£52 Find Cheap Flights from Bulgaria to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Heathrow departing on 19/2. 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.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
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Cheap Flights from Bulgaria to Heathrow

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Bulgaria to Heathrow 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 Bulgaria to Heathrow

Wed, 19 Nov - Sat, 22 Nov
British Airways Logo
21:00 - 22:30SOF-LHR
3h 30mdirect
British Airways Logo
06:05 - 11:15LHR-SOF
3h 10mdirect
£105British Airways
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Mon, 27 Oct - Mon, 3 Nov
 Logo
17:25 - 18:55SOF-LHR
3h 30mdirect
 Logo
22:15 - 19:30LHR-SOF
19h 15m1 stop
Thu, 9 Oct - Sun, 12 Oct
Air Serbia Logo
16:05 - 12:30SOF-LHR
22h 25m1 stop
Air Serbia Logo
19:25 - 02:55LHR-SOF
5h 30m1 stop
£125Air Serbia
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Thu, 9 Oct - Sat, 18 Oct
Air Serbia Logo
16:05 - 12:30SOF-LHR
22h 25m1 stop
Air Serbia Logo
19:55 - 15:35LHR-SOF
17h 40m1 stop
£125Air Serbia
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Wed, 29 Oct - Wed, 5 Nov
British Airways Logo
21:00 - 22:30SOF-LHR
3h 30mdirect
British Airways Logo
14:55 - 20:10LHR-SOF
3h 15mdirect
£129British Airways
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Mon, 29 Sep - Tue, 7 Oct
LOT Logo
05:20 - 17:20SOF-LHR
14h 00m1 stop
LOT Logo
18:10 - 02:00LHR-SOF
5h 50m1 stop
£142LOT
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Tue, 14 Oct - Sat, 25 Oct
LOT Logo
18:40 - 22:00SOF-LHR
5h 20m1 stop
LOT Logo
18:10 - 14:50LHR-SOF
18h 40m1 stop
£145LOT
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Wed, 5 Nov - Tue, 18 Nov
Austrian Airlines Logo
16:00 - 21:40VAR-LHR
7h 40m1 stop
Austrian Airlines Logo
06:00 - 15:15LHR-VAR
7h 15m1 stop
£165Austrian Airlines
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Mon, 27 Oct - Mon, 3 Nov
Austrian Airlines Logo
20:50 - 18:40VAR-LHR
23h 50m1 stop
Austrian Airlines Logo
06:00 - 15:15LHR-VAR
7h 15m1 stop
£166Austrian Airlines
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Fri, 26 Dec - Mon, 5 Jan
Bulgaria Air Logo
15:25 - 16:55SOF-LHR
3h 30mdirect
Bulgaria Air Logo
20:50 - 01:50LHR-SOF
3h 00mdirect
£183Bulgaria Air
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Everything you should know

Top airlines
Bulgaria Air
Most flights • 5 per week
Bulgaria Air
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
November
Cheapest • 26% price drop
November
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
£105
Typical prices: £108-161
British Airways
Wed 19/11Sat 22/11
SOF - LHR • Direct
Cheapest one-way flight
£52
Typical prices: £58-128
Air Serbia
Thu 19/2
SOF - LHR • 1 stop
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Heathrow!
Booking Insights

KAYAK's insights & trends for flights to Heathrow

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to London Heathrow Airport, 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 to London Heathrow Airport is November, where tickets cost £130 on average for return flights. On the other hand, the most expensive months are August and June, where the average cost of tickets from Bulgaria is £203 and £201 respectively. For one-way flights, the best month to travel is November with an average price of £130.

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

Low seasonAugust
Cheapest flight£52
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly and prices are also 26% lower on average.
Flight from Sofia to London Heathrow Airport

FAQs - booking London Heathrow Airport flights

  • How far is London Heathrow Airport from central London?

    You’ll need to travel 14 miles to reach the London city centre from London Heathrow Airport.

  • How much is a flight to London?

    On average, a flight to London costs £139. The cheapest price found on KAYAK in the last 2 weeks cost £55 and departed from Sofia Airport.

  • What is the cheapest day to fly to London?

    Based on KAYAK data, the cheapest day to fly to London is Thursday where round-trip tickets can be as cheap as £115. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are £225 on average.

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

    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 to London Heathrow Airport.

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London Heathrow Airport 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 to London Heathrow Airport?

    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 to London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to London Heathrow Airport?

    The cheapest time of day to fly to London Heathrow Airport is generally at night, when round-trip flights cost £168 on average. The most expensive time of day to fly to London Heathrow Airport is generally in the afternoon, which is peak travel time and where the average cost of a ticket is £329.

Top tips for finding cheap flights to London Heathrow Airport

  • Looking for cheap airfare to London Heathrow Airport? 25% of our users found round-trip tickets to London Heathrow Airport for the following prices or less: Cheap flights to London Heathrow Airport from Sofia £95
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London Heathrow Airport flight deals.

Reviews of the top 3 airlines flying from Bulgaria to Heathrow

 
See real verified KAYAK customer reviews for airlines flying to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Bulgaria to London. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Heathrow? 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.
8.0
Bulgaria AirOverall score based on 59 reviews
8.1Boarding
7.7Comfort
7.0Entertainment
7.7Food
8.4Crew
Airline reviews

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

8.0 ExcellentNikola, Jun 2025SOF - 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 ….

Cons: "Staff seemed confused and would not let us seat at our assigned seats which we picked in order to accommodate our baby. Instead they put us in an even worse spot and decided to ignore the people that took out seats and left them be."
Cons: "Them actually refunding my flight when I couldn't legally travel due to COVID lockdowns."

Boarding was delayed for an unknown reason for more than an hour. While the airplane was at the gate, the boarding time was moved by 10-20 minutes every 15 minutes. No entertainment on the plane.

The flight itself was pleasant and on time. Crew was very good. However, breakfast food was barely acceptable. Unfortunately this satisfies the recent industry standards. I asked for a sandwich with ham (another choice was cheese), but received a sandwich with roast beef.

During the flight, the fleas biting me in the plane.

Delay rushed to the next plane and bags didn’t arrive in chicago

Boarding could've been improved a bit, the rest is excellent.

Agents helping disable person doesnt know connections to Poland and after 9 agents helping and 2hours ,we made it to proper terminal. Polish Dreamliner its Polish nightmare liner with so narrow seats and no room under front seat for bag and feet,in economy class.To upgrade, to higher standart cost an arm and leg ,even there are empty seats No good experience overall

The crew and flight were amazing . However , my bag’s locker got broken and no refund provided . Everything else was amazing except this bad incident that ruined my experience

The seats are small and the movie selection was disappointing. However, the food was excellent and the cabin crew was attentive and kind.

Bags lost no more to say, bad communication and no urgency to get it back to the hotel by the airline properly the worst airline I have used.

It was was okay but the seat was stiff and hard to sit on it!!

The flight was good. It arrived at Heathrow on time but then there was no transport to take us to the terminal. We sat on the plane for an hour waiting for a bus. I will avoid Heathrow if possible in future. The crew were very apologetic.

we had to walk up stairs to get into the plane--no jetways. Perhaps that's a problem not with the airline but with facilities at Heathrow, Glasgow, and Edinburgh. But it was inconvenient.

The seating has become ridiculous… like a contest to see how narrow and short they can be made- forcing anyone over 5’1 to pay more to not be twisting oneself into a pretzel. Really insane- would have thought BA was better than this. Frankly- it cancels out a lot of the positive aspects.

flight was delayed from BWI to London - missed my connecting flight & then connecting flight (also British Air) was delayed - food is awful, TV & movie selection is great

Super tight economy class. My knees were hitting the back of seat in front of me (I'm only 5'6"). My small backpack (sized according to their required dimensions) would not fit under the seat in front of me because there is a box (is that the life jacket?) in the way. Over all, extremely uncomfortable. I forgive the tasteless food, but the tight seating was torture

Excellent service by the flight crew, and the food was relatively very good compared to other airlines.

Flight was excellent, staff was great. My first time in first class and it was very relaxing and comfortable.

They can separate the young children from people who want to have a rest. It had lots of crying and loud noises from the children.

I had an awful experience with British Airways as they broke the handle of my checked in suitcase and when I went to complain they told me that this was not their responsibility. This has to be one horrible airline that does not take responsibility for the damage that they have created

Didn’t fly with them as someone had cancelled my flight

Travelling to a place near Heathrow?

Book flights to Heathrow if you plan to visit one of these locations
Gatwick
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Northampton
Slough
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Poole
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Everything you need to know for your flight to Heathrow

Information on the airport you'll fly into in London

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