$444 Find Cheap Flights from Bulgaria to Philadelphia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Philadelphia departing on 5/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Philadelphia

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Philadelphia, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Philadelphia, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Bulgaria to Philadelphia

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Bulgaria to Philadelphia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Bulgaria to Philadelphia

Thu, Apr 2 - Thu, Apr 9
Lufthansa Logo
6:30 am - 4:05 pm
SOF
-
PHL
16h 35m
1 stop
Lufthansa Logo
5:40 pm - 1:20 pm
PHL
-
SOF
12h 40m
1 stop
$717Lufthansa
Sun, Apr 26 - Sun, May 3
United Airlines Logo
6:20 am - 4:05 pm
SOF
-
PHL
16h 45m
1 stop
United Airlines Logo
10:00 am - 11:00 pm
PHL
-
SOF
30h 00m
2 stops
$719United Airlines
Sun, Apr 26 - Sun, May 3
Lufthansa Logo
6:20 am - 4:05 pm
SOF
-
PHL
16h 45m
1 stop
Lufthansa Logo
5:40 pm - 6:10 pm
PHL
-
SOF
17h 30m
1 stop
$720Lufthansa
Sun, Apr 26 - Sun, May 3
United Airlines Logo
6:20 am - 5:33 pm
SOF
-
PHL
18h 13m
2 stops
United Airlines Logo
7:45 pm - 6:10 pm
PHL
-
SOF
15h 25m
2 stops
$726United Airlines
Thu, Apr 16 - Thu, Apr 23
Multiple Airlines Logo
6:30 am - 2:46 pm
SOF
-
PHL
15h 16m
2 stops
Multiple Airlines Logo
5:40 pm - 6:25 pm
PHL
-
SOF
17h 45m
1 stop
$727Multiple Airlines
Thu, Apr 2 - Thu, Apr 9
United Airlines Logo
2:10 pm - 12:59 am
SOF
-
PHL
17h 49m
2 stops
United Airlines Logo
5:40 pm - 1:20 pm
PHL
-
SOF
12h 40m
1 stop
$731United Airlines
Thu, Apr 2 - Thu, Apr 9
Lufthansa Logo
6:10 am - 4:05 pm
SOF
-
PHL
16h 55m
2 stops
Lufthansa Logo
5:40 pm - 1:20 pm
PHL
-
SOF
12h 40m
1 stop
$732Lufthansa
Fri, Jul 10 - Fri, Aug 7
United Airlines Logo
6:10 am - 11:44 pm
SOF
-
PHL
24h 34m
2 stops
United Airlines Logo
6:10 am - 11:00 pm
PHL
-
SOF
33h 50m
2 stops
$737United Airlines
Thu, Apr 2 - Thu, Apr 9
United Airlines Logo
6:30 am - 4:05 pm
SOF
-
PHL
16h 35m
1 stop
United Airlines Logo
5:40 pm - 1:20 pm
PHL
-
SOF
12h 40m
1 stop
$740United Airlines
Thu, Apr 2 - Thu, Apr 9
United Airlines Logo
6:30 am - 4:05 pm
SOF
-
PHL
16h 35m
1 stop
United Airlines Logo
7:45 pm - 6:40 pm
PHL
-
SOF
15h 55m
2 stops
$743United Airlines
Booking Insights

KAYAK's insights & trends for flights to Philadelphia

Get data-powered insights and trends for flights to Philadelphia to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to Philadelphia?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the cheapest flight deal to Philadelphia was found on the route from Sofia, at $717 return. The most popular connection is from Boston to Philadelphia and KAYAK users have found round-trip deals for as low as $144 in the last 3 days.

Good to know

Low seasonSeptember
Cheapest flight$444
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from Sofia to Philadelphia

FAQs - booking Philadelphia flights

  • What is the cheapest flight to Philadelphia?

    In the last 3 days, the cheapest flight deal to Philadelphia was found on the route from Sofia, at $717 return. The most popular connection is from Boston to Philadelphia and KAYAK users have found round-trip deals for as low as $144 in the last 3 days.

  • How far is Philadelphia Airport from central Philadelphia?

    The city center of Philadelphia is 7 miles from Philadelphia Airport.

  • What is the name of Philadelphia’s airport?

    There is only 1 airport in Philadelphia, called Philadelphia Airport (PHL). It can also be referred to as Philadelphia or Philadelphia Intl.

  • How does KAYAK find such low prices on flights to Philadelphia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Philadelphia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Philadelphia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Philadelphia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Philadelphia with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Philadelphia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to Philadelphia are there each week?

    Each week there are around 4,480 direct flights from within Bulgaria to Philadelphia. The most common day for departures is Monday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to Philadelphia

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Philadelphia flight deals.

Reviews of the top airlines flying from Bulgaria to Philadelphia

 
See real verified KAYAK customer reviews for airlines flying to Philadelphia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Bulgaria to Philadelphia. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Philadelphia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9427 reviews
7.1Entertainment
7.7Boarding
6.6Food
8.1Crew
7.3Comfort
Airline reviews

Both my flight where delayed Had 25min to make it to my transfer flight

4.0 OkayAnonymous, Mar 2026
BGR - EWR
Read more United Airlines reviews

Both my flight where delayed Had 25min to make it to my transfer flight

Would've been great if Lufthansa union cockpit pilots didn't strike for 2 days and caused a chaos to my returning plans to USA, and then after rebooking a flight 2 days later tge plane departed 35 min later. So I did not have a good experience.

Everything was on time and service on the flight was great!

The boarding in Buenos Aires (at the on ramp) was not great. They had to check every carry on. Not a United problem but was a Buenos Aires problem.

Staff and aircraft were good. However, weather in Houston lee to a ground stop. We were looking at circling behind three other planes until the stop was lifted. Pilot said we didn’t have enough fuel for that. So we flew on to New Orleans as the closest port with immigration and customs staff. Landed there and sat in the plane for two hours plus while staff was sorted. Turned away by ICE. Waited for pilots to be switched out, but after they were approved by ICE. Then had to wait to get a runway because so many planes were ahead of us. Finally took off and flew back to Houston. We all missed our connecting flights because it took too long. Hotel voucher from United was only a link to booking site. Total BS. Finally got a flight out the next day after a night without sleep because all the Houston hotels were booked by rodeo and spring break crowds.

Wifi Bluetooth features for watching in flight movie was horrible. Screen kept blacking out no connection of sound although it said connected. Other than that smooth trip .

I paid $7,000 to fly round trip to Porto. I thought it was for business class. But on the leg from Miami to Newark, and again from Newark to Miami, i was in coach. One time in the middle seat of coach. From Newark to Porto I was in business class as expected, and it was fine. I fly to Portugal once per month, often paying $5,000 for business class. Usually i fly American Airlines. I'd be happy to fly more with United Airlines. But my experience was disappointing because i was put in the coach for almost half the flights.

The travel company that you have on your site did me so wrong. I don’t know how it happened, but they put my son‘s name on my plane ticket flying to Vietnam. Along with his birthday. They would not have let me fly from Fort Myers to Ho Chi Minh City. I don’t think that I can ever use your service again. I typed my information into the browser along with my passport number and four days before I’m leaving I have to quickly search another ticket to fly out here.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

How about changing the personal out to more friendly human beings? This team was pretty arrogant. No fun!!

Everything could have been better. What needed to be wrong with United went wrong

Excellent service. The crew goes above their way to make the customer comfortable.

It was good. The seats in economy weren’t bad

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

Excellent service; they helped me reschedule so I can fly in an earlier flight

Wonderful staff. The boarding process can be improved a little better by adequate prior communication but all in all they did fine. However the boarding gate was quite unfreindly to elderly and who needs help with sevral stairs.

Flight map did not work. Crew was great, food was good, plane took off on time and landed early. That's all I can ask.

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

Very good. Comfortable and I felt well taken care of from start to finish

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood Crest
Newark
North Wildwood
Vineland
Essington
West Chester
Elkton
Pottstown
Willow Grove
Kennett Square
Voorhees
Somers Point
Middletown
Wyomissing
Glen Mills
Phoenixville
Blackwood
Bird in Hand
Millville
Strasburg

Everything you need to know for your flight to Philadelphia

Information on the airport you'll fly into in Philadelphia