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.

$499 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.

4:35 pm - 2:05 pm

PHL

TRS

15h 30m

2 stops

6:25 am - 3:51 pm

TRS

PHL

15h 26m

2 stops

$987Multiple Airlines

Wed, Nov 4 - Sat, Nov 14

3:20 pm - 2:05 pm

PHL

TRS

16h 45m

2 stops

6:25 am - 10:56 pm

TRS

PHL

22h 31m

2 stops

$992Multiple Airlines

Thu, Nov 5 - Tue, Nov 17

4:35 pm - 2:05 pm

PHL

TRS

15h 30m

2 stops

6:25 am - 4:05 pm

TRS

PHL

15h 40m

1 stop

$1,004Multiple Airlines

Wed, Nov 4 - Sat, Nov 14

5:40 pm - 2:05 pm

PHL

TRS

14h 25m

1 stop

6:25 am - 4:05 pm

TRS

PHL

15h 40m

1 stop

$1,009Lufthansa

Thu, Nov 5 - Tue, Nov 17

3:20 pm - 2:05 pm

PHL

TRS

16h 45m

2 stops

2:45 pm - 10:56 pm

TRS

PHL

38h 11m

2 stops

$1,012Multiple Airlines

Thu, Nov 5 - Mon, Nov 16

4:35 pm - 2:05 pm

PHL

TRS

15h 30m

2 stops

6:25 am - 3:51 pm

TRS

PHL

15h 26m

2 stops

$1,016Multiple Airlines

Fri, Nov 6 - Tue, Nov 17

3:20 pm - 2:05 pm

PHL

TRS

16h 45m

2 stops

2:45 pm - 4:05 pm

TRS

PHL

31h 20m

1 stop

$1,029Multiple Airlines

Thu, Nov 5 - Mon, Nov 16

4:35 pm - 2:05 pm

PHL

TRS

15h 30m

2 stops

6:25 am - 4:05 pm

TRS

PHL

15h 40m

1 stop

$1,034Multiple Airlines

Fri, Nov 6 - Tue, Nov 17

9:15 am - 2:05 pm

PHL

TRS

22h 50m

2 stops

2:45 pm - 3:51 pm

TRS

PHL

31h 06m

2 stops

$1,042Multiple Airlines

Fri, Nov 6 - Mon, Nov 16

5:40 pm - 2:05 pm

PHL

TRS

14h 25m

1 stop

2:45 pm - 4:05 pm

TRS

PHL

31h 20m

1 stop

$1,048Lufthansa

Thu, Nov 5 - Mon, Nov 16

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Lufthansa flights from Philadelphia to Trieste

Our best Lufthansa deals on Philadelphia to Trieste flight tickets

Lufthansa

Nov 5

PHL5:40 pmPhiladelphia

14h 25m

1 stop

TRS2:05 pmTrieste Ronchi dei Legionari

Nov 16

TRS2:45 pmTrieste Ronchi dei Legionari

31h 20m

1 stop

PHL4:05 pmPhiladelphia

$1,048

Lufthansa

Nov 5

PHL5:40 pmPhiladelphia

14h 25m

1 stop

TRS2:05 pmTrieste Ronchi dei Legionari

Nov 14

TRS6:25 amTrieste Ronchi dei Legionari

15h 40m

1 stop

PHL4:05 pmPhiladelphia

$1,057

Lufthansa

Nov 5

PHL5:40 pmPhiladelphia

14h 25m

1 stop

TRS2:05 pmTrieste Ronchi dei Legionari

Nov 14

TRS6:25 amTrieste Ronchi dei Legionari

22h 31m

2 stops

PHL10:56 pmPhiladelphia

$1,113

United Airlines flights from Philadelphia to Trieste

Our best United Airlines deals on Philadelphia to Trieste flight tickets

United Airlines

Nov 16

PHL11:39 amPhiladelphia

16h 46m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

Nov 23

TRS6:35 amTrieste Ronchi dei Legionari

22h 21m

2 stops

PHL10:56 pmPhiladelphia

$1,110

United Airlines

Aug 30

PHL10:05 amPhiladelphia

42h 20m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

Sep 17

TRS6:35 amTrieste Ronchi dei Legionari

38h 12m

2 stops

PHL2:47 pmPhiladelphia

$1,354

United Airlines

Aug 31

PHL3:05 pmPhiladelphia

37h 20m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

Sep 16

TRS6:35 amTrieste Ronchi dei Legionari

38h 12m

2 stops

PHL2:47 pmPhiladelphia

$1,355

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Wed 11/4

4:35 pm-2:05 pm

2 stops15h 30m

Trieste Ronchi dei Legionari

Sat 11/14

6:25 am-3:51 pm

2 stops15h 26m

$987

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Thu 11/5

3:20 pm-2:05 pm

2 stops16h 45m

Trieste Ronchi dei Legionari

Tue 11/17

6:25 am-10:56 pm

2 stops22h 31m

$992

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Wed 11/4

4:35 pm-2:05 pm

2 stops15h 30m

Trieste Ronchi dei Legionari

Sat 11/14

6:25 am-4:05 pm

1 stop15h 40m

$1,004

Quickest round-trip

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Thu 11/5

5:40 pm-2:05 pm

1 stop14h 25m

Trieste Ronchi dei Legionari

Tue 11/17

6:25 am-4:05 pm

1 stop15h 40m

$1,009

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Thu 11/5

3:20 pm-2:05 pm

2 stops16h 45m

Trieste Ronchi dei Legionari

Mon 11/16

2:45 pm-10:56 pm

2 stops38h 11m

$1,012

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Fri 11/6

4:35 pm-2:05 pm

2 stops15h 30m

Trieste Ronchi dei Legionari

Tue 11/17

6:25 am-3:51 pm

2 stops15h 26m

$1,016

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Thu 11/5

3:20 pm-2:05 pm

2 stops16h 45m

Trieste Ronchi dei Legionari

Mon 11/16

2:45 pm-4:05 pm

1 stop31h 20m

$1,029

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Fri 11/6

4:35 pm-2:05 pm

2 stops15h 30m

Trieste Ronchi dei Legionari

Tue 11/17

6:25 am-4:05 pm

1 stop15h 40m

$1,034

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Fri 11/6

9:15 am-2:05 pm

2 stops22h 50m

Trieste Ronchi dei Legionari

Mon 11/16

2:45 pm-3:51 pm

2 stops31h 06m

$1,042

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Thu 11/5

5:40 pm-2:05 pm

1 stop14h 25m

Trieste Ronchi dei Legionari

Mon 11/16

2:45 pm-4:05 pm

1 stop31h 20m

$1,048

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 is the cheapest airline that flies from Philadelphia to Trieste Ronchi dei Legionari?

Lufthansa and United Airlines are the most popular carriers 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 30% 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	14h 05m
Direct flights	None

The fastest flight from Philadelphia to Trieste takes 14h 05m

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 14h 05m.
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.