Find flights
Deals
When to book
FAQs & Tips
Airlines

Find cheap flights from Philadelphia to Bulgaria from $555

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Bulgaria departing on 11/4. 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
0 bags
Thu 7/11
Thu 7/18

Search hundreds of travel sites at once for deals on flights to Bulgaria

In the last 7 days travelers have searched 44,212,782 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Best Bulgaria Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Sofia
Sofia1 stop$555

Good to know

Low season

January

High season

August

Cheapest flight

$555
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 17% increase in price.
Flight from Philadelphia to Sofia

FAQs - booking Bulgaria flights

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

    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 from Philadelphia to Bulgaria.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bulgaria from 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 from Philadelphia to Bulgaria?

    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 Bulgaria with an airline and back to Philadelphia with another airline.

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

    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 Bulgaria from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Bulgaria

  • Morning departure is around 40% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 4 airlines serving from Philadelphia to Bulgaria

Need help choosing which airline to fly with from Philadelphia to Bulgaria? 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 10629 reviews
7.1Entertainment
7.7Boarding
7.2Comfort
8.1Crew
6.7Food
Airline reviews

The entertainment wasn’t playing in the app or online.

4.0 OkayJohn, Jun 2024SFO - DCA
Read more about United Airlines reviews

The entertainment wasn’t playing in the app or online.

Lady was a bit rude during boarding and I was being nice to her.

Why does it have to be painful to fly long distances?

It is a modern tragedy that any airline expects you to travel for 14 hours in such discomfort and that the only way to add comfort is exorbitant prices. I was in pain by the time we landed. Shameful.

Original plane sidelined. Had to wait an hour for replacement.

Crew was very cooperative and professional. Passenger's first checked in bag should be free.

No real agent onsite helping you for missing luggage there. Not like the other airline next to UA desk, they have staff attending in their desk assisting answer/helping luggage issue, even after midnight.

Horrible, the flights kept delaying, so it is obvious that we won't be able to make it to the next connection. No easier/real agent on site to help you figure this out. UA agent on other counters refuse to assist you and direct us to use the QR code/call customer service. So inefficient and poor. While technology seems convenient, but it's not the best interest/experience for customers need help while there is active issue need assistance.

Food is very bad and entertint not too many options ... flight attendet service is not good

After the morning frenzy of 35 min wait through CLT security at 4;30 AM, it was nice to have a smooth pleasant boarding experience. This 6:30 AM flight was not full. We were able to get seated swiftly and took off promptly. Nice touch they distributed the old fashioned headsets with 8 mm jacks. Snacks were decent and arrival was uneventful.

The flight from Amsterdam to Dallas was great, ok food, good service, great entertainment. But Dallas to SF was very tiring because of two hour delay inside the airplane waiting for AA paper work in 99 degrees in the sun. We had no oxygen and the pilot had to ask everyone to blast the AC because it was getting too hot inside the cabin.

American Airlines switched aircrafts for some reason and the new plane had to be checked, It took an hour for this while we were on the plane parked. But then we waited one more hour for an officer to come and fill out paperwork so that he could ok the plane or fly it himself, something of that nature. It was 99 degrees in Dallas and we were cooking inside the plane. The pilot had to ask everyone to shut the window shutters and open the air full blow because it was too hot inside the cabin and smelled like gasoline. Worse was that when I bought the ticket, the third party seller called to insist in buying insurance for this flight. I told them no because I was not going to save any money after all, so I made it to SF somehow by a miracle. Why buy insurance when the airlines are responsible for any delay, cancelation, or problem. Please advice third party sellers like Underpricer to not call and try to sell insurance at $100 per passenger.

As a disabled passenger the arrangements for getting me to the plane and onto the plane were excellent as was the reception and arrangements at Chicago.

We left our child’s tablet on our seat 12 B on the plane and we can’t get a hold of anyone to try to get help locating the tablet.

My flight was cancelled after a 7 hour delay. I am awaiting a refund.

Ability to select seating would be nice. We were family of three and they had us seated back to back and one of us on the other side of the plane??? That is pretty goofy. Especially when tickets were placed two months in advance.

Good. Madrid to SFO was way better than ARN to Madrid. Mercifully, the seats to Madrid didn't recline. So although there was no leg room, your knees didn't get crushed

My son and I are 193 cm tall. We had reserved and paid for seats with extra leg room towards the front of the cabin. The day of the flight, we learned that Iberia had changed aircraft. We were assigned regular seats way back in the cabin. When we landed from our first leg we spoke with agents at the gate and we were told that they couldn’t improve our seats because the flight was full.

Our flight was delayed by 2-hrs but I understand it was beyond the scope of the crew members

I am quite satisfied. The flight was on time and landed early. Staff was friendly.

United delayed the flight to assist customers to make the connection. The Ohara customs area was overwhelm which created an issue for customers trying to make the Little Rock connection. The delayed allow several customers to make the final flight into Little Rock.

Missed our flight to London and we were put on coach seats to Munich.

Terrible. Missed our flight to Newark as well as our flight to London. Complete disaster

They canceled our flight last minute and we had to get another flight with twice the cost

Dinner was excellent - beef stew, the eggs for breakfast were only ok. It was soooo nice that there were so many options for movies and games.

Captain waited 45 minutes for late passengers boarding from Washington DC to Munich which was nice for them but caused our luggage to miss boarding our connection on to Bucharest. We then did not receive our luggage for about 48 hours after landing which was very inconvenient for our travel.

Poor, we had 1 hour to grab our checked luggage, go through customs, recheck bags and run across terminals to make our United flight. Poorly planned connections.

Check in in Albuquerque was awful. The people were great but they were over loaded. The procedures were terrible. We got through fine but it took 90+ minutes.

Will try to not fly with them again. Delays because of weather but got redirected to an airport where I could not make connection.

Staff didn’t care in business class. Closed the door on my mom while she was on the jetbridge and flight attendant told me she would make it from the connecting flight. They lied. My luggage was damaged on arrival. No success in filing damage claim.

Economy class has no legroom so if you have the money worth to upgrade! Food was absolutely horrible! The crew was super nice!!!!!

The flight was provided by Aer Lingus and our seats were in a poor condition (15A & 15C). They looked like they needed repairing/replacing and were uncomfortable for such a long flight. Also the arm rests on Aer Lingus planes do not lift more than around 45 degrees, instead of the usual 90 degrees upright, meaning you cannot maximum the space between you & your travel companion so as to be more comfortable for such a long flight.

Flights were actually with Aer Lingus outward and American Airlines & Aer Lingus on the return journey. Outward flight with Aer Lingus was good but the return flight with them was not so good as our seats were in a poor condition (15A & 15C) and looked like they needed replacing! The American Airlines flight from Miami to JFK New York was good and the seats were very comfortable and spacious (32D & 32E)

Awful. Delay, lost vacation time and travel time now more than 24h

Awful. Flight delayed and we missed our long flight to Rome. It has been a nightmare and we have still not arrived. It was NOT a weather delay, just poor planning by AA

Boarding was as fast and efficient as possible. The flight crew were amazing and extremely friendly. We enjoyed our flight.

Very bed boarding, there was overbooked and make a lot of problems and noises

There was a problem in the luggage because there were not porters

On my way from Chicago to London, I was seated next to a quite heavy passenger. I could barely move. BA should have ensured that overweight customers are placed in comfortable seats and not to penalize also other passengers because BA is not willing to accommodate these passengers and their needs. No respect at all.

The flight as far as timings go was excellent. Unfortunately we ended up sat with someone on a night flight who had been drinking alcohol before boarding and BA staff were happily serving him more alcohol. He was very drunk which made our flight uncomfortable and awkward. My partner had this person lying on him whilst asleep. Alcohol should be served minimally. If there had been an emergency this person would not have been in a fit state to act accordingly.

Book cheap flights from Philadelphia to Bulgaria

Recent round-trip flight deals

11/4Mon
1 stopBritish Airways
15h 35mPHL-SOF
11/11Mon
1 stopBritish Airways
30h 05mSOF-PHL
$555
11/4Mon
2 stopsAmerican Airlines
20h 35mPHL-SOF
11/11Mon
2 stopsAmerican Airlines
33h 40mSOF-PHL
$561
10/29Tue
2 stops
15h 20mPHL-SOF
11/7Thu
2 stops
23h 30mSOF-PHL
$583
10/29Tue
1 stopLufthansa
12h 45mPHL-SOF
11/7Thu
2 stopsLufthansa
16h 55mSOF-PHL
$597
10/29Tue
1 stopLufthansa
17h 05mPHL-SOF
11/7Thu
1 stopLufthansa
17h 00mSOF-PHL
$600
8/6Tue
2 stopsUnited Airlines
25h 23mPHL-SOF
8/21Wed
2 stopsUnited Airlines
18h 13mSOF-PHL
$857
8/17Sat
2 stopsUnited Airlines
42h 49mPHL-SOF
8/26Mon
2 stopsUnited Airlines
34h 34mSOF-PHL
$885
8/6Tue
1 stopUnited Airlines
22h 00mPHL-SOF
8/21Wed
2 stopsUnited Airlines
18h 13mSOF-PHL
$888
7/10Wed
1 stop
22h 00mPHL-SOF
7/17Wed
2 stops
33h 49mSOF-PHL
$1,016
6/29Sat
2 stopsAustrian Airlines
14h 45mPHL-SOF
7/17Wed
2 stopsAustrian Airlines
15h 00mSOF-PHL
$1,687

Search by stops

Search by airline

Search by price

Last minute flights from Philadelphia to Bulgaria

Last minute flight, train and bus deals

6/15Sat
multi-stopUnited Airlines
22h 40mPHL-SOF
7/9Tue
multi-stopUnited Airlines
25h 29mSOF-PHL
$1,022
6/12Wed
multi-stop
27h 45mPHL-SOF
6/23Sun
multi-stop
16h 30mSOF-PHL
$1,041
6/12Wed
multi-stopUnited Airlines
28h 10mPHL-SOF
6/23Sun
multi-stopUnited Airlines
25h 40mSOF-PHL
$1,052
6/15Sat
multi-stopUnited Airlines
22h 40mPHL-SOF
7/11Thu
multi-stopUnited Airlines
24h 59mSOF-PHL
$1,057
6/12Wed
multi-stopUnited Airlines
17h 30mPHL-SOF
6/23Sun
multi-stopUnited Airlines
32h 55mSOF-PHL
$1,088
6/15Sat
multi-stopAustrian Airlines
23h 20mPHL-SOF
7/10Wed
multi-stopAustrian Airlines
15h 00mSOF-PHL
$1,322
6/16Sun
multi-stop
33h 55mPHL-SOF
7/9Tue
multi-stop
16h 30mSOF-PHL
$1,361
6/15Sat
multi-stopAustrian Airlines
14h 45mPHL-SOF
7/12Fri
multi-stopAustrian Airlines
28h 15mSOF-PHL
$1,392
6/16Sun
multi-stopLufthansa
22h 00mPHL-SOF
7/11Thu
multi-stopLufthansa
16h 30mSOF-PHL
$2,387
6/16Sun
multi-stopLufthansa
22h 00mPHL-SOF
7/8Mon
multi-stopLufthansa
28h 15mSOF-PHL
$2,404

Search by stops

Search by airline

Search by price

Philadelphia - Bulgaria Flights

Departure:

Philadelphia (PHL)United States

Return flight deals:

Bulgaria - Philadelphia

Cabin classes: