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Cheap flights from Slovenia to London Heathrow Airport from £63

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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
LJU — LHR
4 Apr — 11 Apr1
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 5 March 2026.

Tue 12/509:25
LJU
-
LHR
1 stop28h 05m
Air Serbia
Mon 18/513:30
LHR
-
LJU
1 stop18h 20m
Air Serbia
Deal found 4/3£139
Fri 8/514:55
LJU
-
LHR
1 stop22h 35m
Air Serbia
Sun 10/519:25
LHR
-
LJU
1 stop18h 20m
Air Serbia
Deal found 2/3£141
Sat 18/414:50
LJU
-
LHR
1 stop5h 30m
SWISS
Sat 25/406:00
LHR
-
LJU
1 stop6h 50m
SWISS
Deal found 4/3£149
Mon 20/410:50
LJU
-
LHR
1 stop6h 35m
SWISS
Mon 27/406:00
LHR
-
LJU
1 stop6h 55m
SWISS
Deal found 5/3£157
Wed 13/520:40
LJU
-
LHR
1 stop16h 50m
Air Serbia
Mon 18/513:30
LHR
-
LJU
1 stop18h 20m
Air Serbia
Deal found 4/3£158
Thu 30/409:25
LJU
-
LHR
1 stop28h 05m
Air Serbia
Sun 3/513:30
LHR
-
LJU
1 stop18h 20m
Air Serbia
Deal found 4/3£159
Wed 15/414:50
LJU
-
LHR
1 stop5h 30m
SWISS
Wed 22/417:15
LHR
-
LJU
1 stop4h 50m
SWISS
Deal found 1/3£160
Thu 2/418:30
LJU
-
LHR
1 stop4h 05m
Multiple Airlines
Sat 18/406:00
LHR
-
LJU
1 stop6h 50m
Multiple Airlines
Deal found 2/3£162
Tue 31/314:50
LJU
-
LHR
1 stop5h 30m
SWISS
Tue 7/406:00
LHR
-
LJU
1 stop7h 00m
SWISS
Deal found 1/3£163
Wed 15/414:50
LJU
-
LHR
1 stop4h 00m
SWISS
Sun 19/406:00
LHR
-
LJU
1 stop7h 00m
SWISS
Deal found 1/3£163

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 5 March 2026.

Round-trip from

£139

One-way from

£63

Popular in

July

Cheapest in

March

Average price

£125
Air Serbia
  • Air Serbia
  • 12/5-18/5
  • 2 total stops
  • 46h 25m total
  • Slovenia to London
Search Deals
Air Serbia
  • Air Serbia
  • 8/5
  • 1 total stop
  • 22h 35m total
  • Slovenia to London
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (£38 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
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 5 March 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

Mon 4/5

15:15-12:30

1 stop22h 15m

London Heathrow

Sat 9/5

19:55-09:00

1 stop12h 05m

£141

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Mon 20/4

10:50-17:50

1 stop8h 00m

London Heathrow

Mon 27/4

06:00-13:55

1 stop6h 55m

£160
Fastest return journey

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Thu 2/4

18:30-21:35

1 stop4h 05m

London Heathrow

Thu 9/4

11:05-17:45

1 stop5h 40m

£161

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Thu 30/4

09:35-12:30

1 stop27h 55m

London Heathrow

Sun 3/5

13:30-09:00

1 stop18h 30m

£175

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Sat 25/4

15:15-12:30

1 stop22h 15m

London Heathrow

Sun 26/4

19:25-09:00

1 stop12h 35m

£175

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Wed 13/5

09:25-12:30

1 stop28h 05m

London Heathrow

Sun 17/5

19:25-08:50

1 stop12h 25m

£191

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Fri 22/5

20:40-12:30

1 stop16h 50m

London Heathrow

Mon 25/5

13:30-08:50

1 stop18h 20m

£193
Cheapest one-way

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Sat 6/6

09:25-12:30

1 stop28h 05m

£82

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Thu 6/8

09:25-12:30

1 stop28h 05m

£82

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Mon 30/3

15:15-12:30

1 stop22h 15m

£82

Flights are sorted by cheapest return flights first.

Deals found on 5/3

Showing 1-10 of 15 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 £98). Flying from Slovenia to London Heathrow Airport in July is currently the most expensive (average of £225). 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.

How often are flights from Slovenia to London delayed?

About 22% of weekly flights between Slovenia and London have experienced delays in the past year, with the average delay time being 112 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 Monday 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 22% 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 SWISS fly from Slovenia to London Heathrow Airport in about 5h 30m. The time it takes to get you to your destination can typically vary by up to 22h 35m. Airlines will cover a distance of 766 mi. Both multi-stop and direct flights can be found to your destination and back.

  • 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 £98). Flying from Slovenia to London Heathrow Airport in July is currently the most expensive (average of £225). 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
Wembley
Northampton
Luton
Gatwick
Slough
Hounslow
Ilford
Hayes
Brentford
Colchester
Guildford
Watford
Kingston upon Thames
Eastbourne
Chelmsford
Ipswich
Swindon
Bedford

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 Slovenia to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Charles de Gaulle to Luton flights
Charles de Gaulle to Heathrow flights
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Duesseldorf Intl to Stansted flights
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Duesseldorf Intl to Luton flights
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Duesseldorf Intl to Heathrow flights
Madrid to Stansted flights
Madrid to Gatwick flights
Frankfurt to Luton flights
Charles de Gaulle to Southend flights
Orly to Heathrow flights
Beauvais-Tille to Stansted flights
Duesseldorf Intl to Gatwick flights
Madrid to London City flights
Vienna to Gatwick flights
Vienna to London City flights
Frankfurt to Heathrow flights
Madrid to Luton flights
Bruxelles-National to Stansted flights
Amsterdam to Luton flights
Bruxelles-National to Gatwick flights
Duesseldorf Intl to London City flights
Vienna to Stansted flights
Amsterdam to Gatwick flights
Bruxelles-National to Luton flights
Amsterdam to Stansted flights
Lyon to Heathrow flights
Frederic Chopin to Heathrow flights
Amsterdam to London City flights
Lyon to Gatwick flights
Madrid to Southend flights
Frankfurt to Southend flights
Linate to London City flights
Dublin to Luton flights
Dublin to Gatwick flights
Dublin to Stansted flights
Frankfurt to London City flights
Amsterdam to Southend flights
Beauvais-Tille to Luton flights
Lyon to Stansted flights
Nantes to Gatwick flights
Malpensa to London City flights
Lyon to Luton flights
Malpensa to Gatwick flights
Malpensa to Heathrow flights
Marseille to Gatwick flights

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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