Which airlines fly to Trieste?

United Airlines, Delta, British Airways and Lufthansa are the most popular airlines that fly from United States to Trieste on a routine basis, according to our data. You should be able to find flights to Trieste with these airlines and other airlines flying from United States.

Lufthansa Flights to Trieste

Lufthansa is a popular choice for users traveling to Trieste. It operates 10 flights every week to Trieste, most often flying from Frankfurt am Main. Lufthansa ticket prices will depend on when and where you need to fly from - deals as low as $499 (from Boston Logan Intl) have been found by momondo users. In 8,199 reviews, momondo users have rated Lufthansa at an average score of 6.8/10.

ITA Airways Flights to Trieste

ITA Airways flight deals to Trieste start from $481 - this is the best price found recently on momondo, and was a round-trip journey departing from Boston Logan Intl. Over any normal week, ITA Airways flight prices are typically higher, but vary depending on where you fly from - Frankfurt am Main is the most popular ITA Airways departure point to Trieste so generally has the most availability. ITA Airways is scored a 6.7/10 in 1,321 reviews.

How long does it take to fly to Trieste?

Average flight duration from United States to Trieste depends on which airport you fly into and out of. Flying from Los Angeles to Venice Marco Polo is 14h on average, while flying from San Francisco to Venice Marco Polo is 14h 05m on average. Venice Marco Polo is the most popular airport in Trieste.

$326 Cheap Flights to Trieste in 2026

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Find the cheapest flights from the United States to Trieste

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:15 pm - 4:00 pmBOS Boston Logan Intl-TRS Trieste Ronchi dei Legionari

12h 45m1 stop Dublin

10:15 pm - 9:05 pmTRS Trieste Ronchi dei Legionari-BOS Boston Logan Intl

28h 50m2 stops London Stansted Barcelona-El Prat

$680Multiple Airlines

Wed, Oct 14 - Tue, Oct 20

11:50 pm - 10:50 amJFK New York John F Kennedy Intl-TRS Trieste Ronchi dei Legionari

29h 00m2 stops Barcelona-El Prat Luqa Malta Intl

1:30 pm - 10:00 pmTRS Trieste Ronchi dei Legionari-JFK New York John F Kennedy Intl

14h 30m1 stop Barcelona-El Prat

$723Multiple Airlines

Tue, Sep 29 - Tue, Oct 6

4:40 pm - 6:30 pmJFK New York John F Kennedy Intl-TRS Trieste Ronchi dei Legionari

19h 50m1 stop Rome Fiumicino

3:15 pm - 6:55 pmTRS Trieste Ronchi dei Legionari-JFK New York John F Kennedy Intl

33h 40m1 stop Rome Fiumicino

$726ITA Airways

Wed, Dec 2 - Tue, Dec 8

11:50 pm - 3:00 pmJFK New York John F Kennedy Intl-TRS Trieste Ronchi dei Legionari

33h 10m1 stop Barcelona-El Prat

1:30 pm - 10:00 pmTRS Trieste Ronchi dei Legionari-JFK New York John F Kennedy Intl

14h 30m1 stop Barcelona-El Prat

$727Multiple Airlines

Tue, Sep 29 - Tue, Oct 6

11:50 pm - 10:50 amJFK New York John F Kennedy Intl-TRS Trieste Ronchi dei Legionari

29h 00m2 stops Barcelona-El Prat Luqa Malta Intl

1:30 pm - 10:00 pmTRS Trieste Ronchi dei Legionari-JFK New York John F Kennedy Intl

14h 30m1 stop Barcelona-El Prat

$728Multiple Airlines

Tue, Sep 29 - Tue, Oct 6

9:05 pm - 6:30 pmJFK New York John F Kennedy Intl-TRS Trieste Ronchi dei Legionari

15h 25m1 stop Rome Fiumicino

6:35 am - 2:15 pmTRS Trieste Ronchi dei Legionari-JFK New York John F Kennedy Intl

13h 40m1 stop Rome Fiumicino

$761ITA Airways

Tue, Dec 1 - Wed, Dec 9

5:20 pm - 2:30 pmBOS Boston Logan Intl-TRS Trieste Ronchi dei Legionari

15h 10m1 stop Rome Fiumicino

6:35 am - 1:45 pmTRS Trieste Ronchi dei Legionari-BOS Boston Logan Intl

13h 10m1 stop Rome Fiumicino

$765ITA Airways

Sun, Nov 15 - Fri, Dec 4

7:00 am - 2:00 pmLAX Los Angeles-TRS Trieste Ronchi dei Legionari

22h 00m2 stops Newark Frankfurt am Main

6:20 am - 1:10 pmTRS Trieste Ronchi dei Legionari-LAX Los Angeles

15h 50m1 stop Frankfurt am Main

$871Lufthansa

Wed, Oct 14 - Tue, Oct 20

7:00 am - 2:00 pmLAX Los Angeles-TRS Trieste Ronchi dei Legionari

22h 00m2 stops Newark Frankfurt am Main

6:10 am - 1:10 pmTRS Trieste Ronchi dei Legionari-LAX Los Angeles

16h 00m1 stop Frankfurt am Main

$871Lufthansa

Wed, Oct 14 - Wed, Oct 21

3:35 pm - 1:45 pmIAH Houston George Bush Intcntl-TRS Trieste Ronchi dei Legionari

15h 10m1 stop Frankfurt am Main

6:20 am - 1:35 pmTRS Trieste Ronchi dei Legionari-IAH Houston George Bush Intcntl

14h 15m1 stop Frankfurt am Main

$929Lufthansa

Tue, Sep 15 - Tue, Sep 22

Cheap last minute flights

Enter your travel dates to find the best prices.

11:00 pm - 7:00 pmEWR Newark-TRS Trieste Ronchi dei Legionari

14h 00m1 stop Paris Orly

6:00 pm - 9:00 pmTRS Trieste Ronchi dei Legionari-EWR Newark

33h 00m2 stops Milan Linate Paris Beauvais-Tille

$762Multiple Airlines

Mon, Aug 24 - Wed, Sep 2

5:05 pm - 6:30 pmBOS Boston Logan Intl-TRS Trieste Ronchi dei Legionari

19h 25m1 stop Rome Fiumicino

7:15 pm - 1:40 pmTRS Trieste Ronchi dei Legionari-BOS Boston Logan Intl

24h 25m1 stop Rome Fiumicino

$763ITA Airways

Mon, Aug 24 - Mon, Aug 31

3:15 pm - 10:25 amLAX Los Angeles-TRS Trieste Ronchi dei Legionari

34h 10m1 stop Rome Fiumicino

11:15 am - 1:15 pmTRS Trieste Ronchi dei Legionari-LAX Los Angeles

35h 00m1 stop Rome Fiumicino

$765ITA Airways

Fri, Aug 21 - Tue, Aug 25

3:15 pm - 10:25 amLAX Los Angeles-TRS Trieste Ronchi dei Legionari

34h 10m1 stop Rome Fiumicino

7:15 pm - 1:15 pmTRS Trieste Ronchi dei Legionari-LAX Los Angeles

27h 00m1 stop Rome Fiumicino

$792ITA Airways

Fri, Aug 21 - Tue, Aug 25

6:40 pm - 9:55 pmLAX Los Angeles-TRS Trieste Ronchi dei Legionari

18h 15m1 stop Frankfurt am Main

6:20 am - 6:04 pmTRS Trieste Ronchi dei Legionari-LAX Los Angeles

20h 44m2 stops Frankfurt am Main San Francisco

$823Lufthansa

Fri, Aug 21 - Tue, Aug 25

5:30 pm - 9:55 pmLAX Los Angeles-TRS Trieste Ronchi dei Legionari

19h 25m2 stops Munich Franz Josef Strauss Frankfurt am Main

6:20 am - 5:37 pmTRS Trieste Ronchi dei Legionari-LAX Los Angeles

20h 17m2 stops Frankfurt am Main Chicago O'Hare Intl

$841Lufthansa

Fri, Aug 21 - Tue, Aug 25

3:20 pm - 10:15 pmLAX Los Angeles-TRS Trieste Ronchi dei Legionari

21h 55m2 stops Chicago O'Hare Intl Frankfurt am Main

6:10 am - 4:20 pmTRS Trieste Ronchi dei Legionari-LAX Los Angeles

19h 10m1 stop Frankfurt am Main

$844Lufthansa

Sun, Aug 23 - Mon, Aug 31

2:40 pm - 10:15 pmSFO San Francisco-TRS Trieste Ronchi dei Legionari

22h 35m1 stop Frankfurt am Main

6:15 am - 7:49 pmTRS Trieste Ronchi dei Legionari-SFO San Francisco

22h 34m2 stops Frankfurt am Main Vancouver Intl

$873Multiple Airlines

Thu, Aug 20 - Thu, Aug 27

2:40 pm - 10:15 pmSFO San Francisco-TRS Trieste Ronchi dei Legionari

22h 35m1 stop Frankfurt am Main

6:15 am - 12:40 pmTRS Trieste Ronchi dei Legionari-SFO San Francisco

15h 25m1 stop Frankfurt am Main

$873Multiple Airlines

Thu, Aug 20 - Thu, Aug 27

6:20 pm - 9:50 pmJFK New York John F Kennedy Intl-TRS Trieste Ronchi dei Legionari

21h 30m1 stop London Gatwick

6:35 am - 8:05 pmTRS Trieste Ronchi dei Legionari-JFK New York John F Kennedy Intl

19h 30m2 stops Rome Fiumicino Lisbon Humberto Delgado

$887Multiple Airlines

Mon, Aug 24 - Wed, Sep 2

Fly from

Route

Depart

Return

Price

Cheapest round-trip

BostonTrieste

BOS Boston Logan Intl - TRS Trieste Ronchi dei Legionari

BOSTRS

Boston Logan Intl

Wed 10/14

9:15 pm-4:00 pm

1 stop12h 45m

Trieste Ronchi dei Legionari

Tue 10/20

10:15 pm-9:05 pm

2 stops28h 50m

$680

New YorkTrieste

JFK New York John F Kennedy Intl - TRS Trieste Ronchi dei Legionari

JFKTRS

New York John F Kennedy Intl

Tue 9/29

11:50 pm-10:50 am

2 stops29h 00m

Trieste Ronchi dei Legionari

Tue 10/6

1:30 pm-10:00 pm

1 stop14h 30m

$723

New YorkTrieste

JFK New York John F Kennedy Intl - TRS Trieste Ronchi dei Legionari

JFKTRS

New York John F Kennedy Intl

Wed 12/2

4:40 pm-6:30 pm

1 stop19h 50m

Trieste Ronchi dei Legionari

Tue 12/8

3:15 pm-6:55 pm

1 stop33h 40m

$726

New YorkTrieste

JFK New York John F Kennedy Intl - TRS Trieste Ronchi dei Legionari

JFKTRS

New York John F Kennedy Intl

Tue 9/29

11:50 pm-3:00 pm

1 stop33h 10m

Trieste Ronchi dei Legionari

Tue 10/6

1:30 pm-10:00 pm

1 stop14h 30m

$727

New YorkTrieste

JFK New York John F Kennedy Intl - TRS Trieste Ronchi dei Legionari

JFKTRS

New York John F Kennedy Intl

Tue 9/29

11:50 pm-10:50 am

2 stops29h 00m

Trieste Ronchi dei Legionari

Tue 10/6

1:30 pm-10:00 pm

1 stop14h 30m

$728

New YorkTrieste

JFK New York John F Kennedy Intl - TRS Trieste Ronchi dei Legionari

JFKTRS

New York John F Kennedy Intl

Tue 12/1

9:05 pm-6:30 pm

1 stop15h 25m

Trieste Ronchi dei Legionari

Wed 12/9

6:35 am-2:15 pm

1 stop13h 40m

$761

Quickest round-trip

BostonTrieste

BOS Boston Logan Intl - TRS Trieste Ronchi dei Legionari

BOSTRS

Boston Logan Intl

Sun 11/15

5:20 pm-2:30 pm

1 stop15h 10m

Trieste Ronchi dei Legionari

Fri 12/4

6:35 am-1:45 pm

1 stop13h 10m

$765

Los AngelesTrieste

LAX Los Angeles - TRS Trieste Ronchi dei Legionari

LAXTRS

Los Angeles

Wed 10/14

7:00 am-2:00 pm

2 stops22h 00m

Trieste Ronchi dei Legionari

Tue 10/20

6:20 am-1:10 pm

1 stop15h 50m

$871

Los AngelesTrieste

LAX Los Angeles - TRS Trieste Ronchi dei Legionari

LAXTRS

Los Angeles

Wed 10/14

7:00 am-2:00 pm

2 stops22h 00m

Trieste Ronchi dei Legionari

Wed 10/21

6:10 am-1:10 pm

1 stop16h 00m

$871

HoustonTrieste

IAH Houston George Bush Intcntl - TRS Trieste Ronchi dei Legionari

IAHTRS

Houston George Bush Intcntl

Tue 9/15

3:35 pm-1:45 pm

1 stop15h 10m

Trieste Ronchi dei Legionari

Tue 9/22

6:20 am-1:35 pm

1 stop14h 15m

$929

Flights are sorted by cheapest round-trip flights first.

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Trieste flights insights and trends

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Prices

Other information

What is the cheapest month to fly to Trieste?

The cheapest month to fly to Trieste from United States is in February. Flight prices, which tend to average around $551, are often lower during this time because this is during the off-season. If you don’t want to visit Trieste in February, then you should wait until October to fly from United States, when ticket prices are also cheap, with an average price of $627.

Cheapest flights to Trieste Ronchi dei Legionari

Find the cheapest flights to Trieste Ronchi dei Legionari from your nearest city or airport

Find flights from Los Angeles to Venice Marco Polo Airport

Cheap Trieste flight deals and tips

Summary info about Trieste flight prices, duration and airlines

Best One-Way Price	$326
Best Round-Trip Price	$680
Fastest flight time	16h 45m

The best one-way flight price to Trieste from United States in the last 5 days is $326 (Boston Logan Intl to Trieste Ronchi dei Legionari).

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The best round-trip flight price to Trieste from United States in the last 5 days is $680 (Boston Logan Intl to Trieste Ronchi dei Legionari).

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The fastest flight to Trieste from United States takes 16h 45m (Chicago O'Hare Intl to Trieste Ronchi dei Legionari).

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Frequently asked questions about flying to Trieste

Is there an alternative airport near Trieste?

Those flying to Trieste could potentially find better pricing at Trieste Ronchi dei Legionari Airport (18 mi from Trieste city center) or Venice Treviso A. Canova Airport (76 mi from Trieste city center) depending on the month and departure airport.

Is there a cheaper alternative to flying into Trieste?

You can find deals at Venice Treviso A. Canova Airport for $99 on average, but that price can change based on your departure airport. To save money, try momondo’s Airport-to-Airport Pricing Tool.

What is the absolute cheapest flight to Trieste?

In the past two weeks, users have booked deals to Trieste for $24/person, which is 81% cheaper than the average flight to Trieste. To find the cheapest price to Trieste from your area, use momondo’s Airport-to-Airport Pricing Tool.

When did momondo last update prices for flights to Trieste Ronchi dei Legionari Airport?

Prices for flights to Trieste Ronchi dei Legionari Airport are refreshed on a daily basis.

How many operators does momondo search for flights to Trieste Ronchi dei Legionari Airport?

There are 5 operators available for flights to Trieste Ronchi dei Legionari Airport as of August 2026.

How old do you have to be to fly to Trieste Ronchi dei Legionari Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel to Trieste Ronchi dei Legionari Airport.

What documentation or ID do you need to fly to Trieste Ronchi dei Legionari Airport?

The travel and health documents required for your trip to Trieste Ronchi dei Legionari Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Trieste Ronchi dei Legionari Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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Why should I use momondo to find a flight deal to Trieste?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Trieste.

Can I find flights to Trieste with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for flights to Trieste to just show those with flexible booking policies.

How can momondo help me find flights to Trieste?

Once you have performed a search for flights to Trieste, momondo helps you find the right flight by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight to Trieste right now. Can momondo alert me if prices change?

Price alerts on flights to Trieste are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.