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.

$408 Cheap Flights from Philadelphia to Trieste in 2026

1 adult

0 bags

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.

5:40 pm - 1:55 pm

PHL

TRS

14h 15m

1 stop

6:15 am - 4:05 pm

TRS

PHL

15h 50m

1 stop

$821Lufthansa

Mon, Aug 10 - Thu, Aug 27

5:40 pm - 1:55 pm

PHL

TRS

14h 15m

1 stop

2:50 pm - 4:05 pm

TRS

PHL

31h 15m

1 stop

$842Lufthansa

Mon, Aug 10 - Mon, Aug 24

5:40 pm - 1:55 pm

PHL

TRS

14h 15m

1 stop

6:15 am - 4:05 pm

TRS

PHL

15h 50m

1 stop

$871Lufthansa

Thu, Aug 13 - Thu, Aug 27

3:25 pm - 10:15 pm

PHL

TRS

24h 50m

2 stops

6:20 am - 4:05 pm

TRS

PHL

15h 45m

1 stop

$875Lufthansa

Sat, Aug 15 - Tue, Aug 25

5:40 pm - 1:55 pm

PHL

TRS

14h 15m

1 stop

2:45 pm - 4:05 pm

TRS

PHL

31h 20m

1 stop

$892Lufthansa

Mon, Aug 10 - Sat, Aug 29

3:25 pm - 10:15 pm

PHL

TRS

24h 50m

2 stops

2:50 pm - 4:05 pm

TRS

PHL

31h 15m

1 stop

$895Lufthansa

Sat, Aug 15 - Mon, Aug 24

5:40 pm - 10:15 pm

PHL

TRS

22h 35m

1 stop

6:15 am - 4:05 pm

TRS

PHL

15h 50m

1 stop

$905Lufthansa

Sun, Aug 9 - Thu, Aug 27

5:40 pm - 10:15 pm

PHL

TRS

22h 35m

1 stop

2:50 pm - 4:05 pm

TRS

PHL

31h 15m

1 stop

$925Lufthansa

Sun, Aug 9 - Mon, Aug 24

5:40 pm - 1:55 pm

PHL

TRS

14h 15m

1 stop

2:45 pm - 4:05 pm

TRS

PHL

31h 20m

1 stop

$942Lufthansa

Thu, Aug 13 - Sat, Aug 29

3:25 pm - 10:15 pm

PHL

TRS

24h 50m

2 stops

2:40 pm - 4:05 pm

TRS

PHL

31h 25m

1 stop

$945Lufthansa

Sat, Aug 15 - Sun, Aug 23

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United Airlines flights from Philadelphia to Trieste

Our best United Airlines deals on Philadelphia to Trieste flight tickets

United Airlines

Aug 9

PHL3:25 pmPhiladelphia

37h 00m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

Aug 28

TRS6:35 amTrieste Ronchi dei Legionari

20h 59m

2 stops

PHL9:34 pmPhiladelphia

$1,035

United Airlines

Aug 10

PHL3:10 pmPhiladelphia

13h 15m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

Aug 28

TRS6:35 amTrieste Ronchi dei Legionari

20h 59m

2 stops

PHL9:34 pmPhiladelphia

$1,036

United Airlines

Aug 15

PHL7:55 pmPhiladelphia

32h 30m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

Aug 28

TRS6:35 amTrieste Ronchi dei Legionari

38h 14m

2 stops

PHL2:49 pmPhiladelphia

$1,047

Lufthansa flights from Philadelphia to Trieste

Our best Lufthansa deals on Philadelphia to Trieste flight tickets

Lufthansa

Aug 10

PHL5:40 pmPhiladelphia

14h 15m

1 stop

TRS1:55 pmTrieste Ronchi dei Legionari

Aug 28

TRS6:10 amTrieste Ronchi dei Legionari

15h 55m

1 stop

PHL4:05 pmPhiladelphia

$821

Lufthansa

Aug 10

PHL5:40 pmPhiladelphia

14h 15m

1 stop

TRS1:55 pmTrieste Ronchi dei Legionari

Aug 24

TRS2:50 pmTrieste Ronchi dei Legionari

31h 15m

1 stop

PHL4:05 pmPhiladelphia

$842

Lufthansa

Aug 13

PHL5:40 pmPhiladelphia

14h 15m

1 stop

TRS1:55 pmTrieste Ronchi dei Legionari

Aug 27

TRS6:15 amTrieste Ronchi dei Legionari

15h 50m

1 stop

PHL4:05 pmPhiladelphia

$871

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Mon 8/10

5:40 pm-1:55 pm

1 stop14h 15m

Trieste Ronchi dei Legionari

Thu 8/27

6:15 am-4:05 pm

1 stop15h 50m

$821

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Mon 8/10

5:40 pm-1:55 pm

1 stop14h 15m

Trieste Ronchi dei Legionari

Mon 8/24

2:50 pm-4:05 pm

1 stop31h 15m

$842

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Thu 8/13

5:40 pm-1:55 pm

1 stop14h 15m

Trieste Ronchi dei Legionari

Thu 8/27

6:15 am-4:05 pm

1 stop15h 50m

$871

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sat 8/15

3:25 pm-10:15 pm

2 stops24h 50m

Trieste Ronchi dei Legionari

Tue 8/25

6:20 am-4:05 pm

1 stop15h 45m

$875

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Mon 8/10

5:40 pm-1:55 pm

1 stop14h 15m

Trieste Ronchi dei Legionari

Sat 8/29

2:45 pm-4:05 pm

1 stop31h 20m

$892

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sat 8/15

3:25 pm-10:15 pm

2 stops24h 50m

Trieste Ronchi dei Legionari

Mon 8/24

2:50 pm-4:05 pm

1 stop31h 15m

$895

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sun 8/9

5:40 pm-10:15 pm

1 stop22h 35m

Trieste Ronchi dei Legionari

Thu 8/27

6:15 am-4:05 pm

1 stop15h 50m

$905

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sun 8/9

5:40 pm-10:15 pm

1 stop22h 35m

Trieste Ronchi dei Legionari

Mon 8/24

2:50 pm-4:05 pm

1 stop31h 15m

$925

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Thu 8/13

5:40 pm-1:55 pm

1 stop14h 15m

Trieste Ronchi dei Legionari

Sat 8/29

2:45 pm-4:05 pm

1 stop31h 20m

$942

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sat 8/15

3:25 pm-10:15 pm

2 stops24h 50m

Trieste Ronchi dei Legionari

Sun 8/23

2:40 pm-4:05 pm

1 stop31h 25m

$945

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 31% 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 20m
Direct flights	None

The fastest flight from Philadelphia to Trieste takes 14h 20m

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 14h 20m.
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 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.