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Cheap flights from Pennsylvania to Trieste from $261

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 5/4. 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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0 bags

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Find the cheapest flights from Pennsylvania to Trieste

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:30 pm - 10:55 pm
LGA
-
TRS
25h 25m
3 stops
Multiple Airlines Logo
3:15 pm - 8:32 pm
TRS
-
LGA
35h 17m
3 stops
$607Multiple Airlines
Mon, Apr 6 - Mon, Apr 13
Multiple Airlines Logo
3:30 pm - 1:05 pm
LGA
-
TRS
15h 35m
2 stops
Multiple Airlines Logo
7:15 pm - 8:32 pm
TRS
-
LGA
31h 17m
3 stops
$613Multiple Airlines
Mon, Apr 6 - Mon, Apr 13
ITA Airways Logo
5:35 pm - 10:25 am
JFK
-
TRS
10h 50m
1 stop
ITA Airways Logo
6:35 am - 1:20 pm
TRS
-
JFK
12h 45m
1 stop
$643ITA Airways
Fri, May 8 - Tue, May 12
ITA Airways Logo
9:10 pm - 10:55 pm
JFK
-
TRS
19h 45m
1 stop
ITA Airways Logo
7:15 pm - 1:55 pm
TRS
-
JFK
24h 40m
1 stop
$681ITA Airways
Wed, Apr 15 - Sat, Apr 25
Lufthansa Logo
5:40 pm - 1:55 pm
PHL
-
TRS
14h 15m
1 stop
Lufthansa Logo
6:00 am - 4:05 pm
TRS
-
PHL
16h 05m
1 stop
$772Lufthansa
Thu, Aug 13 - Mon, Aug 24
Lufthansa Logo
5:40 pm - 1:55 pm
PHL
-
TRS
14h 15m
1 stop
Lufthansa Logo
6:10 am - 4:05 pm
TRS
-
PHL
15h 55m
1 stop
$777Lufthansa
Thu, Aug 13 - Wed, Aug 26
United Airlines Logo
2:37 pm - 10:25 am
PHL
-
TRS
13h 48m
2 stops
United Airlines Logo
6:35 am - 9:34 pm
TRS
-
PHL
20h 59m
2 stops
$816United Airlines
Sun, Aug 16 - Tue, Aug 25
United Airlines Logo
8:00 pm - 10:25 am
PHL
-
TRS
32h 25m
2 stops
United Airlines Logo
6:35 am - 6:40 pm
TRS
-
PHL
18h 05m
2 stops
$829United Airlines
Sat, Aug 15 - Tue, Aug 25
TAP AIR PORTUGAL Logo
10:50 pm - 10:55 pm
IAD
-
TRS
42h 05m
2 stops
TAP AIR PORTUGAL Logo
6:35 am - 3:10 pm
TRS
-
IAD
38h 35m
2 stops
$955TAP AIR PORTUGAL
Fri, Apr 17 - Wed, Apr 22
TAP AIR PORTUGAL Logo
5:45 pm - 6:30 pm
IAD
-
TRS
18h 45m
2 stops
TAP AIR PORTUGAL Logo
3:15 pm - 3:10 pm
TRS
-
IAD
29h 55m
2 stops
$981TAP AIR PORTUGAL
Thu, Apr 16 - Thu, Apr 23

ITA Airways flights from Pennsylvania to Trieste

Our best ITA Airways deals on Pennsylvania to Trieste flight tickets
ITA Airways
Feb 22
JFK4:45 pmNew York John F Kennedy Intl
19h 45m
1 stop
TRS6:30 pmTrieste Ronchi dei Legionari
Mar 3
TRS11:15 amTrieste Ronchi dei Legionari
33h 00m
1 stop
JFK2:15 pmNew York John F Kennedy Intl
$506
ITA Airways
Feb 22
JFK4:45 pmNew York John F Kennedy Intl
19h 45m
1 stop
TRS6:30 pmTrieste Ronchi dei Legionari
Mar 2
TRS3:15 pmTrieste Ronchi dei Legionari
33h 40m
1 stop
JFK6:55 pmNew York John F Kennedy Intl
$510
ITA Airways
Feb 22
JFK4:45 pmNew York John F Kennedy Intl
22h 25m
2 stops
TRS9:10 pmTrieste Ronchi dei Legionari
Mar 2
TRS3:15 pmTrieste Ronchi dei Legionari
29h 00m
1 stop
JFK2:15 pmNew York John F Kennedy Intl
$522

Icelandair flights from Pennsylvania to Trieste

Our best Icelandair deals on Pennsylvania to Trieste flight tickets
Icelandair
Apr 15
JFK11:10 pmNew York John F Kennedy Intl
37h 20m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Apr 25
TRS11:15 amTrieste Ronchi dei Legionari
16h 50m
2 stops
JFK10:05 pmNew York John F Kennedy Intl
$798
Icelandair
Apr 10
JFK11:10 pmNew York John F Kennedy Intl
37h 20m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Apr 19
TRS11:15 amTrieste Ronchi dei Legionari
16h 50m
2 stops
JFK10:05 pmNew York John F Kennedy Intl
$821
Icelandair
Apr 16
JFK8:30 pmNew York John F Kennedy Intl
16h 00m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Apr 25
TRS11:15 amTrieste Ronchi dei Legionari
38h 05m
2 stops
JFK7:20 pmNew York John F Kennedy Intl
$849

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 February 21, 2026.
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

LGA - TRS

LGATRS

New York LaGuardia

Mon 4/6

3:30 pm-10:55 pm

3 stops25h 25m

Trieste Ronchi dei Legionari

Mon 4/13

3:15 pm-8:32 pm

3 stops35h 17m

$607

New YorkTrieste

LGA - TRS

LGATRS

New York LaGuardia

Mon 4/6

3:30 pm-1:05 pm

2 stops15h 35m

Trieste Ronchi dei Legionari

Mon 4/13

7:15 pm-8:32 pm

3 stops31h 17m

$613

New YorkTrieste

JFK - TRS

JFKTRS

New York John F Kennedy Intl

Fri 5/8

5:35 pm-10:25 am

1 stop10h 50m

Trieste Ronchi dei Legionari

Tue 5/12

6:35 am-1:20 pm

1 stop12h 45m

$643

New YorkTrieste

JFK - TRS

JFKTRS

New York John F Kennedy Intl

Wed 4/15

9:10 pm-10:55 pm

1 stop19h 45m

Trieste Ronchi dei Legionari

Sat 4/25

7:15 pm-1:55 pm

1 stop24h 40m

$681

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Thu 8/13

5:40 pm-1:55 pm

1 stop14h 15m

Trieste Ronchi dei Legionari

Mon 8/24

6:00 am-4:05 pm

1 stop16h 05m

$772

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Thu 8/13

5:40 pm-1:55 pm

1 stop14h 15m

Trieste Ronchi dei Legionari

Wed 8/26

6:10 am-4:05 pm

1 stop15h 55m

$777

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sun 8/16

2:37 pm-10:25 am

2 stops13h 48m

Trieste Ronchi dei Legionari

Tue 8/25

6:35 am-9:34 pm

2 stops20h 59m

$816

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sat 8/15

8:00 pm-10:25 am

2 stops32h 25m

Trieste Ronchi dei Legionari

Tue 8/25

6:35 am-6:40 pm

2 stops18h 05m

$829

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Fri 4/17

10:50 pm-10:55 pm

2 stops42h 05m

Trieste Ronchi dei Legionari

Wed 4/22

6:35 am-3:10 pm

2 stops38h 35m

$955

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Thu 4/16

5:45 pm-6:30 pm

2 stops18h 45m

Trieste Ronchi dei Legionari

Thu 4/23

3:15 pm-3:10 pm

2 stops29h 55m

$981

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Trieste from

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, Lufthansa, and United Airlines are the most popular carriers operating from Pennsylvania to Trieste Ronchi dei Legionari

What airlines fly to Trieste?

British Airways, American Airlines and Iberia are the top three most popular airlines that fly to Trieste from Pennsylvania according to our data. British Airways 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

Fastest flight time

11h 55m

Direct flights

None
The fastest flight from Pennsylvania to Trieste takes 11h 55m
There are no direct flights from Pennsylvania to Trieste. There are no popular flight routes from Pennsylvania to Trieste.
Search flight deals

  • 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.

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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
British Airways
American Airlines
Iberia
United Airlines
Finnair
Delta
KLM
Air Canada
Lufthansa