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$42+ Cheap flights from Bucharest (BUH) 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 6/16. Fares are subject to change and may not be available on all flights or dates of travel.
BUH — SOF
Jun 20 — Jun 271
Sat 6/20
Sat 6/27
1 adult, Economy
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Cheap flight deals from Bucharest to Sofia

Cheapest flights from Bucharest to Sofia
Explore the most affordable flight options available from Bucharest to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 21, 2026.

This Mytrip deal was found by Cheapflights users on 5/19. 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 6/1610:00 pm
OTP
-
SOF
1 stop13h 10m
Multiple Airlines
Tue 6/236:30 am
SOF
-
OTP
1 stop7h 15m
Multiple Airlines
Deal found 5/19$93
This Mytrip deal was found by Cheapflights users on 5/18. 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 6/1510:35 pm
OTP
-
SOF
1 stop12h 35m
Multiple Airlines
Wed 6/176:30 am
SOF
-
OTP
1 stop12h 55m
Multiple Airlines
Deal found 5/18$94
This Mytrip deal was found by Cheapflights users on 5/17. 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.
Sat 6/2010:00 pm
OTP
-
SOF
1 stop13h 10m
Multiple Airlines
Mon 6/229:05 pm
SOF
-
OTP
1 stop16h 00m
Multiple Airlines
Deal found 5/17$103
This Mytrip deal was found by Cheapflights users on 5/19. 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 6/187:35 pm
OTP
-
SOF
1 stop15h 35m
Multiple Airlines
Mon 6/226:30 am
SOF
-
OTP
1 stop6h 35m
Multiple Airlines
Deal found 5/19$106
This Mytrip deal was found by Cheapflights users on 5/16. 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.
Sat 6/1310:00 pm
OTP
-
SOF
1 stop13h 10m
Multiple Airlines
Sat 6/206:30 pm
SOF
-
OTP
1 stop15h 10m
Multiple Airlines
Deal found 5/16$108
This Mytrip deal was found by Cheapflights users on 5/20. 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.
Fri 6/269:30 pm
OTP
-
SOF
1 stop13h 40m
Multiple Airlines
Mon 6/296:30 am
SOF
-
OTP
1 stop6h 35m
Multiple Airlines
Deal found 5/20$110
This Mytrip deal was found by Cheapflights users on 5/20. 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 6/257:35 pm
OTP
-
SOF
1 stop14h 55m
Ryanair
Fri 6/264:10 pm
SOF
-
OTP
1 stop7h 00m
Ryanair
Deal found 5/20$112
This Mytrip deal was found by Cheapflights users on 5/16. 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.
Thu 6/47:35 pm
OTP
-
SOF
1 stop14h 55m
Ryanair
Sat 6/611:35 pm
SOF
-
OTP
1 stop14h 00m
Ryanair
Deal found 5/16$121
This Mytrip deal was found by Cheapflights users on 5/16. 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.
Thu 6/47:35 pm
OTP
-
SOF
1 stop15h 35m
Multiple Airlines
Sat 6/69:00 pm
SOF
-
OTP
2 stops11h 55m
Multiple Airlines
Deal found 5/16$128

Find flight deals from Bucharest to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from Bucharest (BUH) to Sofia (SOF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$93
(Mytrip)

One-way from

$42
(Kiwi.com)

Popular in

September

Cheapest in

November

Average price

$226

Good one-way deal

$125 or less
Provider with most accurate pricing for Bucharest (BUH)-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bucharest (BUH)-Sofia flights.
Search Deals
From Bucharest (BUH) to Sofia
Search Deals
One-way flight from Bucharest (BUH) to Sofia
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a one-way flight from Bucharest (BUH) to Sofia.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Bucharest 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 May 21, 2026.
Use the filters below to find and compare flights from Bucharest to Sofia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BucharestSofia

OTP - SOF

OTPSOF

Bucharest Otopeni Intl

Sat 6/20

10:00 pm-11:10 am

1 stop13h 10m

Sofia

Mon 6/22

9:05 pm-1:05 pm

1 stop16h 00m

$103

BucharestSofia

OTP - SOF

OTPSOF

Bucharest Otopeni Intl

Fri 6/26

9:30 pm-11:10 am

1 stop13h 40m

Sofia

Mon 6/29

5:45 am-9:20 pm

2 stops15h 35m

$129

BucharestSofia

OTP - SOF

OTPSOF

Bucharest Otopeni Intl

Mon 7/6

8:00 pm-11:30 am

1 stop15h 30m

Sofia

Mon 7/13

4:40 pm-10:10 pm

1 stop5h 30m

$133

BucharestSofia

OTP - SOF

OTPSOF

Bucharest Otopeni Intl

Sat 7/4

10:00 pm-9:30 am

1 stop11h 30m

Sofia

Mon 7/6

1:00 pm-2:05 pm

Nonstop1h 05m

$159

BucharestSofia

OTP - SOF

OTPSOF

Bucharest Otopeni Intl

Sat 6/13

8:20 am-9:35 am

Nonstop1h 15m

Sofia

Sat 6/20

6:30 pm-9:40 am

1 stop15h 10m

$162
Quickest round-trip

BucharestSofia

OTP - SOF

OTPSOF

Bucharest Otopeni Intl

Fri 6/26

6:50 pm-8:05 pm

Nonstop1h 15m

Sofia

Mon 6/29

1:00 pm-2:05 pm

Nonstop1h 05m

$173

BucharestSofia

OTP - SOF

OTPSOF

Bucharest Otopeni Intl

Mon 9/21

10:35 pm-11:10 am

1 stop12h 35m

Sofia

Fri 9/25

2:25 pm-2:05 pm

2 stops23h 40m

$186

BucharestSofia

OTP - SOF

OTPSOF

Bucharest Otopeni Intl

Mon 6/15

10:35 pm-11:10 am

1 stop12h 35m

Sofia

Wed 6/17

11:20 am-12:25 pm

Nonstop1h 05m

$189

BucharestSofia

OTP - SOF

OTPSOF

Bucharest Otopeni Intl

Thu 6/4

7:35 pm-11:10 am

1 stop15h 35m

Sofia

Sat 6/6

10:05 am-11:10 am

Nonstop1h 05m

$218
Cheapest one-way

BucharestSofia

OTP - SOF

OTPSOF

Bucharest Otopeni Intl

Tue 8/11

7:40 am-7:30 pm

1 stop11h 50m

$64

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/16

Showing 1-10 of 19 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on Bucharest-Sofia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Bucharest-Sofia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Bucharest-Sofia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Bucharest-Sofia flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Bucharest-Sofia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Bucharest to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia from Bucharest 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 Bucharest to Sofia

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

Currently, November is the cheapest month in which you can book a flight from Bucharest to Sofia (average of $59). Flying from Bucharest to Sofia in July is currently the most expensive (average of $265). 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 BUH to SOF?

Find hourly flight availability from Bucharest 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 May 21, 2026.

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

How much does it cost to fly round-trip from Bucharest to Sofia?

How often are flights from Bucharest to Sofia delayed?

About 12% of weekly flights between Bucharest and Sofia have experienced delays in the past year, with the average delay time being 102 minutes.

What is the most punctual flight time for Bucharest to Sofia flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Bucharest to Sofia flights?

Over the last year, Aruba Airlines have had the lowest number of delays on this route, with just 7% of flights being delayed.

Related info for your journey

Find useful and relevant information for your journey from Bucharest 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 Bucharest?

    Most people fly into Sofia (SOF) if they book a flight to Sofia from Bucharest. On average, Sofia has 1 inbound flight from Bucharest per day from 0 airlines. Sofia is conveniently located just 4.2 mi from Sofia’s city center.

  • How long is the flight from Bucharest to Sofia?

    For as low as $112, Ryanair can have you in Sofia from Bucharest in 14h 55m. There are 187 mi between Bucharest and Sofia.

  • What are the most reliable airlines from Bucharest to Sofia?

    The top 3 most reliable airlines when flying from Bucharest to Sofia are Air France (86%), Bulgaria Air (86%) and TAROM (86%).

  • What are the cheapest flights from Bucharest to Sofia?

    On average you can expect to pay $167 for a flight from Bucharest to Sofia. The cheapest flight overall is $103 while the most popular route, (Bucharest Otopeni Intl - Sofia) is currently priced at $129.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Bucharest to Sofia (average of $59). Flying from Bucharest to Sofia in July is currently the most expensive (average of $265). 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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