Cheap flights from Slovenia to London Heathrow Airport from £84

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 13/11. Fares are subject to change and may not be available on all flights or dates of travel.
LJU — LHR
17 Oct — 24 Oct1
1 adult
1 adult, Economy

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 17 September 2025.

Round-trip from

£134

One-way from

£84

Popular in

August

Cheapest in

March

Average price

£184

Good one-way deal

£173 or less
Air Serbia
  • Air Serbia
  • 24/10-7/11
  • 2 total stops
  • 35h 20m total
  • Slovenia to London
Air Serbia
  • Air Serbia
  • 13/11
  • 1 total stop
  • 27h 35m total
  • Slovenia to London
Highest demand for flights based on searches. 20% potential increase in price (£31 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£4 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 17 September 2025.

Sat 25/1014:55LJU - LHR
1 stop23h 25mAir Serbia
Tue 28/1013:20LHR - LJU
1 stop18h 35mAir Serbia
Deal found 16/9£134
Sat 25/1014:55LJU - LHR
1 stop23h 25mAir Serbia
Wed 29/1013:20LHR - LJU
1 stop18h 35mAir Serbia
Deal found 15/9£135
Mon 6/1020:45LJU - LHR
1 stop16h 45mAir Serbia
Sat 11/1019:55LHR - LJU
1 stop12h 05mAir Serbia
Deal found 16/9£139
Sat 11/1014:55LJU - LHR
1 stop5h 10mAir Serbia
Sun 12/1019:25LHR - LJU
1 stop12h 35mAir Serbia
Deal found 16/9£142
Sat 8/1106:30LJU - LHR
1 stop10h 50mMultiple Airlines
Sun 9/1106:50LHR - LJU
1 stop5h 05mMultiple Airlines
Deal found 15/9£151
Fri 14/1106:30LJU - LHR
1 stop13h 45mMultiple Airlines
Mon 17/1106:50LHR - LJU
1 stop5h 05mMultiple Airlines
Deal found 15/9£153
Thu 13/1106:30LJU - LHR
1 stop10h 50mMultiple Airlines
Sun 16/1106:50LHR - LJU
1 stop5h 05mMultiple Airlines
Deal found 15/9£153
Tue 18/1120:45LJU - LHR
1 stop16h 35mAir Serbia
Sat 22/1113:20LHR - LJU
1 stop18h 35mAir Serbia
Deal found 14/9£154
Mon 20/1020:45LJU - LHR
1 stop16h 45mAir Serbia
Wed 22/1013:30LHR - LJU
1 stop18h 30mAir Serbia
Deal found 16/9£155
Thu 16/1019:20LJU - LHR
1 stop13h 35mMultiple Airlines
Mon 20/1011:05LHR - LJU
1 stop5h 40mMultiple Airlines
Deal found 15/9£155
Mon 10/1113:40LJU - LHR
1 stop4h 25mMultiple Airlines
Fri 14/1120:05LHR - LJU
1 stop16h 55mMultiple Airlines
Deal found 16/9£156

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 17 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

Sat 25/10

14:55-13:20

1 stop23h 25m

London Heathrow

Sat 1/11

13:20-08:55

1 stop18h 35m

£134

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

£134

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Sat 25/10

14:55-13:20

1 stop23h 25m

London Heathrow

Wed 29/10

13:20-08:55

1 stop18h 35m

£135

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Mon 8/12

09:45-12:20

1 stop27h 35m

London Heathrow

Thu 11/12

13:20-08:25

1 stop18h 05m

£135

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Sat 8/11

06:30-16:20

1 stop10h 50m

London Heathrow

Sun 9/11

06:50-12:55

1 stop5h 05m

£151

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

£154

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Mon 6/10

14:55-12:30

1 stop22h 35m

London Heathrow

Sun 12/10

19:25-09:00

1 stop12h 35m

£154

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Mon 6/10

20:45-12:30

1 stop16h 45m

London Heathrow

Wed 8/10

13:30-09:00

1 stop18h 30m

£154

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Sat 18/10

14:55-12:30

1 stop22h 35m

London Heathrow

Sun 19/10

19:25-09:00

1 stop12h 35m

£154

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Tue 20/1

20:45-12:20

1 stop16h 35m

London Heathrow

Sat 24/1

13:20-08:55

1 stop18h 35m

£155

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 22 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 17 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 fly from Slovenia to London Heathrow Airport in about 23h 25m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 766 mi.

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

    While on average a flight from Slovenia to London Heathrow Airport is generally £232, our data shows the cheapest flight currently is £158. 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
Slough
Gatwick
Northampton
Luton
Deal
Wembley
Ilford
Crawley
Hayes
Watford
Winchester
Chichester
Ipswich
Swindon
Dartford
Guildford
Brentford

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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?

Cheapflights makes it easy to find Slovenia to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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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