£56 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 16/4. 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£107
Tirana
Tiranadirect£102
Corfu
Corfu1 stop£136
Heraklion
Heraklion1 stop£136
Sofia
Sofiadirect£107
Split
Split1 stop£129
Rhodes
Rhodes1 stop£162
Chania
Chaniadirect£165
Belgrade
Belgrade1 stop£151
Dubrovnik
Dubrovnik1 stop£138
Thessaloniki
Thessaloniki1 stop£138
Zakynthos
Zakynthos1 stop£179
Thera
Thera1 stop£167
Argostoli
Argostolidirect£171
Tivat
Tivat1 stop£156
Ljubljana
Ljubljana1 stop£140
Kos
Kos1 stop£164
Mykonos
Mykonos1 stop£136
Sarajevo
Sarajevo1 stop£159
Athens
Athensdirect£107
Tirana
Tiranadirect£102
Corfu
Corfu1 stop£136
Heraklion
Heraklion1 stop£136
Sofia
Sofiadirect£107
Split
Split1 stop£129
Rhodes
Rhodes1 stop£162
Chania
Chaniadirect£165
Belgrade
Belgrade1 stop£151
Dubrovnik
Dubrovnik1 stop£138
Thessaloniki
Thessaloniki1 stop£138
Zakynthos
Zakynthos1 stop£179
Thera
Thera1 stop£167
Argostoli
Argostolidirect£171
Tivat
Tivat1 stop£156
Ljubljana
Ljubljana1 stop£140
Kos
Kos1 stop£164
Mykonos
Mykonos1 stop£136
Sarajevo
Sarajevo1 stop£159

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

Mon, 9 Mar - Tue, 10 Mar
British Airways Logo
18:30 - 23:45
LHR
-
OTP
3h 15mdirect
British Airways Logo
16:40 - 18:10
OTP
-
LHR
3h 30mdirect
£96British Airways
Fri, 13 Mar - Sat, 14 Mar
British Airways Logo
18:30 - 23:45
LHR
-
OTP
3h 15mdirect
British Airways Logo
08:05 - 10:00
OTP
-
LHR
3h 55mdirect
£97British Airways
Tue, 10 Mar - Mon, 16 Mar
Aegean Airlines Logo
19:00 - 00:35
LHR
-
ATH
3h 35mdirect
Aegean Airlines Logo
16:00 - 17:55
ATH
-
LHR
3h 55mdirect
£107Aegean Airlines
Tue, 3 Mar - Sat, 7 Mar
Aegean Airlines Logo
19:00 - 00:35
LHR
-
ATH
3h 35mdirect
Aegean Airlines Logo
19:10 - 21:15
ATH
-
LHR
4h 05mdirect
£108Aegean Airlines
Tue, 14 Apr - Tue, 21 Apr
SWISS Logo
20:05 - 09:40
LHR
-
HER
11h 35m
1 stop
SWISS Logo
20:50 - 07:55
HER
-
LHR
13h 05m
1 stop
£136SWISS
Tue, 14 Apr - Tue, 21 Apr
SWISS Logo
18:40 - 16:15
LHR
-
CFU
19h 35m
1 stop
SWISS Logo
20:00 - 07:55
CFU
-
LHR
13h 55m
1 stop
£136SWISS
Sat, 16 May - Sat, 23 May
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
£138Austrian Airlines
Fri, 27 Feb - Mon, 2 Mar
Lufthansa Logo
08:45 - 19:30
LHR
-
LJU
9h 45m
1 stop
Lufthansa Logo
20:10 - 22:55
LJU
-
LHR
3h 45m
1 stop
£140Lufthansa
Fri, 27 Feb - Fri, 6 Mar
Lufthansa Logo
08:45 - 19:30
LHR
-
LJU
9h 45m
1 stop
Lufthansa Logo
09:45 - 15:50
LJU
-
LHR
7h 05m
1 stop
£141Lufthansa
Wed, 4 Mar - Sat, 7 Mar
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
£145Austrian Airlines
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 Zagreb, at £76 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 £119.

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 £372, 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 £138 (return) on average. On the other hand, the most expensive months are July and August, when the average cost of return tickets is £270 and £268 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 2 weeks before departure, which saves you about 5% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

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

Low seasonJanuary
Cheapest flight£56
Best time to beat the crowds (25% less expensive on average)
Most popular time to fly (26% more expensive on average)
Flight from London Heathrow Airport to Bucharest

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 in the afternoon, when retur flights cost £247 on average. Morning departures are around 22% 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 £340.

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

Aegean Airlines was great! Great spirit, very helpful and efficient. Overall Aegean Airlines was a great experience.

8.0 ExcellentAnonymous, Jan 2026
HER - ATH
Read more Aegean Airlines reviews

Aegean Airlines was great! Great spirit, very helpful and efficient. Overall Aegean Airlines was a great experience.

The flight was excellent but the onboard WiFi wasn’t working.

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.

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

We were delayed three hours from Montenegro to Vienna on our outbound flight and then rebooked an extra leg on our trip to the US. Our bags, which Austrian made us check in in Montenegro even though the flight was barely half full, didn't find us for ten days. Then, when we asked for compensation for the delay we were given the runaround that the flight originated outside of the EU. Next time we fly Turkish Air.

My Austrian Air flight from Montenegro to Vienna was delayed by three hours because their plane de-icer was broken and they had to wait for the sun to come up before the ice could melt. This meant we missed our United flight altogether. So I can't speak about United, but I was not impressed by Austrian Air. They made us check in two carry on bags for a 60% full flight, and the bags didn't find us in the US for ten days. The re-routing they arranged included an extra leg, a midnight taxi ride across New Jersey and New York, and a five hour sleep in a hotel. Not impressed.

Most of the crew members were rude, flight arrived late and we missed our connecting flight, they damaged my friends suitcase so badly that two wheels had been destroyed.

Excellent flight. The crew was exceptionally attentive and organized. Attention to details is unmatched.

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.

Boarding was by group and we had to take the bus. There were no elevators so had to walk down the stairs. It would help to have escalators or elevators. Note I had a special needs child and the gate crew was rushing us in. The bus was full but we were packed with no seats to sit.

Layover time was not sufficient as the gate was too far, I had to literally run and was out of my breath. This was main drawback. The crew was wonderful and so is their service. I loved interacting with them.

Late flight Delays Poor service Poor staff Worst airline ever

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.

I was unable to board this flight because of visa changes that I was not alerted about and I’ve been unable to contact Kayak to obtain a refund / credit anything.

My touch screen at my seat wasn't working, the films BA advertised on the website for this flight were not available, and the plane was a little dated, food was good and the staff were good, just let down by the aircraft facilities.

Did not like the seating configuration at all with 2+3+2 in business class. Lacking total privacy and comfort

Check-in experience, for business call please provide a premium experience

Lost my luggage, ran out of food choices in business class, ground crew was completely unapologetic.

Excellent. The crew and flight were great. Checking in was easy and everyone was very helpful.

Late. And service was very slow - passengers sat for well over an hour with dirty trays etc surrounding them

Entertainment devices on A380 need to be fixed, the seats might do with updates.

I like everything about British Airways. Excellence. Perfect. Exquisite service.

The plane was dirty the food was awful and the boarding process took too long

Boarding and flight itself was smooth and temperature during the flight was perfect. It was just overall vibe for long distance flight, felt cheap ( comparing to KLM or TUI that I used recently). Entertainment out of date movies with poor picture quality, no games, flight map wasn't working

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!

Everything you need to know for your flight to Southeast Europe

Information on your arrival and departure airports