£46 Find Cheap Flights from London Heathrow Airport to Southeast Europe

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Southeast Europe departing on 23/9. 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
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Southeast Europe

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Southeast Europe.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Southeast Europe.
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 26% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Booking Insights
Flights Deals

Cheap Flights from Heathrow to Southeast Europe

Cheapest return prices found by our users on KAYAK in the last 72 hours
Athens
Athensdirect£125
Tirana
Tirana1 stop£132
Heraklion
Heraklion1 stop£135
Corfu
Corfu1 stop£139
Split
Split1 stop£146
Sofia
Sofiadirect£126
Rhodes
Rhodes1 stop£141
Belgrade
Belgradedirect£92
Dubrovnik
Dubrovnik1 stop£151
Chania
Chania1 stop£162
Thessaloniki
Thessaloniki1 stop£162
Thera
Thera1 stop£145
Sarajevo
Sarajevo1 stop£162
Zakynthos
Zakynthos1 stop£179
Tivat
Tivat1 stop£148
Argostoli
Argostoli1 stop£187
Skopje
Skopje1 stop£151
Pristina
Pristina1 stop£184
Podgorica
Podgorica1 stop£148
Athens
Athensdirect£125
Tirana
Tirana1 stop£132
Heraklion
Heraklion1 stop£135
Corfu
Corfu1 stop£139
Split
Split1 stop£146
Sofia
Sofiadirect£126
Rhodes
Rhodes1 stop£141
Belgrade
Belgradedirect£92
Dubrovnik
Dubrovnik1 stop£151
Chania
Chania1 stop£162
Thessaloniki
Thessaloniki1 stop£162
Thera
Thera1 stop£145
Sarajevo
Sarajevo1 stop£162
Zakynthos
Zakynthos1 stop£179
Tivat
Tivat1 stop£148
Argostoli
Argostoli1 stop£187
Skopje
Skopje1 stop£151
Pristina
Pristina1 stop£184
Podgorica
Podgorica1 stop£148

Book Cheap Heathrow to Southeast Europe Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Southeast Europe that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Southeast Europe

Thu, 22 Jan - Sat, 24 Jan
British Airways Logo
10:30 - 15:45LHR-OTP
3h 15mdirect
British Airways Logo
08:05 - 10:00OTP-LHR
3h 55mdirect
£105British Airways
Find Deal
Tue, 20 Jan - Fri, 23 Jan
British Airways Logo
10:15 - 15:30LHR-OTP
3h 15mdirect
British Airways Logo
20:20 - 21:50OTP-LHR
3h 30mdirect
£107British Airways
Find Deal
Mon, 19 Jan - Sat, 24 Jan
Aegean Airlines Logo
19:00 - 00:35LHR-ATH
3h 35mdirect
Aegean Airlines Logo
19:10 - 21:15ATH-LHR
4h 05mdirect
£125Aegean Airlines
Find Deal
Fri, 7 Nov - Wed, 12 Nov
Aegean Airlines Logo
22:15 - 03:50LHR-ATH
3h 35mdirect
Aegean Airlines Logo
16:00 - 17:55ATH-LHR
3h 55mdirect
£129Aegean Airlines
Find Deal
Wed, 10 Sep - Wed, 17 Sep
Austrian Airlines Logo
10:25 - 20:40LHR-JMK
8h 15m1 stop
Austrian Airlines Logo
21:25 - 08:20JMK-LHR
12h 55m1 stop
£139Austrian Airlines
Find Deal
Wed, 24 Sep - Mon, 29 Sep
Austrian Airlines Logo
09:05 - 20:40LHR-JMK
9h 35m1 stop
Austrian Airlines Logo
21:25 - 08:45JMK-LHR
13h 20m1 stop
£141Austrian Airlines
Find Deal
Sun, 19 Oct - Thu, 23 Oct
Lufthansa Logo
07:25 - 16:15LHR-SPU
7h 50m1 stop
Lufthansa Logo
17:05 - 22:40SPU-LHR
6h 35m1 stop
£146Lufthansa
Find Deal
Mon, 20 Oct - Fri, 24 Oct
Lufthansa Logo
07:25 - 16:15LHR-SPU
7h 50m1 stop
Lufthansa Logo
11:15 - 19:40SPU-LHR
9h 25m1 stop
£147Lufthansa
Find Deal
Sun, 21 Sep - Fri, 26 Sep
Air Serbia Logo
19:25 - 02:10LHR-TIA
5h 45m1 stop
Air Serbia Logo
04:00 - 12:30TIA-LHR
9h 30m1 stop
£156Air Serbia
Find Deal
Tue, 16 Sep - Tue, 23 Sep
Air Serbia Logo
13:30 - 14:35LHR-SPU
24h 05m1 stop
Air Serbia Logo
15:20 - 12:30SPU-LHR
22h 10m1 stop
£156Air Serbia
Find Deal
Booking Insights

KAYAK's insights & trends for Heathrow to Southeast Europe flights

Get data-powered insights and trends into flights from Heathrow to Southeast Europe to help you find the cheapest flights, the best time to fly and much more.

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

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from London Heathrow Airport to Southeast Europe.

The cheapest ticket to Southeast Europe from London Heathrow Airport found in the last 72 hours was to Belgrade, at £52 return. The most popular route is from London Heathrow Airport (LHR) to Athens (ATH), and the cheapest round-trip airline ticket found on this route in the last 72 hours was £137.

Can I save money by flying with a stopover from London Heathrow Airport to Southeast Europe?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of £1,301, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Southeast Europe, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London Heathrow Airport to Southeast Europe is January, when tickets cost £145 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of return tickets is £291 and £283 respectively.

What’s the cheapest day of the week to fly from London Heathrow Airport to Southeast Europe?

The average price of all round-trip flights from London Heathrow Airport to Southeast Europe clicked on KAYAK for each day over the last 12 months.

For London Heathrow Airport to Southeast Europe, Wednesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Southeast Europe back to London Heathrow Airport, the best deals are generally found on Thursday, with Monday being the most expensive.

How far in advance should I book a flight from London Heathrow Airport to Southeast Europe?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London Heathrow Airport to Southeast Europe, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from London Heathrow Airport to Southeast Europe, you should book around 4 weeks before departure, which saves you about 12% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.


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

Low seasonJanuary
Cheapest flight£46
Best time to beat the crowds (28% less expensive on average)
Most popular time to fly (29% more expensive on average)
Flight from London Heathrow Airport to Athens

FAQs - booking Southeast Europe flights

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

    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 London Heathrow Airport to Southeast Europe.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to Southeast Europe?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London Heathrow Airport to 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 London Heathrow Airport to Southeast Europe?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from London Heathrow Airport to Southeast Europe with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport to Southeast Europe?

    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 from London Heathrow Airport to Southeast Europe up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Southeast Europe?

    The cheapest time of day to fly to Southeast Europe is generally at night, when retur flights cost £357 on average. Morning departures are around 12% cheaper than evening flights, on average. The most expensive time of day to fly to Southeast Europe is generally in the evening, which is peak travel time and where the average cost of a ticket is £443.

Reviews of the top 5 airlines flying from Heathrow to Southeast Europe

 
See real verified KAYAK customer reviews for airlines flying from London to Southeast Europe. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Heathrow to Southeast Europe? 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.
8.1
Aegean AirlinesOverall score based on 781 reviews
7.9Comfort
7.8Boarding
7.4Food
8.6Crew
7.0Entertainment
Airline reviews

Short flight. Was not told if there was a kosher option for the snack.

10.0 ExcellentMarian, Jul 2025SKG - MUC
Read more Aegean Airlines reviews

Short flight. Was not told if there was a kosher option for the snack.

Lost my bagage on the first leg of our trip. Not even on the transfer but on the first flight they didnt put our bagage

The crew aboard Aegean were excellent, they picked on our son’s anxiety and immediately came to the rescue to see what they could do to make it go away.

My experience with a GNA was extremely poor. My original flight was canceled. They put me on another flight. Four hours later. They changed my seat number to the last row where I had no room at all and it cost me $120 for luggage. Additionally, I missed my ferry in Paris Athens. I had to rebook my ferry and I could not get a refund so by them canceling the trip for four hours it caused me no ferry to go to Betsy. I had to find a room that night. The only one I could find was at the Hyatt grand in Athens And I lost a night. Stay at Betsy that I had already prepaid so no my experience was awful. Additionally, they never said on any intercom that Greece was one hour ahead of Paris so that was a problem. We had no idea and when it was never communicated to us

Ove Aegean Airlines! Used them for several flights over past 4.months. never flown w them before but will certainly use in the future!!!

A thoroughly enjoyable experience in business class, which we “won” in the airlines lottery In exchange for a relatively small deposit. The breakfast served at the beginning of this three hour flight was absolutely phenomenal. I would be tempted to fly Aegean airlines on a transatlantic flight in light of this experience.

Was grateful that this flight was held for us as we were late from our prior flight.

Our connecting flight from Barcelona to Athens was late and it appeared that we would not make the connectimg flight to Telaviv. The plane ended up waiting and we made the connection. The airline redeemed itself.

Lovely experience with Aegean. The crew felt with some extremely rude customers with professionalism and poise. The flight went off without a hitch and even landed early!

When a flight has a delay of about an hour it is customary to announce the passengers

Austrian Airlines help and service was fine, but Kayak misled us into believing we had purchased a Business Class ticket. In fact, the tickets were only upgraded Coach Class tickets with luggage restrictions that belonged to the Coach Class. Very disappointed! Paid over $$$$ 9K for the two tickets. Very disappointing!

Quick and organized boarding process, friendly staff but not as many snacks and drinks as the previous flight overnight

Landing was a little hard. Food was not great. No options.

Five star experience all around except for my seat, which was broken. It would only go down 70%.Of the way. It defeats the purpose of buying a business class ticket if you don’t actually get to lay flat..

I love this airline.God bless CAO and the whole staff of this company

Great staff, efficient and knowledgeable. Very helpful with others and considerate towards those with children

WiFi would have been nice and some more powerful usb ports, available ports could not keep my phone’s charge much less charge the phone.

Tirana was crazy check in and getting bussed to another gate. Both Germany stops were intensive customs but organized, but that wasn't the airlines problem. The crews were fabulous on the planes. The announcements were not easy to understand in English, slurred speech. Customs inthe US were fast. We waited for luggage, three later arriving planes had their luggage and left before us

Business class old style from 10 years ago. Ok for short flights but nor for 12 hours journey. The passenger near the window have to jump over the passenger seat aisle side or wake him up to upright the seat. That’s not the business class that you expect on long night flight. Seats are not so confortable. And believe it or not no wifi!

We have travelled on 13 December with Austrian Airlines from Yangon through Bangkok and Vienna to Varna. The first flight operated by Thai Airlines was nice and comfortable. I wouldn’t say the same thing about the next two flights which were operated directly by the Austrian Airlines. During our flight from Bangkok to Vienna:  > The service was very poor – serving of food and drinks was disorganized, late and not combined, the stewards were walking back and forth without doing anything substantial for the passengers. Even the morning breakfast was very late with a cup of coffee almost while landing (after a reminding).  > The food itself was OK-ish but for a 12-hour flight, there were no snacks/bites in between dinner and breakfast as it is with the other airlines.  > The cutlery was wooden, most probably recycling, but very unpleasant to eat with.  > The stewards were not rude but not friendly and/or helpful  > And also, half of the passengers had travel sets, others did not. The flight from Vienna to Varna was another surprise: firstly, the flight was late and secondly, they were serving only water free, even the coffee was paid, so were the snacks, but we had to pay to reserve seats. The whole experience is as if it was a low-cost airline. All in all, I wouldn’t recommend using the services of Austrian Airlines: the ticket prizes are quite the same as of the other carriers flying to this destination and you would have much pleasant time.

I fly to Germany every year and prefer the most direct flight routes. Lufthansa offers this route, allowing me to fly from my home airport directly to Germany. The food and service were excellent. The staff was most accommodating, very professional, and friendly. The only issue I did not care for was the seating arrangement. I fly business and did not appreciate the configuration of the business class. Understandably, you will always have someone seated next to you, but then install a separation screen to allow for a little more privacy. United and British Airways are miles ahead in creating a more personal space. Lufthansa should do better.

The plane was late (as was my flight out from Birmingham the day before)

We had almost a 6 hr delay, primarily due to weather, the e problem was that they communicated this delay and its length very poorly. The boarding was chaotic - even though they had hours to figure it out! The plane was an old 747 whose touch screens barely worked and there was a faulty USB port under my seat rest (something that wasn't labeled as being there) They organized my delayed luggage well. And I could get updates on the Lufthansa website. My shirt connecting flight charged for everything except water. Coffee was over 3€

The entertainment screens need to be updated. Very difficult to navigate through with old equipment.

The flight was delayed by an hour. Made the connection uncomfortably tight.

It would have been nice if my luggage had made it onto my connecting flight as well. Now I have to wait for my luggage to be delivered and that might take a while, which certainly put a damper on the entire experience.

The flight was cancelled due to tech problem with the plane

When we went to the lounge they told us to go into the main lounge and not the full business class section, later they told me that Lufthansa wont pay the full fee to alloq the business class passengers entry to the nicer sectikn where all the other airlines nusiness class passengers go into. Very poor arrangement.

Not what I expected for the last leg of a $5100 business class experience. Boarding was a nightmare. The flight was delayed and I had to keep checking my email to ensure I was at the right gate since the airline or the terminal had no clue until 15 mins prior to boarding. Food was gross, limited drink options.

Flights scheduled with impossible connections - Lufthansa apparently believes it takes 7mins to change terminals, go through passport control, re-clear security and walk 1.8kms…..and everything will work perfectly (which it never does at Frankfurt). No staff on hand to assist with transfers on delayed flights. No transfer guidance provided by app. No compensation offered for 6hr delay to connecting flight.

Everything about the flight check-in was smooth no line the plane is clean and bathroom

Excellent everywhere but Philly, the most rotten airport in the world.

Check in was not the greatest as had to talk to an agent to clarify things and then he transferred us to another agent who had difficulty processing my credit card as there was a system glitch and not a card error.

All good. Loo’s weren’t great and as clean as i would like.

A great flight. The crew was excellent too. Of particular note of excellence was the gluten-free meal which was one of the best offerings I’ve ever had on a plane. Outstanding work, BA chefs.

I was put into business class. Wow! My flight attendant was great! The food amazing’

I got stuffed on both flights into terrible seats. Second flight the seat didn’t even recline and fit s tall person, that’s very uncomfortable.

I arrived at Bridgetown only to fins that a suitcase was missing. It was left at Manchester. I had to wait wait 2 days before deciding on going to collect from the airport personally. I am not happy about paying for baggage at the airport. This I thought was included in the price of the ticket. Who goes away for 2 weeks and does not bring luggage. This was a total rip off and I am not happy. I need someone to contact me before returning so that I don't have to pay all over again to return homde.

Boarding market okay just because of the delay we had, but not related to the crew in any way…

Not so good with their baggage handling as they damaged one of my check in luggage

It's the shortest trip one could get from BEG anywhere, so it was fine.

I paid for luggage when I bought the ticket but I could not board until I paid for luggage again. The fault lays at the feet of eDreams, the company that booked our flight. Sorry, Air Serbia, but it did affect the boarding process.

They had lost my ticket and despite showing them the confirmation email with the itinerary and receipt of payment for the flight they could not put me on that flight and rescheduled departure postponing it by a whole week

Kraljevo is very convenient airport. It's brand new, small.and efficient. Great job!

Long delay (6 hour late departure, not informative enough to provide up to date info on flight, poor food quality

Plane was late causing me to miss connection. Flight the next late causing me to miss the rebooked connection. Air seberia I think is more late than on time

Plane was old. Seats were hard and very close together. No in flight entertainment.

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.

Everything you need to know for your flight to Southeast Europe

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.