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Cheap flights from London Heathrow Airport to Southeast Europe from £50

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Southeast Europe departing on 8/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from London Heathrow Airport to Southeast Europe

Cheap return flights

Enter your travel dates to find the best prices.
Aegean Airlines Logo
22:15 - 03:50LHR-ATH
3h 35mdirect
Aegean Airlines Logo
13:25 - 15:30ATH-LHR
4h 05mdirect
£90Aegean Airlines
Find Deal
fre., 6 feb. - man., 9 feb.
Aegean Airlines Logo
16:35 - 22:20LHR-ATH
3h 45mdirect
Aegean Airlines Logo
19:10 - 21:15ATH-LHR
4h 05mdirect
£92Aegean Airlines
Find Deal
tor., 5 feb. - tor., 12 feb.
British Airways Logo
17:45 - 23:00LHR-OTP
3h 15mdirect
British Airways Logo
21:00 - 22:30OTP-LHR
3h 30mdirect
£98British Airways
Find Deal
tir., 20 jan. - tor., 29 jan.
British Airways Logo
17:40 - 22:55LHR-OTP
3h 15mdirect
British Airways Logo
08:05 - 10:00OTP-LHR
3h 55mdirect
£99British Airways
Find Deal
ons., 4 mar. - lør., 7 mar.
Air Serbia Logo
13:20 - 17:05LHR-BEG
2h 45mdirect
Air Serbia Logo
10:15 - 12:20BEG-LHR
3h 05mdirect
£137Air Serbia
Find Deal
fre., 27 feb. - søn., 1 mar.
Lufthansa Logo
07:40 - 19:30LHR-LJU
10h 50m1 stop
Lufthansa Logo
14:05 - 20:40LJU-LHR
7h 35m1 stop
£139Lufthansa
Find Deal
man., 2 feb. - man., 11 maj
Lufthansa Logo
07:40 - 12:40LHR-LJU
4h 00m1 stop
Lufthansa Logo
13:20 - 19:35LJU-LHR
7h 15m1 stop
£141Lufthansa
Find Deal
tor., 11 dec. - tor., 18 dec.
Air Serbia Logo
13:20 - 17:00LHR-BEG
2h 40mdirect
Air Serbia Logo
10:20 - 12:20BEG-LHR
3h 00mdirect
£143Air Serbia
Find Deal
ons., 26 nov. - ons., 3 dec.
Austrian Airlines Logo
06:00 - 14:00LHR-SJJ
7h 00m1 stop
Austrian Airlines Logo
14:45 - 21:40SJJ-LHR
7h 55m1 stop
£166Austrian Airlines
Find Deal
lør., 15 nov. - ons., 19 nov.
Austrian Airlines Logo
06:00 - 14:00LHR-SJJ
7h 00m1 stop
Austrian Airlines Logo
14:45 - 21:40SJJ-LHR
7h 55m1 stop
£168Austrian Airlines
Find Deal
ons., 26 nov. - ons., 3 dec.

Aegean Airlines flights from London Heathrow Airport to Southeast Europe

Our best Aegean Airlines deals on London Heathrow Airport to Southeast Europe flight tickets
Aegean Airlines
6 Feb
LHR22:15London Heathrow
3h 35m
ATH03:50Athens Eleftherios V.
9 Feb
ATH13:25Athens Eleftherios V.
4h 05m
LHR15:30London Heathrow
£90
Find similar
Aegean Airlines
5 Feb
LHR16:35London Heathrow
3h 45m
ATH22:20Athens Eleftherios V.
12 Feb
ATH19:10Athens Eleftherios V.
4h 05m
LHR21:15London Heathrow
£92
Find similar
Aegean Airlines
28 Jan
LHR16:35London Heathrow
3h 45m
ATH22:20Athens Eleftherios V.
11 Feb
ATH19:10Athens Eleftherios V.
4h 05m
LHR21:15London Heathrow
£93
Find similar

KLM flights from London Heathrow Airport to Southeast Europe

Our best KLM deals on London Heathrow Airport to Southeast Europe flight tickets
KLM
21 Nov
LHR17:05London Heathrow
5h 20m
1 stop
BEG23:25Belgrade Nikola Tesla
17 Dec
BEG06:05Belgrade Nikola Tesla
5h 40m
1 stop
LHR10:45London Heathrow
£168
Find similar
KLM
27 Nov
LHR11:45London Heathrow
10h 40m
1 stop
BEG23:25Belgrade Nikola Tesla
4 Dec
BEG12:35Belgrade Nikola Tesla
5h 25m
1 stop
LHR17:00London Heathrow
£169
Find similar
KLM
12 Nov
LHR08:40London Heathrow
5h 55m
1 stop
ATH16:35Athens Eleftherios V.
9 Dec
ATH13:45Athens Eleftherios V.
7h 30m
1 stop
LHR19:15London Heathrow
£175
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Southeast Europe 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, momondo users made 279,928 searches. Data last updated 31 oktober 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Southeast Europe that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonAthens

LHR - ATH

LHRATH

London Heathrow

fre. 6/2

22:15-03:50

Nonstop3h 35m

Athens Eleftherios V.

man. 9/2

13:25-15:30

Nonstop4h 05m

£90

LondonAthens

LHR - ATH

LHRATH

London Heathrow

tor. 5/2

16:35-22:20

Nonstop3h 45m

Athens Eleftherios V.

tor. 12/2

19:10-21:15

Nonstop4h 05m

£92

LondonBucharest

LHR - OTP

LHROTP

London Heathrow

tir. 20/1

17:45-23:00

Nonstop3h 15m

Bucharest Otopeni Intl

tor. 29/1

21:00-22:30

Nonstop3h 30m

£98

LondonBucharest

LHR - OTP

LHROTP

London Heathrow

ons. 4/3

17:40-22:55

Nonstop3h 15m

Bucharest Otopeni Intl

lør. 7/3

08:05-10:00

Nonstop3h 55m

£99

LondonBelgrade

LHR - BEG

LHRBEG

London Heathrow

fre. 27/2

13:20-17:05

Nonstop2h 45m

Belgrade Nikola Tesla

søn. 1/3

10:15-12:20

Nonstop3h 05m

£137

LondonLjubljana

LHR - LJU

LHRLJU

London Heathrow

man. 2/2

07:40-19:30

1 stop10h 50m

Ljubljana Joze Pucnik

man. 11/5

14:05-20:40

1 stop7h 35m

£139

LondonLjubljana

LHR - LJU

LHRLJU

London Heathrow

tor. 11/12

07:40-12:40

1 stop4h 00m

Ljubljana Joze Pucnik

tor. 18/12

13:20-19:35

1 stop7h 15m

£141

LondonBelgrade

LHR - BEG

LHRBEG

London Heathrow

ons. 26/11

13:20-17:00

Nonstop2h 40m

Belgrade Nikola Tesla

ons. 3/12

10:20-12:20

Nonstop3h 00m

£143

LondonSarajevo

LHR - SJJ

LHRSJJ

London Heathrow

lør. 15/11

06:00-14:00

1 stop7h 00m

Sarajevo Butmir

ons. 19/11

14:45-21:40

1 stop7h 55m

£166

LondonSarajevo

LHR - SJJ

LHRSJJ

London Heathrow

ons. 26/11

06:00-14:00

1 stop7h 00m

Sarajevo Butmir

ons. 3/12

14:45-21:40

1 stop7h 55m

£168

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Southeast Europe from

How to get the cheapest flight ticket from London Heathrow Airport to Southeast Europe

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Southeast Europe?

The month of January is another great option to travel to Southeast Europe, with average flight prices from London Heathrow Airport averaging around £138.

What is the cheapest day to depart on your flight to Southeast Europe?

The cheapest day to depart from London Heathrow Airport to Southeast Europe is on a Thursday. Travellers who choose to depart for Southeast Europe on a Thursday will often find tickets for as low as £194. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around £246. These prices are subject to change though, so be sure to set up a Price Alert for flights to Southeast Europe.

What is the cheapest time of day to depart on your flight to Southeast Europe?

In the afternoon is the cheapest time of day to fly from London Heathrow Airport to Southeast Europe when you can find flight prices for as low as £194. Flying to Southeast Europe in the afternoon is an ideal time because this is during off-peak travel hours. Flights to Southeast Europe are more costly in the morning, with an average ticket price of £239. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest London Heathrow to Southeast Europe flight route?

Fly from London Heathrow to Bucharest Otopeni Intl for the best London Heathrow - Southeast Europe flight prices

How far in advance should I book a flight to Southeast Europe?

You are more likely to see cheaper flights to Southeast Europe from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Europe for around £209 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Europe from London Heathrow Airport for as low as £129 on momondo.

What cabin class options are available on London Heathrow to Southeast Europe flights?

There are 3 cabin classes available to choose from on London Heathrow to Southeast Europe flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London Heathrow Airport to Southeast Europe flights?

No. A direct flight is the cheapest option for a flight between London Heathrow Airport to Southeast Europe.

Cheap London Heathrow Airport to Southeast Europe flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Southeast Europe

Fastest flight time

2h 10m

Direct flights

Every day

Airports in Southeast Europe

2 airports
The fastest flight from London Heathrow Airport to Southeast Europe takes 2h 10m
Direct flights go from London Heathrow Airport to Southeast Europe every day.
There are 2 airports near Southeast Europe: Belgrade Nikola Tesla (BEG), Ljubljana Joze Pucnik (LJU)
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  • When did momondo last update prices for flights from London Heathrow Airport to Southeast Europe?

    Prices for flights from London Heathrow Airport to Southeast Europe are updated daily.

  • How many operators does momondo search for flights from London Heathrow Airport to Southeast Europe?

  • How old do you have to be to fly from London Heathrow Airport to Southeast Europe?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Southeast Europe.

  • What documentation or ID do you need to fly to Southeast Europe?

    The required travel and health documents for your Southeast Europe trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Southeast Europe. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from London Heathrow Airport to Southeast Europe?

Best airlines flying from London Heathrow Airport to Southeast Europe

Compare and see reviews for airlines that fly from London Heathrow Airport to Southeast Europe with momondo
Airline
Rating
Free Cancellation
Price
RyanairPriceFrom £14Free CancellationRating
6.3
115 reviews
Search Ryanair flights
Wizz AirPriceFrom £26Free CancellationRating
6.1
155 reviews
Search Wizz Air flights
RyanairPriceFrom £31Free CancellationRating
6.8
5,187 reviews
Search Ryanair flights
Wizz AirPriceFrom £37Free CancellationRating
6.8
389 reviews
Search Wizz Air flights
Wizz AirPriceFrom £37Free CancellationRating
6.8
1,057 reviews
Search Wizz Air flights
Air SerbiaPriceFrom £54Free CancellationRating
6.2
205 reviews
Search Air Serbia flights
Sky ExpressPriceFrom £59Free CancellationRating
7.5
120 reviews
Search Sky Express flights
easyJetPriceFrom £60Free CancellationRating
6.9
1,840 reviews
Search easyJet flights
Aegean AirlinesPriceFrom £114Free CancellationRating
8.1
814 reviews
Search Aegean Airlines flights
Air FrancePriceFrom £118Free CancellationRating
7.4
1,482 reviews
Search Air France flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Southeast Europe?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Southeast Europe . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from London to Southeast Europe with flexible booking policies on momondo?

Yes. All flights to Southeast Europe from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from London to Southeast Europe?

momondo helps you find the best flight between London and Southeast Europe by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from London to Southeast Europe right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Southeast Europe, momondo offers a useful price alert feature which will track prices for flights to Southeast Europe from London and alert you when they change.

An easier way to manage your Southeast Europe trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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