HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Philadelphia

$400+ Cheap flights from Otopeni Intl (OTP) to Philadelphia (PHL)

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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
OTP — PHL
Mar 16 — Mar 231
Mon 3/16
Mon 3/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Otopeni Intl to Philadelphia 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 Otopeni Intl to Philadelphia

Cheapest flights from Otopeni Intl to Philadelphia
Explore the most affordable flight options available from Otopeni Intl to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 14, 2026.

This United Airlines deal was found by Cheapflights users on 2/12. 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.
Thu 4/96:05 am
OTP
-
PHL
1 stop17h 00m
United Airlines
Thu 4/167:45 pm
PHL
-
OTP
2 stops20h 35m
United Airlines
Deal found 2/12$682
This United Airlines deal was found by Cheapflights users on 2/11. 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.
Sun 3/155:55 am
OTP
-
PHL
2 stops22h 49m
United Airlines
Sun 3/222:52 pm
PHL
-
OTP
2 stops17h 13m
United Airlines
Deal found 2/11$727
This Mytrip deal was found by Cheapflights users on 2/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/155:55 am
OTP
-
PHL
1 stop17h 10m
Lufthansa
Sun 3/226:40 pm
PHL
-
OTP
1 stop13h 25m
Lufthansa
Deal found 2/11$731
This Gotogate deal was found by Cheapflights users on 2/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:05 am
OTP
-
PHL
1 stop17h 00m
Lufthansa
Thu 4/165:40 pm
PHL
-
OTP
1 stop15h 50m
Lufthansa
Deal found 2/12$744
This Gotogate deal was found by Cheapflights users on 2/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/155:55 am
OTP
-
PHL
1 stop17h 10m
Multiple Airlines
Sun 3/223:30 pm
PHL
-
OTP
2 stops15h 00m
Multiple Airlines
Deal found 2/11$795
This British Airways deal was found by Cheapflights users on 2/10. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:15 am
OTP
-
PHL
1 stop15h 25m
British Airways
Wed 9/236:45 pm
PHL
-
OTP
1 stop22h 35m
British Airways
Deal found 2/10$838
This Gotogate deal was found by Cheapflights users on 2/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/286:35 pm
OTP
-
PHL
2 stops27h 30m
Multiple Airlines
Sat 4/43:30 pm
PHL
-
OTP
2 stops20h 05m
Multiple Airlines
Deal found 2/11$854

Find flight deals from Otopeni Intl to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Otopeni Intl (OTP) to Philadelphia (PHL). 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 February 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$682
(United Airlines)

One-way from

$400
(Kiwi.com)

Popular in

January

Cheapest in

October

Average price

$666
Provider with most accurate pricing for Bucharest Otopeni Intl-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bucharest Otopeni Intl-Philadelphia flights.
Search Deals
From Bucharest Otopeni Intl to Philadelphia
Search Deals
One-way flight from Bucharest Otopeni Intl to Philadelphia
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Otopeni Intl to Philadelphia 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 February 14, 2026.
Use the filters below to find and compare flights from Bucharest Otopeni Intl Airport to Philadelphia that are best for you.

Fly from

Otopeni Intl

Fly to

Philadelphia

Route

Depart

Return

Price

BucharestPhiladelphia

OTP - PHL

OTPPHL

Bucharest Otopeni Intl

Thu 4/9

6:05 am-4:05 pm

1 stop17h 00m

Philadelphia

Thu 4/16

7:45 pm-11:20 pm

2 stops20h 35m

$682

BucharestPhiladelphia

OTP - PHL

OTPPHL

Bucharest Otopeni Intl

Sun 3/15

5:55 am-10:44 pm

2 stops22h 49m

Philadelphia

Sun 3/22

2:52 pm-2:05 pm

2 stops17h 13m

$727

BucharestPhiladelphia

OTP - PHL

OTPPHL

Bucharest Otopeni Intl

Sun 3/15

5:55 am-5:05 pm

1 stop17h 10m

Philadelphia

Sun 3/22

6:40 pm-2:05 pm

1 stop13h 25m

$731

BucharestPhiladelphia

OTP - PHL

OTPPHL

Bucharest Otopeni Intl

Thu 4/9

6:05 am-4:05 pm

1 stop17h 00m

Philadelphia

Thu 4/16

5:40 pm-4:30 pm

1 stop15h 50m

$744

BucharestPhiladelphia

OTP - PHL

OTPPHL

Bucharest Otopeni Intl

Sun 3/15

5:55 am-5:05 pm

1 stop17h 10m

Philadelphia

Sun 3/22

3:30 pm-12:30 pm

2 stops15h 00m

$795

BucharestPhiladelphia

OTP - PHL

OTPPHL

Bucharest Otopeni Intl

Sat 3/28

6:35 pm-4:05 pm

2 stops27h 30m

Philadelphia

Sat 4/4

3:30 pm-6:35 pm

2 stops20h 05m

$854

BucharestPhiladelphia

OTP - PHL

OTPPHL

Bucharest Otopeni Intl

Thu 4/9

5:35 am-6:55 pm

3 stops20h 20m

Philadelphia

Thu 4/16

5:40 pm-9:25 pm

2 stops20h 45m

$1,114

BucharestPhiladelphia

OTP - PHL

OTPPHL

Bucharest Otopeni Intl

Sat 3/28

8:05 am-5:15 pm

1 stop15h 10m

Philadelphia

Sat 4/4

6:45 pm-2:00 pm

1 stop12h 15m

$1,372

BucharestPhiladelphia

OTP - PHL

OTPPHL

Bucharest Otopeni Intl

Thu 4/9

6:00 am-9:23 pm

3 stops22h 23m

Philadelphia

Thu 4/16

3:42 pm-11:30 pm

3 stops24h 48m

$1,629

BucharestPhiladelphia

OTP - PHL

OTPPHL

Bucharest Otopeni Intl

Wed 3/11

9:05 pm-10:50 am

3 stops43h 45m

$400

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/13

  • Most accurate provider: When it comes to deals on Bucharest Otopeni Intl Airport-Philadelphia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Bucharest Otopeni Intl Airport-Philadelphia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Bucharest Otopeni Intl Airport-Philadelphia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Bucharest Otopeni Intl Airport-Philadelphia flights, Cheapflights users trust FlightHub the most. FlightHub 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 Bucharest Otopeni Intl Airport-Philadelphia 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 Otopeni Intl to Philadelphia

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

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

Currently, October is the cheapest month in which you can book a flight from Bucharest Otopeni Intl Airport to Philadelphia (average of $321). Flying from Bucharest Otopeni Intl Airport to Philadelphia in January is currently the most expensive (average of $594). 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.

How much does it cost to fly round-trip from Bucharest Otopeni Intl Airport to Philadelphia?

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. 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 Philadelphia. Reviews last updated February 14, 2026.
Peruse reviews from past customers who have flown with British Airways from Bucharest Otopeni Intl Airport to Philadelphia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,739 reviews

Crew

7.6

Food

6.4

Overall

6.7

Boarding

6.9

Entertainment

6.4

Comfort

6.8

Reviews

1 / 20
6.0
Good

Roxanne,Sep 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.
British Airways
6.7
Okay
7,739 reviews
British Airways
6.7
Okay
7,739 reviews

Crew

7.6

Food

6.4

Overall

6.7

Boarding

6.9

Entertainment

6.4

Comfort

6.8

Reviews

1 / 20
6.0
Good

Roxanne,Sep 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.

Related info for your journey

Find useful and relevant information for your journey from Otopeni Intl to Philadelphia. 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 into for flights to Philadelphia from Bucharest Otopeni Intl?

    Philadelphia (PHL) is the airport you will fly into if you book a flight from Bucharest Otopeni Intl to Philadelphia. You should not have trouble finding flights to Philadelphia from Bucharest Otopeni Intl; the airport handles an average of 0 inbound flights from Bucharest Otopeni Intl per day. You should also have plenty of airline options to choose from since 1 airline has flights to the Philadelphia airport from Bucharest Otopeni Intl. It is only a 7.0 mi journey from Philadelphia (PHL) to Philadelphia’s city center.

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

    United Airlines and Lufthansa can get you from Bucharest Otopeni Intl Airport to Philadelphia in just under 17h. Your travel time can differ by up to 10m. The distance from Bucharest Otopeni Intl Airport to Philadelphia is about 4831 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Bucharest Otopeni Intl Airport to Philadelphia round-trip?

    Cheapflights users have booked flights from Bucharest Otopeni Intl Airport to Philadelphia round-trip from $635. British Airways is currently priced 16% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Otopeni Intl to Philadelphia 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 Bucharest Otopeni Intl Airport to Philadelphia?

    Currently, October is the cheapest month in which you can book a flight from Bucharest Otopeni Intl Airport to Philadelphia (average of $321). Flying from Bucharest Otopeni Intl Airport to Philadelphia in January is currently the most expensive (average of $594). 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 Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood
Pottstown
Reading
Ocean City
King of Prussia
Cherry Hill
Lewes
Dewey Beach
Ephrata
Camden
Vineland
Milford
Dover
Elkton
Essington
Willow Grove
New Castle
Millville
Glen Mills
Newark

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 airline flying from Otopeni Intl to Philadelphia

Discover the top airline that operate flights from Otopeni Intl to Philadelphia. 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 February 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$635Average$734FlexibilityNo 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.