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.

$591 Cheap Flights from Philadelphia to Trieste in 2025/26

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5:40 pm - 2:00 pmPHL-TRS

14h 20m1 stop

6:15 am - 5:05 pmTRS-PHL

15h 50m1 stop

$591Lufthansa

Find Deal

Sun, Mar 1 - Tue, Mar 24

5:40 pm - 2:00 pmPHL-TRS

14h 20m1 stop

2:40 pm - 10:56 pmTRS-PHL

37h 16m2 stops

$708Lufthansa

Find Deal

Sun, Mar 1 - Tue, Mar 24

10:32 am - 10:55 pmPHL-TRS

30h 23m2 stops

3:15 pm - 12:51 amTRS-PHL

39h 36m2 stops

$723KLM

Find Deal

Wed, Dec 3 - Sun, Dec 7

3:30 pm - 2:10 pmPHL-TRS

16h 40m2 stops

3:15 pm - 4:05 pmTRS-PHL

30h 50m2 stops

$783Multiple Airlines

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Wed, Jan 14 - Wed, Jan 21

5:40 pm - 10:55 pmPHL-TRS

23h 15m2 stops

6:35 am - 5:05 pmTRS-PHL

15h 30m2 stops

$806Lufthansa

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Sun, Mar 1 - Tue, Mar 24

10:15 am - 10:25 amPHL-TRS

18h 10m2 stops

6:35 am - 10:56 pmTRS-PHL

22h 21m2 stops

$2,047United Airlines

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Sat, Dec 6 - Thu, Dec 11

Lufthansa flights from Philadelphia to Trieste

Our best Lufthansa deals on Philadelphia to Trieste flight tickets

Lufthansa

Mar 1

PHL5:40 pmPhiladelphia

14h 20m

1 stop

TRS2:00 pmTrieste Ronchi dei Legionari

Mar 24

TRS6:15 amTrieste Ronchi dei Legionari

15h 50m

1 stop

PHL5:05 pmPhiladelphia

$591

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Lufthansa

Mar 1

PHL5:40 pmPhiladelphia

14h 20m

1 stop

TRS2:00 pmTrieste Ronchi dei Legionari

Mar 24

TRS2:40 pmTrieste Ronchi dei Legionari

37h 16m

2 stops

PHL10:56 pmPhiladelphia

$708

Find similar

Lufthansa

Mar 1

PHL5:40 pmPhiladelphia

23h 15m

2 stops

TRS10:55 pmTrieste Ronchi dei Legionari

Mar 24

TRS6:35 amTrieste Ronchi dei Legionari

15h 30m

2 stops

PHL5:05 pmPhiladelphia

$806

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sun 3/1

5:40 pm-2:00 pm

1 stop14h 20m

Trieste Ronchi dei Legionari

Tue 3/24

6:15 am-5:05 pm

1 stop15h 50m

$591

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sun 3/1

5:40 pm-2:00 pm

1 stop14h 20m

Trieste Ronchi dei Legionari

Tue 3/24

2:40 pm-10:56 pm

2 stops37h 16m

$708

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Wed 12/3

10:32 am-10:55 pm

2 stops30h 23m

Trieste Ronchi dei Legionari

Sun 12/7

3:15 pm-12:51 am

2 stops39h 36m

$723

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Wed 1/14

3:30 pm-2:10 pm

2 stops16h 40m

Trieste Ronchi dei Legionari

Wed 1/21

3:15 pm-4:05 pm

2 stops30h 50m

$783

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sun 3/1

5:40 pm-10:55 pm

2 stops23h 15m

Trieste Ronchi dei Legionari

Tue 3/24

6:35 am-5:05 pm

2 stops15h 30m

$806

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sat 12/6

10:15 am-10:25 am

2 stops18h 10m

Trieste Ronchi dei Legionari

Thu 12/11

6:35 am-10:56 pm

2 stops22h 21m

$2,047

Flights are sorted by cheapest round-trip flights first.

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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 33% of people opting to fly with this airline when traveling to Trieste. Keep in mind that there are 17 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

Direct flights	None

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

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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 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.

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Cheap flights from Philadelphia to Trieste from $591

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Trieste departing on 3/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

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Filter for what you want

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Price Alerts

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Lufthansa flights from Philadelphia to Trieste

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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?

When to book flights from Philadelphia to Trieste

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

Direct flights

How far is Philadelphia to Trieste Ronchi dei Legionari by plane?

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

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

What documentation or ID do you need to fly to Trieste Ronchi dei Legionari Airport?

Traveling to a place near Trieste?

Why use momondo?

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

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

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

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

An easier way to manage your Trieste trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Italy

Fly your favorite airline to Trieste

Airlines are sorted and displayed according to clicks in the past 7 days on momondo