Which airlines fly to Trieste?

United Airlines, Delta, British Airways and American Airlines 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 13 flights every week to Trieste, most often flying from Rome Fiumicino. Lufthansa ticket prices will depend on when and where you need to fly from - deals as low as $513 (from Boston Logan Intl) have been found by momondo users. In 7,532 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 $427 - 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 - Milan Linate 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 1,077 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 20m on average, while flying from Miami to Venice Marco Polo is 11h 55m on average. Venice Marco Polo is the most popular airport in Trieste.

$362 Cheap Flights to Trieste in 2025/26

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Find the cheapest flights from the United States to Trieste

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Cheap round-trip flights

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3:40 pm - 2:00 pmBOS-TRS

17h 20m2 stops

6:25 am - 2:10 pmTRS-BOS

12h 45m1 stop

$446Multiple Airlines

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lun., mar. 9 - vie., mar. 20

9:15 pm - 2:30 pmJFK-TRS

11h 15m1 stop

6:35 am - 6:55 pmTRS-JFK

18h 20m1 stop

$467ITA Airways

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lun., dic. 8 - lun., dic. 15

5:25 pm - 2:00 pmBOS-TRS

15h 35m1 stop

6:25 am - 2:10 pmTRS-BOS

12h 45m1 stop

$469Lufthansa

Find Deal

lun., mar. 9 - vie., mar. 20

4:20 pm - 2:05 pmBOS-TRS

15h 45m1 stop

6:15 am - 1:25 pmTRS-BOS

13h 10m1 stop

$520Lufthansa

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vie., nov. 28 - jue., dic. 4

5:05 pm - 2:30 pmBOS-TRS

15h 25m2 stops

6:35 am - 10:33 pmTRS-BOS

21h 58m2 stops

$531KLM

Find Deal

lun., feb. 9 - mié., feb. 25

1:10 pm - 2:30 pmBOS-TRS

19h 20m2 stops

6:35 am - 2:35 pmTRS-BOS

14h 00m1 stop

$532KLM

Find Deal

jue., dic. 4 - dom., dic. 14

5:40 pm - 6:30 pmEWR-TRS

18h 50m2 stops

11:15 am - 3:30 pmTRS-EWR

34h 15m2 stops

$597TAP AIR PORTUGAL

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lun., dic. 8 - lun., dic. 15

12:08 pm - 10:25 amBOS-TRS

16h 17m2 stops

6:35 am - 2:52 pmTRS-BOS

38h 17m2 stops

$631United Airlines

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dom., feb. 8 - mié., feb. 25

12:50 pm - 10:25 amBOS-TRS

15h 35m2 stops

6:35 am - 7:42 pmTRS-BOS

19h 07m2 stops

$632United Airlines

Find Deal

mié., dic. 10 - mié., dic. 17

10:00 pm - 6:30 pmJFK-TRS

14h 30m2 stops

6:35 am - 8:05 pmTRS-JFK

19h 30m2 stops

$741TAP AIR PORTUGAL

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mié., ene. 14 - mar., ene. 20

Fly from

Route

Depart

Return

Price

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

lun. 3/9

3:40 pm-2:00 pm

2 stops17h 20m

Trieste Ronchi dei Legionari

vie. 3/20

6:25 am-2:10 pm

1 stop12h 45m

$446

New YorkTrieste

JFK - TRS

JFKTRS

New York John F Kennedy Intl

lun. 12/8

9:15 pm-2:30 pm

1 stop11h 15m

Trieste Ronchi dei Legionari

lun. 12/15

6:35 am-6:55 pm

1 stop18h 20m

$467

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

lun. 3/9

5:25 pm-2:00 pm

1 stop15h 35m

Trieste Ronchi dei Legionari

vie. 3/20

6:25 am-2:10 pm

1 stop12h 45m

$469

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

vie. 11/28

4:20 pm-2:05 pm

1 stop15h 45m

Trieste Ronchi dei Legionari

jue. 12/4

6:15 am-1:25 pm

1 stop13h 10m

$520

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

lun. 2/9

5:05 pm-2:30 pm

2 stops15h 25m

Trieste Ronchi dei Legionari

mié. 2/25

6:35 am-10:33 pm

2 stops21h 58m

$531

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

jue. 12/4

1:10 pm-2:30 pm

2 stops19h 20m

Trieste Ronchi dei Legionari

dom. 12/14

6:35 am-2:35 pm

1 stop14h 00m

$532

NewarkTrieste

EWR - TRS

EWRTRS

Newark

lun. 12/8

5:40 pm-6:30 pm

2 stops18h 50m

Trieste Ronchi dei Legionari

lun. 12/15

11:15 am-3:30 pm

2 stops34h 15m

$597

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

dom. 2/8

12:08 pm-10:25 am

2 stops16h 17m

Trieste Ronchi dei Legionari

mié. 2/25

6:35 am-2:52 pm

2 stops38h 17m

$631

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

mié. 12/10

12:50 pm-10:25 am

2 stops15h 35m

Trieste Ronchi dei Legionari

mié. 12/17

6:35 am-7:42 pm

2 stops19h 07m

$632

New YorkTrieste

JFK - TRS

JFKTRS

New York John F Kennedy Intl

mié. 1/14

10:00 pm-6:30 pm

2 stops14h 30m

Trieste Ronchi dei Legionari

mar. 1/20

6:35 am-8:05 pm

2 stops19h 30m

$741

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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 March. Flight prices, which tend to average around $660, are often lower during this time because this is during the off-season. If you don’t want to visit Trieste in March, then you should wait until January to fly from United States, when ticket prices are also cheap, with an average price of $677.

What is the cheapest day to depart on your flight to Trieste?

The cheapest day to depart on your flight to Trieste is on a Saturday when prices can be found for as low as $871. This is often the case because there is less demand to fly during this day of the week. Flights from United States to Trieste on a Friday will generally be more expensive and average around $1,279. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Trieste?

Our most recent data shows that the best time of day to fly to Trieste is in the afternoon. Flights from United States to Trieste during this time can be as low as $1,020. Flights to Trieste are more costly in the evening, with an average ticket price of $1,116. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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	$362
Best Round-Trip Price	$446
Fastest flight time	11h 10m
Popular in	December

The best one-way flight price to Trieste from United States in the last 72 hours is $362 (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 72 hours is $446 (Boston Logan Intl to Trieste Ronchi dei Legionari).

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The fastest flight to Trieste from United States takes 11h 10m (Newark to Trieste Ronchi dei Legionari).

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December has the highest demand for flights to Trieste, with a 5% price increase on average.

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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 $107 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 $26/person, which is 77% 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 4 operators available for flights to Trieste Ronchi dei Legionari Airport as of October 2025.

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

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