What airlines fly to Trieste?

United Airlines, Delta and British Airways are the top three most popular airlines that fly to Trieste from United States according to our data. United Airlines is the first choice among our users, with 29% of people opting to fly with this airline when traveling to Trieste. Keep in mind that there are 22 different airlines that fly to Trieste on a routine basis, so you have a few additional options to choose from.

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 New York to Venice Marco Polo Airport is 8h 15m on average, while flying from Boston to Venice Marco Polo Airport is 10h 20m on average. Venice Marco Polo Airport is the most popular airport in Trieste.

What is the cheapest airline that flies from United States to Trieste Ronchi dei Legionari?

ITA Airways, TAP AIR PORTUGAL, and Lufthansa are the most popular carriers operating from United States to Trieste Ronchi dei Legionari

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

Prices for flights from United States to Trieste Ronchi dei Legionari Airport refresh daily.

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

There are 2 operators available for flights from United States to Trieste Ronchi dei Legionari Airport as of September 2025.

How old do you have to be to fly from United States 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 from United States 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 you'll need for your trip to Trieste Ronchi dei Legionari Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Trieste Ronchi dei Legionari Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$299 Cheap Flights from the United States to Trieste in 2025/26

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Find the cheapest flights from the United States to Trieste

Round-trip

One-way

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Recent round-trip flight deals from the United States to Trieste

5:20 pm - 10:25 amBOS-TRS

11h 05m1 stop

7:15 pm - 1:45 pmTRS-BOS

24h 30m1 stop

$434ITA Airways

Find Deal

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

Find Deal

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

Find Deal

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

Find Deal

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

Find Deal

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

Find Deal

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

Find Deal

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

Find Deal

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

Find Deal

Wed, Dec 31 - Wed, Feb 11

Lufthansa flights from United States to Trieste

Our best Lufthansa deals on United States to Trieste flight tickets

Lufthansa

Nov 6

BOS4:20 pmBoston Logan Intl

15h 45m

1 stop

TRS2:05 pmTrieste Ronchi dei Legionari

Nov 13

TRS6:25 amTrieste Ronchi dei Legionari

13h 00m

1 stop

BOS1:25 pmBoston Logan Intl

$515

Find similar

Lufthansa

Nov 25

BOS4:20 pmBoston Logan Intl

15h 40m

1 stop

TRS2:00 pmTrieste Ronchi dei Legionari

Nov 30

TRS3:00 pmTrieste Ronchi dei Legionari

57h 35m

2 stops

BOS6:35 pmBoston Logan Intl

$601

Find similar

Lufthansa

Nov 25

BOS4:20 pmBoston Logan Intl

15h 40m

1 stop

TRS2:00 pmTrieste Ronchi dei Legionari

Nov 30

TRS3:00 pmTrieste Ronchi dei Legionari

28h 25m

1 stop

BOS1:25 pmBoston Logan Intl

$612

Find similar

TAP AIR PORTUGAL flights from United States to Trieste

Our best TAP AIR PORTUGAL deals on United States to Trieste flight tickets

TAP AIR PORTUGAL

Nov 11

EWR5:40 pmNewark

18h 50m

2 stops

TRS6:30 pmTrieste Ronchi dei Legionari

Nov 18

TRS11:15 amTrieste Ronchi dei Legionari

34h 15m

2 stops

EWR3:30 pmNewark

$589

Find similar

TAP AIR PORTUGAL

Nov 11

BOS6:05 pmBoston Logan Intl

18h 25m

2 stops

TRS6:30 pmTrieste Ronchi dei Legionari

Nov 18

TRS11:15 amTrieste Ronchi dei Legionari

33h 20m

2 stops

BOS2:35 pmBoston Logan Intl

$624

Find similar

TAP AIR PORTUGAL

Feb 12

EWR11:55 pmNewark

32h 35m

2 stops

TRS2:30 pmTrieste Ronchi dei Legionari

Feb 18

TRS3:15 pmTrieste Ronchi dei Legionari

30h 15m

2 stops

EWR3:30 pmNewark

$639

Find similar

Fly from

Fly to

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

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from United States to Trieste

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

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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.

Can stopping save me money on United States to Trieste flights?

You could potentially save up to 35% on your flight if you consider stops on a United States to Trieste flight.

Cheap United States to Trieste flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to Trieste

Direct flights	None

There are no direct flights from United States to Trieste. There are no popular flight routes from United States to Trieste.

Search flight deals

When did momondo last update prices for flights from United States to Trieste Ronchi dei Legionari Airport?
Prices for flights from United States to Trieste Ronchi dei Legionari Airport refresh daily.
How many operators does momondo search for flights from United States to Trieste Ronchi dei Legionari Airport?
There are 2 operators available for flights from United States to Trieste Ronchi dei Legionari Airport as of September 2025.
How old do you have to be to fly from United States 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 from United States 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 you'll need for your trip to Trieste Ronchi dei Legionari Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Trieste Ronchi dei Legionari Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from United States to Trieste

Compare and see reviews for airlines that fly from United States to Trieste with momondo

Airline	Rating	Free Cancellation	Price
ITA Airways	PriceFrom $427	Free Cancellation	Rating 6.7 1,036 reviews		Search ITA Airways flights
Lufthansa	PriceFrom $513	Free Cancellation	Rating 6.8 7,409 reviews		Search Lufthansa flights

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Why should I use momondo to find a flight deal from United States 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 from United States.

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

Yes. momondo enables you to select and highlight flights to Trieste from United States with this policy.

How can momondo help me find flights from United States to Trieste?

momondo provides multiple filters to help you find the best flight to Trieste from United States. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for United States to Trieste flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from the United States to Trieste from $299

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Trieste departing on 10/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from United States to Trieste

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Trieste?

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

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

Can stopping save me money on United States to Trieste flights?

You could potentially save up to 35% on your flight if you consider stops on a United States to Trieste flight.

What is the cheapest airline that flies from United States to Trieste Ronchi dei Legionari?

ITA Airways, TAP AIR PORTUGAL, and Lufthansa are the most popular carriers operating from United States to Trieste Ronchi dei Legionari

What airlines fly to Trieste?

How long does it take to fly to Trieste?

Cheap United States to Trieste flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to Trieste

Direct flights

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

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

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

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

Best airlines flying from United States to Trieste

Compare and see reviews for airlines that fly from United States to Trieste with momondo

Traveling to a place near Trieste?

Why use momondo?

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

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

How can momondo help me find flights from United States to Trieste?

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

An easier way to manage your Trieste trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Italy

Fly your favorite airline to Trieste

Airlines are sorted and displayed according to clicks in the past 7 days on momondo