Low cost carrier Wizz Air is likely to discontinue flights between London Luton and Ljubljana at the end of the summer season. Ticket sales have been suspended past October 25. The airline initially planned to boost capacity between the two cities during the 2019/2020 winter by utilising its larger 230-seat Airbus A321 aircraft. Services were scheduled to run three times per week, before increasing to four in December. Flights are expected to resume in the summer of 2020. Wizz Air will add a number of new routes from the British capital over the coming months, however, some will be launched at the expense of others. With the London suspension and the previously announced hiatus of its Charleroi - Ljubljana service, Wizz Air will temporarily withdraw from the Slovenian market this winter for the first time in seven years.
The budget carrier confirmed this week it will resume flights from Charleroi at the start of the 2020 summer season. In a statement to “Seenews”, the airline said, "Wizz Air always monitors the performance of its routes to allow for the most popular destinations to have the lowest possible fares. The Ljubljana - Brussels [Charleroi] route is seasonalised in winter and it will come back in the IATA summer season 2020 in the middle of March and April”. Wizz Air began serving the Slovenian market in October of 2012 and has maintained flights from both Charleroi and London ever since.
Ljubljana is well connected to a number of London’s airports. easyJet serves the Slovenian capital nine times per week from Stansted and four weekly from Gatwick. This summer, British Airways introduced two weekly seasonal operations between Heathrow and the Slovenian capital, which will come to an end on Monday. A total of 239.727 passengers flew between Ljubljana and London last year, with 47% of those opting for easyJet's Stansted service, followed by Wizz Air's Luton flights and easyJet's Gatwick operations. Wizz Air serves several former Yugoslav markets from London with flights to Belgrade, Pristina, Ohrid, Skopje and Split (seasonally). It previously also maintained flights to Tuzla but later discontinued the service.

Comments
In LTN you have to take the bus which takes at least 10 min, if there is no traffic (not the case in the summer), as the train station is at the bottom of the hill.
In STN you just go two floors down from the terminal and you are at the station.
If even Wizz Air cannot maintain 3pw flights to LON, then you can forget about sustainable flights to anywhere else in the UK.
Apparently a lot of commentators really hate LJU. Who knows from which country or city they come from. Apparently from the city without LCCs. :)
Starting a comment with a "haha" just because Wizzair is maybe discontinuing a route from LJU is just pathetic.
I agree that the rest of the UK offers nice holidays as well, but most of the people go to UK primarily to see London. There is very limited business co-operation between UK and Slovenia.
I don't see any non-London UK flights from LJU in the future.
When it comes to regional airport utilisation, the Austrian's are still in the dark ages
LGW AND STN are absolute nightmares as airports and could learn a lot from the newly revamped LTN.
Furthermore, in my humble opinion, WizzAir is streets ahead of Easyjet on it's offering to passengers.
OK, so WizzAir is looking at profitability, but surely removing the service altogether and giving carte-blanche to it's competitors on the route is far worse than keeping a foot in the door with just one service per week.
Since you don't have proof of their super duper financial performance in Vienna then I guess the only indicator of facts are the ones above. They must be feeling the financial pressure from their owners to start making money.
Routes being cut from Luton: Ljubljana, Catania, Verona, Turku, Tallinn and Bari.
Reductions to Bratislava, Kosice, Poprad, Prague, Bergen, Oslo, Stavanger, Lviv and Lublin.
Not good, not good at all.
But besause of government contract provisions they are obliged to arrange rebooking or reroute to the governemnt ticket holders and have to bear any cost that is above the price they charged for the ticket per contract. And this can get expensive for adria as these are then generally last-minute rebookings, so BRU is the last route that would see a cancellation. They will rather cancel something else and shuffle the aircraft to the BRU line.