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Cheap flights from Pennsylvania to Trieste from $268

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 10/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Pennsylvania to Trieste

Cheap round-trip flights

Enter your travel dates to find the best prices.
ITA Airways Logo
9:10 pm - 6:30 pm
JFK
-
TRS
15h 20m
1 stop
ITA Airways Logo
11:15 am - 1:15 pm
TRS
-
JFK
32h 00m
1 stop
$713ITA Airways
Mon, Aug 17 - Wed, Aug 26
ITA Airways Logo
9:10 pm - 6:30 pm
JFK
-
TRS
15h 20m
1 stop
ITA Airways Logo
11:15 am - 1:15 pm
TRS
-
JFK
32h 00m
1 stop
$721ITA Airways
Mon, Aug 17 - Wed, Aug 26
Multiple Airlines Logo
11:55 pm - 9:50 pm
JFK
-
TRS
15h 55m
1 stop
Multiple Airlines Logo
7:20 pm - 10:05 pm
TRS
-
JFK
32h 45m
2 stops
$725Multiple Airlines
Mon, Aug 17 - Wed, Aug 26
Multiple Airlines Logo
11:55 pm - 9:50 pm
JFK
-
TRS
15h 55m
1 stop
Multiple Airlines Logo
6:35 am - 8:05 pm
TRS
-
JFK
19h 30m
2 stops
$726Multiple Airlines
Mon, Aug 17 - Wed, Aug 26
ITA Airways Logo
4:30 pm - 10:25 am
IAD
-
TRS
11h 55m
1 stop
ITA Airways Logo
7:15 pm - 2:30 pm
TRS
-
IAD
25h 15m
1 stop
$730ITA Airways
Sun, Aug 9 - Mon, Aug 24
TAP AIR PORTUGAL Logo
11:00 pm - 6:30 pm
EWR
-
TRS
37h 30m
2 stops
TAP AIR PORTUGAL Logo
3:15 pm - 3:30 pm
TRS
-
EWR
30h 15m
2 stops
$792TAP AIR PORTUGAL
Sun, Oct 4 - Tue, Oct 13
TAP AIR PORTUGAL Logo
11:00 pm - 10:55 pm
EWR
-
TRS
17h 55m
2 stops
TAP AIR PORTUGAL Logo
11:15 am - 9:00 pm
TRS
-
EWR
15h 45m
2 stops
$828TAP AIR PORTUGAL
Mon, Aug 17 - Wed, Aug 26
Lufthansa Logo
4:20 pm - 1:45 pm
PHL
-
TRS
39h 25m
2 stops
Lufthansa Logo
2:50 pm - 4:05 pm
TRS
-
PHL
31h 15m
1 stop
$871Lufthansa
Sat, Aug 15 - Mon, Aug 24
Lufthansa Logo
5:40 pm - 1:55 pm
PHL
-
TRS
14h 15m
1 stop
Lufthansa Logo
6:15 am - 4:05 pm
TRS
-
PHL
15h 50m
1 stop
$888Lufthansa
Thu, Aug 13 - Thu, Aug 20
KLM Logo
3:58 pm - 10:55 pm
PHL
-
TRS
24h 57m
2 stops
KLM Logo
6:35 am - 7:30 pm
TRS
-
PHL
18h 55m
2 stops
$911KLM
Thu, Aug 13 - Thu, Aug 20

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ITA Airways flights from Pennsylvania to Trieste

Our best ITA Airways deals on Pennsylvania to Trieste flight tickets
ITA Airways
Aug 17
JFK9:10 pmNew York John F Kennedy Intl
15h 20m
1 stop
TRS6:30 pmTrieste Ronchi dei Legionari
Aug 26
TRS11:15 amTrieste Ronchi dei Legionari
32h 00m
1 stop
JFK1:15 pmNew York John F Kennedy Intl
$713
ITA Airways
Aug 17
JFK9:10 pmNew York John F Kennedy Intl
15h 20m
1 stop
TRS6:30 pmTrieste Ronchi dei Legionari
Aug 26
TRS11:15 amTrieste Ronchi dei Legionari
32h 00m
1 stop
JFK1:15 pmNew York John F Kennedy Intl
$721
ITA Airways
Aug 9
IAD4:30 pmWashington, D.C. Dulles Intl
11h 55m
1 stop
TRS10:25 amTrieste Ronchi dei Legionari
Aug 24
TRS7:15 pmTrieste Ronchi dei Legionari
25h 15m
1 stop
IAD2:30 pmWashington, D.C. Dulles Intl
$730

United Airlines flights from Pennsylvania to Trieste

Our best United Airlines deals on Pennsylvania to Trieste flight tickets
United Airlines
Aug 14
PHL8:20 amPhiladelphia
20h 05m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Aug 21
TRS6:35 amTrieste Ronchi dei Legionari
38h 14m
2 stops
PHL2:49 pmPhiladelphia
$1,124
United Airlines
Aug 13
PHL1:30 pmPhiladelphia
14h 55m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Aug 19
TRS6:35 amTrieste Ronchi dei Legionari
24h 24m
2 stops
PHL12:59 amPhiladelphia
$1,131
United Airlines
Aug 24
LGA11:20 amNew York LaGuardia
17h 05m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Sep 2
TRS6:35 amTrieste Ronchi dei Legionari
19h 05m
2 stops
LGA7:40 pmNew York LaGuardia
$1,235

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 July 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

Cheapest round-trip

New YorkTrieste

JFK - TRS

JFKTRS

New York John F Kennedy Intl

Mon 8/17

9:10 pm-6:30 pm

1 stop15h 20m

Trieste Ronchi dei Legionari

Wed 8/26

11:15 am-1:15 pm

1 stop32h 00m

$713

New YorkTrieste

JFK - TRS

JFKTRS

New York John F Kennedy Intl

Mon 8/17

9:10 pm-6:30 pm

1 stop15h 20m

Trieste Ronchi dei Legionari

Wed 8/26

11:15 am-1:15 pm

1 stop32h 00m

$721

New YorkTrieste

JFK - TRS

JFKTRS

New York John F Kennedy Intl

Mon 8/17

11:55 pm-9:50 pm

1 stop15h 55m

Trieste Ronchi dei Legionari

Wed 8/26

7:20 pm-10:05 pm

2 stops32h 45m

$725

New YorkTrieste

JFK - TRS

JFKTRS

New York John F Kennedy Intl

Mon 8/17

11:55 pm-9:50 pm

1 stop15h 55m

Trieste Ronchi dei Legionari

Wed 8/26

6:35 am-8:05 pm

2 stops19h 30m

$726

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sun 8/9

4:30 pm-10:25 am

1 stop11h 55m

Trieste Ronchi dei Legionari

Mon 8/24

7:15 pm-2:30 pm

1 stop25h 15m

$730

NewarkTrieste

EWR - TRS

EWRTRS

Newark

Sun 10/4

11:00 pm-6:30 pm

2 stops37h 30m

Trieste Ronchi dei Legionari

Tue 10/13

3:15 pm-3:30 pm

2 stops30h 15m

$792

NewarkTrieste

EWR - TRS

EWRTRS

Newark

Mon 8/17

11:00 pm-10:55 pm

2 stops17h 55m

Trieste Ronchi dei Legionari

Wed 8/26

11:15 am-9:00 pm

2 stops15h 45m

$828

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sat 8/15

4:20 pm-1:45 pm

2 stops39h 25m

Trieste Ronchi dei Legionari

Mon 8/24

2:50 pm-4:05 pm

1 stop31h 15m

$871
Quickest round-trip

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Thu 8/13

5:40 pm-1:55 pm

1 stop14h 15m

Trieste Ronchi dei Legionari

Thu 8/20

6:15 am-4:05 pm

1 stop15h 50m

$888

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Thu 8/13

3:58 pm-10:55 pm

2 stops24h 57m

Trieste Ronchi dei Legionari

Thu 8/20

6:35 am-7:30 pm

2 stops18h 55m

$911

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?

United Airlines, TAP AIR PORTUGAL, and Lufthansa 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 36% of people opting to fly with this airline when traveling to Trieste. Keep in mind that there are 7 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

10h 50m

Direct flights

None
The fastest flight from Pennsylvania to Trieste takes 10h 50m
There are no direct flights from Pennsylvania to Trieste. There are no popular flight routes from Pennsylvania to Trieste.
Search flight deals

Frequently asked questions about flying from Pennsylvania to Trieste

  • 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
Finnair
United Airlines
Delta
KLM