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 20 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 7,409 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 - 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 1,036 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 15m on average, while flying from Miami to Venice Marco Polo is 12h 40m on average. Venice Marco Polo is the most popular airport in Trieste.

$299 Cheap Flights to Trieste in 2025/26

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Find the cheapest flights from the United States to Trieste

Round-trip

One-way

Last minute

Cheap round-trip flights

5:20 pm - 10:25 amBOS-TRS

11h 05m1 stop

7:15 pm - 1:45 pmTRS-BOS

24h 30m1 stop

$434ITA Airways

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Fri, Nov 7 - Tue, Nov 11

9:15 pm - 6:30 pmJFK-TRS

15h 15m1 stop

6:35 am - 2:15 pmTRS-JFK

13h 40m1 stop

$457ITA Airways

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Wed, Nov 12 - Wed, Nov 19

10:05 am - 7:55 pmJFK-TRS

28h 50m3 stops

9:05 pm - 8:58 pmTRS-JFK

29h 53m3 stops

$473Multiple Airlines

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Thu, Oct 30 - Sun, Nov 2

10:10 am - 7:55 pmLGA-TRS

28h 45m2 stops

9:05 pm - 3:38 pmTRS-LGA

24h 33m2 stops

$473Multiple Airlines

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Thu, Oct 30 - Sun, Nov 2

4:20 pm - 2:05 pmBOS-TRS

15h 45m1 stop

6:25 am - 1:25 pmTRS-BOS

13h 00m1 stop

$515Lufthansa

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Thu, Nov 6 - Thu, Nov 13

5:40 pm - 6:30 pmEWR-TRS

18h 50m2 stops

11:15 am - 3:30 pmTRS-EWR

34h 15m2 stops

$589TAP AIR PORTUGAL

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Tue, Nov 11 - Tue, Nov 18

4:20 pm - 2:00 pmBOS-TRS

15h 40m1 stop

3:00 pm - 6:35 pmTRS-BOS

57h 35m2 stops

$601Lufthansa

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Tue, Nov 25 - Sun, Nov 30

6:05 pm - 6:30 pmBOS-TRS

18h 25m2 stops

11:15 am - 2:35 pmTRS-BOS

33h 20m2 stops

$624TAP AIR PORTUGAL

Find Deal

Tue, Nov 11 - Tue, Nov 18

6:00 am - 10:25 amBOS-TRS

22h 25m2 stops

6:35 am - 10:37 pmTRS-BOS

22h 02m2 stops

$688United Airlines

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Fri, Feb 27 - Thu, Mar 5

12:20 pm - 10:25 amDFW-TRS

39h 05m2 stops

6:35 am - 7:55 pmTRS-DFW

44h 20m3 stops

$819United Airlines

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Wed, Dec 31 - Wed, Feb 11

Fly from

Route

Depart

Return

Price

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

Fri 11/7

5:20 pm-10:25 am

1 stop11h 05m

Trieste Ronchi dei Legionari

Tue 11/11

7:15 pm-1:45 pm

1 stop24h 30m

$434

New YorkTrieste

JFK - TRS

JFKTRS

New York John F Kennedy Intl

Wed 11/12

9:15 pm-6:30 pm

1 stop15h 15m

Trieste Ronchi dei Legionari

Wed 11/19

6:35 am-2:15 pm

1 stop13h 40m

$457

New YorkTrieste

JFK - TRS

JFKTRS

New York John F Kennedy Intl

Thu 10/30

10:05 am-7:55 pm

3 stops28h 50m

Trieste Ronchi dei Legionari

Sun 11/2

9:05 pm-8:58 pm

3 stops29h 53m

$473

New YorkTrieste

LGA - TRS

LGATRS

New York LaGuardia

Thu 10/30

10:10 am-7:55 pm

2 stops28h 45m

Trieste Ronchi dei Legionari

Sun 11/2

9:05 pm-3:38 pm

2 stops24h 33m

$473

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

Thu 11/6

4:20 pm-2:05 pm

1 stop15h 45m

Trieste Ronchi dei Legionari

Thu 11/13

6:25 am-1:25 pm

1 stop13h 00m

$515

NewarkTrieste

EWR - TRS

EWRTRS

Newark

Tue 11/11

5:40 pm-6:30 pm

2 stops18h 50m

Trieste Ronchi dei Legionari

Tue 11/18

11:15 am-3:30 pm

2 stops34h 15m

$589

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

Tue 11/25

4:20 pm-2:00 pm

1 stop15h 40m

Trieste Ronchi dei Legionari

Sun 11/30

3:00 pm-6:35 pm

2 stops57h 35m

$601

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

Tue 11/11

6:05 pm-6:30 pm

2 stops18h 25m

Trieste Ronchi dei Legionari

Tue 11/18

11:15 am-2:35 pm

2 stops33h 20m

$624

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

Fri 2/27

6:00 am-10:25 am

2 stops22h 25m

Trieste Ronchi dei Legionari

Thu 3/5

6:35 am-10:37 pm

2 stops22h 02m

$688

DallasTrieste

DFW - TRS

DFWTRS

Dallas/Fort Worth

Wed 12/31

12:20 pm-10:25 am

2 stops39h 05m

Trieste Ronchi dei Legionari

Wed 2/11

6:35 am-7:55 pm

3 stops44h 20m

$819

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 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	$299
Best Round-Trip Price	$434
Fastest flight time	11h 05m
Popular in	December

The best one-way flight price to Trieste from United States in the last 72 hours is $299 (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 72 hours is $434 (Boston Logan Intl to Trieste Ronchi dei Legionari).

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The fastest flight to Trieste from United States takes 11h 05m (Newark to Trieste Ronchi dei Legionari).

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December has the highest demand for flights to Trieste, with a 2% 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 $116 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 $21/person, which is 84% 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 September 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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