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

Our cheapest airline available from San Francisco to Trieste is Lufthansa. Our recent data shows that you can find tickets from as low as $622 on this airline. Additional options worth looking into are ITA Airways and Turkish Airlines, starting at $770 and $1,428 round-trip.

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

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

In terms of precipitation, rainfall in Trieste ranges from 2.4 - 4.5 inches per month. November is typically the wettest month, when rainfall can reach 4.5 in. February is typically the driest time to visit Trieste when rainfall is around 2.4 in.

If weather is an important factor for your trip to Trieste, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

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

Friday flights are found to be more expensive to fly from San Francisco to Trieste. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Trieste.

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

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

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

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

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

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

$613+ Flights from San Francisco to Trieste

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Cheap flight deals from San Francisco to Trieste

Round-trip from	$613 (Booking.com)

From San Francisco to Trieste Ronchi dei Legionari

Search Deals

Find flight deals from San Francisco to Trieste

Cheapest flights from San Francisco to Trieste
Explore the most affordable flight options available from San Francisco to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Tue 8/262:40 pmSFO - TRS

1 stop14h 25mMultiple Airlines

Tue 9/22:45 pmTRS - SFO

2 stops29h 26mMultiple Airlines

Deal found 7/27

$613

Wed 9/177:25 pmSFO - TRS

1 stop18h 10mLufthansa

Wed 9/246:30 amTRS - SFO

1 stop18h 30mLufthansa

Deal found 7/28

$622

Wed 9/173:15 pmSFO - TRS

2 stops20h 40mITA Airways

Wed 9/246:30 amTRS - SFO

2 stops39h 55mITA Airways

Deal found 7/28

$770

Sun 8/106:45 pmSFO - TRS

2 stops43h 10mTurkish Airlines

Tue 8/196:35 amTRS - SFO

2 stops43h 05mTurkish Airlines

Deal found 7/29

$1,186

Best flights from San Francisco to Trieste
Discover carefully curated flight deals from San Francisco to Trieste that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2025.

Tue 8/262:40 pmSFO - TRS

1 stop14h 25mMultiple Airlines

Tue 9/22:45 pmTRS - SFO

2 stops29h 26mMultiple Airlines

Deal found 7/27

$613

Wed 9/177:25 pmSFO - TRS

1 stop18h 10mLufthansa

Wed 9/246:30 amTRS - SFO

1 stop18h 30mLufthansa

Deal found 7/28

$622

Wed 9/173:15 pmSFO - TRS

2 stops20h 40mITA Airways

Wed 9/246:30 amTRS - SFO

2 stops39h 55mITA Airways

Deal found 7/28

$770

Fri 10/1012:40 pmSFO - TRS

2 stops25h 15mTurkish Airlines

Sun 10/193:15 pmTRS - SFO

2 stops28h 20mTurkish Airlines

Deal found 7/28

$1,428

Mon 8/114:20 pmSFO - TRS

2 stops21h 35mTAP AIR PORTUGAL

Mon 8/1811:15 amTRS - SFO

3 stops38h 30mTAP AIR PORTUGAL

Deal found 7/29

$1,810

Last-minute flights from San Francisco to Trieste
Discover last-minute flight deals from San Francisco to Trieste. Data last updated July 29, 2025 and is based on user searches.

Tue 7/293:15 pmSFO - TRS

1 stop22h 40mITA Airways

Tue 8/127:15 pmTRS - SFO

1 stop27h 10mITA Airways

Deal found 7/26

$922

Thu 7/314:20 pmSFO - TRS

2 stops41h 10mTAP AIR PORTUGAL

Mon 8/1111:15 amTRS - SFO

2 stops60h 20mTAP AIR PORTUGAL

Deal found 7/26

$1,517

Fri 8/812:40 pmSFO - TRS

2 stops25h 15mTurkish Airlines

Fri 8/156:35 amTRS - SFO

2 stops37h 00mTurkish Airlines

Deal found 7/29

$7,472

Fri 8/87:25 pmSFO - TRS

1 stop18h 00mLufthansa

Fri 8/156:35 amTRS - SFO

2 stops19h 51mLufthansa

Deal found 7/29

$7,871

Sun 8/106:45 pmSFO - TRS

2 stops43h 10mTurkish Airlines

Tue 8/196:35 amTRS - SFO

2 stops43h 05mTurkish Airlines

Deal found 7/29

$1,186

Tue 8/262:40 pmSFO - TRS

1 stop14h 25mMultiple Airlines

Tue 9/22:45 pmTRS - SFO

2 stops29h 26mMultiple Airlines

Deal found 7/27

$613

Tue 8/262:40 pmSFO - TRS

1 stop14h 25mLufthansa

Tue 9/22:45 pmTRS - SFO

1 stop14h 10mLufthansa

Deal found 7/27

$627

One-way flights from San Francisco to Trieste
Search for one-way flight options from San Francisco to Trieste. Find affordable one-way fares based on user searches. Data last updated July 29, 2025.

Fri 8/81:55 pmSFO - TRS

2 stops59h 30mAustrian Airlines

Deal found 7/27

$854

Thu 9/183:15 pmSFO - TRS

1 stop14h 15mITA Airways

Deal found 7/28

$3,972

Sun 9/287:30 pmSFO - TRS

2 stops18h 25mMultiple Airlines

Deal found 7/28

$10,573

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Tue 8/26

2:40 pm-2:05 pm

1 stop14h 25m

Trieste Ronchi dei Legionari

Tue 9/2

2:45 pm-11:11 am

2 stops29h 26m

$613

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Wed 9/17

7:25 pm-10:35 pm

1 stop18h 10m

Trieste Ronchi dei Legionari

Wed 9/24

6:30 am-4:00 pm

1 stop18h 30m

$622

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Wed 9/17

3:15 pm-8:55 pm

2 stops20h 40m

Trieste Ronchi dei Legionari

Wed 9/24

6:30 am-1:25 pm

2 stops39h 55m

$770

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Fri 10/10

12:40 pm-10:55 pm

2 stops25h 15m

Trieste Ronchi dei Legionari

Sun 10/19

3:15 pm-10:35 am

2 stops28h 20m

$1,428

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Mon 8/11

4:20 pm-10:55 pm

2 stops21h 35m

Trieste Ronchi dei Legionari

Mon 8/18

11:15 am-4:45 pm

3 stops38h 30m

$1,810

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Fri 8/8

1:55 pm-10:25 am

2 stops59h 30m

$854

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Thu 9/18

3:15 pm-2:30 pm

1 stop14h 15m

$3,972

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Sun 9/28

7:30 pm-10:55 pm

2 stops18h 25m

$10,573

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Best time to book a flight from San Francisco to Trieste

Have a flexible travel schedule? Discover the best time to fly to Trieste from San Francisco 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 San Francisco to Trieste

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

Unlike in the morning, when flights are generally more expensive, you can save up to 12% on flights from San Francisco to Trieste by exploring options for tickets at noon.

Reviews of airlines servicing Trieste

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

Austrian Airlines

7.6

Good

821 reviews

Reviews

1 / 20

10.0

Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

Austrian Airlines

7.6

Good

821 reviews

Austrian Airlines

7.6

Good

821 reviews

Reviews

1 / 20

10.0

Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

Turkish Airlines

7.3

Good

3,925 reviews

Austrian Airlines

7.6

Good

821 reviews

Reviews

1 / 20

10.0

Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

TAP AIR PORTUGAL

7.1

Good

1,929 reviews

Austrian Airlines

7.6

Good

821 reviews

Reviews

1 / 20

10.0

Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

Lufthansa

6.8

Okay

7,265 reviews

Austrian Airlines

7.6

Good

821 reviews

Reviews

1 / 20

10.0

Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

ITA Airways

6.7

Okay

1,009 reviews

Austrian Airlines

7.6

Good

821 reviews

Reviews

1 / 20

10.0

Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

Related info for your journey

What are the cheapest airlines flying from San Francisco to Trieste round-trip?
Our cheapest airline available from San Francisco to Trieste is Lufthansa. Our recent data shows that you can find tickets from as low as $622 on this airline. Additional options worth looking into are ITA Airways and Turkish Airlines, starting at $770 and $1,428 round-trip.
Can I find deals for flights from San Francisco to Trieste that include hotel bookings?
Yes. In addition to deals on San Francisco to Trieste flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Francisco to Trieste?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Trieste.
Can I find deals for business class flights from San Francisco to Trieste?
Yes. Cheapflights offers flight deals from San Francisco to Trieste by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for San Francisco to Trieste

Top 2 airlines flying from San Francisco to Trieste

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest$693	Average$1,460	FlexibilityNo cancel fee	On-time76%
ITA Airways	Cheapest$762	Average$1,115	FlexibilityNo cancel fee	On-time81%

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$613+ Cheap flights from San Francisco (SFO) to Trieste (TRS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/26. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Francisco to Trieste with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from San Francisco to Trieste

Round-trip from

Find flight deals from San Francisco to Trieste

Cheapest flights from San Francisco to TriesteExplore the most affordable flight options available from San Francisco to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Explore the most affordable flight options available from San Francisco to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from San Francisco to Trieste

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

Cheapflights Insights

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

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

Find hourly flight availability from San Francisco to Trieste. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

Reviews of airlines servicing Trieste

See what other customers who have flown with Austrian Airlines, Turkish Airlines, and TAP AIR PORTUGAL from San Francisco to Trieste 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 San Francisco to Trieste. 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 San Francisco to Trieste round-trip?

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

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

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

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

Top 2 airlines flying from San Francisco to Trieste

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from San Francisco to Trieste
Explore the most affordable flight options available from San Francisco to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.