HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Trieste

$422+ Cheap flights from San Francisco (SFO) to Trieste (TRS)

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 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — TRS
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Francisco to Trieste 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 San Francisco to Trieste

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Trieste (TRS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$976
(oojo)

One-way from

$422
(Kiwi.com)
Provider with most accurate pricing for San Francisco-Trieste Ronchi dei Legionari flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Trieste Ronchi dei Legionari flights.
Search Deals
From San Francisco to Trieste Ronchi dei Legionari
Search Deals
One-way flight 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 April 17, 2025.

This oojo deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/223:15 pmSFO - TRS
1 stop14h 15mITA Airways
Mon 8/256:35 amTRS - SFO
1 stop15h 40mITA Airways
Deal found 4/17$976
This Expedia deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/228:50 amSFO - TRS
2 stops28h 45mMultiple Airlines
Mon 8/256:30 amTRS - SFO
2 stops26h 29mMultiple Airlines
Deal found 4/17$1,010
This KAYAK deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/29:05 pmSFO - TRS
2 stops16h 30mLufthansa
Sun 7/202:45 pmTRS - SFO
1 stop30h 55mLufthansa
Deal found 4/17$1,108
This Turkish Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/256:45 pmSFO - TRS
2 stops43h 10mTurkish Airlines
Mon 5/53:15 pmTRS - SFO
2 stops52h 20mTurkish Airlines
Deal found 4/17$1,550
This Emirates deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/15:05 pmSFO - TRS
2 stops44h 50mEmirates
Sun 6/811:15 amTRS - SFO
2 stops35h 45mEmirates
Deal found 4/17$2,207
This TAP AIR PORTUGAL deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/176:45 pmSFO - TRS
3 stops38h 45mTAP AIR PORTUGAL
Sun 6/293:15 pmTRS - SFO
2 stops32h 15mTAP AIR PORTUGAL
Deal found 4/17$2,556

Cheapflights Fare Finder

Customize your flight search to find flights from San Francisco to Trieste that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2025.
Use the filters below to find and compare flights from San Francisco to Trieste that are best for you.

Fly from

San Francisco

Fly to

Trieste

Route

Depart

Return

Price

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Sun 6/22

3:15 pm-2:30 pm

1 stop14h 15m

Trieste Ronchi dei Legionari

Mon 8/25

6:35 am-1:15 pm

1 stop15h 40m

$976

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Sun 6/22

8:50 am-10:35 pm

2 stops28h 45m

Trieste Ronchi dei Legionari

Mon 8/25

6:30 am-11:59 pm

2 stops26h 29m

$1,010

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Wed 7/2

9:05 pm-10:35 pm

2 stops16h 30m

Trieste Ronchi dei Legionari

Sun 7/20

2:45 pm-12:40 pm

1 stop30h 55m

$1,108

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Mon 6/16

12:40 pm-6:30 pm

2 stops20h 50m

Trieste Ronchi dei Legionari

Sun 6/29

6:35 am-10:35 am

2 stops37h 00m

$1,746

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Sun 6/1

5:05 pm-10:55 pm

2 stops44h 50m

Trieste Ronchi dei Legionari

Sun 6/8

11:15 am-2:00 pm

2 stops35h 45m

$2,207

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Tue 6/17

6:45 pm-6:30 pm

3 stops38h 45m

Trieste Ronchi dei Legionari

Sun 6/29

3:15 pm-2:30 pm

2 stops32h 15m

$2,556

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Fri 9/19

7:00 am-11:00 pm

3 stops31h 00m

$422

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Sun 4/27

11:09 am-2:30 pm

2 stops18h 21m

$599

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Sun 10/5

2:40 pm-10:35 pm

1 stop22h 55m

$651

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Sun 10/5

7:30 am-2:30 pm

2 stops22h 00m

$654

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 11 results
1
2

Compare providers for flights from San Francisco to Trieste

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 San Francisco to Trieste in April.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 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 San Francisco-Trieste flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on San Francisco-Trieste flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from San Francisco-Trieste flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Trieste flights, Cheapflights users trust AranGrant the most. AranGrant 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 San Francisco-Trieste 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 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?

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 April 17, 2025.

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.

Rainfall in Trieste by month

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

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.

Temperature in Trieste by month

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

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).

Reviews of airlines servicing Trieste

Get insights into the airlines that provide service to Trieste. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Trieste. Reviews last updated April 17, 2025.
To help decide which airline to fly from San Francisco to Trieste, see what other customers have to say about ANA, Emirates and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.3
Very good
844 reviews

Comfort

8.1

Overall

8.3

Food

7.6

Crew

8.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
ANA
8.3
Very good
844 reviews
ANA
8.3
Very good
844 reviews

Comfort

8.1

Overall

8.3

Food

7.6

Crew

8.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Emirates
8.0
Very good
3,200 reviews
ANA
8.3
Very good
844 reviews

Comfort

8.1

Overall

8.3

Food

7.6

Crew

8.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Delta
8.0
Very good
7,917 reviews
ANA
8.3
Very good
844 reviews

Comfort

8.1

Overall

8.3

Food

7.6

Crew

8.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Turkish Airlines
7.3
Good
3,769 reviews
ANA
8.3
Very good
844 reviews

Comfort

8.1

Overall

8.3

Food

7.6

Crew

8.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
TAP AIR PORTUGAL
7.1
Good
1,837 reviews
ANA
8.3
Very good
844 reviews

Comfort

8.1

Overall

8.3

Food

7.6

Crew

8.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.

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?

    Our cheapest airline available from San Francisco to Trieste is ITA Airways. Our recent data shows that you can find tickets from as low as $976 on this airline. Additional options worth looking into are Lufthansa and Turkish Airlines, starting at $1,108 and $1,746 round-trip.

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

    For one-way options, check prices for ITA Airways. According to our data, you can fly for as low as $599. Users have also found prices from $651 and $654 on Lufthansa and Delta, respectively.

  • 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

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Udine

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.

Top 2 airlines flying from San Francisco to Trieste

Discover the top 2 airlines that operate flights from San Francisco to Trieste. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
ITA AirwaysCheapest$821Average$1,222FlexibilityNo cancel feeOn-time81%
LufthansaCheapest$890Average$1,226FlexibilityNo cancel feeOn-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.