HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Otopeni Intl

$538+ Cheap flights from Philadelphia (PHL) to Otopeni Intl (OTP)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — OTP
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Philadelphia to Otopeni Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Philadelphia to Otopeni Intl

Cheapest flights from Philadelphia to Otopeni Intl
Explore the most affordable flight options available from Philadelphia to Otopeni Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/204:35 pmPHL - OTP
2 stops42h 50mUnited Airlines
Thu 1/155:50 amOTP - PHL
1 stop17h 15mUnited Airlines
Deal found 12/11$1,164
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/204:35 pmPHL - OTP
2 stops42h 50mUnited Airlines
Wed 1/216:05 amOTP - PHL
2 stops15h 42mUnited Airlines
Deal found 12/11$1,168
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/204:35 pmPHL - OTP
2 stops42h 50mUnited Airlines
Tue 1/205:55 amOTP - PHL
2 stops34h 42mUnited Airlines
Deal found 12/11$1,175
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/204:35 pmPHL - OTP
2 stops42h 50mUnited Airlines
Mon 1/192:50 pmOTP - PHL
2 stops54h 41mUnited Airlines
Deal found 12/11$1,195
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/204:35 pmPHL - OTP
2 stops42h 50mUnited Airlines
Sun 1/185:55 amOTP - PHL
1 stop17h 10mUnited Airlines
Deal found 12/11$1,214
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/204:35 pmPHL - OTP
2 stops42h 50mUnited Airlines
Sat 1/175:55 amOTP - PHL
2 stops40h 54mUnited Airlines
Deal found 12/11$1,221
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/155:30 pmPHL - OTP
1 stop17h 20mMultiple Airlines
Thu 1/227:40 pmOTP - PHL
2 stops45h 57mMultiple Airlines
Deal found 12/11$1,263
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/155:30 pmPHL - OTP
1 stop17h 20mMultiple Airlines
Wed 1/216:15 amOTP - PHL
2 stops41h 34mMultiple Airlines
Deal found 12/11$1,312
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/155:30 pmPHL - OTP
1 stop17h 20mMultiple Airlines
Fri 1/167:10 amOTP - PHL
2 stops24h 51mMultiple Airlines
Deal found 12/11$1,313

Find flight deals from Philadelphia to Otopeni Intl

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Otopeni Intl (OTP). 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$536
(oojo)

Popular in

April

Cheapest in

August

Average price

$895
Provider with most accurate pricing for Philadelphia-Bucharest Otopeni Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Bucharest Otopeni Intl flights.
Search Deals
From Philadelphia to Bucharest Otopeni Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($117 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($49 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to Otopeni Intl 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 December 12, 2025.
Use the filters below to find and compare flights from Philadelphia to Bucharest Otopeni Intl Airport that are best for you.

Fly from

Philadelphia

Fly to

Otopeni Intl

Route

Depart

Return

Price

PhiladelphiaBucharest

PHL - OTP

PHLOTP

Philadelphia

Wed 2/11

6:35 pm-11:30 pm

1 stop21h 55m

Bucharest Otopeni Intl

Sun 2/15

7:35 am-4:15 pm

1 stop15h 40m

$538

PhiladelphiaBucharest

PHL - OTP

PHLOTP

Philadelphia

Thu 3/5

6:35 pm-11:45 pm

1 stop22h 10m

Bucharest Otopeni Intl

Mon 3/16

4:00 pm-8:34 pm

2 stops34h 34m

$539

PhiladelphiaBucharest

PHL - OTP

PHLOTP

Philadelphia

Wed 2/11

3:30 pm-2:00 pm

2 stops15h 30m

Bucharest Otopeni Intl

Sun 2/15

5:55 am-2:47 pm

2 stops15h 52m

$555

PhiladelphiaBucharest

PHL - OTP

PHLOTP

Philadelphia

Wed 2/11

10:30 am-2:00 pm

2 stops20h 30m

Bucharest Otopeni Intl

Sun 2/15

5:55 am-9:38 pm

2 stops22h 43m

$563

PhiladelphiaBucharest

PHL - OTP

PHLOTP

Philadelphia

Thu 3/5

3:30 pm-2:05 pm

2 stops15h 35m

Bucharest Otopeni Intl

Mon 3/16

4:40 pm-5:05 pm

2 stops30h 25m

$571

PhiladelphiaBucharest

PHL - OTP

PHLOTP

Philadelphia

Thu 3/5

8:00 am-11:50 pm

3 stops32h 50m

Bucharest Otopeni Intl

Mon 3/16

2:50 pm-9:15 pm

2 stops36h 25m

$583

PhiladelphiaBucharest

PHL - OTP

PHLOTP

Philadelphia

Mon 6/8

7:55 pm-5:25 pm

1 stop14h 30m

Bucharest Otopeni Intl

Mon 6/22

3:30 pm-1:05 pm

1 stop28h 35m

$676

PhiladelphiaBucharest

PHL - OTP

PHLOTP

Philadelphia

Thu 12/25

5:40 pm-6:35 pm

2 stops17h 55m

$543

PhiladelphiaBucharest

PHL - OTP

PHLOTP

Philadelphia

Thu 12/25

5:40 pm-11:15 pm

3 stops22h 35m

$664

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Compare providers for flights from Philadelphia to Otopeni Intl

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 Otopeni Intl in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy2 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-Bucharest Otopeni Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Philadelphia-Bucharest Otopeni Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Philadelphia-Bucharest Otopeni Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Bucharest Otopeni Intl Airport flights, Cheapflights users trust eDreams the most. eDreams 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-Bucharest Otopeni Intl Airport 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 Otopeni Intl

Have a flexible travel schedule? Discover the best time to fly to Otopeni Intl 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 Bucharest Otopeni Intl Airport

What is the cheapest month to book a flight from Philadelphia to Bucharest Otopeni Intl Airport?

Currently, November is the cheapest month in which you can book a flight from Philadelphia to Bucharest Otopeni Intl Airport (average of $356). Flying from Philadelphia to Bucharest Otopeni Intl Airport in May is currently the most expensive (average of $510). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Otopeni Intl

Get insights into the airlines that provide service to Otopeni Intl. 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 Otopeni Intl. Reviews last updated December 12, 2025.
See what other customers who have flown with United Airlines, Lufthansa, and British Airways from Philadelphia to Bucharest Otopeni Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,095 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,095 reviews
United Airlines
7.4
Good
9,095 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
Lufthansa
6.8
Okay
7,626 reviews
United Airlines
7.4
Good
9,095 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
British Airways
6.7
Okay
7,571 reviews
United Airlines
7.4
Good
9,095 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

Related info for your journey

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

  • What airport do you fly from for flights from Philadelphia to Bucharest Otopeni Intl?

    Philadelphia (PHL), located 7.0 mi from the city center, is the airport you fly out of when you book flights from Philadelphia to Bucharest Otopeni Intl. 3 airlines have flights from Philadelphia to Bucharest Otopeni Intl on a regular basis. Booking flights from Philadelphia to Bucharest Otopeni Intl should not be difficult; the airport handles an average of 0 outbound flights to Bucharest Otopeni Intl per day.

  • How long is the flight from Philadelphia to Bucharest Otopeni Intl Airport?

    There are many flights that can get you from Philadelphia to Bucharest Otopeni Intl Airport in 15h 30m. Fly via British Airways or Air Canada to get the fastest option. Airlines will cover a distance of 4831 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Philadelphia to Bucharest Otopeni Intl Airport round-trip?

    According to our current data, Lufthansa ($539), United Airlines ($571), and British Airways ($678) offers the cheapest pricing from Philadelphia to Bucharest Otopeni Intl Airport. Users have found that Lufthansa is 41% cheaper than the other options available to this destination.

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

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

  • How can I find direct flights from Philadelphia to Otopeni Intl?

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

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

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

  • What is the cheapest month to book a flight from Philadelphia to Bucharest Otopeni Intl Airport?

    Currently, November is the cheapest month in which you can book a flight from Philadelphia to Bucharest Otopeni Intl Airport (average of $356). Flying from Philadelphia to Bucharest Otopeni Intl Airport in May is currently the most expensive (average of $510). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Bucharest Otopeni Intl Airport?

Book flights to Bucharest Otopeni Intl Airport if you plan to visit one of these locations
Otopeni

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Philadelphia to Otopeni Intl

Discover the top 3 airlines that operate flights from Philadelphia to Otopeni Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$539Average$931FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$571Average$741FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$678Average$883FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.