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Cheap flights from Slovenia to London Heathrow Airport from £64

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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
LJU — LHR
14 Aug — 21 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Slovenia to Heathrow

Enter your travel dates to find the best prices.

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 15 July 2026.

Thu 15/1009:25
LJU
-
LHR
1 stop28h 05m
Air Serbia
Sun 18/1013:30
LHR
-
LJU
1 stop18h 20m
Air Serbia
Deal found 13/7£144
Thu 15/1009:25
LJU
-
LHR
1 stop28h 05m
Air Serbia
Mon 19/1013:30
LHR
-
LJU
1 stop18h 20m
Air Serbia
Deal found 13/7£163
Tue 4/806:00
LJU
-
LHR
1 stop5h 45m
KLM
Tue 25/820:55
LHR
-
LJU
1 stop25h 00m
KLM
Deal found 14/7£164
Fri 9/1021:15
LJU
-
LHR
Nonstop2h 20m
British Airways
Mon 12/1011:00
LHR
-
LJU
Nonstop2h 15m
British Airways
Deal found 12/7£168
Thu 12/1112:55
LJU
-
LHR
1 stop5h 05m
Multiple Airlines
Sat 14/1119:20
LHR
-
LJU
1 stop15h 20m
Multiple Airlines
Deal found 12/7£169
Thu 8/1005:30
LJU
-
LHR
1 stop12h 40m
Multiple Airlines
Sun 11/1009:55
LHR
-
LJU
1 stop10h 45m
Multiple Airlines
Deal found 11/7£171
Wed 14/1018:00
LJU
-
LHR
Nonstop2h 20m
Multiple Airlines
Sun 18/1013:30
LHR
-
LJU
1 stop18h 20m
Multiple Airlines
Deal found 14/7£172
Tue 4/806:00
LJU
-
LHR
1 stop5h 45m
KLM
Wed 26/817:10
LHR
-
LJU
1 stop4h 45m
KLM
Deal found 10/7£173
Fri 16/1021:15
LJU
-
LHR
Nonstop2h 20m
British Airways
Sun 18/1017:15
LHR
-
LJU
Nonstop2h 20m
British Airways
Deal found 13/7£173
Tue 10/1109:45
LJU
-
LHR
1 stop27h 40m
Air Serbia
Sun 15/1113:20
LHR
-
LJU
1 stop5h 30m
Air Serbia
Deal found 12/7£176
Wed 11/1112:55
LJU
-
LHR
1 stop4h 10m
Multiple Airlines
Mon 16/1113:20
LHR
-
LJU
1 stop5h 30m
Multiple Airlines
Deal found 12/7£176

Find flight deals from Slovenia to Heathrow

Keep the following information in mind while searching for Slovenia to Heathrow flight deals. Data was last updated 15 July 2026.

Round-trip from

£144

One-way from

£64

Popular in

July

Cheapest in

March

Average price

£312

Good one-way deal

£129 or less
Air Serbia
  • Air Serbia
  • 15/10-18/10
  • 2 total stops
  • 46h 25m total
  • Slovenia to London
Search Deals
Air Serbia
  • Air Serbia
  • 10/10
  • 1 total stop
  • 10h 40m total
  • Slovenia to London
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (£51 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
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Price to beat on a one-way flight from Slovenia to London Heathrow.
Search Deals

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 15 July 2026.
Use the filters below to find and compare flights from Slovenia to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Fri 16/10

20:40-12:30

1 stop16h 50m

London Heathrow

Mon 19/10

13:30-08:50

1 stop18h 20m

£163

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Thu 12/11

09:45-12:25

1 stop27h 40m

London Heathrow

Mon 16/11

13:20-08:50

1 stop18h 30m

£176

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Tue 10/11

12:55-20:50

1 stop8h 55m

London Heathrow

Sat 14/11

06:30-12:10

1 stop4h 40m

£176

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Mon 16/11

20:45-12:25

1 stop16h 40m

London Heathrow

Mon 23/11

13:20-19:50

1 stop5h 30m

£176

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Mon 16/11

12:55-19:15

1 stop7h 20m

London Heathrow

Mon 23/11

20:25-12:20

1 stop14h 55m

£185

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Fri 6/11

12:55-19:15

1 stop7h 20m

London Heathrow

Fri 13/11

20:25-11:40

2 stops14h 15m

£187

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Sat 24/10

18:30-21:35

1 stop4h 05m

London Heathrow

Mon 2/11

06:50-12:55

1 stop5h 05m

£194

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Sat 1/8

14:50-17:50

1 stop4h 00m

London Heathrow

Mon 17/8

06:00-13:55

1 stop6h 55m

£194
Fastest return journey

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Wed 26/8

14:50-17:50

1 stop4h 00m

London Heathrow

Sun 30/8

11:05-15:55

1 stop3h 50m

£194

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Sat 22/8

06:25-17:50

1 stop12h 25m

London Heathrow

Sun 23/8

08:45-10:05

1 stop24h 20m

£194

Flights are sorted by cheapest return flights first.

Deals found on 10/7

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 month to book a flight from Slovenia to London Heathrow Airport?

Currently, March is the cheapest month in which you can book a flight from Slovenia to London Heathrow Airport (average of £125). Flying from Slovenia to London Heathrow Airport in July is currently the most expensive (average of £241). 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 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 15 July 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Slovenia to London Heathrow Airport as you normally would.

How often are flights from Slovenia to London delayed?

About 26% of weekly flights between Slovenia and London have experienced delays in the past year, with the average delay time being 114 minutes.

What is the most punctual flight time for Slovenia to London flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Slovenia to London flights?

Over the past year, British Airways have had the lowest number of delays on this route, with just 26% of flights being delayed.

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 KLM fly from Slovenia to London Heathrow Airport in about 8h 55m. The time it takes to get you to your destination can typically vary by up to 7h 55m. 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 £171, our data shows the cheapest flight currently is £81. When looking at the most popular route, (Ljubljana Joze Pucnik - London Heathrow), you can expect to pay £168 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, March is the cheapest month in which you can book a flight from Slovenia to London Heathrow Airport (average of £125). Flying from Slovenia to London Heathrow Airport in July is currently the most expensive (average of £241). 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
Hounslow
Milton Keynes
Luton
Gatwick
Wembley
Slough
Ilford
Croydon
Hayes
Brentford
Colchester
Northampton
Watford
Eastbourne
Swindon
Southend-on-Sea
Poole
Kingston upon Thames
Southall
Aylesbury

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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