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Trieste

$336+ Cheap flights from Philadelphia (PHL) to Trieste (TRS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — TRS
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from Philadelphia to Trieste

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Trieste (TRS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,460
(Gurufare)

One-way from

$363
(Kiwi.com)
Provider with most accurate pricing for Philadelphia-Trieste Ronchi dei Legionari flight deals.
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Provider most trusted by Cheapflights users for Philadelphia-Trieste Ronchi dei Legionari flights.
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From Philadelphia to Trieste Ronchi dei Legionari
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One-way flight from Philadelphia to Trieste Ronchi dei Legionari
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Find flight deals from Philadelphia to Trieste

Cheapest flights from Philadelphia to Trieste
Explore the most affordable flight options available from Philadelphia to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/126:15 amPHL - TRS
2 stops22h 10mDelta
Wed 8/206:35 amTRS - PHL
2 stops20h 10mDelta
Deal found 4/30$919
This Gurufare deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/125:35 pmPHL - TRS
1 stop14h 30mLufthansa
Wed 8/202:45 pmTRS - PHL
1 stop31h 15mLufthansa
Deal found 4/30$1,115
This Mytrip deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/226:00 amPHL - TRS
3 stops27h 00mMultiple Airlines
Tue 5/271:00 pmTRS - PHL
3 stops47h 30mMultiple Airlines
Deal found 4/30$1,130
This AranGrant deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/161:24 pmPHL - TRS
2 stops15h 01mITA Airways
Fri 6/276:35 amTRS - PHL
2 stops16h 14mITA Airways
Deal found 4/30$2,297

Cheapflights Fare Finder

Customize your flight search to find flights from Philadelphia to Trieste that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2025.
Use the filters below to find and compare flights from Philadelphia to Trieste that are best for you.

Fly from

Philadelphia

Fly to

Trieste

Route

Depart

Return

Price

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Tue 8/12

6:15 am-10:25 am

2 stops22h 10m

Trieste Ronchi dei Legionari

Wed 8/20

6:35 am-8:45 pm

2 stops20h 10m

$919

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Tue 8/12

5:35 pm-2:05 pm

1 stop14h 30m

Trieste Ronchi dei Legionari

Wed 8/20

2:45 pm-4:00 pm

1 stop31h 15m

$1,115

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Thu 5/22

6:00 am-3:00 pm

3 stops27h 00m

Trieste Ronchi dei Legionari

Tue 5/27

1:00 pm-6:30 am

3 stops47h 30m

$1,130

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Mon 6/16

1:24 pm-10:25 am

2 stops15h 01m

Trieste Ronchi dei Legionari

Fri 6/27

6:35 am-4:49 pm

2 stops16h 14m

$2,297

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Tue 10/7

6:18 pm-10:50 pm

3 stops46h 32m

$336

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Tue 10/7

1:15 pm-10:25 am

2 stops15h 10m

$679

PhiladelphiaTrieste

PHL - TRS

PHLTRS

Philadelphia

Wed 5/28

5:35 pm-2:05 pm

1 stop14h 30m

$1,004

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Compare providers for flights from Philadelphia to Trieste

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Trieste in May.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-Trieste flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Philadelphia-Trieste flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Philadelphia-Trieste flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Trieste flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Trieste flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Philadelphia to Trieste

Have a flexible travel schedule? Discover the best time to fly to Trieste from Philadelphia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

Rainfall in Trieste by month

Plan your trip to Trieste by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Trieste ranges from 2.4 - 4.5 inches per month. November is typically the wettest month, when rainfall can reach 4.5 in. February is typically the driest time to visit Trieste when rainfall is around 2.4 in.

Temperature in Trieste by month

Plan your trip to Trieste by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Trieste, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Trieste

Get insights into the airlines that provide service to Trieste. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Trieste. Reviews last updated May 1, 2025.
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
ITA Airways
6.7
Okay
967 reviews
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Lufthansa
6.7
Okay
7,045 reviews
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Trieste. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Philadelphia to Trieste that include hotel bookings?

    Yes. In addition to deals on Philadelphia to Trieste flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Trieste?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Trieste.

  • Can I find deals for business class flights from Philadelphia to Trieste?

    Yes. Cheapflights offers flight deals from Philadelphia to Trieste by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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