$510 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 9/4. 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
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

Mon, May 18 - Mon, May 25
United Airlines Logo
6:20 am - 4:05 pm
SOF
-
PHL
16h 45m
1 stop
United Airlines Logo
7:45 pm - 10:40 pm
PHL
-
SOF
19h 55m
2 stops
$800United Airlines
Mon, May 18 - Mon, May 25
United Airlines Logo
6:20 am - 9:54 am
SOF
-
PHL
34h 34m
2 stops
United Airlines Logo
7:45 pm - 10:40 pm
PHL
-
SOF
19h 55m
2 stops
$822United Airlines
Wed, Aug 12 - Thu, Aug 20
United Airlines Logo
6:10 am - 9:46 am
SOF
-
PHL
34h 36m
2 stops
United Airlines Logo
1:31 pm - 6:40 pm
PHL
-
SOF
22h 09m
2 stops
$843United Airlines
Wed, Aug 12 - Thu, Aug 20
Multiple Airlines Logo
6:55 pm - 4:05 pm
SOF
-
PHL
28h 10m
2 stops
Multiple Airlines Logo
5:40 pm - 1:20 pm
PHL
-
SOF
12h 40m
1 stop
$853Multiple Airlines
Wed, Aug 12 - Thu, Aug 20
Lufthansa Logo
7:00 pm - 4:05 pm
SOF
-
PHL
28h 05m
1 stop
Lufthansa Logo
5:40 pm - 1:20 pm
PHL
-
SOF
12h 40m
1 stop
$880Lufthansa
Mon, May 18 - Mon, May 25
Multiple Airlines Logo
4:05 pm - 4:05 pm
SOF
-
PHL
31h 00m
2 stops
Multiple Airlines Logo
5:40 pm - 10:20 am
PHL
-
SOF
33h 40m
2 stops
$888Multiple Airlines
Mon, May 18 - Mon, May 25
Multiple Airlines Logo
8:10 pm - 12:10 pm
SOF
-
PHL
23h 00m
1 stop
Multiple Airlines Logo
10:05 pm - 2:00 pm
PHL
-
SOF
32h 55m
1 stop
$1,041Multiple Airlines
Mon, May 18 - Mon, May 25
Multiple Airlines Logo
2:40 pm - 4:05 pm
SOF
-
PHL
32h 25m
2 stops
Multiple Airlines Logo
5:40 pm - 10:20 am
PHL
-
SOF
33h 40m
3 stops
$1,101Multiple Airlines
Wed, Aug 12 - Thu, Aug 20
Multiple Airlines Logo
10:55 am - 10:09 am
SOF
-
PHL
30h 14m
3 stops
Multiple Airlines Logo
3:25 pm - 6:40 pm
PHL
-
SOF
20h 15m
2 stops
$1,239Multiple Airlines
Wed, Aug 12 - Thu, Aug 20
Multiple Airlines Logo
10:55 am - 10:09 am
SOF
-
PHL
30h 14m
3 stops
Multiple Airlines Logo
3:25 pm - 3:45 pm
PHL
-
SOF
17h 20m
3 stops
$1,327Multiple 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 $800 return. The most popular connection is from Boston to Philadelphia and KAYAK users have found round-trip deals for as low as $162 in the last 3 days.

Good to know

Low seasonSeptember
Cheapest flight$510
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly with an average 9% 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 $800 return. The most popular connection is from Boston to Philadelphia and KAYAK users have found round-trip deals for as low as $162 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 6,034 direct flights from within Bulgaria to Philadelphia. The most common day for departures is Sunday, with 16% 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 airline 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.
6.8
LufthansaOverall score based on 7964 reviews
6.3Food
6.4Entertainment
6.8Comfort
7.6Crew
7.0Boarding
Airline reviews

Flight was delayed by several hours and then cancelled due to weather. But Staff was very helpful getting me on a different flight. United should offer food coupons and tooth brush and paste for stranded passengers

6.0 GoodDevasena, Apr 2026
ORD - FWA
Read more Lufthansa reviews

Flight was delayed by several hours and then cancelled due to weather. But Staff was very helpful getting me on a different flight. United should offer food coupons and tooth brush and paste for stranded passengers

Service was excellent. Flight was only about half full, which meant we had tons of room to stretch out. Boarding area was nice and well organized, flight attendants were super friendly and attentive and we loved the 3 snacks!

My flight was cancelled, but it was not Kayak's fault. Kayak did require me to pay for the ticket twice to two different venders who paid Lufthansa. Kayak/Lufthansa owes me for the first booking I made first was fraudulent on the part of the subcontracting ticket seller. There will be litigation over this issue under the current passenger protection laws.

flight was half full, plenty of empty seats, was able to lie down across 4 seats, food was good, arrived on time

Was never allowed on and not refunded the full amount of the ticket plus charged a $300 processing fee.

Terrible. Our flight was completely cancelled with no options to rebook until 4 days later.

Generally good. Not their fault but the design of the Boeing 747 had seating supports directly in line with my legs. So my legs always had to straddle this support which caused body misallignment. Such poor design from Boeing. There was no USB port for me to charge my phone. The screen touch control was very poor.

I like crew. They are friendly. The flight was delayed to take off for 1hr and that caused panic at Houston Airport to catch connecting flight due to security check delay. If it has reached on time I would have sufficient time in collecting bags and security check

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

Traveling to a place near Philadelphia?

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

Everything you need to know for your flight to Philadelphia

Information on the airport you'll fly into in Philadelphia