PHL - TRS

$663 Find Cheap Flights from Philadelphia to Trieste - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$663
Typical prices: $599-$1,328
KLM
Fri 11/2Fri 11/9
PHL - TRS • 2 stops
Cheapest one-way
$708
Typical prices: $794-$794
United Airlines
Sun 10/28
PHL - TRS • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Philadelphia and Trieste. You'll need to take a connecting flight to reach the destination.
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Top layover airports
Frankfurt am Main (FRA)
Cheapest • Avg $814 (round-trip)
Rome Fiumicino (FCO)
Shortest trip • 15h 02m (one-way)
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Flight Deals

Cheap Flights from Philadelphia to Trieste (PHL-TRS)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to Trieste

Mon, Nov 2 - Mon, Nov 9
KLM Logo
11:36 am - 2:30 pmPHL  Philadelphia-TRS Trieste Ronchi dei Legionari
20h 54m2 stops Atlanta Hartsfield-Jackson Rome Fiumicino
KLM Logo
3:15 pm - 7:12 pmTRS  Trieste Ronchi dei Legionari-PHL Philadelphia
33h 57m2 stops Rome Fiumicino Boston Logan Intl
$663KLM
Mon, Nov 2 - Mon, Nov 9
Multiple Airlines Logo
8:30 am - 2:30 pmPHL  Philadelphia-TRS Trieste Ronchi dei Legionari
24h 00m3 stops Atlanta Hartsfield-Jackson Miami Rome Fiumicino
Multiple Airlines Logo
6:35 am - 7:21 amTRS  Trieste Ronchi dei Legionari-PHL Philadelphia
30h 46m3 stops Rome Fiumicino Miami Atlanta Hartsfield-Jackson
$974Multiple Airlines
Mon, Nov 2 - Mon, Nov 9
Multiple Airlines Logo
8:30 am - 2:30 pmPHL  Philadelphia-TRS Trieste Ronchi dei Legionari
24h 00m3 stops Atlanta Hartsfield-Jackson Miami Rome Fiumicino
Multiple Airlines Logo
6:35 am - 11:43 pmTRS  Trieste Ronchi dei Legionari-PHL Philadelphia
23h 08m2 stops Rome Fiumicino Miami
$1,031Multiple Airlines
Sat, Oct 31 - Sat, Nov 7
United Airlines Logo
5:05 pm - 10:25 amPHL  Philadelphia-TRS Trieste Ronchi dei Legionari
36h 20m2 stops Toronto Pearson Intl Rome Fiumicino
United Airlines Logo
6:35 am - 5:47 pmTRS  Trieste Ronchi dei Legionari-PHL Philadelphia
17h 12m2 stops Rome Fiumicino Chicago O'Hare Intl
$1,211United Airlines
Mon, Nov 2 - Mon, Nov 9
Multiple Airlines Logo
6:45 pm - 6:30 pmPHL  Philadelphia-TRS Trieste Ronchi dei Legionari
17h 45m1 stop Rome Fiumicino
Multiple Airlines Logo
7:15 pm - 2:40 pmTRS  Trieste Ronchi dei Legionari-PHL Philadelphia
25h 25m1 stop Rome Fiumicino
$1,355Multiple Airlines
Tue, Dec 8 - Fri, Dec 11
United Airlines Logo
9:45 am - 10:25 amPHL  Philadelphia-TRS Trieste Ronchi dei Legionari
18h 40m2 stops Chicago O'Hare Intl Rome Fiumicino
United Airlines Logo
6:35 am - 2:44 pmTRS  Trieste Ronchi dei Legionari-PHL Philadelphia
38h 09m2 stops Rome Fiumicino Montreal Pierre Elliott Trudeau Intl
$1,425United Airlines
Tue, Dec 8 - Fri, Dec 11
United Airlines Logo
9:45 am - 10:25 amPHL  Philadelphia-TRS Trieste Ronchi dei Legionari
18h 40m2 stops Chicago O'Hare Intl Rome Fiumicino
United Airlines Logo
6:35 am - 2:44 pmTRS  Trieste Ronchi dei Legionari-PHL Philadelphia
38h 09m2 stops Rome Fiumicino Montreal Pierre Elliott Trudeau Intl
$1,445United Airlines
Booking Insights

Price, demand and travel trends for Philadelphia to Trieste flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Philadelphia to Trieste with more confidence.

How much is a round-trip flight from Philadelphia to Trieste?

Round-trip flights from Philadelphia to Trieste start at $663. Prices are typical for this route right now, with typical round-trip fares ranging from $599 to $1,328. The lowest price found in the past 5 days was $663 on KLM.

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Key details for Philadelphia to Trieste flights

Cheapest flight

$708
Flight from Philadelphia to Trieste

When to book flights from Philadelphia to Trieste

Are your dates flexible? Find out the best times to travel from Philadelphia to Trieste based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Philadelphia to Trieste flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Philadelphia to Trieste?

    Flights from Philadelphia to Trieste usually depart from Philadelphia (PHL) and arrive at Trieste Ronchi dei Legionari (TRS).

  • What cabin classes can I book on flights from Philadelphia to Trieste?

    Only Economy Class is available on flights from Philadelphia to Trieste.

  • Which airports do connecting flights from Philadelphia to Trieste pass through?

    Connecting flights from Philadelphia to Trieste most commonly pass through:

    • Frankfurt am Main (FRA) - 60% of one-stop connections
    • Rome Fiumicino (FCO) - 40% of one-stop connections
    Together, these airports account for 100% of one-stop bookings on this route.

  • Can I save money by using flexible dates for flights from Philadelphia to Trieste?

    On the Philadelphia to Trieste route, being flexible with your departure day can save you up to 78%. Sunday is the cheapest day at $599 round-trip on average, while Saturday is the most expensive at $2,613: a $2,014 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • How long is a flight from Philadelphia to Trieste?

    A nonstop flight from Philadelphia to Trieste takes 0h 00m, covering 4,271 miles.

  • Do I need a passport to fly from Philadelphia to Trieste?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • Have flight prices from Philadelphia to Trieste changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $663 to $6,578. That means the highest observed fare was about 10x higher than the lowest one.

  • How are flight prices from Philadelphia to Trieste looking right now?

    One-way fares from Philadelphia to Trieste are currently lower than usual. Average one-way flight prices are about $708, which is 11% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Philadelphia to Trieste?

    Flying via Frankfurt am Main (FRA) gives the shortest average 1-stop total travel time at 15h 01m, compared with 15h 02m via Rome Fiumicino (FCO).

  • What is the time difference between Philadelphia and Trieste?

    Trieste is 6 hours ahead of Philadelphia (Central European Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Trieste Ronchi dei Legionari Airport (TRS)?

    Trieste Ronchi dei Legionari Airport (TRS) hosts 5 major car rental companies, with daily rates starting from around $11 for economy cars. Top options include:
    • DRIVALIA
    • NOLEGGIARE
    • SICILY BY CAR
    • Europcar
    • Budget

Your guide to booking Philadelphia to Trieste flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Sunday departure instead of Saturday. On this route, Sunday flights average $599 - about $2,014 less than Saturday (77% savings) based on the last 12 months.

More options for your flight from Philadelphia to Trieste

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