HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Pennsylvania

$335+ Cheap flights from Sofia (SOF) to Pennsylvania

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/19. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — PHL
dic. 3 — dic. 101
mié. 12/3
mié. 12/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Sofia to Pennsylvania with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Sofia to Pennsylvania

Cheapest flights from Sofia to Pennsylvania
Explore the most affordable flight options available from Sofia to Pennsylvania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 3, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/276:45 amSOF - JFK
2 stops22h 45mMultiple Airlines
lun. 12/112:30 amJFK - SOF
1 stop15h 15mMultiple Airlines
Deal found 11/2$540
This KLM deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/97:00 amSOF - IAD
1 stop16h 05mMultiple Airlines
lun. 11/246:50 pmIAD - SOF
1 stop12h 15mMultiple Airlines
Deal found 11/2$553
This Air France deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/197:00 amSOF - IAD
1 stop16h 05mMultiple Airlines
jue. 12/119:25 pmIAD - SOF
1 stop33h 30mMultiple Airlines
Deal found 11/3$554
This KLM deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/117:00 amSOF - IAD
1 stop16h 05mKLM
mié. 12/106:05 pmIAD - SOF
1 stop13h 00mKLM
Deal found 11/1$558
This Mytrip deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/203:15 pmSOF - JFK
2 stops31h 30mMultiple Airlines
mié. 12/35:35 pmJFK - SOF
2 stops22h 55mMultiple Airlines
Deal found 11/2$559
This Mytrip deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/203:15 pmSOF - EWR
2 stops31h 25mMultiple Airlines
mié. 12/36:30 pmEWR - SOF
3 stops22h 00mMultiple Airlines
Deal found 11/2$562
This KLM deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/97:00 amSOF - DCA
2 stops17h 00mMultiple Airlines
lun. 11/242:59 pmDCA - SOF
2 stops16h 06mMultiple Airlines
Deal found 11/2$567
This KLM deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/197:00 amSOF - IAD
2 stops16h 23mKLM
mié. 12/106:05 pmIAD - SOF
1 stop13h 00mKLM
Deal found 11/3$568
This Kiwi.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/178:55 pmSOF - JFK
1 stop32h 35mMultiple Airlines
sáb. 11/2912:30 amJFK - SOF
1 stop29h 55mMultiple Airlines
Deal found 11/2$581
This Booking.com deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/172:35 pmSOF - JFK
1 stop13h 00mLOT
dom. 11/3010:35 pmJFK - SOF
1 stop12h 15mLOT
Deal found 11/1$592
This KLM deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/217:00 amSOF - IAD
2 stops16h 23mMultiple Airlines
mar. 12/96:50 pmIAD - SOF
1 stop12h 05mMultiple Airlines
Deal found 11/3$601
This Air France deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/217:00 amSOF - IAD
2 stops16h 23mMultiple Airlines
jue. 12/119:25 pmIAD - SOF
1 stop33h 30mMultiple Airlines
Deal found 11/3$602

Cheap flight deals from Sofia to Pennsylvania

Keep the following information in mind while searching for Sofia to Pennsylvania flight deals. Data was last updated noviembre 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$537
(Expedia)

One-way from

$335
(Kiwi.com)

Popular in

November

Cheapest in

March

Average price

$986
Provider with most accurate pricing for Sofia-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sofia-Philadelphia flights.
Search Deals
From Sofia to Pennsylvania
Search Deals
One-way flight from Sofia to Pennsylvania
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($100 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sofia to Pennsylvania that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated noviembre 3, 2025.
Use the filters below to find and compare flights from Sofia to Pennsylvania that are best for you.

Fly from

Sofia

Fly to

Pennsylvania

Route

Depart

Return

Price

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

jue. 11/20

7:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

mar. 12/9

6:50 pm-1:55 pm

1 stop12h 05m

$553

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

vie. 11/21

7:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

mié. 12/10

6:05 pm-2:05 pm

1 stop13h 00m

$558

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

jue. 3/26

7:00 am-5:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

mar. 4/28

5:50 pm-2:00 pm

1 stop13h 10m

$558

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

mié. 3/25

7:00 am-5:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

mar. 4/28

5:50 pm-2:00 pm

1 stop13h 10m

$558

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

mar. 1/13

7:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

mié. 2/18

2:15 pm-2:05 pm

2 stops16h 50m

$563

SofiaWashington, D.C.

SOF - DCA

SOFDCA

Sofia

mié. 11/19

7:00 am-5:00 pm

2 stops17h 00m

Washington, D.C. Reagan-National

mar. 12/9

2:55 pm-1:55 pm

2 stops16h 00m

$567

SofiaWashington, D.C.

SOF - DCA

SOFDCA

Sofia

jue. 11/20

7:00 am-4:35 pm

2 stops16h 35m

Washington, D.C. Reagan-National

mar. 12/9

2:55 pm-1:55 pm

2 stops16h 00m

$567

SofiaNew York

SOF - JFK

SOFJFK

Sofia

jue. 11/27

6:00 am-12:25 pm

2 stops37h 25m

New York John F Kennedy Intl

mar. 12/2

6:05 pm-9:30 pm

1 stop20h 25m

$568

SofiaWashington, D.C.

SOF - DCA

SOFDCA

Sofia

mar. 1/13

7:00 am-6:30 pm

2 stops18h 30m

Washington, D.C. Reagan-National

jue. 2/19

3:10 pm-2:05 pm

2 stops15h 55m

$573

SofiaWashington, D.C.

SOF - DCA

SOFDCA

Sofia

jue. 1/15

7:00 am-6:30 pm

2 stops18h 30m

Washington, D.C. Reagan-National

mar. 2/17

3:10 pm-2:05 pm

2 stops15h 55m

$573

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Sofia to Pennsylvania

Have a flexible travel schedule? Discover the best time to fly to Pennsylvania from Sofia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Sofia to Pennsylvania

What is the cheapest month to book a flight from Sofia to Pennsylvania?

Currently, December is the cheapest month in which you can book a flight from Sofia to Pennsylvania (average of $574). Flying from Sofia to Pennsylvania in November is currently the most expensive (average of $986). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SOF to PA?

Find hourly flight availability from Sofia to Pennsylvania. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 3, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 20% on flights from Sofia to Pennsylvania by exploring options for tickets in the afternoon.

Reviews of airlines servicing Pennsylvania

Get insights into the airlines that provide service to Pennsylvania. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Pennsylvania. Reviews last updated noviembre 3, 2025.
Get a feel of what it's like to fly with United Airlines and Lufthansa from Sofia to Pennsylvania by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,997 reviews

Overall

7.4

Entertainment

7.1

Boarding

7.7

Food

6.6

Crew

8.1

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
8,997 reviews
United Airlines
7.4
Good
8,997 reviews

Overall

7.4

Entertainment

7.1

Boarding

7.7

Food

6.6

Crew

8.1

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Lufthansa
6.8
Okay
7,544 reviews
United Airlines
7.4
Good
8,997 reviews

Overall

7.4

Entertainment

7.1

Boarding

7.7

Food

6.6

Crew

8.1

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

Find useful and relevant information for your journey from Sofia to Pennsylvania. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Sofia to Pennsylvania?

    Located just 4.2 mi from the city center, Sofia (SOF) is the airport most travelers will use when flying to Pennsylvania from Sofia.

  • How long is the flight from Sofia to Pennsylvania?

    KLM, LOT, and Lufthansa can get you from Sofia to Pennsylvania in just under 14h 55m. Your travel time can differ by up to 18h 05m. There are 4721 mi between Sofia and Pennsylvania. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Sofia to Pennsylvania one-way?

    One-way options have recently been found by users for as low as $400 on British Airways. Other airlines that offer cheap prices include Lufthansa from $723 and Air Canada from $755 one-way.

  • What are the most popular routes from Sofia to Pennsylvania?

    The most popular flight routes from Sofia to Pennsylvania are Sofia - New York John F Kennedy Intl, Sofia - Newark and Sofia - New York LaGuardia.

  • Can I find deals for flights from Sofia to Pennsylvania that include hotel bookings?

    Yes. In addition to deals on Sofia to Pennsylvania flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sofia to Pennsylvania?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sofia to Pennsylvania.

  • Can I find deals for business class flights from Sofia to Pennsylvania?

    Yes. Cheapflights offers flight deals from Sofia to Pennsylvania by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Sofia to Pennsylvania?

    Currently, December is the cheapest month in which you can book a flight from Sofia to Pennsylvania (average of $574). Flying from Sofia to Pennsylvania in November is currently the most expensive (average of $986). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Sofia to Pennsylvania

See prices for flight routes from nearby airports that may be better suited for you.
Sofia to John F Kennedy Intl flights
Sofia to Newark flights
Sofia to LaGuardia flights
Sofia to O'Hare Intl flights
Sofia to Los Angeles flights
Sofia to Miami flights
Sofia to Boston flights
Sofia to Dallas/Fort Worth flights
Sofia to San Francisco flights
Sofia to Orlando flights
Sofia to Hobby flights
Sofia to Philadelphia flights
Sofia to Ontario flights
Sofia to Seattle flights
Sofia to George Bush Intcntl flights
Sofia to Tampa flights
Sofia to Dulles Intl flights
Sofia to Fort Lauderdale flights
Sofia to West Palm Beach flights
Sofia to Las Vegas flights
Sofia to Baltimore flights
Sofia to Midway flights
Sofia to Santa Ana flights
Sofia to Denver flights
Sofia to Minneapolis flights
Sofia to Honolulu flights
Sofia to Norfolk flights
Sofia to Buffalo flights
Sofia to Portland flights
Sofia to Charlotte flights
Sofia to Detroit flights
Sofia to Indianapolis flights
Sofia to Richmond flights
Sofia to Raleigh flights
Sofia to San Jose flights
Sofia to Tulsa flights
Sofia to Fayetteville flights
Sofia to Providence flights
Sofia to Oakland flights
Sofia to Kailua-Kona flights

Top 2 airlines flying from Sofia to Pennsylvania

Discover the top 2 airlines that operate flights from Sofia to Pennsylvania. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated noviembre 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$588Average$730FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$636Average$775FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.