The planes appear to be suffering from GPS jamming and spoofing, which uses fake signals to trick pilots into believing the aircraft is in a different location than where they actually are.
The European Aviation Safety Agency in January warned that authorities had seen a ‘sharp rise’ in jamming and spoofing ‘attacks’, but did not say who was behind them.
But industry experts are now alleging that Putin’s forces are behind the attacks with one insider telling The Sun that the ‘information from the Russians is spurious’.
The suggestion echoes that of an aide who reportedly blamed Russia for the ‘wildly irresponsible’ attack that jammed an RAF plane as it flew through Poland while Defence Secretary Grant Shapps was on board.
Aircraft logs revealed jamming hotspots in the Baltic region, Black Sea and eastern Mediterranean, the newspaper reported.
The number of suspected Russian satnav attacks was more than 350 per week last month, researchers claim, a significant increase from the fewer than 50 attacks per week that were recorded last year.
Between August and March, 46,000 flights reportedly logged satellite navigation (satnav) issues over the Baltic region.
Among those were 2,309 Ryanair flights, 1,368 Wizz Air flights, 82 British Airways flights and four EasyJet flights.
Seven planes operated by TUI – which reportedly does not fly in the Baltic – logged satnav issues. The airline said its affected planes were ‘probably positioning flights without passengers’.
Virgin Atlantic, which also does not fly through the region, was the only major UK air carrier not affected by the electronic attacks.
In a statement to the Sun, EasyJet said it has procedures in place to ‘mitigate against GPS issues’.
Similarly, Ryanair told the newspaper: ‘If any location systems, such as GPS, are not functioning then the crew switch to alternate systems.’
Experts note that a ‘significant percentage’ of aircraft reported ‘low navigation accuracy’ appeared to ‘correlate well with areas of known and suspected jamming’.
Dr Jack Watling, a war expert at the RUSI think tank, told The Sun that Russia has ‘long used GPS jamming as a harassment tool’ and that the country is ‘projecting it across Nato borders’.
‘Wherever there is a large Russian garrison you are seeing GPS denial and there is one in Kaliningrad,’ he said. ‘They just have that stuff switched on because there are standing orders.’
Defence official have previously accused Moscow of jamming GPS signals over RAF Akrotiri base in Cyprus.
Despite the suspected Russian satnav attacks, the UK Civil Aviation Authority (CAA) still insists that flying is safe, noting that there are several ‘protocols in place to protect navigation systems on commercial aircraft’.
A spokesperson told the newspaper: ‘GPS jamming does not directly impact the navigation of an aircraft and while it’s a known issue, this does not mean an aircraft has been jammed deliberately.
‘While operators have mitigations in place to assure continued safe operations, we work closely with other aviation regulators, airlines and aircraft manufacturers to curb and mitigate any risks posed by jamming and continuously monitor incidents worldwide.’