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Cheap flights from London Heathrow Airport to Southeast Europe from £49

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 4/11. 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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Find the cheapest flights from London Heathrow Airport to Southeast Europe

Cheap return flights

British Airways Logo
18:35 - 23:50LHR-OTP
3h 15mdirect
British Airways Logo
16:15 - 17:45OTP-LHR
3h 30mdirect
£84British Airways
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Sat, 4 Oct - Wed, 22 Oct
British Airways Logo
14:15 - 19:30LHR-OTP
3h 15mdirect
British Airways Logo
08:05 - 09:55OTP-LHR
3h 50mdirect
£93British Airways
Find Deal
Fri, 20 Feb - Wed, 25 Feb
Aegean Airlines Logo
19:00 - 00:35LHR-ATH
3h 35mdirect
Aegean Airlines Logo
13:25 - 15:30ATH-LHR
4h 05mdirect
£95Aegean Airlines
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Mon, 3 Nov - Mon, 24 Nov
Aegean Airlines Logo
19:00 - 00:35LHR-ATH
3h 35mdirect
Aegean Airlines Logo
19:10 - 21:15ATH-LHR
4h 05mdirect
£111Aegean Airlines
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Thu, 27 Nov - Mon, 1 Dec
Air Serbia Logo
19:55 - 15:35LHR-SOF
17h 40m1 stop
Air Serbia Logo
05:00 - 12:30SOF-LHR
9h 30m1 stop
£144Air Serbia
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Sat, 4 Oct - Sat, 11 Oct
Lufthansa Logo
10:50 - 16:15LHR-SPU
4h 25m1 stop
Lufthansa Logo
17:05 - 20:45SPU-LHR
4h 40m1 stop
£145Lufthansa
Find Deal
Wed, 15 Oct - Wed, 22 Oct
Air Serbia Logo
19:25 - 02:10LHR-TIA
5h 45m1 stop
Air Serbia Logo
04:00 - 12:30TIA-LHR
9h 30m1 stop
£150Air Serbia
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Sun, 5 Oct - Tue, 14 Oct
Lufthansa Logo
09:00 - 16:15LHR-SPU
6h 15m1 stop
Lufthansa Logo
17:05 - 20:45SPU-LHR
4h 40m1 stop
£151Lufthansa
Find Deal
Wed, 15 Oct - Wed, 22 Oct
Austrian Airlines Logo
06:00 - 12:15LHR-DBV
5h 15m1 stop
Austrian Airlines Logo
13:00 - 21:40DBV-LHR
9h 40m1 stop
£152Austrian Airlines
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Wed, 8 Oct - Sat, 11 Oct
Austrian Airlines Logo
06:00 - 12:15LHR-DBV
5h 15m1 stop
Austrian Airlines Logo
13:00 - 21:40DBV-LHR
9h 40m1 stop
£153Austrian Airlines
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Wed, 8 Oct - Sat, 11 Oct

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
3 Nov
LHR19:00London Heathrow
3h 35m
ATH00:35Athens Eleftherios V.
24 Nov
ATH13:25Athens Eleftherios V.
4h 05m
LHR15:30London Heathrow
£95
Find similar
Aegean Airlines
27 Nov
LHR19:00London Heathrow
3h 35m
ATH00:35Athens Eleftherios V.
1 Dec
ATH19:10Athens Eleftherios V.
4h 05m
LHR21:15London Heathrow
£111
Find similar
Aegean Airlines
14 Jan
LHR19:00London Heathrow
3h 35m
ATH00:35Athens Eleftherios V.
21 Jan
ATH16:00Athens Eleftherios V.
3h 55m
LHR17:55London Heathrow
£121
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Scandinavian Airlines flights from London Heathrow Airport to Southeast Europe

Our best Scandinavian Airlines deals on London Heathrow Airport to Southeast Europe flight tickets
Scandinavian Airlines
29 Nov
LHR13:55London Heathrow
18h 40m
1 stop
ATH10:35Athens Eleftherios V.
2 Dec
ATH21:10Athens Eleftherios V.
13h 45m
1 stop
LHR08:55London Heathrow
£148
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Scandinavian Airlines
20 Sept
LHR10:20London Heathrow
8h 15m
1 stop
OTP20:35Bucharest Otopeni Intl
27 Sept
OTP21:25Bucharest Otopeni Intl
13h 55m
1 stop
LHR09:20London Heathrow
£163
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Scandinavian Airlines
20 Sept
LHR06:40London Heathrow
11h 55m
1 stop
OTP20:35Bucharest Otopeni Intl
24 Sept
OTP20:35Bucharest Otopeni Intl
21h 25m
1 stop
LHR16:00London Heathrow
£204
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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 16 September 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

LondonBucharest

LHR - OTP

LHROTP

London Heathrow

Sat 4/10

18:35-23:50

Nonstop3h 15m

Bucharest Otopeni Intl

Wed 22/10

16:15-17:45

Nonstop3h 30m

£84

LondonBucharest

LHR - OTP

LHROTP

London Heathrow

Fri 20/2

14:15-19:30

Nonstop3h 15m

Bucharest Otopeni Intl

Wed 25/2

08:05-09:55

Nonstop3h 50m

£93

LondonAthens

LHR - ATH

LHRATH

London Heathrow

Mon 3/11

19:00-00:35

Nonstop3h 35m

Athens Eleftherios V.

Mon 24/11

13:25-15:30

Nonstop4h 05m

£95

LondonAthens

LHR - ATH

LHRATH

London Heathrow

Thu 27/11

19:00-00:35

Nonstop3h 35m

Athens Eleftherios V.

Mon 1/12

19:10-21:15

Nonstop4h 05m

£111

LondonSofia

LHR - SOF

LHRSOF

London Heathrow

Sat 4/10

19:55-15:35

1 stop17h 40m

Sofia

Sat 11/10

05:00-12:30

1 stop9h 30m

£144

LondonSplit

LHR - SPU

LHRSPU

London Heathrow

Wed 15/10

10:50-16:15

1 stop4h 25m

Split

Wed 22/10

17:05-20:45

1 stop4h 40m

£145

LondonTirana

LHR - TIA

LHRTIA

London Heathrow

Sun 5/10

19:25-02:10

1 stop5h 45m

Tirana Rinas

Tue 14/10

04:00-12:30

1 stop9h 30m

£150

LondonSplit

LHR - SPU

LHRSPU

London Heathrow

Wed 15/10

09:00-16:15

1 stop6h 15m

Split

Wed 22/10

17:05-20:45

1 stop4h 40m

£151

LondonDubrovnik

LHR - DBV

LHRDBV

London Heathrow

Wed 8/10

06:00-12:15

1 stop5h 15m

Dubrovnik

Sat 11/10

13:00-21:40

1 stop9h 40m

£152

LondonDubrovnik

LHR - DBV

LHRDBV

London Heathrow

Wed 8/10

06:00-12:15

1 stop5h 15m

Dubrovnik

Sat 11/10

13:00-21:40

1 stop9h 40m

£153

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 £134.

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 £191. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around £245. 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?

At midday 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 £170. Flying to Southeast Europe at midday 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 £233. 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 Belgrade Nikola Tesla 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 £202 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 £132 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 05m

Direct flights

Every day

Airports in Southeast Europe

2 airports
The fastest flight from London Heathrow Airport to Southeast Europe takes 2h 05m
Direct flights go from London Heathrow Airport to Southeast Europe every day.
There are 2 airports near Southeast Europe: Zagreb Franjo Tuđman (ZAG), Split (SPU)
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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
Wizz AirPriceFrom £26Free CancellationRating
6.0
151 reviews
Search Wizz Air flights
RyanairPriceFrom £31Free CancellationRating
6.2
113 reviews
Search Ryanair flights
RyanairPriceFrom £31Free CancellationRating
6.8
5,155 reviews
Search Ryanair flights
easyJetPriceFrom £36Free CancellationRating
6.9
1,820 reviews
Search easyJet flights
Wizz AirPriceFrom £36Free CancellationRating
6.8
1,050 reviews
Search Wizz Air flights
Wizz AirPriceFrom £41Free CancellationRating
6.8
376 reviews
Search Wizz Air flights
Air SerbiaPriceFrom £53Free CancellationRating
6.2
200 reviews
Search Air Serbia flights
Sky ExpressPriceFrom £57Free CancellationRating
7.5
120 reviews
Search Sky Express flights
TAROMPriceFrom £66Free CancellationRating
6.3
71 reviews
Search TAROM flights
Air FrancePriceFrom £114Free CancellationRating
7.4
1,469 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.
Start using Trips
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