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

Prices for flights from Philadelphia Airport to Trieste Ronchi dei Legionari Airport are refreshed on a daily basis.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport 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.

$864 Cheap Flights from Philadelphia to Trieste in 2026

Find the cheapest flights from Philadelphia to Trieste

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:25 pm - 2:00 pm

PHL

TRS

40h 35m

2 stops

3:15 pm - 4:05 pm

TRS

PHL

54h 50m

2 stops

$1,129Multiple Airlines

Tue, Oct 20 - Sun, Nov 1

3:25 pm - 10:15 pm

PHL

TRS

24h 50m

2 stops

2:45 pm - 4:05 pm

TRS

PHL

31h 20m

1 stop

$1,202Lufthansa

Sat, Sep 5 - Sat, Sep 12

3:25 pm - 10:15 pm

PHL

TRS

24h 50m

2 stops

6:15 am - 9:32 pm

TRS

PHL

21h 17m

2 stops

$1,205Lufthansa

Sat, Sep 5 - Sat, Sep 12

5:40 pm - 10:15 pm

PHL

TRS

22h 35m

1 stop

3:15 pm - 4:05 pm

TRS

PHL

54h 50m

2 stops

$1,212Lufthansa

Tue, Oct 20 - Sun, Nov 1

9:55 pm - 2:30 pm

PHL

TRS

10h 35m

1 stop

6:35 am - 3:50 pm

TRS

PHL

14h 15m

1 stop

$1,356Multiple Airlines

Tue, Oct 20 - Sun, Nov 1

6:46 pm - 10:25 am

PHL

TRS

33h 39m

2 stops

6:35 am - 6:51 pm

TRS

PHL

18h 16m

2 stops

$1,435United Airlines

Fri, Nov 20 - Tue, Nov 24

10:05 am - 2:30 pm

PHL

TRS

22h 25m

3 stops

2:45 pm - 6:55 pm

TRS

PHL

34h 10m

2 stops

$1,504Multiple Airlines

Sat, Sep 5 - Sat, Sep 12

1:22 pm - 10:25 am

PHL

TRS

15h 03m

2 stops

6:35 am - 10:56 pm

TRS

PHL

22h 21m

2 stops

$1,509United Airlines

Fri, Nov 20 - Tue, Nov 24

10:05 am - 10:55 pm

PHL

TRS

30h 50m

3 stops

7:15 pm - 6:55 pm

TRS

PHL

29h 40m

3 stops

$1,548Multiple Airlines

Sat, Sep 5 - Sat, Sep 12

4:40 pm - 10:55 pm

PHL

TRS

24h 15m

1 stop

6:35 am - 4:00 pm

TRS

PHL

15h 25m

1 stop

$1,714Multiple Airlines

Sat, Sep 5 - Sat, Sep 12

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United Airlines flights from Philadelphia to Trieste

Our best United Airlines deals on Philadelphia to Trieste flight tickets

United Airlines

Nov 20

PHL6:46 pmPhiladelphia

33h 39m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

Nov 24

TRS6:35 amTrieste Ronchi dei Legionari

18h 16m

2 stops

PHL6:51 pmPhiladelphia

$1,435

United Airlines

Nov 20

PHL1:22 pmPhiladelphia

15h 03m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

Nov 24

TRS6:35 amTrieste Ronchi dei Legionari

22h 21m

2 stops

PHL10:56 pmPhiladelphia

$1,509

United Airlines

Sep 6

PHL1:30 pmPhiladelphia

14h 55m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

Sep 12

TRS6:35 amTrieste Ronchi dei Legionari

20h 57m

2 stops

PHL9:32 pmPhiladelphia

$1,822

Lufthansa flights from Philadelphia to Trieste

Our best Lufthansa deals on Philadelphia to Trieste flight tickets

Lufthansa

Sep 5

PHL3:25 pmPhiladelphia

24h 50m

2 stops

TRS10:15 pmTrieste Ronchi dei Legionari

Sep 12

TRS2:45 pmTrieste Ronchi dei Legionari

31h 20m

1 stop

PHL4:05 pmPhiladelphia

$1,202

Lufthansa

Sep 5

PHL3:25 pmPhiladelphia

24h 50m

2 stops

TRS10:15 pmTrieste Ronchi dei Legionari

Sep 12

TRS6:15 amTrieste Ronchi dei Legionari

21h 17m

2 stops

PHL9:32 pmPhiladelphia

$1,205

Lufthansa

Oct 20

PHL5:40 pmPhiladelphia

22h 35m

1 stop

TRS10:15 pmTrieste Ronchi dei Legionari

Nov 1

TRS3:15 pmTrieste Ronchi dei Legionari

54h 50m

2 stops

PHL4:05 pmPhiladelphia

$1,212

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Tue 10/20

3:25 pm-2:00 pm

2 stops40h 35m

Trieste Ronchi dei Legionari

Sun 11/1

3:15 pm-4:05 pm

2 stops54h 50m

$1,129

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sat 9/5

3:25 pm-10:15 pm

2 stops24h 50m

Trieste Ronchi dei Legionari

Sat 9/12

2:45 pm-4:05 pm

1 stop31h 20m

$1,202

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sat 9/5

3:25 pm-10:15 pm

2 stops24h 50m

Trieste Ronchi dei Legionari

Sat 9/12

6:15 am-9:32 pm

2 stops21h 17m

$1,205

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Tue 10/20

5:40 pm-10:15 pm

1 stop22h 35m

Trieste Ronchi dei Legionari

Sun 11/1

3:15 pm-4:05 pm

2 stops54h 50m

$1,212

Quickest round-trip

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Tue 10/20

9:55 pm-2:30 pm

1 stop10h 35m

Trieste Ronchi dei Legionari

Sun 11/1

6:35 am-3:50 pm

1 stop14h 15m

$1,356

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Fri 11/20

6:46 pm-10:25 am

2 stops33h 39m

Trieste Ronchi dei Legionari

Tue 11/24

6:35 am-6:51 pm

2 stops18h 16m

$1,435

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sat 9/5

10:05 am-2:30 pm

3 stops22h 25m

Trieste Ronchi dei Legionari

Sat 9/12

2:45 pm-6:55 pm

2 stops34h 10m

$1,504

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Fri 11/20

1:22 pm-10:25 am

2 stops15h 03m

Trieste Ronchi dei Legionari

Tue 11/24

6:35 am-10:56 pm

2 stops22h 21m

$1,509

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sat 9/5

10:05 am-10:55 pm

3 stops30h 50m

Trieste Ronchi dei Legionari

Sat 9/12

7:15 pm-6:55 pm

3 stops29h 40m

$1,548

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sat 9/5

4:40 pm-10:55 pm

1 stop24h 15m

Trieste Ronchi dei Legionari

Sat 9/12

6:35 am-4:00 pm

1 stop15h 25m

$1,714

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first

How to get the cheapest flight ticket from Philadelphia 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 Philadelphia to Trieste Ronchi dei Legionari?

United Airlines is the most popular carrier operating from Philadelphia to Trieste Ronchi dei Legionari

What airlines fly to Trieste?

United Airlines, Delta and ITA Airways are the top three most popular airlines that fly to Trieste from Philadelphia according to our data. United Airlines is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Trieste. Keep in mind that there are 18 different airlines that fly to Trieste on a routine basis, so you have a few additional options to choose from.

When to book flights from Philadelphia to Trieste

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to Trieste according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Philadelphia to Trieste (PHL to TRS) flight deals and tips

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

Fastest flight time	15h 03m
Direct flights	None

The fastest flight from Philadelphia to Trieste takes 15h 03m

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

Search flight deals

Frequently asked questions about flying from Philadelphia to Trieste

How far is Philadelphia to Trieste Ronchi dei Legionari by plane?
Philadelphia and Trieste Ronchi dei Legionari are 4281.7 mi apart from one another. A reasonable flight in good conditions will take 15h 03m.
When did momondo last update prices for flights from Philadelphia Airport to Trieste Ronchi dei Legionari Airport?
Prices for flights from Philadelphia Airport to Trieste Ronchi dei Legionari Airport are refreshed on a daily basis.
How old do you have to be to fly from Philadelphia Airport to Trieste Ronchi dei Legionari Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport 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.

Udine

Grado

Why use momondo?

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

It is quick and easy to find Philadelphia to Trieste flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Trieste that suits you.

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

Yes. momondo allows you to filter the results for Philadelphia to Trieste flights to just show those with flexible booking policies.

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

Once you have performed a search for Philadelphia to Trieste flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Philadelphia to Trieste now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Trieste and let you know when they change.