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Cheap flights from Pennsylvania to Trieste from $431

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Pennsylvania to Trieste departing on 12/30. 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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Cheap round-trip flights

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ITA Airways Logo
9:15 pm - 2:30 pmJFK-TRS
11h 15m1 stop
ITA Airways Logo
6:35 am - 2:15 pmTRS-JFK
13h 40m1 stop
$547ITA Airways
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Wed, Feb 4 - Wed, Feb 11
ITA Airways Logo
4:45 pm - 12:20 pmJFK-TRS
13h 35m2 stops
ITA Airways Logo
11:15 am - 6:55 pmTRS-JFK
13h 40m1 stop
$569ITA Airways
Find Deal
Wed, Feb 4 - Wed, Feb 11
Lufthansa Logo
3:55 pm - 2:05 pmJFK-TRS
16h 10m1 stop
Lufthansa Logo
6:15 am - 1:35 pmTRS-JFK
13h 20m1 stop
$591Lufthansa
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Sat, Feb 7 - Tue, Feb 24
Lufthansa Logo
6:05 pm - 2:05 pmEWR-TRS
14h 00m1 stop
Lufthansa Logo
6:15 am - 4:00 pmTRS-EWR
15h 45m1 stop
$591Lufthansa
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Sat, Feb 7 - Tue, Feb 24
TAP AIR PORTUGAL Logo
10:00 pm - 6:30 pmJFK-TRS
38h 30m2 stops
TAP AIR PORTUGAL Logo
11:15 am - 8:05 pmTRS-JFK
38h 50m2 stops
$636TAP AIR PORTUGAL
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Sun, Feb 8 - Tue, Feb 24
TAP AIR PORTUGAL Logo
11:55 pm - 6:30 pmEWR-TRS
36h 35m2 stops
TAP AIR PORTUGAL Logo
11:15 am - 3:30 pmTRS-EWR
34h 15m2 stops
$636TAP AIR PORTUGAL
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Sun, Feb 8 - Mon, Feb 23
KLM Logo
10:32 am - 10:55 pmPHL-TRS
30h 23m2 stops
KLM Logo
6:35 am - 7:39 pmTRS-PHL
19h 04m2 stops
$723KLM
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Fri, Dec 5 - Tue, Dec 9
Multiple Airlines Logo
12:59 pm - 2:05 pmPIT-TRS
19h 06m2 stops
Multiple Airlines Logo
6:25 am - 6:49 pmTRS-PIT
18h 24m2 stops
$740Multiple Airlines
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Wed, Nov 19 - Fri, Nov 28
Multiple Airlines Logo
4:50 pm - 11:30 pmJFK-TRS
24h 40m2 stops
Multiple Airlines Logo
6:35 am - 10:30 pmTRS-JFK
21h 55m1 stop
$757Multiple Airlines
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Thu, Apr 2 - Wed, Apr 22
KLM Logo
6:28 am - 10:55 pmABE-TRS
34h 27m2 stops
KLM Logo
6:35 am - 10:50 pmTRS-ABE
22h 15m2 stops
$966KLM
Find Deal
Fri, Jan 16 - Tue, Jan 20

ITA Airways flights from Pennsylvania to Trieste

Our best ITA Airways deals on Pennsylvania to Trieste flight tickets
ITA Airways
Nov 10
JFK4:45 pmNew York John F Kennedy Intl
24h 10m
1 stop
TRS10:55 pmTrieste Ronchi dei Legionari
Nov 19
TRS11:15 amTrieste Ronchi dei Legionari
33h 00m
1 stop
JFK2:15 pmNew York John F Kennedy Intl
$498
Find similar
ITA Airways
Nov 10
JFK4:45 pmNew York John F Kennedy Intl
22h 25m
2 stops
TRS9:10 pmTrieste Ronchi dei Legionari
Nov 19
TRS7:15 pmTrieste Ronchi dei Legionari
29h 40m
1 stop
JFK6:55 pmNew York John F Kennedy Intl
$514
Find similar
ITA Airways
Nov 10
JFK4:45 pmNew York John F Kennedy Intl
13h 35m
2 stops
TRS12:20 pmTrieste Ronchi dei Legionari
Nov 19
TRS1:05 pmTrieste Ronchi dei Legionari
31h 10m
2 stops
JFK2:15 pmNew York John F Kennedy Intl
$529
Find similar

United Airlines flights from Pennsylvania to Trieste

Our best United Airlines deals on Pennsylvania to Trieste flight tickets
United Airlines
Feb 8
EWR5:15 pmNewark
11h 10m
1 stop
TRS10:25 amTrieste Ronchi dei Legionari
Feb 24
TRS6:35 amTrieste Ronchi dei Legionari
14h 05m
1 stop
EWR2:40 pmNewark
$747
Find similar
United Airlines
Feb 4
EWR5:15 pmNewark
11h 10m
1 stop
TRS10:25 amTrieste Ronchi dei Legionari
Feb 11
TRS6:35 amTrieste Ronchi dei Legionari
14h 05m
1 stop
EWR2:40 pmNewark
$847
Find similar
United Airlines
Feb 15
EWR5:15 pmNewark
11h 10m
1 stop
TRS10:25 amTrieste Ronchi dei Legionari
Feb 24
TRS6:35 amTrieste Ronchi dei Legionari
14h 05m
1 stop
EWR2:40 pmNewark
$972
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Pennsylvania to Trieste that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 4, 2025.
Use the filters below to find and compare flights from Pennsylvania to Trieste that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

New YorkTrieste

JFK - TRS

JFKTRS

New York John F Kennedy Intl

Wed 2/4

9:15 pm-2:30 pm

1 stop11h 15m

Trieste Ronchi dei Legionari

Wed 2/11

6:35 am-2:15 pm

1 stop13h 40m

$547

New YorkTrieste

JFK - TRS

JFKTRS

New York John F Kennedy Intl

Wed 2/4

4:45 pm-12:20 pm

2 stops13h 35m

Trieste Ronchi dei Legionari

Wed 2/11

11:15 am-6:55 pm

1 stop13h 40m

$569

New YorkTrieste

JFK - TRS

JFKTRS

New York John F Kennedy Intl

Sat 2/7

3:55 pm-2:05 pm

1 stop16h 10m

Trieste Ronchi dei Legionari

Tue 2/24

6:15 am-1:35 pm

1 stop13h 20m

$591

NewarkTrieste

EWR - TRS

EWRTRS

Newark

Sat 2/7

6:05 pm-2:05 pm

1 stop14h 00m

Trieste Ronchi dei Legionari

Tue 2/24

6:15 am-4:00 pm

1 stop15h 45m

$591

New YorkTrieste

JFK - TRS

JFKTRS

New York John F Kennedy Intl

Sun 2/8

10:00 pm-6:30 pm

2 stops38h 30m

Trieste Ronchi dei Legionari

Tue 2/24

11:15 am-8:05 pm

2 stops38h 50m

$636

NewarkTrieste

EWR - TRS

EWRTRS

Newark

Sun 2/8

11:55 pm-6:30 pm

2 stops36h 35m

Trieste Ronchi dei Legionari

Mon 2/23

11:15 am-3:30 pm

2 stops34h 15m

$636

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Fri 12/5

10:32 am-10:55 pm

2 stops30h 23m

Trieste Ronchi dei Legionari

Tue 12/9

6:35 am-7:39 pm

2 stops19h 04m

$723

PittsburghTrieste

PIT - TRS

PITTRS

Pittsburgh

Wed 11/19

12:59 pm-2:05 pm

2 stops19h 06m

Trieste Ronchi dei Legionari

Fri 11/28

6:25 am-6:49 pm

2 stops18h 24m

$740

New YorkTrieste

JFK - TRS

JFKTRS

New York John F Kennedy Intl

Thu 4/2

4:50 pm-11:30 pm

2 stops24h 40m

Trieste Ronchi dei Legionari

Wed 4/22

6:35 am-10:30 pm

1 stop21h 55m

$757

AllentownTrieste

ABE - TRS

ABETRS

Allentown-Bethlehem

Fri 1/16

6:28 am-10:55 pm

2 stops34h 27m

Trieste Ronchi dei Legionari

Tue 1/20

6:35 am-10:50 pm

2 stops22h 15m

$966

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Pennsylvania 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 airline that flies from Pennsylvania to Trieste Ronchi dei Legionari?

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

What airlines fly to Trieste?

American Airlines, Iberia and British Airways are the top three most popular airlines that fly to Trieste from Pennsylvania according to our data. American Airlines is the first choice among our users, with 30% of people opting to fly with this airline when traveling to Trieste. Keep in mind that there are 9 different airlines that fly to Trieste on a routine basis, so you have a few additional options to choose from.

Cheap Pennsylvania to Trieste flight deals and tips

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

Direct flights

None
There are no direct flights from Pennsylvania to Trieste. There are no popular flight routes from Pennsylvania to Trieste.
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  • When did momondo last update prices for flights from Pennsylvania to Trieste Ronchi dei Legionari Airport?

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

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

  • How old do you have to be to fly from Pennsylvania 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 Pennsylvania 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.

Traveling to a place near Trieste?

Book flights to Trieste if you plan to visit one of these locations
Udine
Grado

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Pennsylvania to Trieste for you.

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

Yes. All flights to Trieste from Pennsylvania on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Pennsylvania to Trieste?

Once all potential Pennsylvania to Trieste flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Trieste, momondo offers a useful price alert feature which will track prices for flights to Trieste from Pennsylvania and alert you when they change.

An easier way to manage your Trieste trip

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Fly your favorite airline to Trieste

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Delta
American Airlines
United Airlines
Turkish Airlines
Lufthansa
Frontier
British Airways
Qatar Airways
Spirit Airlines
Ryanair
Alaska Airlines
Emirates