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Cheap flights from London Heathrow Airport to Southeast Europe from £52

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 21/2. 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.
British Airways Logo
18:30 - 23:45
LHR
-
OTP
3h 15mdirect
British Airways Logo
16:40 - 18:10
OTP
-
LHR
3h 30mdirect
£94British Airways
Mo, 9 Mrz - Di, 10 Mrz
British Airways Logo
17:45 - 23:00
LHR
-
OTP
3h 15mdirect
British Airways Logo
08:05 - 09:55
OTP
-
LHR
3h 50mdirect
£95British Airways
Di, 10 Mrz - Mi, 11 Mrz
Aegean Airlines Logo
19:00 - 00:35
LHR
-
ATH
3h 35mdirect
Aegean Airlines Logo
16:00 - 17:55
ATH
-
LHR
3h 55mdirect
£107Aegean Airlines
Di, 10 Mrz - Mo, 16 Mrz
Aegean Airlines Logo
22:15 - 09:05
LHR
-
TIA
9h 50m
1 stop
Aegean Airlines Logo
10:05 - 17:55
TIA
-
LHR
8h 50m
1 stop
£108Aegean Airlines
Di, 10 Mrz - Mi, 18 Mrz
SWISS Logo
18:40 - 16:15
LHR
-
CFU
19h 35m
1 stop
SWISS Logo
20:00 - 07:55
CFU
-
LHR
13h 55m
1 stop
£137SWISS
Di, 14 Apr - Di, 21 Apr
SWISS Logo
20:05 - 08:25
LHR
-
SPU
11h 20m
1 stop
SWISS Logo
14:20 - 19:15
SPU
-
LHR
5h 55m
1 stop
£138SWISS
Fr, 27 Feb - Mo, 2 Mrz
Austrian Airlines Logo
06:00 - 22:15
LHR
-
CFU
14h 15m
1 stop
Austrian Airlines Logo
23:05 - 08:20
CFU
-
LHR
11h 15m
1 stop
£139Austrian Airlines
Sa, 16 Mai - Sa, 23 Mai
Lufthansa Logo
08:45 - 19:30
LHR
-
LJU
9h 45m
1 stop
Lufthansa Logo
20:10 - 22:55
LJU
-
LHR
3h 45m
1 stop
£141Lufthansa
Fr, 27 Feb - Mo, 2 Mrz
Lufthansa Logo
07:40 - 12:40
LHR
-
LJU
4h 00m
1 stop
Lufthansa Logo
20:10 - 22:55
LJU
-
LHR
3h 45m
1 stop
£142Lufthansa
Do, 12 Mrz - Do, 19 Mrz
Austrian Airlines Logo
09:05 - 12:15
LHR
-
DBV
26h 10m
1 stop
Austrian Airlines Logo
13:00 - 13:05
DBV
-
LHR
25h 05m
1 stop
£146Austrian Airlines
Mi, 4 Mrz - Sa, 7 Mrz

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
10 Mar
LHR19:00London Heathrow
3h 35m
ATH00:35Athens Eleftherios V.
16 Mar
ATH16:00Athens Eleftherios V.
3h 55m
LHR17:55London Heathrow
£107
Aegean Airlines
3 Mar
LHR19:00London Heathrow
3h 35m
ATH00:35Athens Eleftherios V.
7 Mar
ATH19:10Athens Eleftherios V.
4h 05m
LHR21:15London Heathrow
£108
Aegean Airlines
11 Mar
LHR22:15London Heathrow
19h 15m
1 stop
SOF19:30Sofia
18 Mar
SOF16:20Sofia
6h 55m
1 stop
LHR21:15London Heathrow
£119

British Airways flights from London Heathrow Airport to Southeast Europe

Our best British Airways deals on London Heathrow Airport to Southeast Europe flight tickets
British Airways
9 Mar
LHR18:30London Heathrow
3h 15m
OTP23:45Bucharest Otopeni Intl
10 Mar
OTP16:40Bucharest Otopeni Intl
3h 30m
LHR18:10London Heathrow
£94
British Airways
10 Mar
LHR17:45London Heathrow
3h 15m
OTP23:00Bucharest Otopeni Intl
11 Mar
OTP08:05Bucharest Otopeni Intl
3h 50m
LHR09:55London Heathrow
£95
British Airways
11 Mar
LHR17:40London Heathrow
3h 15m
OTP22:55Bucharest Otopeni Intl
14 Mar
OTP08:05Bucharest Otopeni Intl
3h 55m
LHR10:00London Heathrow
£95

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 28 Januar 2026.
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

Mo 9/3

18:30-23:45

Nonstop3h 15m

Bucharest Otopeni Intl

Di 10/3

16:40-18:10

Nonstop3h 30m

£94

LondonBucharest

LHR - OTP

LHROTP

London Heathrow

Di 10/3

17:45-23:00

Nonstop3h 15m

Bucharest Otopeni Intl

Mi 11/3

08:05-09:55

Nonstop3h 50m

£95

LondonAthens

LHR - ATH

LHRATH

London Heathrow

Di 10/3

19:00-00:35

Nonstop3h 35m

Athens Eleftherios V.

Mo 16/3

16:00-17:55

Nonstop3h 55m

£107

LondonTirana

LHR - TIA

LHRTIA

London Heathrow

Di 10/3

22:15-09:05

1 stop9h 50m

Tirana Rinas

Mi 18/3

10:05-17:55

1 stop8h 50m

£108

LondonCorfu

LHR - CFU

LHRCFU

London Heathrow

Di 14/4

18:40-16:15

1 stop19h 35m

Corfu Ioannis Kapodistrias

Di 21/4

20:00-07:55

1 stop13h 55m

£137

LondonSplit

LHR - SPU

LHRSPU

London Heathrow

Fr 27/2

20:05-08:25

1 stop11h 20m

Split

Mo 2/3

14:20-19:15

1 stop5h 55m

£138

LondonCorfu

LHR - CFU

LHRCFU

London Heathrow

Sa 16/5

06:00-22:15

1 stop14h 15m

Corfu Ioannis Kapodistrias

Sa 23/5

23:05-08:20

1 stop11h 15m

£139

LondonLjubljana

LHR - LJU

LHRLJU

London Heathrow

Fr 27/2

08:45-19:30

1 stop9h 45m

Ljubljana Joze Pucnik

Mo 2/3

20:10-22:55

1 stop3h 45m

£141

LondonLjubljana

LHR - LJU

LHRLJU

London Heathrow

Do 12/3

07:40-12:40

1 stop4h 00m

Ljubljana Joze Pucnik

Do 19/3

20:10-22:55

1 stop3h 45m

£142

LondonDubrovnik

LHR - DBV

LHRDBV

London Heathrow

Mi 4/3

09:05-12:15

1 stop26h 10m

Dubrovnik

Sa 7/3

13:00-13:05

1 stop25h 05m

£146

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 November is another great option to travel to Southeast Europe, with average flight prices from London Heathrow Airport averaging around £124.

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 Monday. Travellers who choose to depart for Southeast Europe on a Monday will often find tickets for as low as £181. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around £223. 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 £133. 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 £226. 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 £191 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 £144 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

82 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 82 airports in Southeast Europe. From London Heathrow Airport there are direct flights to Ljubljana Joze Pucnik (LJU), Split (SPU).
Search flight deals

  • 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 £13Free CancellationRating
6.4
125 reviews
Search Ryanair flights
Wizz AirPriceFrom £27Free CancellationRating
6.2
160 reviews
Search Wizz Air flights
RyanairPriceFrom £28Free CancellationRating
6.9
5,253 reviews
Search Ryanair flights
Wizz AirPriceFrom £40Free CancellationRating
6.7
401 reviews
Search Wizz Air flights
Wizz AirPriceFrom £42Free CancellationRating
6.8
1,080 reviews
Search Wizz Air flights
Air SerbiaPriceFrom £55Free CancellationRating
6.2
215 reviews
Search Air Serbia flights
Sky ExpressPriceFrom £56Free CancellationRating
7.6
121 reviews
Search Sky Express flights
easyJetPriceFrom £68Free CancellationRating
6.9
1,866 reviews
Search easyJet flights
Aegean AirlinesPriceFrom £91Free CancellationRating
8.1
845 reviews
Search Aegean Airlines flights
Scandinavian AirlinesPriceFrom £93Free CancellationRating
7.3
1,669 reviews
Search Scandinavian Airlines 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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Fr 27/2
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