£50 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 8/1. 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, 0 bags

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.
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Flight Deals

Cheap Flights from Heathrow to Southeast Europe

Cheapest return prices found by our users on KAYAK in the last 72 hours
Athens
Athensdirect£90
Tirana
Tiranadirect£111
Heraklion
Heraklion1 stop£141
Corfu
Corfudirect£144
Sofia
Sofiadirect£102
Split
Split1 stop£128
Rhodes
Rhodes1 stop£148
Belgrade
Belgradedirect£137
Dubrovnik
Dubrovnik1 stop£150
Chania
Chania1 stop£179
Thessaloniki
Thessaloniki1 stop£159
Thera
Thera1 stop£192
Zakynthos
Zakynthos1 stop£228
Tivat
Tivat1 stop£190
Sarajevo
Sarajevo1 stop£166
Argostoli
Argostoli1 stop£166
Kos
Kos1 stop£169
Ljubljana
Ljubljana1 stop£139
Pristina
Pristina1 stop£178
Athens
Athensdirect£90
Tirana
Tiranadirect£111
Heraklion
Heraklion1 stop£141
Corfu
Corfudirect£144
Sofia
Sofiadirect£102
Split
Split1 stop£128
Rhodes
Rhodes1 stop£148
Belgrade
Belgradedirect£137
Dubrovnik
Dubrovnik1 stop£150
Chania
Chania1 stop£179
Thessaloniki
Thessaloniki1 stop£159
Thera
Thera1 stop£192
Zakynthos
Zakynthos1 stop£228
Tivat
Tivat1 stop£190
Sarajevo
Sarajevo1 stop£166
Argostoli
Argostoli1 stop£166
Kos
Kos1 stop£169
Ljubljana
Ljubljana1 stop£139
Pristina
Pristina1 stop£178

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, 29 Jan - Thu, 12 Feb
Aegean Airlines Logo
22:15 - 03:50LHR-ATH
3h 35mdirect
Aegean Airlines Logo
19:10 - 21:15ATH-LHR
4h 05mdirect
£86Aegean Airlines
Find Deal
Thu, 5 Feb - Mon, 9 Feb
Aegean Airlines Logo
22:15 - 03:50LHR-ATH
3h 35mdirect
Aegean Airlines Logo
19:10 - 21:15ATH-LHR
4h 05mdirect
£90Aegean Airlines
Find Deal
Tue, 20 Jan - Thu, 29 Jan
British Airways Logo
17:45 - 23:00LHR-OTP
3h 15mdirect
British Airways Logo
21:00 - 22:30OTP-LHR
3h 30mdirect
£98British Airways
Find Deal
Sat, 17 Jan - Sat, 24 Jan
British Airways Logo
09:55 - 15:10LHR-OTP
3h 15mdirect
British Airways Logo
16:00 - 17:40OTP-LHR
3h 40mdirect
£99British Airways
Find Deal
Fri, 27 Feb - Sun, 1 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
Thu, 11 Dec - Thu, 18 Dec
Lufthansa Logo
07:40 - 12:40LHR-LJU
4h 00m1 stop
Lufthansa Logo
13:20 - 19:35LJU-LHR
7h 15m1 stop
£139Lufthansa
Find Deal
Thu, 11 Dec - Thu, 18 Dec
Lufthansa Logo
08:45 - 19:30LHR-LJU
9h 45m1 stop
Lufthansa Logo
20:10 - 22:55LJU-LHR
3h 45m1 stop
£142Lufthansa
Find Deal
Wed, 26 Nov - Wed, 3 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
Sat, 15 Nov - Wed, 19 Nov
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
Wed, 26 Nov - Wed, 3 Dec
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
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?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Southeast Europe from London Heathrow Airport found in the last 72 hours was to Belgrade, at £99 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 £134.

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 £390, 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 February, when tickets cost £153 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of return tickets is £285 and £282 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 Wednesday 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 2 weeks before departure, which saves you about 6% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

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

Low seasonJanuary
Cheapest flight£50
Best time to beat the crowds (28% less expensive on average)
Most popular time to fly (20% 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 £272 on average. Morning departures are around 13% 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 £344.

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 814 reviews
7.9Comfort
7.8Boarding
7.4Food
6.9Entertainment
8.6Crew
Airline reviews

The seat was hard as a rock. Business class seats were coach seats with no one in the middle. Service and food were excellent.

8.0 ExcellentAnonymous, Oct 2025MXP - ATH
Read more Aegean Airlines reviews

The seat was hard as a rock. Business class seats were coach seats with no one in the middle. Service and food were excellent.

The crew was awesome. There was a school group of about 60 14 year-olds. The food is standard greek fare, Baklava was pre-packaged like it would normally be sold in a vending machine, and it was the highlight of the meal. Plane was in great shape, and seating was like a any A319 you would experience at a national-level carrier (i.e. not like Ryan Air). Like many European airports, they bused us to the plane, so the process of boarding groups is useless, and not well understood by infrequent travelers.

Departing from the Parikia apport on Paros was chaos. It is a 3rd world airport, and my home has more square footage. Olympic Air has several instances where there are less than two hours between flights leaving Paros. Further, there are two airlines at the airport, so airport resources are limited. With only one check in desk for each airline, the folks who are getting on the earlier flight are the only people who are able to check in. So, don't get there too early to check in. Also, the airport waiting area, after you go through security only holds about 1/2 of a plane's worth of people. So, the security line also has the same restrictions as the check in desks. Depending upon what time you get there, two queues will extend into the entry road. If your plan departs within the hour, go up to the front of the building and check to see which flight they are checking in or running through security.

Every one was attentive, the food was really very good . All and all was an excellent experience .

There was no enterteinment onboard. Food was good, and service too.

It was a short flight. It did leave about 15 minutes late but other than that everything went well!! There was no food service or entertainment so can’t comment on any of that.

Not good, the seat was broken and the middle seat table was not lowering, no option on the food, despite the business class wasn’t full. In the menu offered they had fish or chicken, no chicken available when was my turn (seating in raw 2!)

For a quick trip to athens they did a great job plane was spacious, and we boarded quickly.

it was hard to find the check in at the airport no signs food was average

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

Great! They got my vegetarian meal right, flight was comfortable, they helped store my heavy luggage. Pleasant crew and flight staff.

I did wish they would give us the entire little bottle Bailey's instead of just have 1/2 bottle at a time

My layover in Vienna was supposed to be 35 minutes but because my flight was canceled I had to wait in the airport for an additional 8 hours.

Very limited legroom in a 10 hour flight.very old plane.

The flight was delayed for 30 minutes with no apparent reason. There is no entertainment at all, and no USB or electric outlets for charging your phone or tablet.

They had me unpack a handbag 2 lbs overweight into another handbag 8 lbs underweight for a Bible.

My flight was canceled and even though I paid אם KAYAK you didn't even answer me and obviously didn't refund my money. I will never buy a ticket through you again.

One thing I really liked about Austrian Airlines was that the flight attendants were very kind, and the in-flight entertainment offered many choices. One thing that could be improved is the meal service, since only a vegetarian option was offered — it would be better to have at least two choices.

Despite the booked seats in front of the land we were moved to the back of the plane even first like 8 lines were totally without pasangers. When I tried to sit on empty seat flight attendant asked me to go to my dedicated seat in the fully crowded back of the plane. She was not able to explain why. Food was very poor on flight LAX - VIE.

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!

Paid for exit row at the back of the plane. Window seat with lots of leg space. Food was inedible (as usual). Brought my own.

Efficiency of staff, and comfort and cleanliness of aircraft was all great. Maybe a hot drink without payment at that time in the morning would be good!

Both flights were delayed over 1 hour. And I had to pay for seats, even though my reservation supposedly included free seat selection.

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€

Very small and uncomfortable seats, Hard to hear entertainment system sound. Horrible food. Staff doesn't care much about the passengers. 2nd time they didn't give me my vegetarian meal. They asked me regular food with meat. The airline and staff was from United airlines.

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

We always use BA due to the direct flight options, we have always had a pleasant flight with BA.

There might be more food options for people who can't eat so much starch/sugar/bread/rice. Meat, cheese, walnuts/pecans for snack, maybe jerky or other kinds of meat-based snacks would be better than bread and rice and sweets. I had an extra chardonnay, which was fine. The entertainment was great.

Unfortunately, my flight was cancelled because of some sort of emergency over the Atlantic and had to return to London. While I think British Airways made every effort to mitigate the situation, I must say it was still pretty unpleasant. I do appreciate the fact, however, that British Airways put my safety first…and I think the effort to correct a bad situation was very sincere. But I think the process might be handled better in future.

Horrible leg room - coach seating with empty seat in middle on a 3 across seating. You buy business class for comfort which includes leg room. Absolutely no entertainment options either. Awful experience

Crew service was poor and very little difference between premium economy and economy. Disappointed.

My bags never made it on the flight and I now have to wait for them to arrive hopefully tomorrow. You can’t even track your bags in the app to see where they are since they didn’t arrive. You have to file a claim and then wait for them to inform you when you will receive your bag. We were already delayed for an hour due to baggage so I don’t understand how my bag didn’t make the flight.

One of the worst experience given the middle seat even asked for the change no one honored,boarded at the end and overall one of the worst experience

No WiFi in either flight. No leg room, the seat in front of me left dents on my knees and the tray was so low my knees propped it up if I tried to use it.

It was good although our flight to the UK was cancelled and rescheduled for two days later. This was after we were already seated on the plane. We missed the first leg of our trip. BA did put us up at a hotel and paid for our meals but we lost our hotel costs in Glasgow.

The crew was very nice and pleasant. We were very reluctant to book our flight with British Airlines because we had bad experience with their flight attendants on the previous trips, they were rude and not helpful.

Basic, 737 Boeing, business class is just an economy class seat with blocked middle seat (European standard).

Entertainment is nonexistent. Food might have been good, however due to language barriers I didn’t get to have any food. Flat bed seats and layout was excellent. Crew efficient and straightforward, but lacking any western style approach. Not that I’d expect anything else, but one could have hoped.

Unorganized, late and they lost my bag for several days.

Flight took very long to even get checked in for, everything was late and written out by hand. My luggage was lost for several days and it was the most unorganized flight experience of my life.

Delaying more than 5 hours from Belgrade to Tirana Information very rude to questions

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

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