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$316+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — PHL
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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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 July 30, 2025.

Round-trip from

$496
(KLM)

One-way from

$316
(Kiwi.com)

Popular in

November

Cheapest in

March

Average price

$814
From Sofia to Pennsylvania
Search Deals
One-way flight from Sofia to Pennsylvania
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Highest demand for flights based on searches. 5% potential increase in price ($44 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 30, 2025.

This KLM deal was found by Cheapflights users on 7/30. 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.
Mon 9/227:00 amSOF - IAD
1 stop15h 35mMultiple Airlines
Fri 10/36:30 pmIAD - SOF
1 stop12h 30mMultiple Airlines
Deal found 7/30$496
This lastminute.com deal was found by Cheapflights users on 7/30. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/199:25 amSOF - IAD
1 stop17h 20mTurkish Airlines
Fri 10/241:30 pmIAD - SOF
1 stop18h 15mTurkish Airlines
Deal found 7/30$548
This Mytrip deal was found by Cheapflights users on 7/30. 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.
Thu 9/118:00 amSOF - EWR
3 stops38h 20mMultiple Airlines
Wed 9/2411:00 pmEWR - SOF
1 stop13h 05mMultiple Airlines
Deal found 7/30$572
This Air France deal was found by Cheapflights users on 7/30. 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.
Mon 9/227:00 amSOF - IAD
2 stops19h 37mAir France
Fri 10/31:00 pmIAD - SOF
2 stops18h 00mAir France
Deal found 7/30$573
This Booking.com deal was found by Cheapflights users on 7/29. 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.
Thu 9/116:15 amSOF - EWR
2 stops15h 35mAir Canada
Wed 9/242:34 pmEWR - SOF
2 stops20h 16mAir Canada
Deal found 7/29$577
This Lufthansa deal was found by Cheapflights users on 7/30. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/136:15 amSOF - EWR
1 stop14h 25mLufthansa
Mon 9/295:25 pmEWR - SOF
1 stop11h 35mLufthansa
Deal found 7/30$578
This United Airlines deal was found by Cheapflights users on 7/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/136:15 amSOF - EWR
2 stops15h 28mUnited Airlines
Sun 10/193:30 pmEWR - SOF
2 stops19h 20mUnited Airlines
Deal found 7/30$580
This United Airlines deal was found by Cheapflights users on 7/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/16:15 amSOF - IAD
2 stops21h 50mUnited Airlines
Wed 10/86:10 pmIAD - SOF
1 stop12h 05mUnited Airlines
Deal found 7/30$580
This oojo deal was found by Cheapflights users on 7/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/133:35 pmSOF - EWR
1 stop14h 00mTurkish Airlines
Sat 10/1812:30 amEWR - SOF
1 stop31h 15mTurkish Airlines
Deal found 7/30$581
This Lufthansa deal was found by Cheapflights users on 7/29. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:15 amSOF - PHL
1 stop16h 45mLufthansa
Mon 9/85:35 pmPHL - SOF
1 stop17h 15mLufthansa
Deal found 7/29$585
This British Airways deal was found by Cheapflights users on 7/30. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/118:00 pmSOF - DCA
2 stops30h 59mBritish Airways
Wed 8/207:20 pmDCA - SOF
2 stops35h 10mBritish Airways
Deal found 7/30$585
This Lufthansa deal was found by Cheapflights users on 7/30. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:15 amSOF - IAD
1 stop16h 35mLufthansa
Fri 12/56:00 pmIAD - SOF
1 stop12h 50mLufthansa
Deal found 7/30$586

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 July 30, 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

Mon 9/22

7:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Fri 10/3

6:30 pm-2:00 pm

1 stop12h 30m

$496

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Sun 10/19

9:25 am-7:45 pm

1 stop17h 20m

Washington, D.C. Dulles Intl

Fri 10/24

1:30 pm-2:45 pm

1 stop18h 15m

$548

SofiaNewark

SOF - EWR

SOFEWR

Sofia

Thu 9/11

8:00 am-3:20 pm

3 stops38h 20m

Newark

Wed 9/24

11:00 pm-7:05 pm

1 stop13h 05m

$572

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Mon 9/22

7:00 am-7:37 pm

2 stops19h 37m

Washington, D.C. Dulles Intl

Fri 10/3

1:00 pm-2:00 pm

2 stops18h 00m

$573

SofiaNewark

SOF - EWR

SOFEWR

Sofia

Thu 9/11

6:15 am-2:50 pm

2 stops15h 35m

Newark

Wed 9/24

2:34 pm-5:50 pm

2 stops20h 16m

$577

SofiaNewark

SOF - EWR

SOFEWR

Sofia

Sat 9/13

6:15 am-1:40 pm

1 stop14h 25m

Newark

Mon 9/29

5:25 pm-12:00 pm

1 stop11h 35m

$578

SofiaNewark

SOF - EWR

SOFEWR

Sofia

Mon 10/13

6:15 am-2:43 pm

2 stops15h 28m

Newark

Sun 10/19

3:30 pm-5:50 pm

2 stops19h 20m

$580

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Wed 10/1

6:15 am-9:05 pm

2 stops21h 50m

Washington, D.C. Dulles Intl

Wed 10/8

6:10 pm-1:15 pm

1 stop12h 05m

$580

SofiaNewark

SOF - EWR

SOFEWR

Sofia

Mon 10/13

3:35 pm-10:35 pm

1 stop14h 00m

Newark

Sat 10/18

12:30 am-2:45 pm

1 stop31h 15m

$581

SofiaWashington, D.C.

SOF - DCA

SOFDCA

Sofia

Mon 8/11

8:00 pm-7:59 pm

2 stops30h 59m

Washington, D.C. Reagan-National

Wed 8/20

7:20 pm-1:30 pm

2 stops35h 10m

$585

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 52 results
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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, August is the cheapest month in which you can book a flight from Sofia to Pennsylvania (average of $236). Flying from Sofia to Pennsylvania in March is currently the most expensive (average of $295). 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 July 30, 2025.

When flying from Sofia to Pennsylvania, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 July 30, 2025.
Get a feel of what it's like to fly with KLM, LOT, and Austrian Airlines 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.
KLM
7.8
Good
1,383 reviews

Boarding

7.8

Comfort

7.7

Food

7.3

Entertainment

7.1

Overall

7.8

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,383 reviews
KLM
7.8
Good
1,383 reviews

Boarding

7.8

Comfort

7.7

Food

7.3

Entertainment

7.1

Overall

7.8

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
LOT
7.6
Good
1,105 reviews
KLM
7.8
Good
1,383 reviews

Boarding

7.8

Comfort

7.7

Food

7.3

Entertainment

7.1

Overall

7.8

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Austrian Airlines
7.6
Good
823 reviews
KLM
7.8
Good
1,383 reviews

Boarding

7.8

Comfort

7.7

Food

7.3

Entertainment

7.1

Overall

7.8

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Air France
7.5
Good
1,465 reviews
KLM
7.8
Good
1,383 reviews

Boarding

7.8

Comfort

7.7

Food

7.3

Entertainment

7.1

Overall

7.8

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
SWISS
7.5
Good
1,686 reviews
KLM
7.8
Good
1,383 reviews

Boarding

7.8

Comfort

7.7

Food

7.3

Entertainment

7.1

Overall

7.8

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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.

  • 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 $551 on Air Serbia. Other airlines that offer cheap prices include Lufthansa from $571 and Austrian Airlines from $585 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 LaGuardia, Sofia - New York John F Kennedy Intl and Sofia - Newark.

  • 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, August is the cheapest month in which you can book a flight from Sofia to Pennsylvania (average of $236). Flying from Sofia to Pennsylvania in March is currently the most expensive (average of $295). 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

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Alternative routes for Sofia to Pennsylvania

See prices for flight routes from nearby airports that may be better suited for you.
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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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$588Average$767FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$636Average$773FlexibilityNo cancel feeOn-time76%

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