

1 stop18h 25mITA Airways

Deal found 7/30

$729

jeu. 11/136:25 amTRS - SFO

2 stops20h 00mMultiple Airlines

mar. 11/1812:00 pmSFO - TRS

2 stops17h 00mMultiple Airlines

Deal found 7/30

$751

lun. 11/1011:15 amTRS - SFO

2 stops38h 15mSWISS

dim. 11/167:25 pmSFO - TRS

2 stops38h 05mSWISS

Deal found 7/30

$806

dim. 11/911:15 amTRS - SFO

2 stops36h 20mTAP AIR PORTUGAL

mer. 11/194:35 pmSFO - TRS

2 stops40h 55mTAP AIR PORTUGAL

Deal found 7/30

$847

Best flights from Trieste to San Francisco
Discover carefully curated flight deals from Trieste to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated juillet 31, 2025.

dim. 8/246:30 amTRS - SFO

1 stop18h 25mLufthansa

dim. 8/317:25 pmSFO - TRS

1 stop18h 10mLufthansa

Deal found 7/31

$621

dim. 11/97:15 pmTRS - SFO

1 stop26h 50mITA Airways

sam. 11/223:05 pmSFO - TRS

1 stop18h 25mITA Airways

Deal found 7/30

$729

jeu. 11/136:25 amTRS - SFO

2 stops20h 00mMultiple Airlines

mar. 11/1812:00 pmSFO - TRS

2 stops17h 00mMultiple Airlines

Deal found 7/30

$751

lun. 11/1011:15 amTRS - SFO

2 stops38h 15mSWISS

dim. 11/167:25 pmSFO - TRS

2 stops38h 05mSWISS

Deal found 7/30

$806

dim. 11/93:15 pmTRS - SFO

2 stops32h 20mTAP AIR PORTUGAL

lun. 11/174:35 pmSFO - TRS

2 stops40h 55mTAP AIR PORTUGAL

Deal found 7/30

$847

Last-minute flights from Trieste to San Francisco
Discover last-minute flight deals from Trieste to San Francisco. Data last updated juillet 31, 2025 and is based on user searches.

dim. 8/173:15 pmTRS - SFO

2 stops32h 15mTAP AIR PORTUGAL

mar. 9/26:45 pmSFO - TRS

3 stops38h 45mTAP AIR PORTUGAL

Deal found 7/29

$1,546

dim. 8/246:30 amTRS - SFO

1 stop18h 25mLufthansa

dim. 8/317:25 pmSFO - TRS

1 stop18h 10mLufthansa

Deal found 7/31

$621

dim. 8/246:30 amTRS - SFO

2 stops26h 14mMultiple Airlines

dim. 8/3111:44 amSFO - TRS

2 stops25h 51mMultiple Airlines

Deal found 7/30

$810

One-way flights from Trieste to San Francisco
Search for one-way flight options from Trieste to San Francisco. Find affordable one-way fares based on user searches. Data last updated juillet 31, 2025.

dim. 11/237:15 pmTRS - SFO

2 stops28h 20mMultiple Airlines

Deal found 7/29

$433

sam. 11/226:35 amTRS - SFO

1 stop15h 30mITA Airways

Deal found 7/29

$626

mar. 9/236:30 amTRS - SFO

1 stop15h 10mLufthansa

Deal found 7/30

$7,535

Cheapflights Fare Finder

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

dim. 8/24

6:30 am-3:55 pm

1 stop18h 25m

San Francisco

dim. 8/31

7:25 pm-10:35 pm

1 stop18h 10m

$621

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

dim. 11/9

7:15 pm-1:05 pm

1 stop26h 50m

San Francisco

sam. 11/22

3:05 pm-6:30 pm

1 stop18h 25m

$729

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

jeu. 11/13

6:25 am-5:25 pm

2 stops20h 00m

San Francisco

mar. 11/18

12:00 pm-2:00 pm

2 stops17h 00m

$751

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

lun. 11/10

11:15 am-4:30 pm

2 stops38h 15m

San Francisco

dim. 11/16

7:25 pm-6:30 pm

2 stops38h 05m

$806

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

dim. 11/9

3:15 pm-2:35 pm

2 stops32h 20m

San Francisco

lun. 11/17

4:35 pm-6:30 pm

2 stops40h 55m

$847

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

dim. 11/23

7:15 pm-2:35 pm

2 stops28h 20m

$433

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

sam. 11/22

6:35 am-1:05 pm

1 stop15h 30m

$626

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

mar. 9/23

6:30 am-12:40 pm

1 stop15h 10m

$7,535

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Best time to book a flight from Trieste to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Trieste with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Trieste to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Trieste to San Francisco (average of $276). Flying from Trieste to San Francisco in June is currently the most expensive (average of $358). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from TRS to SFO?

Unlike at noon, when flights are generally more expensive, you can save up to 20% on flights from Trieste to San Francisco by exploring options for tickets in the morning.

How much does it cost to fly round-trip from Trieste to San Francisco?

Reviews of airlines servicing San Francisco

See what other customers who have flown with SWISS, TAP AIR PORTUGAL, and Lufthansa from Trieste to San Francisco have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

SWISS

7.5

Good

1,686 reviews

Reviews

1 / 20

10.0

Excellent

Elwyn,Feb 2025

MXP - ZRH

The crew and the entire experience was fantastic! Would highly recommend the company and the flight

SWISS

7.5

Good

1,686 reviews

SWISS

7.5

Good

1,686 reviews

Reviews

1 / 20

10.0

Excellent

Elwyn,Feb 2025

MXP - ZRH

The crew and the entire experience was fantastic! Would highly recommend the company and the flight

TAP AIR PORTUGAL

7.1

Good

1,933 reviews

SWISS

7.5

Good

1,686 reviews

Reviews

1 / 20

10.0

Excellent

Elwyn,Feb 2025

MXP - ZRH

The crew and the entire experience was fantastic! Would highly recommend the company and the flight

Lufthansa

6.8

Okay

7,269 reviews

SWISS

7.5

Good

1,686 reviews

Reviews

1 / 20

10.0

Excellent

Elwyn,Feb 2025

MXP - ZRH

The crew and the entire experience was fantastic! Would highly recommend the company and the flight

ITA Airways

6.7

Okay

1,011 reviews

SWISS

7.5

Good

1,686 reviews

Reviews

1 / 20

10.0

Excellent

Elwyn,Feb 2025

MXP - ZRH

The crew and the entire experience was fantastic! Would highly recommend the company and the flight

Related info for your journey

What are the cheapest airlines flying from Trieste to San Francisco round-trip?
Our cheapest airline available from Trieste to San Francisco is Lufthansa. Our recent data shows that you can find tickets from as low as $621 on this airline. Additional options worth looking into are ITA Airways and SWISS, starting at $729 and $806 round-trip. Lufthansa is priced at 19% lower than the current average price of a flight leaving 3 months from now.
Can I find deals for flights from Trieste to San Francisco that include hotel bookings?
Yes. In addition to deals on Trieste to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Trieste to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Trieste to San Francisco.
Can I find deals for business class flights from Trieste to San Francisco?
Yes. Cheapflights offers flight deals from Trieste to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Trieste to San Francisco?
Currently, January is the cheapest month in which you can book a flight from Trieste to San Francisco (average of $276). Flying from Trieste to San Francisco in June is currently the most expensive (average of $358). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Roseville

Mountain View

Santa Cruz

South San Francisco

Livermore

Turlock

Manteca

Antioch

Hollister

Watsonville

Sunnyvale

Newark

Milpitas

Campbell

Foster City

Capitola

Santa Clara

San Leandro

Burlingame

Redwood City

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$433+ Cheap flights from Trieste (TRS) to San Francisco (SFO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/23. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Trieste to San Francisco with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Trieste to San Francisco

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Trieste to San Francisco

Cheapest flights from Trieste to San FranciscoExplore the most affordable flight options available from Trieste to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on juillet 31, 2025.

Explore the most affordable flight options available from Trieste to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on juillet 31, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Trieste to San Francisco that are best for you.

Best time to book a flight from Trieste to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Trieste with our price prediction graph.

Cheapflights Insights

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

What is the cheapest month to book a flight from Trieste to San Francisco?

What is the cheapest time of day to fly from TRS to SFO?

Find hourly flight availability from Trieste to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated juillet 31, 2025.

How much does it cost to fly round-trip from Trieste to San Francisco?

Reviews of airlines servicing San Francisco

See what other customers who have flown with SWISS, TAP AIR PORTUGAL, and Lufthansa from Trieste to San Francisco have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Trieste to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Trieste to San Francisco round-trip?

Can I find deals for flights from Trieste to San Francisco that include hotel bookings?

How can I find direct flights from Trieste to San Francisco?

Can I find deals for business class flights from Trieste to San Francisco?

What is the cheapest month to book a flight from Trieste to San Francisco?

Traveling to a place near San Francisco?

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Cheapest flights from Trieste to San Francisco
Explore the most affordable flight options available from Trieste to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on juillet 31, 2025.