$550 Find Cheap Flights from Bulgaria to Philadelphia

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight to Philadelphia departing on 5/11. 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.
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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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Flights Deals

Cheap Flight Deals 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.

Recent round-trip flight deals from Bulgaria to Philadelphia

KAYAK's recommended round-trip deals from the most popular airlines that fly from Bulgaria to Philadelphia.
Discover the best prices for you by selecting your travel dates on KAYAK.
British Airways Logo
9:10 pm - 4:25 pmSOF-PHL
26h 15m1 stop
British Airways Logo
7:55 pm - 8:20 pmPHL-SOF
17h 25m1 stop
$550British Airways
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Sun, May 11 - Sat, May 24
 Logo
7:00 am - 8:55 pmSOF-PHL
20h 55m2 stops
 Logo
1:00 pm - 2:00 pmPHL-SOF
18h 00m2 stops
Sat, May 10 - Sat, May 24
 Logo
7:00 am - 5:17 pmSOF-PHL
17h 17m2 stops
 Logo
1:00 pm - 2:00 pmPHL-SOF
18h 00m2 stops
Sun, May 11 - Sat, May 24
United Airlines Logo
6:20 am - 4:00 pmSOF-PHL
16h 40m1 stop
United Airlines Logo
10:35 am - 11:15 amPHL-SOF
17h 40m2 stops
$643United Airlines
Find Deal
Sun, May 11 - Sun, May 25
Lufthansa Logo
6:20 am - 4:00 pmSOF-PHL
16h 40m1 stop
Lufthansa Logo
5:35 pm - 10:50 pmPHL-SOF
22h 15m1 stop
$661Lufthansa
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Sun, May 11 - Fri, May 23
United Airlines Logo
6:15 am - 10:06 pmSOF-PHL
22h 51m2 stops
United Airlines Logo
5:35 pm - 10:50 pmPHL-SOF
22h 15m1 stop
$665United Airlines
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Fri, Jun 13 - Fri, Jun 20
Austrian Airlines Logo
8:00 am - 10:28 pmSOF-PHL
21h 28m2 stops
Austrian Airlines Logo
5:35 pm - 3:20 pmPHL-SOF
14h 45m2 stops
$679Austrian Airlines
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Sat, May 10 - Fri, May 23
Lufthansa Logo
6:15 am - 4:00 pmSOF-PHL
16h 45m1 stop
Lufthansa Logo
5:35 pm - 10:50 pmPHL-SOF
22h 15m1 stop
$689Lufthansa
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Fri, Jun 13 - Fri, Jun 20
United Airlines Logo
8:00 am - 9:23 pmSOF-PHL
20h 23m2 stops
United Airlines Logo
5:35 pm - 1:25 pmPHL-SOF
12h 50m1 stop
$710United Airlines
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Sat, May 10 - Fri, May 23
Qatar Airways Logo
1:30 pm - 9:00 amSOF-PHL
26h 30m1 stop
Qatar Airways Logo
8:45 pm - 12:30 pmPHL-SOF
32h 45m1 stop
$4,014Qatar Airways
Find Deal
Sat, May 10 - Sat, May 24
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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.

How long is the flight to Philadelphia?

The duration of your flight to Philadelphia depends on your departure and arrival airports. Obviously, any flights that include a layover will also be longer. The most popular route to Philadelphia on KAYAK is from Sofia, which takes 25h 55m.

How many direct flights to Philadelphia are there each day?

There are around 376 direct flights from within Bulgaria to Philadelphia every day. Most flights depart in the morning, with 8:00 am the most common departure time and 52% of flights departing in the morning.


Good to know

Low seasonMarch
High seasonApril
Cheapest flight$550
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly and prices are also 4% lower on average.
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 round-trip tickets can be as cheap as $579. On the other hand, the most expensive day to fly is Thursday, where round-trip 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 round-trip 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 2,632 direct flights from within Bulgaria to Philadelphia. The most common day for departures is Sunday, 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.

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 8696 reviews
7.1Entertainment
6.6Food
8.1Crew
7.3Comfort
7.7Boarding
Airline reviews

Our flights got changed from United to Air Canada and our purchased seats did not get transferred so we had to pay for seats twice. I brought it up with Air Canada and they stated I had to go back and chase it with United. The united seats were $21 Canadian each and Air Canada were $56 each so we have paid $77 for each seat. Very unhappy

2.0 MediocreBrant, Apr 2025YHZ - EWR
Read more United Airlines reviews

Our flights got changed from United to Air Canada and our purchased seats did not get transferred so we had to pay for seats twice. I brought it up with Air Canada and they stated I had to go back and chase it with United. The united seats were $21 Canadian each and Air Canada were $56 each so we have paid $77 for each seat. Very unhappy

A bit rush for transit. Food and entertainment are not available

So far so good but food and entertainment are not available for this flight

Multiple delays and not straight answer from the United team

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

The plane was very clean. The bathroom was clean as well. The land crew were very polite and informative and helpful. They informed me that there is a long way and challenging to go from international terminal to national terminal and in addition to getting my suitcases and going through customs and dropping them again for my second leg of trip which was San Francisco to Los Angeles . I have left knee issue and had a recent fall with aching muscles all over, the land crew suggested wheelchair help for me, God bless her. If I did not have help, I could not make it to my last terminal. Thank you UNITED AIRLINE!

I like the service and the efficiency. I am lactose intolerant and the lactose intolerant meal in business class was not astounding. Also, the business class fully reclining seats are not that comfortable.

Food was great but they didn't clear my meal tray for 3 hours. You'd think they could check though the cabin now and then.

Upon arriving at IAH, it was informed that the luggage had not arrived. Still waiting to hear back when it will be delivered.

I wasn’t allowed to board with my children. I was charged outrageous costs for basic carry on size luggage. The entertainment screens were outdated and not user friendly.

I was very happy with everything, thank you for the smooth flight ✈️

helpful and friendly. The Lufthanza people I dealt with before my holiday were so unhelpful by comparison.

I enjoyed my flight back with Lufthansa because the food was good, and the flight attendants were nice and helped you when you asked a question. The flight attendants always came around and asked if you needed anything which I liked a lot.

Entertainment system is old. Food can be tastier Need to provide toothbrush and toothpaste at least when asked.

The flight was cancelled due to tech problem with the plane

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
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Everything you need to know for your flight to Philadelphia

Information on the airport you'll fly into in Philadelphia

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