Cheap flights from Slovenia to London from £36

The cheapest month to fly to London from Slovenia is in March. Flight prices, which tend to average around £125, are often lower during this time because this is during the off-season. The month of February is another great option to travel to London, with average flight prices from Slovenia averaging around £137.

Our data shows that Sunday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £95. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Slovenia to London for around £154.

The cheapest time of day to fly to London is at midday when flights can be purchased for as low as £95. Flights in the afternoon are often more expensive, with an average ticket price of £132.

Fly from Ljubljana Joze Pucnik to London Gatwick for the best Slovenia - London flight prices

There are 2 cabin classes available to choose from on Slovenia to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 21% on your flight if you consider stops on a Slovenia to London flight.

Historically, on average around 20% of flights between Slovenia and London have experienced a delay on any given week. The average delay length over the past 12 months has been 112 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, easyJet have had the fewest delays on this route over the last 12 months, with about 18% of their flights experiencing any sort of delay.

As of April 2026, there are 3 flights per week flying from Slovenia to London. The most common day of the week flights depart is Fri, with 67% of flights taking off on this day.

Flight times from Slovenia to London vary, but if you’re flying out of Ljubljana and flying into London Heathrow Airport (one of the most popular routes), then the duration is 2h 20m on average. Another popular route from Slovenia to London is flying from Maribor to London Heathrow Airport, which will take roughly 25h 45m. Keep in mind that layovers or delays could extend your travel time.