PHL - TRS

$997 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
$997
Typical prices: $599-$1,328
United Airlines
Sat 12/8Tue 12/11
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.
Insights
Insights
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

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
$997United Airlines
Mon, Sep 21 - Mon, Oct 19
Multiple Airlines Logo
3:25 pm - 4:45 pmPHL  Philadelphia-TRS Trieste Ronchi dei Legionari
19h 20m3 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National Stockholm Arlanda
Multiple Airlines Logo
1:35 pm - 6:55 pmTRS  Trieste Ronchi dei Legionari-PHL Philadelphia
35h 20m2 stops Berlin Brandenburg Dublin
$1,117Multiple Airlines
Mon, Sep 21 - Mon, Oct 19
Lufthansa Logo
5:40 pm - 1:55 pmPHL  Philadelphia-TRS Trieste Ronchi dei Legionari
14h 15m1 stop Frankfurt am Main
Lufthansa Logo
2:50 pm - 4:05 pmTRS  Trieste Ronchi dei Legionari-PHL Philadelphia
31h 15m1 stop Frankfurt am Main
$1,158Lufthansa
Mon, Sep 21 - Mon, Oct 19
Multiple Airlines Logo
4:20 pm - 1:55 pmPHL  Philadelphia-TRS Trieste Ronchi dei Legionari
15h 35m2 stops Toronto Pearson Intl Frankfurt am Main
Multiple Airlines Logo
2:50 pm - 4:05 pmTRS  Trieste Ronchi dei Legionari-PHL Philadelphia
31h 15m1 stop Frankfurt am Main
$1,196Multiple Airlines
Mon, Sep 21 - Mon, Oct 19
Multiple Airlines Logo
4:20 pm - 1:55 pmPHL  Philadelphia-TRS Trieste Ronchi dei Legionari
15h 35m2 stops Toronto Pearson Intl Frankfurt am Main
Multiple Airlines Logo
6:10 am - 10:46 pmTRS  Trieste Ronchi dei Legionari-PHL Philadelphia
22h 36m2 stops Frankfurt am Main Toronto Pearson Intl
$1,218Multiple Airlines
Fri, Sep 18 - Mon, Oct 19
Multiple Airlines Logo
5:40 pm - 1:50 pmPHL  Philadelphia-TRS Trieste Ronchi dei Legionari
14h 10m2 stops Frankfurt am Main Krakow J. Paul II Balice
Multiple Airlines Logo
1:35 pm - 6:55 pmTRS  Trieste Ronchi dei Legionari-PHL Philadelphia
35h 20m2 stops Berlin Brandenburg Dublin
$1,261Multiple Airlines
Mon, Sep 21 - Mon, Oct 19
Multiple Airlines Logo
3:25 pm - 4:45 pmPHL  Philadelphia-TRS Trieste Ronchi dei Legionari
19h 20m3 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National Stockholm Arlanda
Multiple Airlines Logo
2:50 pm - 6:55 pmTRS  Trieste Ronchi dei Legionari-PHL Philadelphia
34h 05m3 stops Frankfurt am Main Berlin Brandenburg Dublin
$1,286Multiple Airlines
Fri, Sep 18 - Mon, Oct 19
Multiple Airlines Logo
3:25 pm - 10:55 pmPHL  Philadelphia-TRS Trieste Ronchi dei Legionari
25h 30m3 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National Rome Fiumicino
Multiple Airlines Logo
1:35 pm - 6:55 pmTRS  Trieste Ronchi dei Legionari-PHL Philadelphia
35h 20m2 stops Berlin Brandenburg Dublin
$1,291Multiple Airlines
Wed, Sep 2 - Wed, Sep 16
Lufthansa Logo
5:40 pm - 2:00 pmPHL  Philadelphia-TRS Trieste Ronchi dei Legionari
14h 20m1 stop Frankfurt am Main
Lufthansa Logo
6:10 am - 4:05 pmTRS  Trieste Ronchi dei Legionari-PHL Philadelphia
15h 55m1 stop Frankfurt am Main
$1,303Lufthansa
Fri, Sep 18 - Fri, Sep 25
Lufthansa Logo
5:40 pm - 9:55 pmPHL  Philadelphia-TRS Trieste Ronchi dei Legionari
22h 15m1 stop Frankfurt am Main
Lufthansa Logo
6:10 am - 4:05 pmTRS  Trieste Ronchi dei Legionari-PHL Philadelphia
15h 55m1 stop Frankfurt am Main
$1,312Lufthansa
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 $997. 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 $997 on United Airlines.

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Key details for Philadelphia to Trieste flights

Cheapest flight

$997
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).

  • 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.

  • What are the earliest and latest flights from Philadelphia to Trieste?

    These are the earliest and latest flight times available from Philadelphia to Trieste:

    • Earliest: departs at 12:00 am and lands at 12:00 am
    • Latest: departs at 12:00 am and lands at 12:00 am.

    The flight takes about 0h 00m.

  • 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 $997 to $5,877. That means the highest observed fare was about 6x higher than the lowest one.

  • 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

  • How much should I expect to pay for a Philadelphia to Trieste flight?

    Round-trip flights from Philadelphia to Trieste range from $599 to $1,328, with an average of $1,328 over the past 12 months. Anything below $599 counts as a good deal.

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.

Everything you need to know for your flight from Philadelphia to Trieste

Information on your arrival and departure airports

Philadelphia (PHL)
Trieste (TRS)