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Find cheap flights from Southeast Europe to London Heathrow Airport from £43

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 9/7. 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
0 bags
Fri 7/6
Fri 14/6

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Good to know - Cheap tickets from Southeast Europe to London Heathrow Airport

Low season

February

High season

December

Cheapest flight

£43
Best time to beat the crowds (26% less expensive on average)
Most popular time to fly and prices are also 1% lower on average.
Flight from Belgrade to London Heathrow Airport

FAQs for booking Southeast Europe to London Heathrow Airport flights

  • How does KAYAK find such low prices on flights from Southeast Europe 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 from Southeast Europe to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Southeast Europe 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 from Southeast Europe 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 Southeast Europe 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 to Southeast Europe with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Southeast Europe 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 from Southeast Europe up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly direct from Southeast Europe to London Heathrow Airport?

Find which airlines fly direct from Southeast Europe to Heathrow, which days they fly and book direct flights.

Direct departures

Southeast Europe to London Heathrow

Monday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Tuesday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Wednesday

ANA, AccesRail, Aegean Airlines, +91 more

ANA, AccesRail, +92 more

Thursday

ANA, AccesRail, Aegean Airlines, +86 more

ANA, AccesRail, +87 more

Friday

ANA, AccesRail, Aegean Airlines, +93 more

ANA, AccesRail, +94 more

Saturday

ANA, AccesRail, Aegean Airlines, +88 more

ANA, AccesRail, +89 more

Sunday

ANA, AccesRail, Aegean Airlines, +91 more

ANA, AccesRail, +92 more

See more direct flights

Direct returns

London Heathrow to Southeast Europe

Monday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Tuesday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Wednesday

ANA, AccesRail, Aegean Airlines, +91 more

ANA, AccesRail, +92 more

Thursday

ANA, AccesRail, Aegean Airlines, +86 more

ANA, AccesRail, +87 more

Friday

ANA, AccesRail, Aegean Airlines, +93 more

ANA, AccesRail, +94 more

Saturday

ANA, AccesRail, Aegean Airlines, +88 more

ANA, AccesRail, +89 more

Sunday

ANA, AccesRail, Aegean Airlines, +91 more

ANA, AccesRail, +92 more

See more direct flights
See more direct flights

Top 5 airlines serving from Southeast Europe to Heathrow

 
Need help choosing which airline to fly with from Southeast Europe 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
Aegean AirlinesOverall score based on 902 reviews
7.9Comfort
7.1Entertainment
7.5Food
8.5Crew
7.8Boarding
Airline reviews

The only issue was a short window to make my connecting flight, and nobody to assist me in finding my way to the next gate.

10.0 ExcellentDave, Apr 2024BUD - ATH
Read more about Aegean Airlines reviews

The only issue was a short window to make my connecting flight, and nobody to assist me in finding my way to the next gate.

This is my first time flying Aegean Air and I had a great first time experience. I will fly this airline again.

Η πτήση εμφάνισε μεγάλη καθυστέρηση και λαμβάνοντας υπόψη το γεγονός ότι επρόκειτο για την τελευταία βραδυνή πτήση, ήταν ιδιαίτερα κουραστικό για τους επιβαίνοντες.

Very bad experience during the boarding, the Aegean employees were very rude, and impatient with the passengers

Θα πρέπει να υπάρχει εστίαση στη γρήγορη και εύκολη επιβίβαση/αποβίβαση

Flight was late, boarding totally chaotic, seat uncomfortable, food good, attendants and pilots good.

aegean took off late, which made it impossible for us to make the next flight on air canada, we all ran to the terminal, the plane was still there but the air canada folks wouldn't let us board because they said the door was already closed. they told us we had to go all the way back to aegean desk to arrange another flight.

Priority transfer bag left behind in Amsterdam causing extreme difficulty and inconvenience on arrival destination Athens

Our flight was canceled after we paid in full and began making further plans. we were refunded only around75% of what we paid! I strongly recommend against ordering Aegaen Airlines!

The food sandwich was OKAY for such a short flight. Crew were very caring. They helped my wife who has walking issues. They carried her bag and held her arm to help prevent tripping. All in all it was a professional effort on the part of all crew members. I highly recommend this crew of Aegean Airlines.

Upgrade to business was great. The crew was nice. Disembarkation in Bucharest was very slow through the rear door to a bus to get to the terminal. The business lounge was not clean with bugs running on the floor.

I rated food and entertainment with the lower score because I did not have N/A. No food and entertainment from Bucharest to London.

Poor service ! Water need to be free and a little snack for 3.5 hour during the flight. Tarom company need to take lessons from Turkish Airlines.

There was extreme turbulence for 10-15 minutes a bit after takeoff, which of course is no one's fault. This was a short regional flight with no amenities except water. Departure and arrival wete close ro on-time. The Suceava airport is very small but pleasant and efficient. My baggage all the way from Washington DC, checked through Paris and Bucharest, arrived without a hitch. There was really nothing to complain about except a regrettable 5+-hour layover in Bucharest.

This experience was atypical. The flight left three hours late because of engine technical issues, which meant a very long wait. Unrealistic announcements made it worse by discoursgong leavimg for water, reatrrom, etc. But the crew did its best and apart from the delay, it was not a bad flight. Good entertainment and drink service.In the end, I made my connection anyway.

Pros: "The crew and the flight from Bucharest to Istanbul"
Cons: "The airplane from Athens to Bucharest wa terrible, very old, smelling bad, not maintained, and noisy"
Cons: "Boarding... always boarding being confuse! Tarom flights are... difficult to understand why this happens"
Pros: "Comfortable’ish seats, left on time... arrived early!"
Cons: "Boarding is, continues to be, a big issue! Not organized, everyone trying to jump ahead of others..."
Pros: "The check in was very rude and moody for no reason. He was not accommodating with the seating arrangement"
Cons: "Ask the staff not to be so moody for no reason at all."
Pros: "The crew was amazing. They answered to my requests politely and helpfully"
Cons: "Some of the plates/tables are not rigid/straight horizontal. Should be checked and readjusted"

Another 35 min delay landing No apology no communication or acknowledgment about this

Try to humanize onboarding and take AI out. It's embarrassing and useless

Overall good experience. Polite crew. Good foodandentertainment. Seats are small and bit congested though.

I ended up buying (for $340) "extra space" seats because I my flying partner was given a STY boarding pass, leading me to conclude that she was on standby and that we had to buy seats on the flight. I later learned that the flight was not sold out and that we could have gotten on as usual. To be honest, I felt swindled.

I'm Canadian. I have the unfortunate experience of pretty not having the choice to fly with them. THEY ARE TERRIBLE.

The process overall was pretty seamless, and the crew were very friendly (especially Michael). Considering we booked expecting Lufthansa and the flight was operated by United, it was still a very good service and journey overall. The in-flight entertainment was great, with lots of quality options. One slight negative was that I had selected a vegetarian meal prior to flying, but received a vegan one. I think there should be more dietary options as it meant I missed out on some food that I would have preferred (and it seemed like the standard meals and snacks had a vegetarian option anyway). There was also a group of people who were moving around a lot and being generally disruptive at the quietest part of the flight, when the lights were off and most people were sleeping. I would have appreciated staff stepping in to encourage them to be mindful of others). Towards the end of the flight (which was very early in the morning in both time zones), the lights suddenly came on and breakfast was served. In my opinion, this was too early, and everyone was rudely awoken from sleep. After breakfast was cleared away, the lights went off again for about 45 minutes, allowing people to sleep some more. Then the lights came on again for landing. It seems like if they had served breakfast later, the lights on-lights off-lights on shenanigans could have been avoided, and people could have slept longer (and staff could have rested longer too).

You only get a chocolate square and small bottle of water.!

to be bussed around the airport, then have to sit on the plane for an hour whilst the plane was deiced not once, but twice, then to have to wait for a tug driver is unacceptable. The Captain was very good at communicating.

Terrible. This airline will cancel flights at very short notice.

No entertainment, no food or beverage included… Price like Lufthansa, “comfort and service” from Eurowings.

This was my connection flight that was moved time ahead for a almost entire day so I lost it and I had to purchase new ticket once I landed in Copenhagen since nobody wanted to take responsibility for moving flight in that way so it’s impossible to make it. Very poor job by Underpricer, Air Serbia and SAS.

I purchased an exit row seat and priority boarding, about 3 months in advance. Without any communication whatsoever, my seat was moved to row 2, when I checked my reservation 2-3 days before departure. As no exit row seats were available anymore, I selected a seat 1C. However, once at the airport, I was issued maybe the worst possible seat, 29E, middle seat, one row before the last. It is not worth my time to request the refund on the ancillary purchase, I am simply done flying with Air Serbia. Also there was no boarding process to speak of at all, or online check in.

Lacking online check in, had to wait an hour in order to check in on the counter even without language.

This flight was better, plane was newer and didn’t have broken parts. Flight crew was very attentive and friendly.

Seats are very small and uncomfortable so such a long flight. My tray table was broken and taped up. Flight attendant untaped it to put my tray on. I taped it back up when done. The armrest between seats was broken and metal exposed. I will not book Air Serbia again.

Our flight was delayed from 1st July to 2nd July. But I wasnt informed! Checked my emails,every detail but I was definitely not informed! I and my family went to the airport on 1st July and learned that rhe flight is delayed to 2nd July at the airport! I am going to complain about this. I had to stay ın Kraljevo one more night. Luckily we could find a room. What ıf We couldn't?

To be honest, it was a fair flight, nothing more, nothing less. Since the route is short, I can accept poor in-flight service. The Belgrade airport is currently undergoing extensive reconstruction, which may result in some minor disruptions, but progress is expected to be made within the foreseeable future.

Omg my flight was delayed from 4pm to 9:45 pm with no explanation- that is ridiculous

Very poor embarkation in Belgrade , employees not friendly, not well organized. The flight was delayed by over 2.5 hours and the employees at the air Serbia desk at Belgrade were unhelpful, disinterested and all appeared more concerned about their snack (all were munching something) than assisting passengers

They didnt let me do the check in online. That was terrible cause I was coming from another country,so I had to go oit the airport and go un again through controls. They Also made me pay more for my bag which was very light. And the personal was not so nice.

Lost our bags in Heathrow, We didn’t receive bags in Mallorca for 3 days, out of a 7 day cycling vacation. Really inconvenient and disappointing!

There's no inflight entertainment, plane was old, power USB didn't work

We missed the flight to Barcelona because the flight from Baltimore was delayed. We flew on Vueling VW6653. Our luggage didn’t arrive. Please help us get our luggage. We are staying at Hotel Gran Via in Barcelona

They allowed some guy to move seats after 3hours of him being next to someone very sick, There were several empty seats, but they moved him to mine. I find that incredibly inconsiderate and should not have been done.

Excellent. Very nice and comfortable business class. Only negative is that it was difficult to hear the pilot’s announcement.

Food not so good. Need more veggies and whole grain especially the late food. Couldn’t figure out how to use the entertainment system.

Check in was horrendous! Economy took 2 hours before seeing an agent. Business class was 0.5 - 1 hour.

The first class flight itself was first class, however getting to the airport and getting through the airport was agony. The BA flight sat on the taxiway for ages and caused us to miss our connecting flight which meant half a day lost. Our return flight on BA was cancelled so a dawn flight was made and we lost another half day. Goodby BA

In economy and food was ok, but with limited leg space (and I was in a 2 seat configuration) it was difficult to eat with a tiny seat tray. I spilt wine on my trousers. First time on British Air (I usually fly Turkish Air) and in a 777. Heathrow was pleasant but changing terminals awkward.

Starting with the flight Cairo to London the plain was so poor no entertainment at all uncomfortable seats although it’s 5 hours long,then an American airline plain took me from London to Miami it was a bad experience the crew most of flight time not available and they asked us to help our selves for any snacks if we need. From Miami to London actually was perfect flight with a huge plain and perfect crew but from London to Cairo was horrible plain with stiff fixed seats not movable no entertainment or wi fi very poor Menu which is unacceptable for a business class

Book cheap flights from Southeast Europe to London

Recent return flight deals

31/10Thu
1 stopAir Serbia
25h 55mZAG-LHR
3/11Sun
1 stopAir Serbia
20h 25mLHR-ZAG
£94
30/10Wed
1 stopAir Serbia
18h 35mZAG-LHR
3/11Sun
1 stopAir Serbia
27h 55mLHR-ZAG
£107
14/10Mon
directBritish Airways
3h 30mOTP-LHR
16/10Wed
directBritish Airways
3h 15mLHR-OTP
£120
9/7Tue
directBritish Airways
3h 00mBEG-LHR
14/7Sun
directBritish Airways
2h 45mLHR-BEG
£123
8/7Mon
1 stopLufthansa
5h 10mSOF-LHR
8/9Sun
1 stopLufthansa
4h 50mLHR-SOF
£146
4/6Tue
1 stopLufthansa
6h 30mBEG-LHR
18/6Tue
1 stopLufthansa
5h 25mLHR-BEG
£148
12/6Wed
directTAROM
3h 45mOTP-LHR
14/6Fri
directTAROM
3h 20mLHR-OTP
£152
17/6Mon
directTAROM
3h 45mOTP-LHR
21/6Fri
directTAROM
3h 20mLHR-OTP
£156
28/5Tue
1 stopAegean Airlines
15h 15mOTP-LHR
30/5Thu
1 stopAegean Airlines
8h 50mLHR-OTP
£163
19/5Sun
1 stopAegean Airlines
18h 00mTIA-LHR
20/5Mon
1 stopAegean Airlines
18h 15mLHR-TIA
£167

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Recent one-way flight deals

9/7Tue
directBritish Airways
3h 00mBEG-LHR
£43
30/7Tue
directBritish Airways
3h 00mBEG-LHR
£45
27/9Fri
1 stopAir Serbia
5h 15mZAG-LHR
£51
13/7Sat
1 stopAir Serbia
5h 00mTIA-LHR
£54
22/5Wed
1 stopAegean Airlines
21h 55mOTP-LHR
£60
5/6Wed
1 stopAegean Airlines
6h 25mTIA-LHR
£61
21/5Tue
directTAROM
3h 45mOTP-LHR
£78
15/5Wed
directTAROM
3h 45mOTP-LHR
£80
26/5Sun
1 stopLufthansa
5h 20mOTP-LHR
£92
30/7Tue
1 stopLufthansa
5h 35mOTP-LHR
£93

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Last minute flights from Southeast Europe to Heathrow

Last minute flight, train and bus deals

10/5Fri
directBritish Airways
3h 00mBEG-LHR
12/5Sun
directBritish Airways
2h 45mLHR-BEG
£108
9/5Thu
directAegean Airlines
3h 55mATH-LHR
12/5Sun
directAegean Airlines
3h 35mLHR-ATH
£128
10/5Fri
directBritish Airways
3h 00mBEG-LHR
12/5Sun
directBritish Airways
2h 45mLHR-BEG
£160
13/5Mon
multi-stopAegean Airlines
19h 30mOTP-LHR
14/5Tue
multi-stopAegean Airlines
8h 50mLHR-OTP
£179
9/5Thu
multi-stopLufthansa
5h 55mATH-LHR
11/5Sat
multi-stopLufthansa
6h 05mLHR-ATH
£227
11/5Sat
directAir Serbia
3h 00mBEG-LHR
18/5Sat
directAir Serbia
2h 40mLHR-BEG
£235
11/5Sat
directAir Serbia
3h 00mBEG-LHR
12/5Sun
directAir Serbia
2h 40mLHR-BEG
£236
11/5Sat
directTAROM
3h 45mOTP-LHR
12/6Wed
directTAROM
3h 20mLHR-OTP
£248
9/5Thu
multi-stopLufthansa
5h 55mSOF-LHR
9/5Thu
multi-stopLufthansa
7h 15mLHR-SOF
£267
10/5Fri
directTAROM
3h 45mOTP-LHR
14/5Tue
directTAROM
3h 20mLHR-OTP
£288

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Flights to London Heathrow Airport

Destination:

London Heathrow Airport (LHR)United Kingdom

Return flight deals:

London Heathrow Airport - Southeast Europe

Cabin classes:

£2,194
£137
£157
£16

Browse origins:

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