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.

ITA Airways Flights to Trieste

ITA Airways is a popular choice for users traveling to Trieste. It operates 4 flights every week to Trieste, most often flying from Rome Fiumicino. ITA Airways ticket prices will depend on when and where you need to fly from - deals as low as $481 (from Boston Logan Intl) have been found by momondo users. In 1,367 reviews, momondo users have rated ITA Airways at an average score of 6.8/10.

Lufthansa Flights to Trieste

Lufthansa flight deals to Trieste start from $499 - this is the best price found recently on momondo, and was a round-trip journey departing from Boston Logan Intl. Over any normal week, Lufthansa flight prices are typically higher, but vary depending on where you fly from - Rome Fiumicino is the most popular Lufthansa departure point to Trieste so generally has the most availability. Lufthansa is scored a 6.8/10 in 8,247 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 Miami to Venice Marco Polo is 11h 45m on average. Venice Marco Polo is the most popular airport in Trieste.

$296 Cheap Flights to Trieste in 2026/27

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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.

12:15 am - 3:45 pmJFK New York John F Kennedy Intl-TRS Trieste Ronchi dei Legionari

33h 30m2 stops Bogotá El Dorado Barcelona-El Prat

6:35 am - 5:00 amTRS Trieste Ronchi dei Legionari-JFK New York John F Kennedy Intl

28h 25m3 stops Rome Fiumicino Barcelona-El Prat Bogotá El Dorado

$621Multiple Airlines

Tue, Nov 10 - Wed, Nov 18

5:20 pm - 2:30 pmJFK New York John F Kennedy Intl-TRS Trieste Ronchi dei Legionari

15h 10m1 stop Rome Fiumicino

6:35 am - 3:50 pmTRS Trieste Ronchi dei Legionari-JFK New York John F Kennedy Intl

15h 15m1 stop Rome Fiumicino

$680KLM

Wed, Nov 11 - Wed, Nov 18

10:05 pm - 10:25 amJFK New York John F Kennedy Intl-TRS Trieste Ronchi dei Legionari

30h 20m2 stops Madrid Barajas Rome Fiumicino

7:15 pm - 5:50 pmTRS Trieste Ronchi dei Legionari-JFK New York John F Kennedy Intl

28h 35m2 stops Rome Fiumicino Madrid Barajas

$680Multiple Airlines

Sun, Nov 8 - Tue, Nov 17

5:00 pm - 10:15 amJFK New York John F Kennedy Intl-TRS Trieste Ronchi dei Legionari

11h 15m1 stop Dublin

10:15 am - 5:50 pmTRS Trieste Ronchi dei Legionari-JFK New York John F Kennedy Intl

37h 35m2 stops Tirana Rinas Madrid Barajas

$705Multiple Airlines

Sun, Nov 8 - Tue, Nov 17

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

$727ITA Airways

Sun, Dec 27 - Wed, Jan 6

5:20 pm - 10:25 amBOS Boston Logan Intl-TRS Trieste Ronchi dei Legionari

11h 05m1 stop Rome Fiumicino

7:15 pm - 1:45 pmTRS Trieste Ronchi dei Legionari-BOS Boston Logan Intl

24h 30m1 stop Rome Fiumicino

$727ITA Airways

Sun, Dec 27 - Tue, Jan 5

5:20 pm - 10:25 amBOS Boston Logan Intl-TRS Trieste Ronchi dei Legionari

11h 05m1 stop Rome Fiumicino

7:15 pm - 1:45 pmTRS Trieste Ronchi dei Legionari-BOS Boston Logan Intl

24h 30m1 stop Rome Fiumicino

$727ITA Airways

Wed, Dec 30 - Tue, Jan 5

8:40 pm - 6:30 pmBOS Boston Logan Intl-TRS Trieste Ronchi dei Legionari

39h 50m2 stops Munich Franz Josef Strauss Rome Fiumicino

3:15 pm - 6:35 pmTRS Trieste Ronchi dei Legionari-BOS Boston Logan Intl

33h 20m2 stops Rome Fiumicino Munich Franz Josef Strauss

$1,098Lufthansa

Mon, Dec 28 - Tue, Jan 5

8:40 pm - 6:30 pmBOS Boston Logan Intl-TRS Trieste Ronchi dei Legionari

39h 50m2 stops Munich Franz Josef Strauss Rome Fiumicino

11:15 am - 6:35 pmTRS Trieste Ronchi dei Legionari-BOS Boston Logan Intl

37h 20m2 stops Rome Fiumicino Munich Franz Josef Strauss

$1,159Lufthansa

Sun, Dec 27 - Tue, Jan 5

8:40 pm - 6:30 pmBOS Boston Logan Intl-TRS Trieste Ronchi dei Legionari

39h 50m2 stops Munich Franz Josef Strauss Rome Fiumicino

3:15 pm - 6:35 pmTRS Trieste Ronchi dei Legionari-BOS Boston Logan Intl

33h 20m2 stops Rome Fiumicino Munich Franz Josef Strauss

$1,159Lufthansa

Sun, Dec 27 - Wed, Jan 6

Cheap last minute flights

Enter your travel dates to find the best prices.

12:30 am - 11:45 pmJFK New York John F Kennedy Intl-TRS Trieste Ronchi dei Legionari

17h 15m2 stops Rome Fiumicino Palermo Punta Raisi

7:15 pm - 1:55 pmTRS Trieste Ronchi dei Legionari-JFK New York John F Kennedy Intl

24h 40m1 stop Rome Fiumicino

$833Multiple Airlines

Sun, Oct 4 - Mon, Oct 19

10:05 pm - 10:55 pmJFK New York John F Kennedy Intl-TRS Trieste Ronchi dei Legionari

42h 50m2 stops Lisbon Humberto Delgado Rome Fiumicino

7:15 pm - 8:05 pmTRS Trieste Ronchi dei Legionari-JFK New York John F Kennedy Intl

54h 50m2 stops Rome Fiumicino Lisbon Humberto Delgado

$846Multiple Airlines

Mon, Oct 5 - Mon, Oct 19

5:05 pm - 2:30 pmBOS Boston Logan Intl-TRS Trieste Ronchi dei Legionari

15h 25m1 stop Rome Fiumicino

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

24h 25m1 stop Rome Fiumicino

$855ITA Airways

Wed, Sep 30 - Mon, Oct 5

11:55 pm - 11:00 pmJFK New York John F Kennedy Intl-TRS Trieste Ronchi dei Legionari

17h 05m2 stops Dublin London Heathrow

3:45 pm - 8:50 amTRS Trieste Ronchi dei Legionari-JFK New York John F Kennedy Intl

23h 05m2 stops Barcelona-El Prat Casablanca Mohamed V

$857Multiple Airlines

Thu, Oct 1 - Fri, Oct 16

6:20 pm - 11:00 pmJFK New York John F Kennedy Intl-TRS Trieste Ronchi dei Legionari

22h 40m1 stop London Gatwick

6:35 am - 1:15 pmTRS Trieste Ronchi dei Legionari-JFK New York John F Kennedy Intl

12h 40m1 stop Rome Fiumicino

$859Multiple Airlines

Thu, Oct 1 - Fri, Oct 16

9:10 pm - 10:25 amJFK New York John F Kennedy Intl-TRS Trieste Ronchi dei Legionari

31h 15m1 stop Rome Fiumicino

3:30 pm - 6:55 pmTRS Trieste Ronchi dei Legionari-JFK New York John F Kennedy Intl

33h 25m1 stop Rome Fiumicino

$863ITA Airways

Mon, Oct 5 - Mon, Oct 19

5:35 pm - 2:30 pmJFK New York John F Kennedy Intl-TRS Trieste Ronchi dei Legionari

14h 55m1 stop Rome Fiumicino

7:15 pm - 1:55 pmTRS Trieste Ronchi dei Legionari-JFK New York John F Kennedy Intl

24h 40m1 stop Rome Fiumicino

$888ITA Airways

Sun, Oct 4 - Tue, Oct 13

4:40 pm - 1:55 pmMIA Miami-TRS Trieste Ronchi dei Legionari

15h 15m1 stop Frankfurt am Main

6:10 am - 6:52 pmTRS Trieste Ronchi dei Legionari-MIA Miami

42h 42m2 stops Frankfurt am Main Newark

$1,068Lufthansa

Mon, Oct 5 - Fri, Oct 23

10:30 pm - 10:15 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

16h 45m1 stop Frankfurt am Main

2:45 pm - 12:35 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

28h 50m2 stops Frankfurt am Main Munich Franz Josef Strauss

$1,083Lufthansa

Sun, Oct 4 - Sat, Oct 17

9:40 pm - 10:15 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

17h 35m2 stops Munich Franz Josef Strauss Frankfurt am Main

2:45 pm - 12:35 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

28h 50m2 stops Frankfurt am Main Munich Franz Josef Strauss

$1,102Lufthansa

Sun, Oct 4 - Sat, Oct 17

Fly from

Route

Depart

Return

Price

Cheapest round-trip

New YorkTrieste

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

JFKTRS

New York John F Kennedy Intl

Tue 11/10

12:15 am-3:45 pm

2 stops33h 30m

Trieste Ronchi dei Legionari

Wed 11/18

6:35 am-5:00 am

3 stops28h 25m

$621

New YorkTrieste

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

JFKTRS

New York John F Kennedy Intl

Wed 11/11

5:20 pm-2:30 pm

1 stop15h 10m

Trieste Ronchi dei Legionari

Wed 11/18

6:35 am-3:50 pm

1 stop15h 15m

$680

New YorkTrieste

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

JFKTRS

New York John F Kennedy Intl

Sun 11/8

10:05 pm-10:25 am

2 stops30h 20m

Trieste Ronchi dei Legionari

Tue 11/17

7:15 pm-5:50 pm

2 stops28h 35m

$680

New YorkTrieste

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

JFKTRS

New York John F Kennedy Intl

Sun 11/8

5:00 pm-10:15 am

1 stop11h 15m

Trieste Ronchi dei Legionari

Tue 11/17

10:15 am-5:50 pm

2 stops37h 35m

$705

Quickest round-trip

BostonTrieste

BOS Boston Logan Intl - TRS Trieste Ronchi dei Legionari

BOSTRS

Boston Logan Intl

Sun 12/27

5:20 pm-2:30 pm

1 stop15h 10m

Trieste Ronchi dei Legionari

Wed 1/6

6:35 am-1:45 pm

1 stop13h 10m

$727

BostonTrieste

BOS Boston Logan Intl - TRS Trieste Ronchi dei Legionari

BOSTRS

Boston Logan Intl

Sun 12/27

5:20 pm-10:25 am

1 stop11h 05m

Trieste Ronchi dei Legionari

Tue 1/5

7:15 pm-1:45 pm

1 stop24h 30m

$727

BostonTrieste

BOS Boston Logan Intl - TRS Trieste Ronchi dei Legionari

BOSTRS

Boston Logan Intl

Wed 12/30

5:20 pm-10:25 am

1 stop11h 05m

Trieste Ronchi dei Legionari

Tue 1/5

7:15 pm-1:45 pm

1 stop24h 30m

$727

BostonTrieste

BOS Boston Logan Intl - TRS Trieste Ronchi dei Legionari

BOSTRS

Boston Logan Intl

Mon 12/28

8:40 pm-6:30 pm

2 stops39h 50m

Trieste Ronchi dei Legionari

Tue 1/5

3:15 pm-6:35 pm

2 stops33h 20m

$1,098

BostonTrieste

BOS Boston Logan Intl - TRS Trieste Ronchi dei Legionari

BOSTRS

Boston Logan Intl

Sun 12/27

8:40 pm-6:30 pm

2 stops39h 50m

Trieste Ronchi dei Legionari

Tue 1/5

11:15 am-6:35 pm

2 stops37h 20m

$1,159

BostonTrieste

BOS Boston Logan Intl - TRS Trieste Ronchi dei Legionari

BOSTRS

Boston Logan Intl

Sun 12/27

8:40 pm-6:30 pm

2 stops39h 50m

Trieste Ronchi dei Legionari

Wed 1/6

3:15 pm-6:35 pm

2 stops33h 20m

$1,159

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

Trieste flights insights and trends

Explore insights for your Trieste flight to craft the best travel plan

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 March to fly from United States, when ticket prices are also cheap, with an average price of $670.

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	$296
Best Round-Trip Price	$621
Fastest flight time	11h 45m

The best one-way flight price to Trieste from United States in the last 5 days is $296 (Los Angeles 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 $621 (New York John F Kennedy Intl to Trieste Ronchi dei Legionari).

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The fastest flight to Trieste from United States takes 11h 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 $105 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 $25/person, which is 87% 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 September 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.