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 $783 on this airline. Additional options worth looking into are ITA Airways and TAP AIR PORTUGAL, starting at $919 and $1,147 round-trip.

What are the cheapest airlines to fly from Trieste to San Francisco one-way?

$717 is the cheapest one-way deal found within the past few days, from ITA Airways. You may also be able to find cheap deals on Turkish Airlines and TAP AIR PORTUGAL, with prices starting from $808 and $1,321, respectively.

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.

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 $788 for the month, but tickets can be as low as $568. Due to multiple factors, prepare for potentially higher prices in November.

Most accurate provider : When it comes to deals on Trieste-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Trieste-San Francisco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Trieste-San Francisco flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Trieste-San Francisco flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Trieste-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$517+ Flights from Trieste to San Francisco

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Trieste to San Francisco with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Trieste to San Francisco

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$783 (Lufthansa)
One-way from	$517 (Kiwi.com)
Popular in	November
Cheapest in	March
Average price	$790

Provider with most accurate pricing for Trieste Ronchi dei Legionari-San Francisco flight deals.

Search Deals

Provider most trusted by Cheapflights users for Trieste Ronchi dei Legionari-San Francisco flights.

Search Deals

From Trieste Ronchi dei Legionari to San Francisco

Search Deals

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

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($70 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

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 April 17, 2025.

Sun 8/176:30 amTRS - SFO

2 stops43h 25mLufthansa

Tue 9/21:10 pmSFO - TRS

2 stops24h 25mLufthansa

Deal found 4/17

$783

Mon 4/287:15 pmTRS - SFO

2 stops34h 37mITA Airways

Thu 6/199:00 pmSFO - TRS

2 stops28h 25mITA Airways

Deal found 4/17

$919

Sun 8/1711:15 amTRS - SFO

2 stops36h 15mTAP AIR PORTUGAL

Tue 9/26:45 pmSFO - TRS

3 stops38h 50mTAP AIR PORTUGAL

Deal found 4/17

$1,147

Mon 4/287:15 pmTRS - SFO

2 stops28h 20mMultiple Airlines

Thu 6/197:10 amSFO - TRS

3 stops26h 20mMultiple Airlines

Deal found 4/17

$1,558

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 April 17, 2025.

Sun 8/176:30 amTRS - SFO

2 stops43h 25mLufthansa

Tue 9/21:10 pmSFO - TRS

2 stops24h 25mLufthansa

Deal found 4/17

$783

Mon 4/287:15 pmTRS - SFO

2 stops34h 37mITA Airways

Thu 6/199:00 pmSFO - TRS

2 stops28h 25mITA Airways

Deal found 4/17

$919

Sun 8/1711:15 amTRS - SFO

2 stops36h 15mTAP AIR PORTUGAL

Tue 9/26:45 pmSFO - TRS

3 stops38h 50mTAP AIR PORTUGAL

Deal found 4/17

$1,147

Mon 4/287:15 pmTRS - SFO

2 stops28h 20mMultiple Airlines

Thu 6/197:10 amSFO - TRS

3 stops26h 20mMultiple Airlines

Deal found 4/17

$1,558

Last-minute flights from Trieste to San Francisco
Discover last-minute flight deals from Trieste to San Francisco. Data last updated April 17, 2025 and is based on user searches.

Mon 4/286:30 amTRS - SFO

1 stop15h 10mLufthansa

Thu 6/192:50 pmSFO - TRS

2 stops22h 35mLufthansa

Deal found 4/17

$846

Mon 4/287:15 pmTRS - SFO

2 stops34h 37mITA Airways

Thu 6/199:00 pmSFO - TRS

2 stops28h 25mITA Airways

Deal found 4/17

$919

Mon 4/287:15 pmTRS - SFO

2 stops28h 20mMultiple Airlines

Thu 6/197:10 amSFO - TRS

3 stops26h 20mMultiple Airlines

Deal found 4/17

$1,558

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 April 17, 2025.

Thu 6/196:35 amTRS - SFO

3 stops35h 55mMultiple Airlines

Deal found 4/17

$517

Wed 7/27:15 pmTRS - SFO

1 stop27h 00mITA Airways

Deal found 4/17

$717

Sat 7/193:15 pmTRS - SFO

2 stops52h 20mTurkish Airlines

Deal found 4/17

$808

Mon 7/143:15 pmTRS - SFO

3 stops34h 30mTAP AIR PORTUGAL

Deal found 4/17

$1,321

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

Sun 8/17

6:30 am-4:55 pm

2 stops43h 25m

San Francisco

Tue 9/2

1:10 pm-10:35 pm

2 stops24h 25m

$783

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Mon 4/28

7:15 pm-8:52 pm

2 stops34h 37m

San Francisco

Thu 6/19

9:00 pm-10:25 am

2 stops28h 25m

$919

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Sun 8/17

11:15 am-2:30 pm

2 stops36h 15m

San Francisco

Tue 9/2

6:45 pm-6:35 pm

3 stops38h 50m

$1,147

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Mon 4/28

7:15 pm-2:35 pm

2 stops28h 20m

San Francisco

Thu 6/19

7:10 am-6:30 pm

3 stops26h 20m

$1,558

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Thu 6/19

6:35 am-9:30 am

3 stops35h 55m

$517

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Wed 7/2

7:15 pm-1:15 pm

1 stop27h 00m

$717

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Sat 7/19

3:15 pm-10:35 am

2 stops52h 20m

$808

TriesteSan Francisco

TRS - SFO

TRSSFO

Trieste Ronchi dei Legionari

Mon 7/14

3:15 pm-4:45 pm

3 stops34h 30m

$1,321

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Compare providers for flights from Trieste to San Francisco

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Trieste to San Francisco in April.

Provider	Price Accuracy	Trust Score*
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Trieste-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Trieste-San Francisco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Trieste-San Francisco flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Trieste-San Francisco flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Trieste-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 $393). 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.

Rainfall in San Francisco by month

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.

Temperature in San Francisco by month

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).

Reviews of airlines servicing San Francisco

Turkish Airlines

7.3

Good

3,769 reviews

Reviews

1 / 20

4.0

Okay

Leslie,Feb 2025

IST - LAX

Food and staff were nice but difficulty with WIFI, console sound not working. X-cover insurance a scam. Denying purchase of insurance even with proof. Ridiculous.

Turkish Airlines

7.3

Good

3,769 reviews

Turkish Airlines

7.3

Good

3,769 reviews

Reviews

1 / 20

4.0

Okay

Leslie,Feb 2025

IST - LAX

Food and staff were nice but difficulty with WIFI, console sound not working. X-cover insurance a scam. Denying purchase of insurance even with proof. Ridiculous.

TAP AIR PORTUGAL

7.1

Good

1,839 reviews

Turkish Airlines

7.3

Good

3,769 reviews

Reviews

1 / 20

4.0

Okay

Leslie,Feb 2025

IST - LAX

Food and staff were nice but difficulty with WIFI, console sound not working. X-cover insurance a scam. Denying purchase of insurance even with proof. Ridiculous.

ITA Airways

6.7

Okay

964 reviews

Turkish Airlines

7.3

Good

3,769 reviews

Reviews

1 / 20

4.0

Okay

Leslie,Feb 2025

IST - LAX

Food and staff were nice but difficulty with WIFI, console sound not working. X-cover insurance a scam. Denying purchase of insurance even with proof. Ridiculous.

Lufthansa

6.7

Okay

7,012 reviews

Turkish Airlines

7.3

Good

3,769 reviews

Reviews

1 / 20

4.0

Okay

Leslie,Feb 2025

IST - LAX

Food and staff were nice but difficulty with WIFI, console sound not working. X-cover insurance a scam. Denying purchase of insurance even with proof. Ridiculous.

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 $783 on this airline. Additional options worth looking into are ITA Airways and TAP AIR PORTUGAL, starting at $919 and $1,147 round-trip.
What are the cheapest airlines to fly from Trieste to San Francisco one-way?
$717 is the cheapest one-way deal found within the past few days, from ITA Airways. You may also be able to find cheap deals on Turkish Airlines and TAP AIR PORTUGAL, with prices starting from $808 and $1,321, respectively.
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 $393). 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

Turlock

South San Francisco

Fairfield

Manteca

Sausalito

Richmond

Watsonville

Hollister

Milpitas

Antioch

Vallejo

Newark

Hayward

Alameda

Sunnyvale

Livermore

Campbell

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Trieste to San Francisco

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest$508	Average$763	FlexibilityNo cancel fee	On-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$517+ 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 6/19. 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

Most accurate provider

Most trusted provider

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 April 17, 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 April 17, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from Trieste to San Francisco

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Trieste to San Francisco in April.

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 April 17, 2025.

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

Reviews of airlines servicing San Francisco

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?

What are the cheapest airlines to fly from Trieste to San Francisco one-way?

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 Trieste?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Trieste to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Trieste to San Francisco

100% Free

Book with Flexibility

Travel Smart

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 April 17, 2025.