£68 Find Cheap Flights from London Heathrow Airport to Bulgaria – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Bulgaria departing on 3/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Cheap Flights from Heathrow to Bulgaria

Cheapest return prices found by our users on KAYAK in the last 72 hours
Sofia
Sofiadirect£129
Burgas
Burgas1 stop£183
Varna
Varna1 stop£164
Sofia
Sofiadirect£129
Burgas
Burgas1 stop£183
Varna
Varna1 stop£164

Book Cheap Heathrow to Bulgaria Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Bulgaria that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Bulgaria

Fri, 13 Nov - Mon, 16 Nov
British Airways Logo
14:05 - 19:20
LHR
-
SOF
3h 15mdirect
British Airways Logo
17:15 - 18:45
SOF
-
LHR
3h 30mdirect
£129British Airways
Tue, 13 Oct - Wed, 21 Oct
LOT Logo
10:20 - 13:55
LHR
-
SOF
25h 35m
1 stop
LOT Logo
18:45 - 22:00
SOF
-
LHR
5h 15m
1 stop
£131LOT
Tue, 13 Oct - Wed, 21 Oct
LOT Logo
06:30 - 13:50
LHR
-
SOF
5h 20m
1 stop
LOT Logo
18:45 - 22:00
SOF
-
LHR
5h 15m
1 stop
£131LOT
Fri, 23 Oct - Fri, 6 Nov
Multiple Airlines Logo
20:50 - 13:15
LHR
-
SOF
14h 25m
1 stop
Multiple Airlines Logo
05:00 - 12:25
SOF
-
LHR
9h 25m
1 stop
£136Multiple Airlines
Wed, 23 Sep - Wed, 30 Sep
British Airways Logo
15:10 - 20:30
LHR
-
SOF
3h 20mdirect
British Airways Logo
21:25 - 22:45
SOF
-
LHR
3h 20mdirect
£141British Airways
Wed, 30 Sep - Wed, 14 Oct
Multiple Airlines Logo
09:55 - 09:45
LHR
-
SOF
21h 50m
1 stop
Multiple Airlines Logo
15:20 - 16:45
SOF
-
LHR
3h 25mdirect
£145Multiple Airlines
Mon, 7 Sep - Mon, 5 Oct
Lufthansa Logo
07:25 - 23:15
LHR
-
SOF
13h 50m
1 stop
Lufthansa Logo
19:25 - 22:40
SOF
-
LHR
5h 15m
1 stop
£158Lufthansa
Sat, 19 Sep - Wed, 30 Sep
Lufthansa Logo
07:25 - 18:40
LHR
-
SOF
9h 15m
1 stop
Lufthansa Logo
19:25 - 22:40
SOF
-
LHR
5h 15m
1 stop
£158Lufthansa
Wed, 9 Sep - Wed, 16 Sep
Bulgaria Air Logo
17:55 - 23:15
LHR
-
SOF
3h 20mdirect
Bulgaria Air Logo
15:20 - 16:45
SOF
-
LHR
3h 25mdirect
£164Bulgaria Air
Wed, 9 Sep - Wed, 16 Sep
Bulgaria Air Logo
17:55 - 23:15
LHR
-
SOF
3h 20mdirect
Bulgaria Air Logo
15:20 - 16:45
SOF
-
LHR
3h 25mdirect
£167Bulgaria Air
Booking Insights

KAYAK's insights & trends for Heathrow to Bulgaria flights

Get data-powered insights and trends into flights from Heathrow to Bulgaria to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest London Heathrow Airport to Bulgaria flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Bulgaria from London Heathrow Airport found in the last 5 days was to Sofia, at £161 return. The most popular route is from London Heathrow Airport (LHR) to Sofia (SOF), and the cheapest return airline ticket found on this route in the last 5 days was £161.

What is the cheapest time of day to fly to Bulgaria?

The average price for all round-trip flights from London Heathrow Airport to Bulgaria depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Bulgaria is generally at night, when retur flights cost £210 on average. Morning departures are around 1% more expensive than evening flights, on average. The most expensive time of day to fly to Bulgaria is generally in the morning, which is peak travel time and where the average cost of a ticket is £245.

Can I save money by flying with a stopover from London Heathrow Airport to Bulgaria?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 1 stop stopover the cheapest option at £307 on average.

What is the cheapest month to fly from London Heathrow Airport to Bulgaria?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Bulgaria, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London Heathrow Airport to Bulgaria is January, when tickets cost £131 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of return tickets is £286 and £260 respectively.

What’s the cheapest day of the week to fly from London Heathrow Airport to Bulgaria?

The average price of all round-trip flights from London Heathrow Airport to Bulgaria clicked on KAYAK for each day over the last 12 months.

When flying from London Heathrow Airport to Bulgaria, you should consider leaving on a Monday and avoid Sundays if you are looking for the best rates. For your return to London Heathrow Airport, you’ll find the best rates on Thursdays and the most expensive ones on Mondays.

How far in advance should I book a flight from London Heathrow Airport to Bulgaria?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London Heathrow Airport to Bulgaria, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from London Heathrow Airport to Bulgaria, you should book around 2 weeks before departure, which saves you about 29% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know - Cheap tickets from London Heathrow Airport to Bulgaria

Low season

October

Cheapest flight

£68
Best time to beat the crowds (8% less expensive on average)
Most popular time to fly (26% more expensive on average)
Flight from London Heathrow Airport to Sofia

FAQs - booking Bulgaria flights

  • How does KAYAK find such low prices on flights from London Heathrow Airport to Bulgaria?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Heathrow Airport to Bulgaria.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to Bulgaria?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London Heathrow Airport to Bulgaria is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport to Bulgaria?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from London Heathrow Airport to Bulgaria with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport to Bulgaria?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from London Heathrow Airport to Bulgaria up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many flights are there between London Heathrow Airport and Bulgaria per day?

    Each day, there are between 1 and 2 direct flights that take off from London Heathrow Airport and land in Bulgaria, with an average flight time of 3h 12m. The most common departure time is 08:00 and most flights take off in the morning, while the most flights land at Sofia. Each week, there are 9 flights. The most frequent day of departure is Monday, when 22% of all weekly flights depart. The fewest flights depart on a Saturday.

Reviews of the top 5 airlines flying from Heathrow to Bulgaria

 
Need help choosing which airline to fly with from Heathrow to Bulgaria? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
Bulgaria AirOverall score based on 60 reviews
8.4Boarding
7.2Entertainment
7.8Food
8.7Crew
8.1Comfort
Airline reviews

Bulgaria Air should stop using buses for boarding if possible. It is very inconvenient and delays the departure

8.0 ExcellentNikola, Jun 2025
SOF - AMS
Read more Bulgaria Air reviews

Bulgaria Air should stop using buses for boarding if possible. It is very inconvenient and delays the departure

Easy check in. Hot snack with wine if desired. Then chocolate, tea or coffee. Altogether excellent.

Seats are quite small, but due to the plane being empty we were aloud to switch seats to have more room

The water was handed out as we were entering the plane, instead of when we are set down and our hands are free of luggage. There was absolutely no food offered from Sofia to London, except a low quality chocolate, which was not delicious. The flight between London and Miami was ok, as far as service and food, but it was absolutely freezing, throughout the whole aircraft, especially in the back seats, I had to cover my head with a scarf, besides using the blanket and still I was feeling extremely uncomfortable. The passengers seating around me shared the same opinion. We did ask for something to be done about it. The gentleman did try to adjust it, but the effect last very short time, and towards the end of the flight it was extremely cold and blowing strong again ….

Boarding by bus - this is 2026! Luggage did not board the plane though we had over two hours between flights. After it was located it didn’t fly immediately but waited one or two flights until boarding to fly yo Belgrade.

The flight was delayed for 30 minutes with no apparent reason. There is no entertainment at all, and no USB or electric outlets for charging your phone or tablet.

Accessibility serious problems in Viena airport making it seriousely difficult in in-between gates and boarding travel. Pretens of breakfast and service care in the economy pathetic.

We had a wonderful experience overall. The only issue was check-in our luggage at the Split Airport counter. It was very confusing because we needed to pay for baggage.

We have travelled on 13 December with Austrian Airlines from Yangon through Bangkok and Vienna to Varna. The first flight operated by Thai Airlines was nice and comfortable. I wouldn’t say the same thing about the next two flights which were operated directly by the Austrian Airlines. During our flight from Bangkok to Vienna:  > The service was very poor – serving of food and drinks was disorganized, late and not combined, the stewards were walking back and forth without doing anything substantial for the passengers. Even the morning breakfast was very late with a cup of coffee almost while landing (after a reminding).  > The food itself was OK-ish but for a 12-hour flight, there were no snacks/bites in between dinner and breakfast as it is with the other airlines.  > The cutlery was wooden, most probably recycling, but very unpleasant to eat with.  > The stewards were not rude but not friendly and/or helpful  > And also, half of the passengers had travel sets, others did not. The flight from Vienna to Varna was another surprise: firstly, the flight was late and secondly, they were serving only water free, even the coffee was paid, so were the snacks, but we had to pay to reserve seats. The whole experience is as if it was a low-cost airline. All in all, I wouldn’t recommend using the services of Austrian Airlines: the ticket prizes are quite the same as of the other carriers flying to this destination and you would have much pleasant time.

Business class is not worth it. Not comfortable and old plane with no privacy or enough space unless you on the single seats

I paid for carry-on bag, but they did not let me take it on board, persuaded to check it in because the flight was full. I agreed to help them out, and they mixed up tag numbers and my bag got lost. I had very valuable things in there, and my whole vacation experience was ruined. I even asked the boarding assistant why the tag number was different from the assigned one, but they assured me it was alright and the bag will arrive to my destination. Nothing arrived of course. Incompetence of boarding assistants cost me the loss of all my things.

From all the segments I flew it was the only one I did not get the option to choose ni seat, I did not get the quality of seat I had paid for. Crew was nice, airplane was clean, but no food, only water and a small courtesy chocolate. Everything else you had to pay for.

the flight was canceled, and I had to stay more than six days at hotel . waiting . then I had to buy new ticket. really it was very bad experience, and I lost a lot of money and time , and your airline said sorry

The flight was late. We accommodated other missed flights, and the plane was full of people, without space to store carry-on luggage. They lost our checked luggage for the entire flight and delivered it after two days.

Flying business class saves you. Once you get out of the terminal and onto the plane, it’s fine. The traffic at the gate is a horror. No organization at all. The fact that Business class is promised early boarding is a myth.

Flight was delayed for a hour from Warsaw, not sure why. When we landed in Chicago, plane was still on the runway for about half a hour. Took a while to get off.

Crew was excellent. Business class was poor on the short flight and mediocre at best on the international flight.

Great service . Everyone is so polite and ready to help. I always was using Lufthansa but from now on I will use LOT. Thank you for your service.

Once again very friendly helpful staff A short flight but not only on time actually a bit early

The flight was delayed by an hour which caused me to lose my car rental in Vilnius

The flight was very bad, the food and the staff was very rude. My last time with them

LOT airlines wasn't the best. They had trouble with boarding and they didn't have my information on file the right way. They change last minute details without us knowing and everything was a HOT MESS. Lot airlines also lost my baggae which was the carseat and haven't responded to any of my emails.

The customer service and the flight experience were very good!

The plane was very comfortable, the seats were great for overnight flight. The bathrooms were spotless the entire flight

Flight map did not work. Crew was great, food was good, plane took off on time and landed early. That's all I can ask.

Paid for exit row at the back of the plane. Window seat with lots of leg space. Food was inedible (as usual). Brought my own.

Not what I expected for the last leg of a $5100 business class experience. Boarding was a nightmare. The flight was delayed and I had to keep checking my email to ensure I was at the right gate since the airline or the terminal had no clue until 15 mins prior to boarding. Food was gross, limited drink options.

Flights scheduled with impossible connections - Lufthansa apparently believes it takes 7mins to change terminals, go through passport control, re-clear security and walk 1.8kms…..and everything will work perfectly (which it never does at Frankfurt). No staff on hand to assist with transfers on delayed flights. No transfer guidance provided by app. No compensation offered for 6hr delay to connecting flight.

Crew were friendly and very helpful Plane was clean and the legroom is standard. Overall a good flight, no complaints.

I did not like that they failed to put my luggage on my connecting flight to Athens. I was promised it would be located and delivered within 2 days but later told there was no information on its location. This caused me to have unplanned for expenses because I then had to purchase new clothing to wear on my vacation. I did not receive my luggage until my return flight home. I will not be traveling with them again.

No internet, very narrow seats insufficient room for three passengers with encroachment.

Other than problems with checking in and uploading passport info everything was great. It would be nice to be able to manually input passport info. Often while traveling the bandwidth has problems uploading pictures

Give at least coffee or juice as it is an international flight.

Tiny, cramped seats with minimum leg room and hard armrests. Basic needs like a seat and luggage came with an additional charge. Budget airline amenities with premium airlune cost. I won't use this airline again.

Not good because in this cancelled and then rebooked flight BA put me and my husband in both middle seats when we were originally seated together in original flight and i was in aisle. I hate sitting in the middle. BA food needs to be better. It was just ok. Thanks though to screw and everyone one for safe flight

Crew members were thorough in checking seatbelts and whatnot which makes me feel cared for because passenger safety is a main concern.

I was sent an email that said my card payment was not verified. When I spoke to an agent , he said my card was not verified and the flight I thought I had to booked was no longer available so I booked another flight on another airline(United). Later I got flight updates , etc., concerning my supposed first flight. So if I was charged for this flight on British Airways/American airlines, I need a refund.

The crew made it a great flight. They were friendly and attentive. They made me want to fly British Airways again.

BA has not been handling priority luggage with any special priority. This time our luggage was distinctly very slow to arrive, well after the first half of items to arrive. Business class flights cost a lot and it would be nice to have that reflected in the speed of baggage handling! (I note that this has worsened in our long experience of BA.) On a different note, we spent 2.5 hours on the plane after landing because of an airport mishap at Boston Logan. The pilot provided reasonably frequent update but more could have been done to ensure passenger comfort, such as more beverage and maybe snack services.

The onboard service makes it extremely difficult and slow to go to the toilet

The boarding process was a disaster. No one respects the boarding groups—tired old aeroplane. There are no sockets to charge phones. The cushion seats are ancient and hurts back and gluts

Amazing crew - they were exceptionally nice. From ground staff to the plane

Small overcrowded flight with limited overhead storage bins. The last row 30 has no windows. The aircraft has no entertainment system. The flight is 3+ hrs and is not a low-cost, but the free snack is a laughable size: a SINGLE bite soft cake/pie.

The seats were quite uncomfortable. I felt like I was leaning forward the entire time, which was quite bad for my neck.

Everything you need to know for your flight from Heathrow to Bulgaria

Information on your arrival and departure airports