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.

$618 Cheap Flights from Philadelphia to Trieste in 2025/26

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2:30 pm - 10:55 pmPHL-TRS

26h 25m2 stops

6:35 am - 10:50 pmTRS-PHL

22h 15m2 stops

$618KLM

Find Deal

Wed, Jan 21 - Sun, Jan 25

9:15 am - 1:55 pmPHL-TRS

22h 40m2 stops

6:20 am - 10:53 pmTRS-PHL

22h 33m2 stops

$908Multiple Airlines

Find Deal

Sat, Apr 18 - Sat, Apr 25

9:15 am - 1:55 pmPHL-TRS

22h 40m2 stops

2:40 pm - 4:00 pmTRS-PHL

31h 20m1 stop

$925Multiple Airlines

Find Deal

Sat, Apr 18 - Sat, Apr 25

3:30 pm - 2:30 pmPHL-TRS

17h 00m2 stops

11:15 am - 4:00 pmTRS-PHL

34h 45m2 stops

$933Lufthansa

Find Deal

Sat, Apr 18 - Sat, Apr 25

3:30 pm - 6:30 pmPHL-TRS

21h 00m2 stops

3:15 pm - 4:00 pmTRS-PHL

54h 45m2 stops

$953Lufthansa

Find Deal

Sat, Apr 18 - Fri, Apr 24

4:25 pm - 3:25 pmPHL-TRS

17h 00m2 stops

7:15 pm - 7:00 pmTRS-PHL

29h 45m3 stops

$1,197Multiple Airlines

Find Deal

Sat, Apr 18 - Sat, Apr 25

3:30 pm - 6:30 pmPHL-TRS

21h 00m3 stops

7:15 pm - 7:00 pmTRS-PHL

29h 45m3 stops

$1,269Multiple Airlines

Find Deal

Sat, Apr 18 - Sat, Apr 25

4:25 pm - 10:25 amPHL-TRS

36h 00m2 stops

6:35 am - 9:23 pmTRS-PHL

20h 48m2 stops

$1,523United Airlines

Find Deal

Fri, Apr 17 - Fri, Apr 24

3:30 pm - 1:55 pmPHL-TRS

16h 25m2 stops

6:20 am - 4:00 pmTRS-PHL

15h 40m1 stop

$1,993Lufthansa

Find Deal

Sat, Apr 18 - Fri, Apr 24

11:45 am - 10:25 amPHL-TRS

16h 40m2 stops

6:35 am - 10:53 pmTRS-PHL

22h 18m2 stops

$2,065United Airlines

Find Deal

Fri, Apr 17 - Sat, Apr 25

United Airlines flights from Philadelphia to Trieste

Our best United Airlines deals on Philadelphia to Trieste flight tickets

United Airlines

Apr 17

PHL4:25 pmPhiladelphia

36h 00m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

Apr 24

TRS6:35 amTrieste Ronchi dei Legionari

20h 48m

2 stops

PHL9:23 pmPhiladelphia

$1,523

Find similar

United Airlines

Apr 17

PHL11:45 amPhiladelphia

16h 40m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

Apr 25

TRS6:35 amTrieste Ronchi dei Legionari

22h 18m

2 stops

PHL10:53 pmPhiladelphia

$2,065

Find similar

United Airlines

Dec 26

PHL3:30 pmPhiladelphia

36h 55m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

Jan 3

TRS6:35 amTrieste Ronchi dei Legionari

22h 11m

2 stops

PHL10:46 pmPhiladelphia

$3,850

Find similar

Lufthansa flights from Philadelphia to Trieste

Our best Lufthansa deals on Philadelphia to Trieste flight tickets

Lufthansa

Apr 18

PHL3:30 pmPhiladelphia

17h 00m

2 stops

TRS2:30 pmTrieste Ronchi dei Legionari

Apr 25

TRS11:15 amTrieste Ronchi dei Legionari

34h 45m

2 stops

PHL4:00 pmPhiladelphia

$933

Find similar

Lufthansa

Apr 18

PHL3:30 pmPhiladelphia

21h 00m

2 stops

TRS6:30 pmTrieste Ronchi dei Legionari

Apr 24

TRS3:15 pmTrieste Ronchi dei Legionari

54h 45m

2 stops

PHL4:00 pmPhiladelphia

$953

Find similar

Lufthansa

Apr 18

PHL3:30 pmPhiladelphia

16h 25m

2 stops

TRS1:55 pmTrieste Ronchi dei Legionari

Apr 24

TRS6:20 amTrieste Ronchi dei Legionari

15h 40m

1 stop

PHL4:00 pmPhiladelphia

$1,993

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Wed 1/21

2:30 pm-10:55 pm

2 stops26h 25m

Trieste Ronchi dei Legionari

Sun 1/25

6:35 am-10:50 pm

2 stops22h 15m

$618

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sat 4/18

9:15 am-1:55 pm

2 stops22h 40m

Trieste Ronchi dei Legionari

Sat 4/25

6:20 am-10:53 pm

2 stops22h 33m

$908

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sat 4/18

9:15 am-1:55 pm

2 stops22h 40m

Trieste Ronchi dei Legionari

Sat 4/25

2:40 pm-4:00 pm

1 stop31h 20m

$925

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sat 4/18

3:30 pm-2:30 pm

2 stops17h 00m

Trieste Ronchi dei Legionari

Sat 4/25

11:15 am-4:00 pm

2 stops34h 45m

$933

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sat 4/18

3:30 pm-6:30 pm

2 stops21h 00m

Trieste Ronchi dei Legionari

Fri 4/24

3:15 pm-4:00 pm

2 stops54h 45m

$953

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sat 4/18

4:25 pm-3:25 pm

2 stops17h 00m

Trieste Ronchi dei Legionari

Sat 4/25

7:15 pm-7:00 pm

3 stops29h 45m

$1,197

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sat 4/18

3:30 pm-6:30 pm

3 stops21h 00m

Trieste Ronchi dei Legionari

Sat 4/25

7:15 pm-7:00 pm

3 stops29h 45m

$1,269

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Fri 4/17

4:25 pm-10:25 am

2 stops36h 00m

Trieste Ronchi dei Legionari

Fri 4/24

6:35 am-9:23 pm

2 stops20h 48m

$1,523

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Sat 4/18

3:30 pm-1:55 pm

2 stops16h 25m

Trieste Ronchi dei Legionari

Fri 4/24

6:20 am-4:00 pm

1 stop15h 40m

$1,993

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Fri 4/17

11:45 am-10:25 am

2 stops16h 40m

Trieste Ronchi dei Legionari

Sat 4/25

6:35 am-10:53 pm

2 stops22h 18m

$2,065

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 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 34% 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

Fastest flight time	13h 55m
Direct flights	None

The fastest flight from Philadelphia to Trieste takes 13h 55m

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

Search flight deals

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 16h 25m.
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.

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.

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Cheap flights from Philadelphia to Trieste from $618

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 1/21. 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

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Philadelphia to Trieste

Cheap round-trip flights

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United Airlines flights from Philadelphia to Trieste

Our best United Airlines deals on Philadelphia to Trieste flight tickets

Lufthansa flights from Philadelphia to Trieste

Our best Lufthansa deals on Philadelphia to Trieste flight tickets

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Use the filters below to find and compare flights from Philadelphia to Trieste that are best for you.

See travel insights to Trieste from

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?

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

Fastest flight time

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