How long is the flight from London Heathrow Airport to Slovenia?

A quick flight from London Heathrow Airport to Slovenia can take about 11h 50m. Air Serbia provides one of the quickest options available for as low as £183. The distance from London Heathrow Airport to Slovenia is about 766 mi. This flight may include one or multiple stops.

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

If weather is an important factor for your trip to Slovenia, 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 19.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

What are the cheapest flights from London Heathrow Airport to Slovenia?

The cheapest flight price from London Heathrow Airport to Slovenia is £140. On average you can expect to pay £219. The most popular route, (London Heathrow - Ljubljana Joze Pucnik), can usually be booked for £132.

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

Before booking your flight from London Heathrow Airport to Slovenia check out the most popular airlines for this route: British Airways, Lufthansa or SWISS.

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

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

How can I find direct flights from Heathrow to Slovenia?

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

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

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

£85+ Cheap Flights from London Heathrow Airport to Slovenia

Cheap flight deals from Heathrow to Slovenia

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Heathrow to Slovenia
Explore the most affordable flight options available from Heathrow to Slovenia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 September 2026.

Thu 17/1209:55 -

1 stop6h 10m

Sun 20/1221:20 -

1 stop12h 50m

Deal found 27/9£132

Sun 13/1209:55 -

1 stop9h 35m

Sun 20/1221:20 -

1 stop12h 50m

Deal found 27/9£134

Mon 12/1011:00 -

Nonstop2h 15m

Fri 23/1021:15 -

Nonstop2h 20m

Deal found 23/9£149

Wed 4/1113:30 -

1 stop6h 50m

Wed 11/1106:40 -

1 stop9h 05m

Deal found 26/9£161

Wed 4/1115:30 -

1 stop4h 50m

Sat 14/1106:40 -

1 stop5h 05m

Deal found 26/9£162

Fri 13/1115:30 -

1 stop4h 50m

Mon 16/1110:45 -

1 stop5h 00m

Deal found 24/9£163

Mon 19/1011:00 -

Nonstop2h 15m

Fri 23/1021:15 -

Nonstop2h 20m

Deal found 24/9£167

Wed 18/1120:50 -

1 stop19h 15m

Sun 22/1121:20 -

1 stop12h 50m

Deal found 27/9£168

Mon 23/1113:20 -

1 stop18h 40m

Tue 1/1220:45 -

1 stop16h 35m

Deal found 25/9£168

Mon 9/1106:50 -

1 stop5h 15m

Mon 16/1110:45 -

1 stop7h 05m

Deal found 25/9£169

Find flight deals from Heathrow to Slovenia

Round-trip from	£132
One-way from	£85
Popular in	August
Cheapest in	January
Average price	£261
Good round-trip deal	£179 or less

Vueling
17/12-20/12
2 total stops
19h 00m total
London to Slovenia

Search Deals

British Airways
19/10-31/12
Nonstop
2h 15m total
London to Slovenia

Search Deals

Highest demand for flights based on searches. 29% potential increase in price (£59 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£7 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Price to beat on a round-trip flight from London Heathrow to Slovenia.

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonLjubljana

LHR London Heathrow - LJU Ljubljana Joze Pucnik

LHRLJU

London Heathrow

Wed 25/11

13:20-19:55

1 stop5h 35m

Ljubljana Joze Pucnik

Wed 31/12

00:00-00:00

Nonstop0h 00m

£99

LondonLjubljana

LHR London Heathrow - LJU Ljubljana Joze Pucnik

LHRLJU

London Heathrow

Thu 29/10

13:20-14:25

1 stop24h 05m

Ljubljana Joze Pucnik

Wed 31/12

00:00-00:00

Nonstop0h 00m

£100

LondonLjubljana

LHR London Heathrow - LJU Ljubljana Joze Pucnik

LHRLJU

London Heathrow

Mon 9/11

13:20-09:00

1 stop18h 40m

Ljubljana Joze Pucnik

Wed 31/12

00:00-00:00

Nonstop0h 00m

£100

LondonLjubljana

LHR London Heathrow - LJU Ljubljana Joze Pucnik

LHRLJU

London Heathrow

Thu 19/11

13:20-14:25

1 stop24h 05m

Ljubljana Joze Pucnik

Wed 31/12

00:00-00:00

Nonstop0h 00m

£100

LondonLjubljana

LHR London Heathrow - LJU Ljubljana Joze Pucnik

LHRLJU

London Heathrow

Wed 28/10

13:20-09:00

1 stop18h 40m

Ljubljana Joze Pucnik

Wed 31/12

00:00-00:00

Nonstop0h 00m

£100

LondonLjubljana

LHR London Heathrow - LJU Ljubljana Joze Pucnik

LHRLJU

London Heathrow

Fri 27/11

17:50-12:10

1 stop17h 20m

Ljubljana Joze Pucnik

Wed 31/12

00:00-00:00

Nonstop0h 00m

£103

Fastest return journey

LondonLjubljana

LHR London Heathrow - LJU Ljubljana Joze Pucnik

LHRLJU

London Heathrow

Fri 25/12

06:30-12:20

1 stop4h 50m

Ljubljana Joze Pucnik

Wed 31/12

00:00-00:00

Nonstop0h 00m

£103

LondonLjubljana

LHR London Heathrow - LJU Ljubljana Joze Pucnik

LHRLJU

London Heathrow

Mon 9/11

09:55-09:30

2 stops22h 35m

Ljubljana Joze Pucnik

Wed 31/12

00:00-00:00

Nonstop0h 00m

£114

LondonLjubljana

LHR London Heathrow - LJU Ljubljana Joze Pucnik

LHRLJU

London Heathrow

Tue 24/11

20:25-11:40

2 stops14h 15m

Ljubljana Joze Pucnik

Wed 31/12

00:00-00:00

Nonstop0h 00m

£117

LondonLjubljana

LHR London Heathrow - LJU Ljubljana Joze Pucnik

LHRLJU

London Heathrow

Wed 11/11

13:20-09:00

1 stop18h 40m

Ljubljana Joze Pucnik

Wed 18/11

09:30-12:20

1 stop27h 50m

£168

Flights are sorted by cheapest return flights first.

Deals found on 27/9

Showing 1-10 of 19 resultsSorted by cheapest first

Best time to book a flight from Heathrow to Slovenia

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

LHR-LJU

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 London Heathrow Airport to Slovenia

LHR-SI0

LHR-LJU

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

Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to Slovenia (average of £180). Flying from London Heathrow Airport to Slovenia in August is currently the most expensive (average of £315). 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 LHR to SI?

When flying from London Heathrow Airport to Slovenia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How far ahead should I book a flight from London Heathrow Airport to Slovenia?

The price you pay for your flight from London Heathrow Airport to Slovenia may vary depending on when you book. For the best chance of a lower fare, look to book 50 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Slovenia

Check out reviews from past customers who have flown with SWISS,easyJet, andLufthansa from London Heathrow Airport to Slovenia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

SWISS

7.5

Good

2,086 reviews

Check prices

Reviews

1 / 20

6.0

Good

Scott,Jul 2026

VIE - ZRH

Good crew, very tight seating, on arrival had to wait in plane for our gate, so mussed our bus and had to wsit an extra 1:45 for the next bus.

SWISS

7.5

Good

2,086 reviews

SWISS

7.5

Good

2,086 reviews

Check prices

Reviews

1 / 20

6.0

Good

Scott,Jul 2026

VIE - ZRH

Good crew, very tight seating, on arrival had to wait in plane for our gate, so mussed our bus and had to wsit an extra 1:45 for the next bus.

easyJet

6.9

Okay

1,926 reviews

SWISS

7.5

Good

2,086 reviews

Check prices

Reviews

1 / 20

6.0

Good

Scott,Jul 2026

VIE - ZRH

Good crew, very tight seating, on arrival had to wait in plane for our gate, so mussed our bus and had to wsit an extra 1:45 for the next bus.

Lufthansa

6.8

Okay

8,247 reviews

SWISS

7.5

Good

2,086 reviews

Check prices

Reviews

1 / 20

6.0

Good

Scott,Jul 2026

VIE - ZRH

Good crew, very tight seating, on arrival had to wait in plane for our gate, so mussed our bus and had to wsit an extra 1:45 for the next bus.

British Airways

6.7

Okay

8,239 reviews

SWISS

7.5

Good

2,086 reviews

Check prices

Reviews

1 / 20

6.0

Good

Scott,Jul 2026

VIE - ZRH

Good crew, very tight seating, on arrival had to wait in plane for our gate, so mussed our bus and had to wsit an extra 1:45 for the next bus.

Related info for your journey

How long is the flight from London Heathrow Airport to Slovenia?
A quick flight from London Heathrow Airport to Slovenia can take about 11h 50m. Air Serbia provides one of the quickest options available for as low as £183. The distance from London Heathrow Airport to Slovenia is about 766 mi. This flight may include one or multiple stops.
What are the cheapest flights from London Heathrow Airport to Slovenia?
The cheapest flight price from London Heathrow Airport to Slovenia is £140. On average you can expect to pay £219. The most popular route, (London Heathrow - Ljubljana Joze Pucnik), can usually be booked for £132.
Can I find deals for flights from Heathrow to Slovenia that include hotel bookings?
Yes. In addition to deals on Heathrow to Slovenia flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to Slovenia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Slovenia.
Can I find deals for business class flights from Heathrow to Slovenia?
Yes. Cheapflights offers flight deals from Heathrow to Slovenia 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 London Heathrow Airport to Slovenia?
Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to Slovenia (average of £180). Flying from London Heathrow Airport to Slovenia in August is currently the most expensive (average of £315). 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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Alternative routes for Heathrow to Slovenia

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Top 4 airlines flying from Heathrow to Slovenia

Airline	Cheapest	Average	Flexibility	On-time
easyJet	Cheapest£115	Average£277	FlexibilityNo cancel fee	On-time86%	Search easyJet flights
Lufthansa	Cheapest£159	Average£207	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
SWISS	Cheapest£169	Average£280	FlexibilityNo cancel fee	On-time79%	Search SWISS flights
British Airways	Cheapest£183	Average£283	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

Fly with Cheapflights

How does Cheapflights help users find flights from Heathrow to Slovenia?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Slovenia from Heathrow today with Cheapflights!

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Heathrow to Slovenia for you. Better yet — we are completely free to use.

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

Certainly. Search results for flights to Slovenia from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Not ready to book yet? You can track prices for flights from Heathrow to Slovenia on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from London Heathrow Airport to Slovenia from £85

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Slovenia

Cheapest flights from Heathrow to SloveniaExplore the most affordable flight options available from Heathrow to Slovenia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 September 2026.

Explore the most affordable flight options available from Heathrow to Slovenia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 September 2026.

Best flights from Heathrow to SloveniaDiscover carefully curated flight deals from Heathrow to Slovenia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 28 September 2026.

Discover carefully curated flight deals from Heathrow to Slovenia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 28 September 2026.

Direct flights from Heathrow to SloveniaExplore direct flight options from Heathrow to Slovenia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 28 September 2026.

Explore direct flight options from Heathrow to Slovenia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 28 September 2026.

Last-minute flights from Heathrow to SloveniaDiscover last-minute flight deals from Heathrow to Slovenia. Data last updated 28 September 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Slovenia. Data last updated 28 September 2026 and is based on user searches.

One-way flights from Heathrow to SloveniaSearch for one-way flight options from Heathrow to Slovenia. Find affordable one-way fares based on user searches. Data last updated 28 September 2026.

Search for one-way flight options from Heathrow to Slovenia. Find affordable one-way fares based on user searches. Data last updated 28 September 2026.

Find flight deals from Heathrow to Slovenia

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One-way from

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Cheapest in

Average price

Good round-trip deal

Cheapflights Fare Finder

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

Best time to book a flight from Heathrow to Slovenia

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

Cheapflights Insights

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

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

Find hourly flight availability from Heathrow to Slovenia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 28 September 2026.

When flying from London Heathrow Airport to Slovenia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How far ahead should I book a flight from London Heathrow Airport to Slovenia?

The price you pay for your flight from London Heathrow Airport to Slovenia may vary depending on when you book. For the best chance of a lower fare, look to book 50 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Slovenia

Check out reviews from past customers who have flown with SWISS,easyJet, andLufthansa from London Heathrow Airport to Slovenia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from London Heathrow Airport to Slovenia?

What are the cheapest flights from London Heathrow Airport to Slovenia?

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

How can I find direct flights from Heathrow to Slovenia?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Heathrow to Slovenia

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

Complete your trip

Complete your trip to Slovenia by adding a car hire and/or hotel booking to your travel itinerary.

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Search flights from Heathrow to Slovenia by cabin class

Find flights from Heathrow to Slovenia, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Heathrow and Slovenia flights

Browse other Heathrow and Slovenia flight options. Last updated on 28 September 2026.

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Heathrow to Slovenia flights

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Top 4 airlines flying from Heathrow to Slovenia

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How does Cheapflights help users find flights from Heathrow to Slovenia?

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

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

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

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Cheapest flights from Heathrow to Slovenia
Explore the most affordable flight options available from Heathrow to Slovenia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 September 2026.

Best flights from Heathrow to Slovenia
Discover carefully curated flight deals from Heathrow to Slovenia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 28 September 2026.

Direct flights from Heathrow to Slovenia
Explore direct flight options from Heathrow to Slovenia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 28 September 2026.

Last-minute flights from Heathrow to Slovenia
Discover last-minute flight deals from Heathrow to Slovenia. Data last updated 28 September 2026 and is based on user searches.

One-way flights from Heathrow to Slovenia
Search for one-way flight options from Heathrow to Slovenia. Find affordable one-way fares based on user searches. Data last updated 28 September 2026.