What airlines fly to Trieste?

United Airlines, Lufthansa and Delta 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 21 different airlines that fly to Trieste on a routine basis, so you have a few additional options to choose from.

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

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

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 10m on average, while flying from Boston to Venice Marco Polo Airport is 11h 05m on average. Venice Marco Polo Airport is the most popular airport in Trieste.

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 August 2026.

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.

$257 Cheap Flights from the United States to Trieste in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from the United States to Trieste

Round-trip

One-way

Last minute

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

Enter your travel dates to find the best prices.

4:45 pm - 6:30 pm-

19h 45m

6:35 am - 2:40 pm-

14h 05m

$722ITA Airways

Tue, Nov 24 - Tue, Dec 1

6:20 pm - 11:05 pm-

22h 45m

5:00 pm - 8:05 pm-

33h 05m

$739Multiple Airlines

Sun, Sep 13 - Sun, Sep 20

11:50 pm - 3:00 pm-

33h 10m

5:10 pm - 7:10 pm-

32h 00m

$741Multiple Airlines

Tue, Sep 15 - Tue, Sep 22

11:50 pm - 3:00 pm-

33h 10m

1:30 pm - 10:00 pm-

14h 30m

$751Multiple Airlines

Tue, Sep 15 - Tue, Sep 22

3:15 pm - 6:30 pm-

18h 15m

7:25 pm - 1:15 pm-

26h 50m

$761ITA Airways

Mon, Aug 17 - Mon, Aug 24

4:30 pm - 10:55 pm-

24h 25m

7:25 pm - 2:30 pm-

25h 05m

$780ITA Airways

Sun, Aug 16 - Mon, Aug 24

4:30 pm - 6:30 pm-

20h 00m

6:35 am - 2:30 pm-

13h 55m

$780ITA Airways

Mon, Aug 17 - Tue, Aug 25

4:52 pm - 10:25 pm-

20h 33m

2:50 pm - 12:40 pm-

30h 50m

$844Lufthansa

Mon, Aug 17 - Mon, Aug 24

2:15 pm - 10:25 pm-

23h 10m

2:50 pm - 1:10 pm-

31h 20m

$890Lufthansa

Mon, Aug 31 - Mon, Sep 7

3:20 pm - 10:25 pm-

22h 05m

2:50 pm - 6:04 pm-

36h 14m

$900Lufthansa

Mon, Aug 31 - Mon, Sep 7

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KLM flights from United States to Trieste

Our best KLM deals on United States to Trieste flight tickets

KLM

Sep 14

MIA11:28 amMiami

21h 02m

2 stops

TRS2:30 pmTrieste Ronchi dei Legionari

Feb 1

TRS3:15 pmTrieste Ronchi dei Legionari

35h 39m

2 stops

MIA8:54 pmMiami

$861

KLM

Aug 17

SFO12:25 pmSan Francisco

25h 30m

2 stops

TRS10:55 pmTrieste Ronchi dei Legionari

Aug 24

TRS6:35 amTrieste Ronchi dei Legionari

26h 23m

2 stops

SFO11:58 pmSan Francisco

$889

KLM

Dec 6

BOS1:00 pmBoston Logan Intl

19h 30m

2 stops

TRS2:30 pmTrieste Ronchi dei Legionari

Dec 10

TRS6:35 amTrieste Ronchi dei Legionari

14h 00m

1 stop

BOS2:35 pmBoston Logan Intl

$891

ITA Airways flights from United States to Trieste

Our best ITA Airways deals on United States to Trieste flight tickets

ITA Airways

Nov 24

IAD4:45 pmWashington, D.C. Dulles Intl

19h 45m

1 stop

TRS6:30 pmTrieste Ronchi dei Legionari

Dec 1

TRS6:35 amTrieste Ronchi dei Legionari

14h 05m

1 stop

IAD2:40 pmWashington, D.C. Dulles Intl

$722

ITA Airways

Aug 9

BOS5:05 pmBoston Logan Intl

19h 25m

1 stop

TRS6:30 pmTrieste Ronchi dei Legionari

Aug 25

TRS11:15 amTrieste Ronchi dei Legionari

32h 25m

1 stop

BOS1:40 pmBoston Logan Intl

$743

ITA Airways

Aug 17

SFO3:15 pmSan Francisco

18h 15m

1 stop

TRS6:30 pmTrieste Ronchi dei Legionari

Aug 24

TRS7:25 pmTrieste Ronchi dei Legionari

26h 50m

1 stop

SFO1:15 pmSan Francisco

$761

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Tue 11/24

4:45 pm-6:30 pm

1 stop19h 45m

Trieste Ronchi dei Legionari

Tue 12/1

6:35 am-2:40 pm

1 stop14h 05m

$722

New YorkTrieste

JFK - TRS

JFKTRS

New York John F Kennedy Intl

Sun 9/13

6:20 pm-11:05 pm

2 stops22h 45m

Trieste Ronchi dei Legionari

Sun 9/20

5:00 pm-8:05 pm

2 stops33h 05m

$739

New YorkTrieste

JFK - TRS

JFKTRS

New York John F Kennedy Intl

Tue 9/15

11:50 pm-3:00 pm

1 stop33h 10m

Trieste Ronchi dei Legionari

Tue 9/22

5:10 pm-7:10 pm

2 stops32h 00m

$741

New YorkTrieste

JFK - TRS

JFKTRS

New York John F Kennedy Intl

Tue 9/15

11:50 pm-3:00 pm

1 stop33h 10m

Trieste Ronchi dei Legionari

Tue 9/22

1:30 pm-10:00 pm

1 stop14h 30m

$751

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Mon 8/17

3:15 pm-6:30 pm

1 stop18h 15m

Trieste Ronchi dei Legionari

Mon 8/24

7:25 pm-1:15 pm

1 stop26h 50m

$761

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sun 8/16

4:30 pm-10:55 pm

1 stop24h 25m

Trieste Ronchi dei Legionari

Mon 8/24

7:25 pm-2:30 pm

1 stop25h 05m

$780

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Mon 8/17

4:30 pm-6:30 pm

1 stop20h 00m

Trieste Ronchi dei Legionari

Tue 8/25

6:35 am-2:30 pm

1 stop13h 55m

$780

San FranciscoTrieste

SFO - TRS

SFOTRS

San Francisco

Mon 8/17

4:52 pm-10:25 pm

2 stops20h 33m

Trieste Ronchi dei Legionari

Mon 8/24

2:50 pm-12:40 pm

1 stop30h 50m

$844

Los AngelesTrieste

LAX - TRS

LAXTRS

Los Angeles

Mon 8/31

2:15 pm-10:25 pm

2 stops23h 10m

Trieste Ronchi dei Legionari

Mon 9/7

2:50 pm-1:10 pm

1 stop31h 20m

$890

Los AngelesTrieste

LAX - TRS

LAXTRS

Los Angeles

Mon 8/31

3:20 pm-10:25 pm

2 stops22h 05m

Trieste Ronchi dei Legionari

Mon 9/7

2:50 pm-6:04 pm

2 stops36h 14m

$900

Flights are sorted by cheapest round-trip flights first.

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 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 $658.

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

You could potentially save up to 45% 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

Fastest flight time	11h 20m
Direct flights	None

The fastest flight from United States to Trieste takes 11h 20m

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

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Frequently asked questions about flying from the United States to Trieste

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 August 2026.
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 $481	Free Cancellation	Rating 6.7 1,308 reviews		Search ITA Airways flights
Lufthansa	PriceFrom $517	Free Cancellation	Rating 6.8 8,176 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 $257

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 9/30. 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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