Cheap flights from Slovenia to London from £64

In general, January is the cheapest month to fly from Slovenia to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £164. The month of March is another great option to travel to London Heathrow Airport, with average flight prices from Slovenia averaging around £166.

On average, the least expensive day to fly to London Heathrow Airport from Slovenia is on a Thursday. momondo users have found tickets for Thursday departures for as low as £93. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Saturday is £390.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from Slovenia to London Heathrow Airport in the afternoon for as low as £167. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £393 on average. Flights to London Heathrow Airport from Slovenia in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

There is only 1 cabin class available to choose from on Slovenia to London Heathrow Airport 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 27% on your flight if you consider stops on a Slovenia to London Heathrow Airport flight.

Historically, on average around 27% 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 119 minutes.

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

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

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 27% of their flights experiencing any sort of delay.

As of August 2026, there are 2 flights per week flying from Slovenia to London Heathrow Airport. The most common day of the week flights depart is Wed, with 50% of flights taking off on this day.

If you’re flying from a popular airport in Slovenia, such as Ljubljana or Maribor, and flying into London Heathrow Airport, then you can expect flight times to average 2h 20m and 25h 45m, respectively.