How long is the flight from Southeast Europe to London Heathrow Airport?

For as low as £98, British Airways can have you in London Heathrow Airport from Southeast Europe in 3h 40m. The distance from Southeast Europe to London Heathrow Airport is about 1307 mi. Both multi-stop and direct flights can be found to your destination and back.

What are the cheapest airlines to fly from Southeast Europe to London Heathrow Airport one-way?

One-way options have recently been found by users for as low as £39 on British Airways. Other airlines that offer cheap prices include Aegean Airlines from £60 and Air Serbia from £64 one-way.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most popular routes from Southeast Europe to London Heathrow Airport?

The most popular flight routes from Southeast Europe to London Heathrow Airport are Bucharest Otopeni Intl - London Heathrow, Athens Eleftherios V. - London Heathrow and Cluj Napoca - London Heathrow.

What are the cheapest flights from Southeast Europe to London Heathrow Airport?

While on average a flight from Southeast Europe to London Heathrow Airport is generally £187, our data shows the cheapest flight currently is £75. When looking at the most popular route, (Bucharest Otopeni Intl - London Heathrow), you can expect to pay £86 for that flight.

What are the most reliable airlines from Southeast Europe to London Heathrow Airport?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Southeast Europe to London Heathrow Airport on time: Air Canada (80%), Singapore Airlines (72%), Aegean Airlines (72%).

What are the most popular airlines that fly from Southeast Europe to London Heathrow Airport?

Consider British Airways, Aegean Airlines or Air Serbia when booking your flight. These represent the most popular airlines when flying from Southeast Europe to London Heathrow Airport.

Can I find deals for flights from Southeast Europe to Heathrow that include hotel bookings?

Yes. In addition to deals on Southeast Europe to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Southeast Europe to Heathrow?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Southeast Europe to Heathrow.

Can I find deals for business class flights from Southeast Europe to Heathrow?

Yes. Cheapflights offers flight deals from Southeast Europe to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£39+ Cheap Flights from Southeast Europe to London Heathrow Airport

Find flight deals from Southeast Europe to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Southeast Europe to Heathrow
Explore the most affordable flight options available from Southeast Europe to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 October 2025.

Tue 25/1116:40OTP - LHR

Nonstop3h 30mBritish Airways

Fri 28/1118:30LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 16/10£89

Wed 19/1115:50OTP - LHR

Nonstop3h 40mBritish Airways

Fri 21/1114:15LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 15/10£91

Mon 1/1220:25OTP - LHR

Nonstop3h 30mBritish Airways

Fri 5/1218:30LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 15/10£92

Tue 25/1116:40OTP - LHR

Nonstop3h 30mBritish Airways

Sat 29/1118:10LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 16/10£92

Fri 14/1120:20OTP - LHR

Nonstop3h 30mBritish Airways

Sat 15/1118:10LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 16/10£95

Thu 20/1116:35OTP - LHR

Nonstop3h 30mBritish Airways

Sat 22/1118:10LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 16/10£95

Thu 20/1116:35OTP - LHR

Nonstop3h 30mBritish Airways

Mon 24/1118:30LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 15/10£96

Wed 26/1115:50OTP - LHR

Nonstop3h 40mBritish Airways

Sun 30/1109:50LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 16/10£98

Wed 19/1115:50OTP - LHR

Nonstop3h 40mBritish Airways

Sun 23/1109:50LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 15/10£99

Fri 14/1120:20OTP - LHR

Nonstop3h 30mBritish Airways

Thu 20/1118:15LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 16/10£101

Fri 21/1116:45OTP - LHR

Nonstop3h 30mBritish Airways

Sun 23/1109:50LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 15/10£101

Sat 29/1112:05SOF - LHR

Nonstop3h 45mBritish Airways

Sat 6/1206:05LHR - SOF

Nonstop3h 10mBritish Airways

Deal found 15/10£108

Best flights from Southeast Europe to Heathrow
Discover carefully curated flight deals from Southeast Europe to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 October 2025.

Wed 3/1215:50OTP - LHR

Nonstop3h 40mBritish Airways

Mon 12/118:30LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 16/10£98

Fri 28/1118:00CLJ - LHR

1 stop6h 00mLOT

Mon 1/1210:25LHR - CLJ

1 stop4h 55mLOT

Deal found 15/10£127

Sat 11/405:00SOF - LHR

1 stop9h 30mAir Serbia

Sat 11/419:55LHR - SOF

1 stop17h 40mAir Serbia

Deal found 16/10£127

Sat 29/1112:05SOF - LHR

Nonstop3h 45mMultiple Airlines

Sat 6/1222:15LHR - SOF

1 stop19h 15mMultiple Airlines

Deal found 15/10£136

Mon 16/307:55SKG - LHR

1 stop15h 20mAegean Airlines

Sat 21/322:15LHR - SKG

1 stop10h 20mAegean Airlines

Deal found 17/10£138

Sun 30/1116:05IAS - LHR

1 stop18h 15mAustrian Airlines

Sun 7/1206:00LHR - IAS

1 stop7h 20mAustrian Airlines

Deal found 15/10£142

Sun 23/1106:05SOF - LHR

1 stop6h 20mLufthansa

Tue 2/1208:45LHR - SOF

1 stop7h 35mLufthansa

Deal found 16/10£150

Thu 13/1110:50CLJ - LHR

1 stop7h 30mSWISS

Sun 16/1106:00LHR - CLJ

1 stop6h 30mSWISS

Deal found 15/10£153

Wed 3/1213:55OTP - LHR

1 stop5h 05mKLM

Mon 12/115:45LHR - OTP

1 stop6h 45mKLM

Deal found 14/10£158

Tue 25/1109:30SKG - LHR

1 stop9h 25mTurkish Airlines

Sun 30/1122:35LHR - SKG

1 stop8h 05mTurkish Airlines

Deal found 17/10£194

Mon 24/1108:05OTP - LHR

Nonstop3h 55mBritish Airways

Wed 26/1117:40LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 15/10£104

Fri 14/1120:20OTP - LHR

Nonstop3h 30mBritish Airways

Fri 21/1118:30LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 16/10£105

Wed 19/1108:05OTP - LHR

Nonstop3h 50mBritish Airways

Wed 3/1209:30LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 17/10£111

Mon 3/1118:00CLJ - LHR

1 stop17h 35mLOT

Thu 6/1110:35LHR - CLJ

1 stop4h 45mLOT

Deal found 17/10£140

Thu 13/1116:05IAS - LHR

1 stop7h 35mAustrian Airlines

Wed 19/1106:00LHR - IAS

1 stop7h 20mAustrian Airlines

Deal found 16/10£142

Tue 3/308:00OTP - LHR

Nonstop3h 50mBritish Airways

Sat 7/318:10LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 16/10£112

Mon 10/1119:05SOF - LHR

1 stop5h 50mLufthansa

Sun 16/1107:40LHR - SOF

1 stop8h 40mLufthansa

Deal found 16/10£151

Thu 11/1210:50CLJ - LHR

1 stop7h 30mMultiple Airlines

Tue 16/1206:35LHR - CLJ

1 stop5h 05mMultiple Airlines

Deal found 15/10£153

Thu 20/1110:50CLJ - LHR

1 stop7h 30mSWISS

Sun 23/1106:00LHR - CLJ

1 stop6h 30mSWISS

Deal found 16/10£153

Tue 4/1118:35SOF - LHR

1 stop17h 00mLOT

Sat 8/1118:20LHR - SOF

1 stop21h 30mLOT

Deal found 15/10£142

Sun 9/1116:05IAS - LHR

1 stop7h 35mAustrian Airlines

Sat 15/1114:50LHR - IAS

1 stop22h 30mAustrian Airlines

Deal found 15/10£145

Fri 21/1113:45ATH - LHR

1 stop7h 30mKLM

Sat 22/1108:40LHR - ATH

1 stop5h 50mKLM

Deal found 16/10£162

Sun 30/1120:20SOF - LHR

1 stop26h 55mAegean Airlines

Sun 7/1212:15LHR - SOF

1 stop20h 10mAegean Airlines

Deal found 16/10£164

Sun 16/1106:05SOF - LHR

1 stop6h 20mLufthansa

Sat 22/1106:35LHR - SOF

1 stop4h 40mLufthansa

Deal found 17/10£151

Sun 16/1115:15CLJ - LHR

1 stop8h 25mSWISS

Sun 23/1106:00LHR - CLJ

1 stop6h 30mSWISS

Deal found 16/10£153

Mon 10/1108:05OTP - LHR

Nonstop3h 55mBritish Airways

Sat 15/1118:10LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 16/10£115

Wed 12/1114:25CLJ - LHR

1 stop4h 40mMultiple Airlines

Wed 19/1120:05LHR - CLJ

1 stop12h 00mMultiple Airlines

Deal found 15/10£154

Thu 20/1116:05IAS - LHR

1 stop7h 35mAustrian Airlines

Wed 26/1106:00LHR - IAS

1 stop7h 20mAustrian Airlines

Deal found 15/10£145

Sat 29/1113:25ATH - LHR

1 stop9h 25mKLM

Sat 6/1208:40LHR - ATH

1 stop5h 50mKLM

Deal found 15/10£164

Mon 1/1206:25TSR - LHR

1 stop15h 10mLufthansa

Mon 8/1206:35LHR - TSR

1 stop9h 10mLufthansa

Deal found 17/10£151

Direct flights from Southeast Europe to Heathrow
Explore direct flight options from Southeast Europe to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 October 2025.

Mon 16/216:00OTP - LHR

Nonstop3h 40mBritish Airways

Sun 22/209:50LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 16/10£86

Thu 26/221:00OTP - LHR

Nonstop3h 30mBritish Airways

Sun 1/318:30LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 15/10£87

Mon 16/220:25OTP - LHR

Nonstop3h 30mBritish Airways

Fri 20/210:30LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 17/10£88

Tue 25/1116:40OTP - LHR

Nonstop3h 30mBritish Airways

Fri 28/1118:30LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 16/10£89

Tue 13/116:40OTP - LHR

Nonstop3h 30mBritish Airways

Sun 8/209:50LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 16/10£89

Wed 19/1115:50OTP - LHR

Nonstop3h 40mBritish Airways

Fri 21/1114:15LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 15/10£91

Mon 1/1220:25OTP - LHR

Nonstop3h 30mBritish Airways

Fri 5/1218:30LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 15/10£92

Tue 25/1116:40OTP - LHR

Nonstop3h 30mBritish Airways

Sat 29/1118:10LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 16/10£92

Fri 6/220:20OTP - LHR

Nonstop3h 30mBritish Airways

Sun 8/309:50LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 16/10£93

Fri 23/116:45OTP - LHR

Nonstop3h 30mBritish Airways

Fri 30/114:15LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 14/10£94

Fri 14/1120:20OTP - LHR

Nonstop3h 30mBritish Airways

Sat 15/1118:10LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 16/10£95

Thu 20/1116:35OTP - LHR

Nonstop3h 30mBritish Airways

Sat 22/1118:10LHR - OTP

Nonstop3h 15mBritish Airways

Deal found 16/10£95

Last-minute flights from Southeast Europe to Heathrow
Discover last-minute flight deals from Southeast Europe to Heathrow. Data last updated 17 October 2025 and is based on user searches.

Mon 10/1117:25SOF - LHR

Nonstop3h 30mBritish Airways

Sun 16/1107:50LHR - SOF

Nonstop3h 10mBritish Airways

Deal found 16/10£114

Sat 15/1116:55ATH - LHR

Nonstop4h 00mBritish Airways

Fri 21/1106:35LHR - ATH

Nonstop3h 40mBritish Airways

Deal found 16/10£124

Sun 16/1114:30SOF - LHR

Nonstop3h 30mBritish Airways

Sat 22/1106:05LHR - SOF

Nonstop3h 10mBritish Airways

Deal found 17/10£118

Tue 18/1116:55ATH - LHR

Nonstop4h 00mBritish Airways

Thu 8/119:25LHR - ATH

Nonstop3h 40mBritish Airways

Deal found 16/10£130

Thu 20/1118:00CLJ - LHR

1 stop6h 00mLOT

Sat 22/1110:35LHR - CLJ

1 stop5h 00mLOT

Deal found 15/10£126

Fri 21/1119:50ATH - LHR

Nonstop4h 00mBritish Airways

Mon 24/1110:10LHR - ATH

Nonstop3h 45mBritish Airways

Deal found 15/10£127

Fri 21/1119:50ATH - LHR

Nonstop4h 00mBritish Airways

Thu 27/1109:25LHR - ATH

Nonstop3h 40mBritish Airways

Deal found 16/10£128

Mon 24/1119:10ATH - LHR

Nonstop4h 05mAegean Airlines

Thu 27/1119:00LHR - ATH

Nonstop3h 35mAegean Airlines

Deal found 15/10£121

Fri 28/1118:00CLJ - LHR

1 stop17h 35mLOT

Mon 1/1206:30LHR - CLJ

1 stop8h 50mLOT

Deal found 16/10£127

Sat 29/1112:05SOF - LHR

Nonstop3h 45mBritish Airways

Sat 6/1206:05LHR - SOF

Nonstop3h 10mBritish Airways

Deal found 15/10£108

Sat 29/1112:05SOF - LHR

Nonstop3h 45mBritish Airways

Sun 30/1107:50LHR - SOF

Nonstop3h 10mBritish Airways

Deal found 15/10£124

Sat 29/1113:55CLJ - LHR

1 stop21h 40mLOT

Sat 6/1206:30LHR - CLJ

1 stop4h 45mLOT

Deal found 15/10£125

One-way flights from Southeast Europe to Heathrow
Search for one-way flight options from Southeast Europe to Heathrow. Find affordable one-way fares based on user searches. Data last updated 17 October 2025.

Thu 18/1221:00OTP - LHR

Nonstop3h 30mBritish Airways

Deal found 15/10£39

Tue 3/208:00OTP - LHR

Nonstop3h 50mBritish Airways

Deal found 16/10£39

Wed 19/1115:50OTP - LHR

Nonstop3h 40mBritish Airways

Deal found 15/10£40

Fri 12/1216:45OTP - LHR

Nonstop3h 30mBritish Airways

Deal found 15/10£41

Thu 5/221:00OTP - LHR

Nonstop3h 30mBritish Airways

Deal found 16/10£42

Wed 10/1215:50OTP - LHR

Nonstop3h 40mBritish Airways

Deal found 15/10£43

Fri 14/1120:20OTP - LHR

Nonstop3h 30mBritish Airways

Deal found 16/10£45

Sat 29/1112:05SOF - LHR

Nonstop3h 45mBritish Airways

Deal found 15/10£45

Sun 1/207:35OTP - LHR

Nonstop3h 50mBritish Airways

Deal found 14/10£46

Mon 2/220:25OTP - LHR

Nonstop3h 30mBritish Airways

Deal found 16/10£47

Sun 23/1107:35OTP - LHR

Nonstop3h 50mBritish Airways

Deal found 16/10£48

Wed 14/121:00SOF - LHR

Nonstop3h 30mBritish Airways

Deal found 16/10£51

Cheap flight deals from Southeast Europe to Heathrow

Round-trip from	£86
One-way from	£39
Popular in	July
Cheapest in	March
Average price	£118

British Airways
16/2-21/2
Nonstop
6h 55m total
Southeast Europe to London

Search Deals

British Airways
18/12
Nonstop
3h 30m total
Southeast Europe to London

Search Deals

Highest demand for flights based on searches. 20% potential increase in price (£20 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£3 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Southeast Europe to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BucharestLondon

OTP - LHR

OTPLHR

Bucharest Otopeni Intl

Wed 3/12

15:50-17:30

Nonstop3h 40m

London Heathrow

Mon 12/1

18:30-23:45

Nonstop3h 15m

£98

BucharestLondon

OTP - LHR

OTPLHR

Bucharest Otopeni Intl

Mon 24/11

08:05-10:00

Nonstop3h 55m

London Heathrow

Wed 26/11

17:40-22:55

Nonstop3h 15m

£104

BucharestLondon

OTP - LHR

OTPLHR

Bucharest Otopeni Intl

Fri 14/11

20:20-21:50

Nonstop3h 30m

London Heathrow

Fri 21/11

18:30-23:45

Nonstop3h 15m

£105

BucharestLondon

OTP - LHR

OTPLHR

Bucharest Otopeni Intl

Wed 19/11

08:05-09:55

Nonstop3h 50m

London Heathrow

Wed 3/12

09:30-14:45

Nonstop3h 15m

£111

BucharestLondon

OTP - LHR

OTPLHR

Bucharest Otopeni Intl

Tue 3/3

08:00-09:50

Nonstop3h 50m

London Heathrow

Sat 7/3

18:10-23:25

Nonstop3h 15m

£112

BucharestLondon

OTP - LHR

OTPLHR

Bucharest Otopeni Intl

Mon 10/11

08:05-10:00

Nonstop3h 55m

London Heathrow

Sat 15/11

18:10-23:25

Nonstop3h 15m

£115

Cluj NapocaLondon

CLJ - LHR

CLJLHR

Cluj Napoca

Fri 28/11

18:00-22:00

1 stop6h 00m

London Heathrow

Mon 1/12

10:25-17:20

1 stop4h 55m

£127

SofiaLondon

SOF - LHR

SOFLHR

Sofia

Sat 11/4

05:00-12:30

1 stop9h 30m

London Heathrow

Sat 11/4

19:55-15:35

1 stop17h 40m

£127

SofiaLondon

SOF - LHR

SOFLHR

Sofia

Sat 29/11

12:05-13:50

Nonstop3h 45m

London Heathrow

Sat 6/12

22:15-19:30

1 stop19h 15m

£136

ThessalonikiLondon

SKG - LHR

SKGLHR

Thessaloniki Makedonia

Mon 16/3

07:55-21:15

1 stop15h 20m

London Heathrow

Sat 21/3

22:15-10:35

1 stop10h 20m

£138

Flights are sorted by cheapest return flights first.

Deals found on 16/10

Showing 1-10 of 60 results

...

Best time to book a flight from Southeast Europe to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Southeast Europe with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Southeast Europe to London Heathrow Airport

What is the cheapest month to book a flight from Southeast Europe to London Heathrow Airport?

Currently, December is the cheapest month in which you can book a flight from Southeast Europe to London Heathrow Airport (average of £26). Flying from Southeast Europe to London Heathrow Airport in May is currently the most expensive (average of £115). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YMH to LHR?

It’s optimal to fly from Southeast Europe to London Heathrow Airport in the evening. By choosing this option you can save up to 47% on the cost of your flight, compared to a flight at midday.

What is the cheapest day to fly from Southeast Europe to London Heathrow Airport?

Travellers seeking maximum savings on their Southeast Europe to London Heathrow Airport flight should consider departing on Sunday evenings when fares are most often at their lowest. Tuesday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Southeast Europe to London Heathrow Airport

The most flights from zzYMH to LHR are scheduled on a Wednesday (20 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

Reviews of airlines servicing Heathrow

Check out reviews from past customers who have flown with Aegean Airlines, Lufthansa, andBritish Airways from Southeast Europe to London Heathrow Airport to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Aegean Airlines

8.1

Very Good

811 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you

Aegean Airlines

8.1

Very Good

811 reviews

Aegean Airlines

8.1

Very Good

811 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you

Lufthansa

6.8

Okay

7,497 reviews

Aegean Airlines

8.1

Very Good

811 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you

British Airways

6.7

Okay

7,457 reviews

Aegean Airlines

8.1

Very Good

811 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you

Air Serbia

6.2

Okay

203 reviews

Aegean Airlines

8.1

Very Good

811 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you

Related info for your journey

How long is the flight from Southeast Europe to London Heathrow Airport?
For as low as £98, British Airways can have you in London Heathrow Airport from Southeast Europe in 3h 40m. The distance from Southeast Europe to London Heathrow Airport is about 1307 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines to fly from Southeast Europe to London Heathrow Airport one-way?
One-way options have recently been found by users for as low as £39 on British Airways. Other airlines that offer cheap prices include Aegean Airlines from £60 and Air Serbia from £64 one-way.
What are the most popular routes from Southeast Europe to London Heathrow Airport?
The most popular flight routes from Southeast Europe to London Heathrow Airport are Bucharest Otopeni Intl - London Heathrow, Athens Eleftherios V. - London Heathrow and Cluj Napoca - London Heathrow.
What are the most reliable airlines from Southeast Europe to London Heathrow Airport?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Southeast Europe to London Heathrow Airport on time: Air Canada (80%), Singapore Airlines (72%), Aegean Airlines (72%).
What are the cheapest flights from Southeast Europe to London Heathrow Airport?
While on average a flight from Southeast Europe to London Heathrow Airport is generally £187, our data shows the cheapest flight currently is £75. When looking at the most popular route, (Bucharest Otopeni Intl - London Heathrow), you can expect to pay £86 for that flight.
Can I find deals for flights from Southeast Europe to Heathrow that include hotel bookings?
Yes. In addition to deals on Southeast Europe to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Southeast Europe to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Southeast Europe to Heathrow.
Can I find deals for business class flights from Southeast Europe to Heathrow?
Yes. Cheapflights offers flight deals from Southeast Europe to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Southeast Europe to London Heathrow Airport?
Currently, December is the cheapest month in which you can book a flight from Southeast Europe to London Heathrow Airport (average of £26). Flying from Southeast Europe to London Heathrow Airport in May is currently the most expensive (average of £115). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Slough

Gatwick

Hounslow

Northampton

Luton

Wembley

Deal

Ilford

Crawley

Hayes

Watford

Winchester

Swindon

Chichester

Romford

Ipswich

Brentford

Dartford

Browse thousands of different options on Cheapflights for your next trip

Top 7 airlines flying from Southeast Europe to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
Air Serbia	Cheapest£92	Average£172	FlexibilityNo cancel fee	On-timeN/A	Search Air Serbia flights
Aegean Airlines	Cheapest£98	Average£196	FlexibilityNo cancel fee	On-time87%	Search Aegean Airlines flights
British Airways	Cheapest£98	Average£171	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Croatia Airlines	Cheapest£111	Average£250	FlexibilityNo cancel fee	On-time81%	Search Croatia Airlines flights
LOT	Cheapest£125	Average£172	FlexibilityNo cancel fee	On-time81%	Search LOT flights
Bulgaria Air	Cheapest£165	Average£199	FlexibilityNo cancel fee	On-time73%	Search Bulgaria Air flights
Lufthansa	Cheapest£284	Average£304	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights

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Cheap flights from Southeast Europe to London Heathrow Airport from £39

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/12. Fares are subject to change and may not be available on all flights or dates of travel.

Find flight deals from Southeast Europe to Heathrow

Cheapest flights from Southeast Europe to HeathrowExplore the most affordable flight options available from Southeast Europe to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 October 2025.

Explore the most affordable flight options available from Southeast Europe to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 October 2025.

Cheap flight deals from Southeast Europe to Heathrow

Keep the following information in mind while searching for Southeast Europe to Heathrow flight deals. Data was last updated 17 October 2025.

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Best time to book a flight from Southeast Europe to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Southeast Europe with our price prediction graph.

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Everything you need to know about your flight from Southeast Europe to London Heathrow Airport

What is the cheapest month to book a flight from Southeast Europe to London Heathrow Airport?

What is the cheapest time of day to fly from YMH to LHR?

Find hourly flight availability from Southeast Europe to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 October 2025.

What is the cheapest day to fly from Southeast Europe to London Heathrow Airport?

Use this chart to determine the cheapest time to fly return from Southeast Europe to Heathrow. Price data was last updated on 12 October 2025.

Weekly flight availability from Southeast Europe to London Heathrow Airport

Reviews of airlines servicing Heathrow

Related info for your journey

Find useful and relevant information for your journey from Southeast Europe to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Southeast Europe to London Heathrow Airport?

What are the cheapest airlines to fly from Southeast Europe to London Heathrow Airport one-way?

What are the most popular routes from Southeast Europe to London Heathrow Airport?

What are the most reliable airlines from Southeast Europe to London Heathrow Airport?

What are the cheapest flights from Southeast Europe to London Heathrow Airport?

Can I find deals for flights from Southeast Europe to Heathrow that include hotel bookings?

How can I find direct flights from Southeast Europe to Heathrow?

Can I find deals for business class flights from Southeast Europe to Heathrow?

What is the cheapest month to book a flight from Southeast Europe to London Heathrow Airport?

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Alternative routes for Southeast Europe to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from Southeast Europe to Heathrow

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How does Cheapflights help users find flights from Southeast Europe to Heathrow?

Why should you use Cheapflights to find cheap flight tickets from Southeast Europe to Heathrow?

Can Cheapflights find flights from Southeast Europe to Heathrow with no change fees?

Can Cheapflights notify me if prices for flights from Southeast Europe to Heathrow become cheaper?

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Cheapest flights from Southeast Europe to Heathrow
Explore the most affordable flight options available from Southeast Europe to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 October 2025.