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.

$714 Cheap Flights from Philadelphia to Trieste in 2026/27

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.

2:10 pm - 6:30 pmPHL Philadelphia-TRS Trieste Ronchi dei Legionari

22h 20m2 stops Atlanta Hartsfield-Jackson Rome Fiumicino

6:35 am - 11:15 pmTRS Trieste Ronchi dei Legionari-PHL Philadelphia

22h 40m2 stops Rome Fiumicino Detroit Metropolitan Wayne County

$862KLM

Wed, Nov 4 - Sat, Nov 14

8:59 pm - 10:25 amPHL Philadelphia-TRS Trieste Ronchi dei Legionari

31h 26m2 stops Boston Logan Intl Rome Fiumicino

11:15 am - 11:31 amTRS Trieste Ronchi dei Legionari-PHL Philadelphia

30h 16m2 stops Rome Fiumicino Miami

$1,163Multiple Airlines

Tue, Jan 5 - Tue, Feb 16

5:05 pm - 10:25 amPHL Philadelphia-TRS Trieste Ronchi dei Legionari

35h 20m2 stops Toronto Pearson Intl Rome Fiumicino

6:35 am - 10:46 pmTRS Trieste Ronchi dei Legionari-PHL Philadelphia

22h 11m2 stops Rome Fiumicino Toronto Pearson Intl

$1,212United Airlines

Sat, Dec 5 - Sat, Dec 12

10:53 am - 10:25 amPHL Philadelphia-TRS Trieste Ronchi dei Legionari

17h 32m2 stops Chicago O'Hare Intl Rome Fiumicino

6:35 am - 2:44 pmTRS Trieste Ronchi dei Legionari-PHL Philadelphia

38h 09m2 stops Rome Fiumicino Montreal Pierre Elliott Trudeau Intl

$1,443United Airlines

Mon, Dec 7 - Fri, Dec 11

10:53 am - 10:25 amPHL Philadelphia-TRS Trieste Ronchi dei Legionari

17h 32m2 stops Chicago O'Hare Intl Rome Fiumicino

6:35 am - 2:44 pmTRS Trieste Ronchi dei Legionari-PHL Philadelphia

38h 09m2 stops Rome Fiumicino Montreal Pierre Elliott Trudeau Intl

$1,444United Airlines

Mon, Dec 7 - Fri, Dec 11

10:53 am - 10:25 amPHL Philadelphia-TRS Trieste Ronchi dei Legionari

17h 32m2 stops Chicago O'Hare Intl Rome Fiumicino

6:35 am - 2:44 pmTRS Trieste Ronchi dei Legionari-PHL Philadelphia

38h 09m2 stops Rome Fiumicino Montreal Pierre Elliott Trudeau Intl

$1,454United Airlines

Mon, Dec 7 - Fri, Dec 11

5:40 pm - 6:30 pmPHL Philadelphia-TRS Trieste Ronchi dei Legionari

18h 50m3 stops Dublin Madrid Barajas Rome Fiumicino

3:10 pm - 11:54 pmTRS Trieste Ronchi dei Legionari-PHL Philadelphia

38h 44m3 stops Barcelona-El Prat Lisbon Humberto Delgado Miami

$1,505Multiple Airlines

Wed, Nov 4 - Sat, Nov 14

5:40 pm - 6:30 pmPHL Philadelphia-TRS Trieste Ronchi dei Legionari

18h 50m3 stops Dublin Madrid Barajas Rome Fiumicino

6:35 am - 11:54 pmTRS Trieste Ronchi dei Legionari-PHL Philadelphia

23h 19m2 stops Rome Fiumicino Miami

$1,580Multiple Airlines

Wed, Nov 4 - Sat, Nov 14

3:20 pm - 10:55 pmPHL Philadelphia-TRS Trieste Ronchi dei Legionari

25h 35m3 stops Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat Rome Fiumicino

6:35 am - 10:46 pmTRS Trieste Ronchi dei Legionari-PHL Philadelphia

22h 11m2 stops Rome Fiumicino Toronto Pearson Intl

$2,504Multiple Airlines

Tue, Jan 5 - Tue, Feb 16

6:45 pm - 2:30 pmPHL Philadelphia-TRS Trieste Ronchi dei Legionari

13h 45m1 stop Rome Fiumicino

3:15 pm - 2:40 pmTRS Trieste Ronchi dei Legionari-PHL Philadelphia

29h 25m1 stop Rome Fiumicino

$2,947Multiple Airlines

Wed, Nov 4 - Sat, Nov 14

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United Airlines flights from Philadelphia to Trieste

Our best United Airlines deals on Philadelphia to Trieste flight tickets

United Airlines

Dec 5

PHL5:05 pmPhiladelphia

35h 20m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

Dec 12

TRS6:35 amTrieste Ronchi dei Legionari

22h 11m

2 stops

PHL10:46 pmPhiladelphia

$1,212

United Airlines

Dec 7

PHL10:53 amPhiladelphia

17h 32m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

Dec 11

TRS6:35 amTrieste Ronchi dei Legionari

38h 09m

2 stops

PHL2:44 pmPhiladelphia

$1,443

United Airlines

Dec 7

PHL10:53 amPhiladelphia

17h 32m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

Dec 11

TRS6:35 amTrieste Ronchi dei Legionari

38h 09m

2 stops

PHL2:44 pmPhiladelphia

$1,444

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaTrieste

PHL Philadelphia - TRS Trieste Ronchi dei Legionari

PHLTRS

Philadelphia

Wed 11/4

2:10 pm-6:30 pm

2 stops22h 20m

Trieste Ronchi dei Legionari

Sat 11/14

6:35 am-11:15 pm

2 stops22h 40m

$862

PhiladelphiaTrieste

PHL Philadelphia - TRS Trieste Ronchi dei Legionari

PHLTRS

Philadelphia

Tue 1/5

8:59 pm-10:25 am

2 stops31h 26m

Trieste Ronchi dei Legionari

Tue 2/16

11:15 am-11:31 am

2 stops30h 16m

$1,163

PhiladelphiaTrieste

PHL Philadelphia - TRS Trieste Ronchi dei Legionari

PHLTRS

Philadelphia

Sat 12/5

5:05 pm-10:25 am

2 stops35h 20m

Trieste Ronchi dei Legionari

Sat 12/12

6:35 am-10:46 pm

2 stops22h 11m

$1,212

PhiladelphiaTrieste

PHL Philadelphia - TRS Trieste Ronchi dei Legionari

PHLTRS

Philadelphia

Mon 12/7

10:53 am-10:25 am

2 stops17h 32m

Trieste Ronchi dei Legionari

Fri 12/11

6:35 am-2:44 pm

2 stops38h 09m

$1,443

PhiladelphiaTrieste

PHL Philadelphia - TRS Trieste Ronchi dei Legionari

PHLTRS

Philadelphia

Mon 12/7

10:53 am-10:25 am

2 stops17h 32m

Trieste Ronchi dei Legionari

Fri 12/11

6:35 am-2:44 pm

2 stops38h 09m

$1,444

PhiladelphiaTrieste

PHL Philadelphia - TRS Trieste Ronchi dei Legionari

PHLTRS

Philadelphia

Mon 12/7

10:53 am-10:25 am

2 stops17h 32m

Trieste Ronchi dei Legionari

Fri 12/11

6:35 am-2:44 pm

2 stops38h 09m

$1,454

PhiladelphiaTrieste

PHL Philadelphia - TRS Trieste Ronchi dei Legionari

PHLTRS

Philadelphia

Wed 11/4

5:40 pm-6:30 pm

3 stops18h 50m

Trieste Ronchi dei Legionari

Sat 11/14

3:10 pm-11:54 pm

3 stops38h 44m

$1,505

Quickest round-trip

PhiladelphiaTrieste

PHL Philadelphia - TRS Trieste Ronchi dei Legionari

PHLTRS

Philadelphia

Wed 11/4

5:40 pm-6:30 pm

3 stops18h 50m

Trieste Ronchi dei Legionari

Sat 11/14

6:35 am-11:54 pm

2 stops23h 19m

$1,580

PhiladelphiaTrieste

PHL Philadelphia - TRS Trieste Ronchi dei Legionari

PHLTRS

Philadelphia

Tue 1/5

3:20 pm-10:55 pm

3 stops25h 35m

Trieste Ronchi dei Legionari

Tue 2/16

6:35 am-10:46 pm

2 stops22h 11m

$2,504

PhiladelphiaTrieste

PHL Philadelphia - TRS Trieste Ronchi dei Legionari

PHLTRS

Philadelphia

Wed 11/4

6:45 pm-2:30 pm

1 stop13h 45m

Trieste Ronchi dei Legionari

Sat 11/14

3:15 pm-2:40 pm

1 stop29h 25m

$2,947

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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 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 34% 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

Best Price Found	$714
Fastest flight time	17h 32m
Direct flights	None

The best one-way flight to Trieste from Philadelphia in the past 72 hours is $714. The best round-trip flight deal from Philadelphia to Trieste found on momondo in the last 72 hours is $862.

The fastest flight from Philadelphia to Trieste takes 17h 32m

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

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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 17h 32m.
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.

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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.