Cheap flights from Slovenia to London Heathrow Airport from £59

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 19/10. Fares are subject to change and may not be available on all flights or dates of travel.
LJU — LHR
6 Sep — 13 Sep1
1 adult

Cheap flight deals from Slovenia to Heathrow

Keep the following information in mind while searching for Slovenia to Heathrow flight deals. Data was last updated 1 September 2025.

Round-trip from

£141

One-way from

£59

Popular in

August

Cheapest in

March

Average price

£199

Good one-way deal

£147 or less
Air Serbia
  • Air Serbia
  • 24/10-2/11
  • 2 total stops
  • 22h 20m total
  • Slovenia to London
Air Serbia
  • Air Serbia
  • 19/10
  • 1 total stop
  • 27h 50m total
  • Slovenia to London
Highest demand for flights based on searches. 24% potential increase in price (£39 potential increase over avg. return price).
Cheapest flight prices on average. 5% potential price decrease (£6 potential savings vs. average return price).
Average for round-trip flights in September 2025
Price to beat on a one-way flight from Slovenia to London Heathrow.

Find flight deals from Slovenia to Heathrow

Cheapest flights from Slovenia to Heathrow
Explore the most affordable flight options available from Slovenia to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 September 2025.

Fri 24/1020:45LJU - LHR
1 stop16h 45mAir Serbia
Sun 2/1113:20LHR - LJU
1 stop5h 35mAir Serbia
Deal found 31/8£141
Fri 10/1018:35LJU - LHR
1 stop4h 00mMultiple Airlines
Fri 17/1006:00LHR - LJU
1 stop25h 15mMultiple Airlines
Deal found 1/9£149
Sat 22/1109:45LJU - LHR
1 stop7h 05mMultiple Airlines
Tue 25/1112:05LHR - LJU
1 stop9h 20mMultiple Airlines
Deal found 31/8£151
Sat 8/1109:45LJU - LHR
1 stop7h 05mMultiple Airlines
Wed 12/1112:05LHR - LJU
1 stop9h 20mMultiple Airlines
Deal found 31/8£152
Sat 29/1106:30LJU - LHR
1 stop13h 45mSWISS
Thu 4/1217:10LHR - LJU
1 stop4h 05mSWISS
Deal found 31/8£152
Wed 15/1019:25LJU - LHR
1 stop13h 30mMultiple Airlines
Wed 22/1009:00LHR - LJU
1 stop9h 25mMultiple Airlines
Deal found 31/8£155
Thu 16/1020:45LJU - LHR
1 stop16h 45mAir Serbia
Mon 20/1013:30LHR - LJU
1 stop18h 30mAir Serbia
Deal found 1/9£155
Wed 8/1010:50LJU - LHR
1 stop6h 35mSWISS
Tue 14/1006:00LHR - LJU
1 stop11h 35mSWISS
Deal found 30/8£157
Sat 27/917:10LJU - LHR
1 stop5h 25mMultiple Airlines
Sat 4/1008:45LHR - LJU
1 stop8h 50mMultiple Airlines
Deal found 30/8£158
Sat 27/917:10LJU - LHR
1 stop4h 45mMultiple Airlines
Tue 30/908:45LHR - LJU
1 stop8h 50mMultiple Airlines
Deal found 31/8£160
Fri 17/1018:35LJU - LHR
1 stop4h 00mBrussels Airlines
Sat 18/1011:05LHR - LJU
1 stop4h 20mBrussels Airlines
Deal found 31/8£161

Cheapflights Fare Finder

 
Customise your flight search to find flights from Slovenia to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 1 September 2025.
Use the filters below to find and compare flights from Slovenia to London Heathrow Airport that are best for you.

Fly from

Slovenia

Fly to

Heathrow

Route

Depart

Return

Price

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Fri 24/10

20:45-12:30

1 stop16h 45m

London Heathrow

Sun 2/11

13:20-19:55

1 stop5h 35m

£141

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Fri 10/10

18:35-21:35

1 stop4h 00m

London Heathrow

Fri 17/10

06:00-08:15

1 stop25h 15m

£149

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Sat 22/11

09:45-15:50

1 stop7h 05m

London Heathrow

Tue 25/11

12:05-22:25

1 stop9h 20m

£151

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Sat 8/11

09:45-15:50

1 stop7h 05m

London Heathrow

Wed 12/11

12:05-22:25

1 stop9h 20m

£152

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Sat 29/11

06:30-19:15

1 stop13h 45m

London Heathrow

Thu 4/12

17:10-22:15

1 stop4h 05m

£152

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Tue 18/11

20:45-12:20

1 stop16h 35m

London Heathrow

Sat 22/11

13:20-08:55

1 stop18h 35m

£155

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Wed 15/10

19:25-07:55

1 stop13h 30m

London Heathrow

Wed 22/10

09:00-19:25

1 stop9h 25m

£155

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Thu 23/10

20:45-12:30

1 stop16h 45m

London Heathrow

Thu 30/10

13:20-08:25

1 stop18h 05m

£155

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Thu 16/10

09:40-12:30

1 stop27h 50m

London Heathrow

Mon 20/10

13:30-09:00

1 stop18h 30m

£155

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Sat 25/10

14:55-13:20

1 stop23h 25m

London Heathrow

Fri 31/10

13:20-08:55

1 stop18h 35m

£155

Flights are sorted by cheapest return flights first.

Deals found on 30/8

Showing 1-10 of 19 results
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Best time to book a flight from Slovenia to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Slovenia 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 Slovenia to London Heathrow Airport

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

Find hourly flight availability from Slovenia 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 1 September 2025.

It’s typically best to fly out from Slovenia to London Heathrow Airport at midday. Doing so could potentially save you 1% on the flight price compared to flying in the morning, which is usually more expensive.

Related info for your journey

Find useful and relevant information for your journey from Slovenia 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 Slovenia to London Heathrow Airport?

    Airlines like Air Serbia and SWISS fly from Slovenia to London Heathrow Airport in about 13h 45m. The time it takes to get you to your destination can typically vary by up to 3h. Airlines will cover a distance of 766 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    While on average a flight from Slovenia to London Heathrow Airport is generally £147, our data shows the cheapest flight currently is £103. When looking at the most popular route, (Ljubljana Joze Pucnik - London Heathrow), you can expect to pay £151 for that flight.

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

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

  • How can I find direct flights from Slovenia to Heathrow?

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

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

    Yes. Cheapflights offers flight deals from Slovenia 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 Slovenia to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Slovenia to London Heathrow Airport (average of £112). Flying from Slovenia to London Heathrow Airport in August is currently the most expensive (average of £164). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Hounslow
Gatwick
Slough
Northampton
Luton
Deal
Wembley
Ilford
Crawley
Hayes
Watford
Folkestone
Ipswich
Chichester
Winchester
Eastbourne
Swindon
Dartford

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Alternative routes for Slovenia to Heathrow

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

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

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

Millions of users choose and trust Cheapflights to book the best flight deals from Slovenia to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes! Cheapflights helps users easily find flights from Slovenia to Heathrow with no change fees.

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

Yes, Cheapflights offers price alerts on Slovenia to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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