$473 Find Cheap Flights from Philadelphia to Bulgaria - Compare and Save

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1 adult, Economy, 0 bags

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Price, demand and travel trends for Philadelphia to Bulgaria flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What are the cheapest fares from Philadelphia to Bulgaria right now?

The cheapest fare from Philadelphia to Bulgaria in the last week was $690 round-trip, to Sofia (SOF).

What’s the cheapest month to fly from Philadelphia to Bulgaria?

November is the cheapest time of year to fly, with average fares of $540. Prices are highest in May, when average flight costs increase to around $1,281.

Which airport in Bulgaria is the cheapest to fly to from Philadelphia?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into Bulgaria are:

• Sofia (SOF) (avg. price $808)
• Varna (VAR) (avg. price $1,365)

What’s the cheapest day to fly from Philadelphia to Bulgaria?

Sunday tends to be the cheapest day to fly from Philadelphia to Bulgaria, while Wednesday is the most expensive. Fares run about 37% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Philadelphia to Bulgaria?

Data from the past 12 months shows it's cheapest to fly to Bulgaria during the afternoon with average prices of $776. The night is the most expensive time to fly, with average prices of $1,549.

Key details for Philadelphia to Bulgaria flights

Low season

January

Cheapest flight

$473
Beat the crowds with an average 72% drop in travelers.
The most popular month to fly with an average 67% increase in travelers.
One-way flight from Philadelphia to Sofia

Your Philadelphia to Bulgaria flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Philadelphia to Bulgaria?

    Fares from Philadelphia to Bulgaria are around their usual level right now. A round-trip under $603 is considered a good deal, so it's worth keeping an eye out, or setting a Price Alert to catch price changes.

  • How much should I budget for a flight from Philadelphia to Bulgaria?

    Over the past 12 months, round-trip fares from Philadelphia to Bulgaria have ranged from $603 to $1,199.

  • What airlines fly nonstop from Philadelphia to Bulgaria?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from Philadelphia to Bulgaria. One-stop options include American Airlines and British Airways.

  • Which cabin classes are available on flights from Philadelphia to Bulgaria?

    On flights from Philadelphia to Bulgaria you can book Economy Class or Business Class.

  • What are some popular landmarks in Bulgaria?

    KAYAK travelers' favorite landmarks in Bulgaria include:

    • Vasil Levski National Stadium
    • National Palace of Culture
    • Central Sofia Market Hall
    • Prince Alexander of Battenberg Square

Your guide to booking Philadelphia to Bulgaria flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your travel dates are flexible, book your trip for November when flights are typically cheapest and avoid May when prices are at their highest.
  • Flying on Sunday is usually the cheapest. Flights on Wednesday cost about 37% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, Sofia (SOF) is the cheapest airport to fly into from Philadelphia. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in Sofia, which is the most popular destination in Bulgaria. From there, it's easy to continue on to other popular destinations such as Varna, Sunny Beach and Bansko.

Reviews of the top airlines flying 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.
7.3
United AirlinesOverall score based on 10460 reviews
7.7Boarding
6.7Food
7.3Comfort
8.1Crew
7.1Entertainment
Airline reviews

Just sat on the run way after we arrived early

6.0 GoodMatthew, Oct 2026
Read more United Airlines reviews

Just sat on the run way after we arrived early

Stored my cloth purse under seat in front off me as instructed. When I retrieved it, half of it was soaked, along with everything inside it. I don’t really know how that could have been prevented because the area did not look wet, but I was not happy about it.

It was easy to board, and the staff was friendly and helpful. What could have been better is that I shouldn't have to pay extra for a seat that doesn't recline.

Like the fact that the boarding was expedited. But the delay and chaos around the onboarding was not appreciated.

The flight crew were very helpful. The seats were very close together. There was barely room to sit without touching the person next to you.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

My husband and I recently had an unfortunate experience with Lufthansa. At the Philadelphia International airport, the ground staff refused to board us because we didn’t have a current visa stamped on our passports for Frankfurt. We completely understand that this was our mistake. we should have double-checked the visa requirements before our trip. However, the issue that upset us most was how the situation was handled by the staff. They told us they would mark it as “boarding denied due to visa issue”, but instead they recorded it as “no show”. Because of that incorrect entry, our return flight was automatically cancelled as well, which caused additional stress and expense. Mistakes can happen, but we expected more transparency and accuracy from a reputed airline like Lufthansa. It would have made a big difference if the staff had been more careful and considerate in documenting the situation correctly.

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

Flight was on time, crew were excellent. For some reason our originally selected seats were changed. We had to re-choose our seats when we checked in online and options were limited. One of our two checked bags we placed on the wrong carousel. It was only be shear luck that I saw it. That cost us 20 minutes of wasted time. So much for the “priority” tags. They are meaningless, and have been ever since they were implemented. I wish you would do the save some money and stop using them.

Extremely uncomfortable seats. Experience was like a Frontier Airlines flight. Would not fly it again.

Booked Economy but it translated to economy light for Lufthansa so now we are stuck paying an extra $75 per person both ways for our checked bags. If I had known that, I would have never booked these tickets because it came out to be more than other options. The booking in the kayak side clearly says Economy and has a link to the inormation for Lufthansa which states Economy included a checked bag. Super annoyed about that.

Flight was a little late. The crew was courteous, food ok

Very nice. Crew was excellent and our seats had great legroom which we paid extra for so I highly recommend this option when flying internationally.

Check in was great. Boarding seemed less organized. Flight was good.

My flight was canceled. New flight is 40 hours later and I still didn’t get the flight from Frankfurt to Zagreb.

Meals were nice are abundant, the staff on both flights were personable and well trained

Budget airline feeling. Bad food, no drinks stingy to give even water

The transatlantic leg was on Discover Airlines. I’m 6’2” and the extra leg room seat was acceptable, the seat it self was moderately comfortable (slightly softer than a church pew). The food was a standard economy fare. Frankfurt to Prague leg was on Lufthansa the business class was as advertised 10 across the board.

Recent movies and music availability like it used to be

More options for your flight from Philadelphia to Bulgaria

Complete your trip to Bulgaria with a hotel stay or car rental