$543 Cheap Flights from Philadelphia (PHL) to Iasi (IAS)

View $543 flight on Thu, Jan 8, 2026Opens in a new window

Popular airlines from Philadelphia Intl. Airport (PHL) to Iasi (IAS)

Cheap Flights from Philadelphia to Iasi (PHL-IAS)

Prices were available within the past 7 days and start at $543 for one-way flights and $575 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Thu, Jan 8 - Wed, Jan 28
PHL
Philadelphia
IAS
Iasi
$575 Roundtrip, found 5 days ago
$575
Roundtrip
found 5 days ago
Select Air Canada flight, departing Thu, Jan 8 from Philadelphia to Iasi, returning Wed, Jan 28, priced at $575 found 5 days ago
Lufthansa
Thu, Jan 8 - Wed, Jan 28
PHL
Philadelphia
IAS
Iasi
$595 Roundtrip, found 5 days ago
$595
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Thu, Jan 8 from Philadelphia to Iasi, returning Wed, Jan 28, priced at $595 found 5 days ago
Air Canada
Thu, Jan 8 - Wed, Jan 28
PHL
Philadelphia
IAS
Iasi
$775 Roundtrip, found 5 days ago
$775
Roundtrip
found 5 days ago
Select Air Canada flight, departing Thu, Jan 8 from Philadelphia to Iasi, returning Wed, Jan 28, priced at $775 found 5 days ago
Austrian Airlines
Thu, Jan 8 - Wed, Jan 28
PHL
Philadelphia
IAS
Iasi
$795 Roundtrip, found 5 days ago
$795
Roundtrip
found 5 days ago
Select Austrian Airlines flight, departing Thu, Jan 8 from Philadelphia to Iasi, returning Wed, Jan 28, priced at $795 found 5 days ago
Austrian Airlines
Thu, Jan 8 - Wed, Jan 28
PHL
Philadelphia
IAS
Iasi
$816 Roundtrip, found 5 days ago
$816
Roundtrip
found 5 days ago
Select Austrian Airlines flight, departing Thu, Jan 8 from Philadelphia to Iasi, returning Wed, Jan 28, priced at $816 found 5 days ago
Air Canada
Thu, Jan 8 - Wed, Jan 28
PHL
Philadelphia
IAS
Iasi
$817 Roundtrip, found 5 days ago
$817
Roundtrip
found 5 days ago
Select Air Canada flight, departing Thu, Jan 8 from Philadelphia to Iasi, returning Wed, Jan 28, priced at $817 found 5 days ago
Air Canada
Wed, Nov 26 - Wed, Dec 3
PHL
Philadelphia
IAS
Iasi
$851 Roundtrip, found 6 days ago
$851
Roundtrip
found 6 days ago
Select Air Canada flight, departing Wed, Nov 26 from Philadelphia to Iasi, returning Wed, Dec 3, priced at $851 found 6 days ago
Austrian Airlines
Thu, Jan 8 - Wed, Jan 28
PHL
Philadelphia
IAS
Iasi
$916 Roundtrip, found 5 days ago
$916
Roundtrip
found 5 days ago
Select Austrian Airlines flight, departing Thu, Jan 8 from Philadelphia to Iasi, returning Wed, Jan 28, priced at $916 found 5 days ago
British Airways
Thu, Jan 8 - Wed, Jan 28
PHL
Philadelphia
IAS
Iasi
$966 Roundtrip, found 5 days ago
$966
Roundtrip
found 5 days ago
Select British Airways flight, departing Thu, Jan 8 from Philadelphia to Iasi, returning Wed, Jan 28, priced at $966 found 5 days ago
British Airways
Thu, Jan 8 - Wed, Jan 28
PHL
Philadelphia
IAS
Iasi
$975 Roundtrip, found 5 days ago
$975
Roundtrip
found 5 days ago
Select British Airways flight, departing Thu, Jan 8 from Philadelphia to Iasi, returning Wed, Jan 28, priced at $975 found 5 days ago
British Airways
Thu, Jan 8 - Wed, Jan 28
PHL
Philadelphia
IAS
Iasi
$976 Roundtrip, found 5 days ago
$976
Roundtrip
found 5 days ago
Select British Airways flight, departing Thu, Jan 8 from Philadelphia to Iasi, returning Wed, Jan 28, priced at $976 found 5 days ago
British Airways
Thu, Jan 8 - Wed, Jan 28
PHL
Philadelphia
IAS
Iasi
$984 Roundtrip, found 5 days ago
$984
Roundtrip
found 5 days ago
Select British Airways flight, departing Thu, Jan 8 from Philadelphia to Iasi, returning Wed, Jan 28, priced at $984 found 5 days ago
British Airways
Wed, Jan 7 - Sun, Jan 25
PHL
Philadelphia
IAS
Iasi
$1,000 Roundtrip, found 3 days ago
$1,000
Roundtrip
found 3 days ago
Select British Airways flight, departing Wed, Jan 7 from Philadelphia to Iasi, returning Sun, Jan 25, priced at $1,000 found 3 days ago
Flights from Philadelphia (PHL) to Iasi (IAS)
Origin airport
Philadelphia Intl.
Destination airport
Iasi
Roundtrip price
$575
Distance
4785 mi

Philadelphia to Iasi Flights

The cheapest times to fly from Philadelphia to Iasi

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Philadelphia to Iasi are during the month of January. You can find some of the cheapest flights from Philadelphia to Iasi with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Philadelphia to Iasi

Sunday is one of the best days to book for cheap flights from Philadelphia to Iasi: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Philadelphia to Iasi

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Philadelphia to Iasi in 2025. You can also book with separate airlines for your outbound and return journeys, from $543 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Philadelphia to Iasi flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Philadelphia to Iasi airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Philadelphia Intl. Airport (PHL) to Iasi Airport (IAS) cost?
Grab a cheap one-way flight from $543 or cheap return flight from $575 from Philadelphia Intl. Airport (PHL) to Iasi Airport (IAS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Philadelphia Intl. Airport (PHL) to Iasi Airport (IAS)?
The cheapest month to fly from PHL to IAS is January, when there's less demand. Off-peak months are generally when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Philadelphia Intl. Airport (PHL) to Iasi Airport (IAS)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll fly you from PHL to IAS. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Philadelphia Intl. Airport (PHL) to Iasi Airport (IAS)?
There are no daily direct flights departing from Philadelphia Intl. Airport (PHL) to Iasi Airport (IAS). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from PHL to IAS?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can change based on a number of factors, such as the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Philadelphia Intl. Airport (PHL) to Iasi Airport (IAS)?
To avoid possible delays on the Philadelphia Intl. Airport (PHL) to Iasi Airport (IAS) route, aim to fly before 3 PM. Later departures have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Philadelphia Intl. Airport (PHL) to Iasi Airport (IAS) last-minute?
Last-minute fares from PHL to IAS are usually more expensive. To secure the lowest prices, start searching for flights well in advance. That being said, if you can play around with your travel dates, it's possible to find a cheap ticket just before your departure.
Is it cheaper to book a PHL to IAS flight and hotel package?
You can save money by securing a PHL to IAS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. After selecting your preferred flights and accommodations, you can add extras such as tours, activities and car rentals.
Can I cancel or change the date of my flight from Philadelphia Intl. Airport (PHL) to Iasi Airport (IAS)?
It's usually possible to cancel or reschedule your PHL to IAS flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.