Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Sofia from C$ 155

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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SOF
5 Aug — 12 Aug1
1 adult

Cheap flight deals from Heathrow to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) 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 31 July 2025.

Round-trip from

C$ 267

One-way from

C$ 155

Popular in

December

Cheapest in

November

Average price

C$ 487

Good one-way deal

C$ 238 or less
Air Serbia
  • Air Serbia
  • 10/9-16/9
  • 2 total stops
  • 46h 30m total
  • London to Sofia
Search Deals
Air Serbia
  • Air Serbia
  • 1/9
  • 1 total stop
  • 24h 05m total
  • London to Sofia
Search Deals
High demand for flights, 5% potential price rise
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals
Price to beat on a one-way flight from London Heathrow to Sofia.
Search Deals

Find flight deals from Heathrow to Sofia

Cheapest flights from Heathrow to Sofia
Explore the most affordable flight options available from Heathrow to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 July 2025.

Wed 10/91:30 p.m.LHR - SOF
1 stop24h 05mAir Serbia
Tue 16/94:05 p.m.SOF - LHR
1 stop22h 25mAir Serbia
Deal found 30/7C$ 267
Thu 30/1011:10 a.m.LHR - SOF
1 stop5h 10mLufthansa
Wed 5/117:05 p.m.SOF - LHR
1 stop5h 50mLufthansa
Deal found 31/7C$ 289
Tue 7/106:40 p.m.LHR - SOF
1 stop13h 25mSWISS
Tue 14/101:15 p.m.SOF - LHR
1 stop5h 10mSWISS
Deal found 31/7C$ 307
Mon 8/96:00 a.m.LHR - SOF
1 stop27h 40mAustrian Airlines
Sat 13/912:25 p.m.SOF - LHR
1 stop22h 20mAustrian Airlines
Deal found 31/7C$ 311

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow 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 629,999 searches. Data last updated 31 July 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Sofia that are best for you.

Fly from

Heathrow

Fly to

Sofia

Route

Depart

Return

Price

LondonSofia

LHR - SOF

LHRSOF

London Heathrow

Wed 10/9

1:30 p.m.-3:35 p.m.

1 stop24h 05m

Sofia

Tue 16/9

4:05 p.m.-12:30 p.m.

1 stop22h 25m

C$ 267

LondonSofia

LHR - SOF

LHRSOF

London Heathrow

Mon 12/1

11:10 a.m.-4:20 p.m.

Nonstop3h 10m

Sofia

Sat 17/1

12:05 p.m.-1:50 p.m.

Nonstop3h 45m

C$ 270

LondonSofia

LHR - SOF

LHRSOF

London Heathrow

Thu 30/10

11:10 a.m.-6:20 p.m.

1 stop5h 10m

Sofia

Wed 5/11

7:05 p.m.-10:55 p.m.

1 stop5h 50m

C$ 289

LondonSofia

LHR - SOF

LHRSOF

London Heathrow

Tue 7/10

6:40 p.m.-10:05 a.m.

1 stop13h 25m

Sofia

Tue 14/10

1:15 p.m.-4:25 p.m.

1 stop5h 10m

C$ 307

LondonSofia

LHR - SOF

LHRSOF

London Heathrow

Mon 8/9

6:00 a.m.-11:40 a.m.

1 stop27h 40m

Sofia

Sat 13/9

12:25 p.m.-8:45 a.m.

1 stop22h 20m

C$ 311

LondonSofia

LHR - SOF

LHRSOF

London Heathrow

Mon 15/9

6:00 a.m.-2:45 p.m.

1 stop6h 45m

Sofia

Mon 15/9

6:55 p.m.-9:40 p.m.

1 stop4h 45m

C$ 347

LondonSofia

LHR - SOF

LHRSOF

London Heathrow

Mon 1/9

1:30 p.m.-3:35 p.m.

1 stop24h 05m

C$ 155

LondonSofia

LHR - SOF

LHRSOF

London Heathrow

Fri 5/9

8:20 a.m.-1:30 p.m.

Nonstop3h 10m

C$ 183

LondonSofia

LHR - SOF

LHRSOF

London Heathrow

Wed 13/8

1:45 p.m.-11:00 p.m.

1 stop7h 15m

C$ 216

LondonSofia

LHR - SOF

LHRSOF

London Heathrow

Sun 10/8

7:00 p.m.-10:00 a.m.

1 stop13h 00m

C$ 219

Flights are sorted by cheapest round-trip flights first.

Deals found on 31/7

Showing 1-10 of 14 results
1
2

Best time to book a flight from Heathrow to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia from Heathrow 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 London Heathrow Airport to Sofia

How far ahead should I book a flight from London Heathrow Airport to Sofia?

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Sofia. Price data was last updated on 25 July 2025.

The price you pay for your flight from London Heathrow Airport to Sofia may vary depending on when you book. For the best chance of a lower fare, look to book 34 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from London Heathrow Airport to Sofia?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Sofia (average of C$ 813). Flying from London Heathrow Airport to Sofia in July is currently the most expensive (average of C$ 1,179). 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 LHR to SOF?

Find hourly flight availability from Heathrow 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 31 July 2025.

It’s typically best to fly out from London Heathrow Airport to Sofia in the morning. Doing so could potentially save you 22% on the flight price compared to flying at noon, which is usually more expensive.

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 31 July 2025.
See what other customers who have flown with Aegean Airlines,Austrian Airlines, andSWISS from London Heathrow Airport to Sofia have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aegean Airlines
8.2
Very good
781 reviews
Check prices

Food

7.4

Entertainment

7.0

Comfort

7.9

Boarding

7.8

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Aegean Airlines
8.2
Very good
781 reviews
Aegean Airlines
8.2
Very good
781 reviews
Check prices

Food

7.4

Entertainment

7.0

Comfort

7.9

Boarding

7.8

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Austrian Airlines
7.6
Good
823 reviews
Aegean Airlines
8.2
Very good
781 reviews
Check prices

Food

7.4

Entertainment

7.0

Comfort

7.9

Boarding

7.8

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
SWISS
7.5
Good
1,686 reviews
Aegean Airlines
8.2
Very good
781 reviews
Check prices

Food

7.4

Entertainment

7.0

Comfort

7.9

Boarding

7.8

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Lufthansa
6.8
Okay
7,275 reviews
Aegean Airlines
8.2
Very good
781 reviews
Check prices

Food

7.4

Entertainment

7.0

Comfort

7.9

Boarding

7.8

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
British Airways
6.6
Okay
7,222 reviews
Aegean Airlines
8.2
Very good
781 reviews
Check prices

Food

7.4

Entertainment

7.0

Comfort

7.9

Boarding

7.8

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you

Related info for your journey

Find useful and relevant information for your journey from Heathrow 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 London Heathrow?

    Most people fly into Sofia (SOF) if they book a flight to Sofia from London Heathrow. On average, Sofia has 0 inbound flights from London Heathrow per day from 0 airlines. Sofia is conveniently located just 6.7 km from Sofia’s city centre.

  • What are the cheapest airlines flying from London Heathrow Airport to Sofia round-trip?

    Flying on Air Serbia is currently your cheapest option to Sofia, with prices starting at C$ 267. Additional round-trip tickets that might be worth considering are offered by British Airways and Lufthansa, with the lowest prices starting at C$ 270 and C$ 289, respectively. Users have found that Air Serbia is 28% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from London Heathrow Airport to Sofia one-way?

    To fly one-way, consider booking your trip with Air Serbia, which is currently one of the cheapest options available, starting at C$ 155. British Airways flights start at C$ 183 while deals on Lufthansa start at C$ 216 one-way.

  • What are the most reliable airlines from London Heathrow Airport to Sofia?

    No one likes to see their flight delayed. When booking a flight from London Heathrow Airport to Sofia consider choosing Bulgaria Air (95%), American Airlines (69%) or British Airways (69%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from London Heathrow Airport to Sofia?

    While on average a flight from London Heathrow Airport to Sofia is generally C$ 238, our data shows the cheapest flight currently is C$ 238. When looking at the most popular route, (London Heathrow - Sofia), you can expect to pay C$ 451 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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 London Heathrow Airport to Sofia?

    Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Sofia (average of C$ 813). Flying from London Heathrow Airport to Sofia in July is currently the most expensive (average of C$ 1,179). 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.

Complete your trip

Complete your trip to Sofia by adding a car rental and/or hotel reservation to your travel itinerary.
Sofia car rentals
Sofia Airport car rentals

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Sofia?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Sofia. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Sofia?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Sofia.

Can Cheapflights find flights from Heathrow to Sofia with no change fees?

Yes! Cheapflights helps users easily find flights from Heathrow to Sofia with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to Sofia become cheaper?

Yes! Start tracking prices for Heathrow to Sofia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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.