Sofia

$186+ Cheap flights from the United States to Sofia (SOF)

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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SOF
Nov 15 — Nov 221
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Cheap flight deals from USA to Sofia

Keep the following information in mind while searching for USA to Sofia flight deals. Data was last updated October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$351
(Kiwi.com)

One-way from

$186
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$718
Provider with most accurate pricing for New York (NYC)-Sofia flight deals.
Provider most trusted by Cheapflights users for New York (NYC)-Sofia flights.
From USA to Sofia
One-way flight from USA to Sofia
Highest demand for flights based on searches. 5% potential increase in price ($41 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
Average for round-trip flights in October 2025

Find flight deals from USA to Sofia

Cheapest flights from USA to Sofia
Explore the most affordable flight options available from USA to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/14. 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.
Tue 11/44:06 pmEWR - SOF
2 stops12h 44mAustrian Airlines
Tue 11/1812:35 pmSOF - EWR
1 stop32h 20mAustrian Airlines
Deal found 10/14$326
This Kiwi.com deal was found by Cheapflights users on 10/16. 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.
Mon 12/18:40 pmBOS - SOF
1 stop14h 40mLufthansa
Thu 2/262:00 pmSOF - BOS
1 stop11h 35mLufthansa
Deal found 10/16$351
This Kiwi.com deal was found by Cheapflights users on 10/15. 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.
Wed 11/55:55 pmEWR - SOF
1 stop10h 55mAustrian Airlines
Wed 11/197:55 amSOF - EWR
1 stop13h 00mAustrian Airlines
Deal found 10/15$355
This Mytrip deal was found by Cheapflights users on 10/14. 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.
Wed 11/125:30 amBOS - SOF
2 stops26h 45mMultiple Airlines
Wed 11/196:05 amSOF - BOS
2 stops34h 27mMultiple Airlines
Deal found 10/14$364
This Mytrip deal was found by Cheapflights users on 10/16. 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.
Mon 12/15:30 amBOS - SOF
2 stops29h 50mMultiple Airlines
Mon 12/86:45 pmSOF - BOS
1 stop26h 20mMultiple Airlines
Deal found 10/16$365
This Mytrip deal was found by Cheapflights users on 10/15. 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.
Wed 11/511:05 amEWR - SOF
2 stops24h 15mMultiple Airlines
Wed 11/197:55 amSOF - EWR
1 stop13h 00mMultiple Airlines
Deal found 10/15$370
This Mytrip deal was found by Cheapflights users on 10/15. 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.
Mon 10/279:50 pmEWR - SOF
1 stop14h 30mMultiple Airlines
Wed 11/126:10 amSOF - EWR
2 stops15h 42mMultiple Airlines
Deal found 10/15$372
This Kiwi.com deal was found by Cheapflights users on 10/16. 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.
Mon 12/110:10 pmBOS - SOF
2 stops13h 10mMultiple Airlines
Thu 2/262:00 pmSOF - BOS
1 stop11h 35mMultiple Airlines
Deal found 10/16$375
This Mytrip deal was found by Cheapflights users on 10/15. 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.
Wed 11/54:35 pmBOS - SOF
2 stops18h 45mMultiple Airlines
Wed 11/196:05 amSOF - BOS
1 stop19h 30mMultiple Airlines
Deal found 10/15$377
This CrystalTravel deal was found by Cheapflights users on 10/15. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/188:50 pmEWR - SOF
1 stop14h 30mMultiple Airlines
Wed 12/37:55 amSOF - EWR
1 stop13h 00mMultiple Airlines
Deal found 10/15$378
This Mytrip deal was found by Cheapflights users on 10/14. 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.
Tue 11/45:55 pmEWR - SOF
1 stop17h 05mMultiple Airlines
Tue 11/186:00 amSOF - EWR
2 stops21h 37mMultiple Airlines
Deal found 10/14$384
This Mytrip deal was found by Cheapflights users on 10/14. 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.
Wed 12/36:55 amEWR - SOF
2 stops28h 25mMultiple Airlines
Wed 12/172:00 pmSOF - EWR
2 stops37h 30mMultiple Airlines
Deal found 10/14$385

Cheapflights Fare Finder

 
Customize your flight search to find flights from USA to Sofia 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 October 16, 2025.
Use the filters below to find and compare flights from the United States to Sofia that are best for you.

Fly from

USA

Fly to

Sofia

Route

Depart

Return

Price

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 4/14

3:40 pm-11:40 am

2 stops13h 00m

Sofia

Tue 4/28

8:00 am-7:12 pm

2 stops18h 12m

$369

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 12/1

5:30 am-6:20 pm

2 stops29h 50m

Sofia

Mon 12/8

1:55 pm-8:20 pm

2 stops37h 25m

$376

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 12/1

8:40 pm-6:20 pm

1 stop14h 40m

Sofia

Tue 2/24

7:55 am-2:05 pm

1 stop13h 10m

$392

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 11/4

8:40 pm-6:20 pm

1 stop14h 40m

Sofia

Mon 1/19

7:05 pm-6:35 pm

1 stop30h 30m

$394

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 12/1

8:40 pm-6:20 pm

1 stop14h 40m

Sofia

Wed 2/25

2:00 pm-6:35 pm

1 stop11h 35m

$394

NewarkSofia

EWR - SOF

EWRSOF

Newark

Sun 11/9

8:50 pm-6:20 pm

1 stop14h 30m

Sofia

Mon 11/24

12:35 pm-1:55 pm

1 stop32h 20m

$394

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 12/2

5:30 am-11:50 am

2 stops23h 20m

Sofia

Thu 2/26

6:05 am-6:35 pm

1 stop19h 30m

$404

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 11/4

5:09 pm-6:20 pm

2 stops18h 11m

Sofia

Tue 11/18

6:00 am-4:47 pm

2 stops17h 47m

$405

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 12/2

1:00 pm-6:20 pm

2 stops22h 20m

Sofia

Tue 2/24

6:00 am-7:42 pm

2 stops20h 42m

$407

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 12/1

10:10 pm-10:45 pm

2 stops17h 35m

Sofia

Wed 2/25

2:00 pm-6:35 pm

1 stop11h 35m

$414

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

Showing 1-10 of 60 results
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Best time to book a flight from USA to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia from USA 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 the United States to Sofia

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

Currently, October is the cheapest month in which you can book a flight from USA to Sofia (average of $214). Flying from USA to Sofia in May is currently the most expensive (average of $581). 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 US to SOF?

Find hourly flight availability from USA to Sofia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 16, 2025.

It’s optimal to fly from USA to Sofia in the evening. By choosing this option you can save up to 10% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from USA to Sofia?

Use this chart to determine the cheapest time to fly round-trip from USA to Sofia. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their USA to Sofia flight should consider departing on Sunday at noon when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for theUnited States to Sofia flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your theUnited States to Sofia trip
Airlines
Turkish Airlines

Turkish Airlines Economy offers a travel set with sleep mask, ear plugs, and toiletries on flights over five hours.


Turkish Airlines Business Class features lie-flat seats, Ferragamo travel sets, and Denon noise-canceling headphones.

United Airlines

United's Polaris Business Class offers lie-flat seats, Saks Fifth Avenue bedding, and upscale amenity kits.


United's Premium Plus offers extra legroom, upgraded meals, and two checked bags on international routes.

Our travel experts
Jessica Macdonald

Jessica Macdonald

Expert on Turkish Airlines

Jessica Macdonald

Jessica Macdonald

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has traveled to more than 50 countries across six continents.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more

Reviews of airlines servicing Sofia

Get insights into the airlines that provide service to Sofia. 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 Sofia. Reviews last updated October 16, 2025.
Peruse reviews from past customers who have flown with LOT, Austrian Airlines, and United Airlines from the United States to Sofia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.2

Entertainment

6.9

Overall

7.6

Comfort

7.5

Food

7.1

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Rami,Sep 2025

LAX - WAW

The second leg. Very tight seats No WiFi on both flights

Crew

8.2

Entertainment

6.9

Overall

7.6

Comfort

7.5

Food

7.1

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Rami,Sep 2025

LAX - WAW

The second leg. Very tight seats No WiFi on both flights

Crew

8.2

Entertainment

6.9

Overall

7.6

Comfort

7.5

Food

7.1

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Rami,Sep 2025

LAX - WAW

The second leg. Very tight seats No WiFi on both flights

Crew

8.2

Entertainment

6.9

Overall

7.6

Comfort

7.5

Food

7.1

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Rami,Sep 2025

LAX - WAW

The second leg. Very tight seats No WiFi on both flights

Crew

8.2

Entertainment

6.9

Overall

7.6

Comfort

7.5

Food

7.1

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Rami,Sep 2025

LAX - WAW

The second leg. Very tight seats No WiFi on both flights

Crew

8.2

Entertainment

6.9

Overall

7.6

Comfort

7.5

Food

7.1

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Rami,Sep 2025

LAX - WAW

The second leg. Very tight seats No WiFi on both flights

Related info for your journey

Find useful and relevant information for your journey from USA to Sofia. 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 into for flights to Sofia from United States?

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

  • How long is the flight from USA to Sofia?

    For as low as $459, United Airlines can have you in Sofia from USA in 14h 20m. Airlines will cover a distance of 4707 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is Lufthansa, with whom users have recently found tickets for as low as $357. However, be on the lookout for offers from Air Canada and Air Serbia, as they are both options that can get you from USA to Sofia for a low price.

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from USA to Sofia 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 USA to Sofia?

    Currently, October is the cheapest month in which you can book a flight from USA to Sofia (average of $214). Flying from USA to Sofia in May is currently the most expensive (average of $581). 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.

Top 10 airlines flying from USA to Sofia

Discover the top 10 airlines that operate flights from USA to Sofia. 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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$401Average$845FlexibilityNo cancel feeOn-time79%
Austrian AirlinesCheapest$405Average$866FlexibilityNo cancel feeOn-time78%
Air FranceCheapest$416Average$767FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$428Average$853FlexibilityNo cancel feeOn-time69%
KLMCheapest$430Average$824FlexibilityNo cancel feeOn-time75%
LOTCheapest$437Average$873FlexibilityNo cancel feeOn-time81%
LufthansaCheapest$464Average$933FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$489Average$737FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$492Average$840FlexibilityNo cancel feeOn-time70%
ITA AirwaysCheapest$505Average$1,063FlexibilityNo cancel feeOn-time81%

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