$675 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 5/22. 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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Everything you should know

Cheapest round-trip
$675
Typical prices: $729-$792
Lufthansa
Thu 1/15Thu 1/22
SOF - PHL • 1 stop
Cheapest one-way
$418
British Airways
Fri 5/22
SOF - PHL • 1 stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Philadelphia!
Flight Deals
Booking Insights
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, Jan 15 - Thu, Jan 22
Lufthansa Logo
6:00 am - 4:05 pm
SOF
-
PHL
17h 05m1 stop
Lufthansa Logo
5:40 pm - 1:50 pm
PHL
-
SOF
13h 10m1 stop
$675Lufthansa
Thu, Jan 15 - Thu, Jan 22
Lufthansa Logo
6:05 am - 4:05 pm
SOF
-
PHL
17h 00m2 stops
Lufthansa Logo
5:40 pm - 1:50 pm
PHL
-
SOF
13h 10m1 stop
$676Lufthansa
Thu, Jan 15 - Thu, Jan 22
United Airlines Logo
6:00 am - 9:36 pm
SOF
-
PHL
22h 36m2 stops
United Airlines Logo
6:30 am - 10:45 pm
PHL
-
SOF
33h 15m2 stops
$706United Airlines
Thu, Jan 15 - Thu, Jan 22
Multiple Airlines Logo
6:00 am - 3:49 pm
SOF
-
PHL
40h 49m2 stops
Multiple Airlines Logo
3:30 pm - 1:50 pm
PHL
-
SOF
15h 20m2 stops
$725Multiple Airlines
Wed, Jan 28 - Sun, Feb 1
British Airways Logo
9:00 pm - 4:15 pm
SOF
-
PHL
26h 15m1 stop
British Airways Logo
6:35 pm - 4:20 pm
PHL
-
SOF
14h 45m1 stop
$745British Airways
Thu, Jan 15 - Thu, Jan 22
SWISS Logo
4:00 pm - 9:36 pm
SOF
-
PHL
36h 36m2 stops
SWISS Logo
1:10 pm - 6:20 pm
PHL
-
SOF
46h 10m3 stops
$812SWISS
Thu, Jan 15 - Thu, Jan 22
SWISS Logo
4:00 pm - 9:36 pm
SOF
-
PHL
36h 36m3 stops
SWISS Logo
1:10 pm - 6:20 pm
PHL
-
SOF
46h 10m3 stops
$840SWISS
Wed, Jan 28 - Sun, Feb 1
British Airways Logo
9:00 pm - 3:40 pm
SOF
-
PHL
25h 40m2 stops
British Airways Logo
7:50 pm - 4:20 pm
PHL
-
SOF
13h 30m1 stop
$869British Airways
Wed, Jan 28 - Sun, Feb 1
British Airways Logo
9:00 pm - 3:40 pm
SOF
-
PHL
25h 40m2 stops
British Airways Logo
12:23 pm - 4:20 pm
PHL
-
SOF
20h 57m2 stops
$874British Airways
Thu, Jan 1 - Sun, Mar 1
United Airlines Logo
2:35 pm - 9:31 pm
SOF
-
PHL
37h 56m2 stops
United Airlines Logo
5:40 pm - 10:45 pm
PHL
-
SOF
22h 05m1 stop
$1,288United 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 are the most popular airlines flying to Philadelphia?

The most popular airline among KAYAK users flying to Philadelphia is Turkish Airlines, followed by Lufthansa and LOT.

Good to know

Low seasonMarch
Cheapest flight$418
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 13% increase in price.
Flight from Sofia to Philadelphia

FAQs - booking Philadelphia flights

  • 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.

  • What is the cheapest day to fly to Philadelphia?

    Based on KAYAK data, the cheapest day to fly to Philadelphia is Wednesday where tickets can be as cheap as $579. On the other hand, the most expensive day to fly is Thursday, where prices are $986 on average.

  • 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.

  • What is the cheapest time of day to fly to Philadelphia?

    The cheapest time of day to fly to Philadelphia is generally at night, when flights cost $651 on average. The most expensive time of day to fly to Philadelphia is generally in the morning, which is peak travel time and where the average cost of a ticket is $742.

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

    Each week there are around 3,524 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 9095 reviews
8.1Crew
7.1Entertainment
7.7Boarding
6.6Food
7.3Comfort
Airline reviews

Flight was late - I was downgraded from first class to coach

2.0 MediocreMukund, Dec 2025
DEN - SFO
Read more United Airlines reviews

Flight was late - I was downgraded from first class to coach

Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

Movie selection is good. Crew did not understand mileage program and were no help. Sick later. Food?

Staff on board was excellent. Positive upbeat helpful- like it used to be.

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

For an expensive flight to another country, United has a lot of nerve serving pretzels and no meals (unless, of course, you want to buy something to eat). Unacceptable.

The food is terrible. The same pasta or chicken with bad taste and presentation

United have really come back. Airport and boarding process is clear and good, app and information also very good

The Sears in the 800s are not too good perfect Airbus why cant the new 737 fix that

This review is based on 2 things: 1. The lack of hygiene on the plane. 2. William - the head flight attendant. The lack of cleanliness on the plane upon arrival was appalling. Being given a sanitizing wipe upon boarding of the plane is shocking when you consider the cost of a business class flight. UA expects me to do their job and clean all the bread, food and debris left from previous guests. Does this sound normal to you. The seat, the food table and the sides were full of crumbs, chocolate and dirt. When I told the flight attendant they just gave me more wipes so I could clean it myself. Secondly, William the business cabin head flight attendant was so busy flirting with a couple in the front that his attention to the other guests was minimal. He continuously asked them if they were ok or if they needed anything and it didn’t matter if the rest of us needed anything. And if you are the lead attendant shouldn’t you be checking if the bathrooms in business class are clean and needing toilet paper. There were 2 bathrooms in business. Halfway through the flight the first bathroom was closed and the second bathroom was dirty and had no toilet paper one hour and a half before the flight landed. He needs additional training on prioritizing things. He should care less about flirting and more about his work

Booked seats (paid extra) online and found they didn’t exist on the flight. We were then separated from the rest of our party. Given seats in the very back of the plane. We will not fly Discover or Lufthansa again. We will not book flights or travel through Kayak again!

Had a few open seats and could use it for a great rest ful journey

It was very good. Service was friendly and efficient, and food was good.

Airline food is airline food, but the plane was wonderful and the seating comfort outstanding. One of my best flights in quite a while.

Crew was outstanding, helpful and friendly. Food is deteriorating. The snack at the end of the flight was not good, a greasy moosh of toast cheese snd other unidentifiable ingredients. Coming from Germany a pretzl with butter would have been better. Entertainment had a great selection.

Smooth flight with enough time for connection. Ran out of meal options. In-flight and gate staff were friendly and helpful. Good service overall.

The seat space seemed small especially when the person ahead reclined but other than that, very good.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

Give yourself over 2+ hours layover because if flight is slighlty delayed and you miss your connection, Lufthansa will do nothing for you

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
West Chester
Essington
Elkton
Willow Grove
Pottstown
Kennett Square
Somers Point
Voorhees
Middletown
Wyomissing
Glen Mills
Phoenixville
Bird in Hand
Blackwood
Strasburg
Millville

Everything you need to know for your flight to Philadelphia

Information on the airport you'll fly into in Philadelphia