Serbia’s low-cost aviation market is facing a potential contraction as Ryanair prepares to leave Niš and Wizz Air considers closing its four-aircraft Belgrade base, developments that could affect fares, route availability and competition between carriers. Ryanair has confirmed that it will suspend all flights to and from Niš Constantine the Great Airport from the beginning of the 2026 winter season. The airline attributed the decision to unspecified “fuel regulatory problems” affecting the airport.
Ryanair has operated at Niš since 2016, with year-round services to Vienna and Malta and seasonal routes to Stockholm and Corfu. The company has not provided details on the regulation that made its Niš operation unviable, leaving the precise contribution of fuel rules, airport charges, commercial conditions and passenger demand unclear.
Fuel uncertainty adds pressure to Niš operations
The withdrawal comes amid uncertainty over aviation-fuel supplies linked to sanctions affecting Serbian oil company NIS. The interaction between the fuel situation and the regulatory requirements at Niš has become a factor for an airport whose international network depends heavily on low-cost carriers. Ryanair’s decision removes its services from Niš at a time when Serbia is also confronting a separate regulatory dispute involving Wizz Air at Belgrade’s Nikola Tesla Airport.
The dispute centres on amendments adopted by Serbia’s Civil Aviation Directorate in March, concerning permits for foreign airlines using third- and fourth-freedom traffic rights. Wizz Air says the wording of the amended rules could prevent its aircraft and crews from starting and ending operating cycles in Serbia. The Hungarian carrier has warned that this could lead it to close its Belgrade base from November, although no final decision has been made.
Wizz Air expects to determine its plans by late September. Even if the Belgrade base is closed, the airline has said it could continue operating some flights to the Serbian capital using aircraft based elsewhere, although at reduced frequencies.
Wizz Air accounts for a significant share of Belgrade capacity
The possible withdrawal of Wizz Air aircraft from Belgrade would affect a substantial portion of the airport’s low-cost capacity. The airline currently operates four aircraft from the Serbian capital and represents approximately 21% of seat capacity, compared with about 52% for Air Serbia, according to OAG data cited by Aviation Week. Wizz Air says it has carried more than 14mn passengers to and from Serbia since entering the market in 2010.
The carrier has accused Serbian authorities of attempting to shield state-owned Air Serbia from competition. The Civil Aviation Directorate has rejected that claim, maintaining that the amendments apply equally to all airlines and neither prohibit Serbia-EU flights nor prevent carriers from establishing routes permitted under international agreements. The regulatory dispute is being examined by the European Commission. Wizz Air argues that the amendments are inconsistent with the European Common Aviation Area agreement, which places Serbia within much of the EU’s liberalised aviation market. The Serbian government has also discussed possible changes to the rules.
Reduced competition could affect route-level fares
The impact on passengers would depend on the individual route. Markets where Wizz Air competes directly with Air Serbia or another carrier would face less fare competition if Wizz removed frequencies, particularly where the airline currently supplies a significant share of discounted seats. Routes left with only one operator could face greater exposure to higher fares and fewer flight options. However, the effect would not necessarily be uniform across Serbia’s network.
Other airlines could replace some of Wizz Air’s capacity, while Air Serbia could add flights on routes where demand supports additional services. Wizz Air could also continue selected routes without keeping aircraft overnight in Belgrade.
Such an operating model would be less flexible and could increase the cost of serving marginal destinations, potentially affecting the viability of routes that depend on the economics of a locally based aircraft. For Air Serbia, reduced low-cost competition could improve yields and strengthen its position on European routes. The broader effects would depend on how much capacity disappeared from the market rather than being replaced by other carriers.
Vinci concession adds another layer to the aviation dispute
The regulatory debate also involves the structure of Serbia’s airport market. Vinci has operated Nikola Tesla Airport since 2018 under a concession agreement with the Serbian state. Industry representatives cited by Nova Ekonomija have linked the pressure on low-cost airlines to the concession, arguing that restrictions on the growth of Niš could protect traffic and revenues at Belgrade’s airport. That connection has not been publicly established. The commercial protections contained in the concession agreement remain an important part of the discussion over competition between Serbia’s airports.
Vinci normally benefits from higher passenger volumes regardless of which airline carries them. A reduction in Wizz Air traffic would therefore benefit the concessionaire only if Air Serbia or other airlines replaced most of the lost capacity, or if the concession includes protections against competition from regional airports. The effect on Serbia’s aviation market extends beyond airport revenues. Fewer low-cost services could reduce affordable travel options for Serbian residents, visitors and the country’s large diaspora, while also affecting business and tourism connectivity.
Regulatory framework remains under review
The simultaneous pressure on Niš and Belgrade has put Serbia’s aviation policy under greater scrutiny. Ryanair’s exit is linked by the airline to fuel-related regulatory issues, while Wizz Air’s potential base closure is tied to the interpretation of rules governing foreign carriers. The two cases therefore involve different regulatory issues but have a common potential market effect: less low-cost capacity and fewer competing airlines.
Serbia’s participation in the European Common Aviation Area gives the regulatory dispute a broader significance. The agreement is intended to integrate Serbia into the EU’s liberalised aviation market, while the European Commission is now examining the March amendments. The Serbian government has discussed changes to the framework, but Wizz Air has not yet made a final decision on its Belgrade base. The immediate aviation issues are consequently the continuation of low-cost operations at Niš, the regulatory status of Wizz Air’s Belgrade base and the availability of aviation fuel for regional airports. The outcome will determine how much capacity remains in Serbia’s low-cost market as the 2026 winter season begins.
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