Music and sports fans lost more than £5m to online ticket fraud last year, up from £3.35m in 2014, the Local Government Association (LGA) said.
Customers who bought fake tickets lost an average of £444 per transaction, with social media sites accounting for nearly half of all reported scams.
Trading Standards teams expect criminals will focus on Wembley concerts by Beyonce, Rihanna, Coldplay and Bruce Springsteen, festivals including Glastonbury and sporting events including the Euro 2016 championship and Wimbledon.
The LGA is urging people to buy tickets through official channels and not to risk losing money by using other websites, agencies or social media sites.
More than a quarter of fake tickets sold online in 2015 (26 per cent) were for big sporting events such as the Rugby World Cup and Premier League football matches.
More than a fifth of ticket fraud (21 per cent) was instigated via Facebook, with Gumtree accounting for 22 per cent and Twitter six per cent.
More than 200 concert-goers complained to Action Fraud last year after tickets purchased for shows including Ed Sheeran, Taylor Swift and AC/DC from an online ticket website failed to show up.
Simon Blackburn, chairman of the LGA’s Safer and Stronger Communities Board, said: “With Euro 2016 starting next month, big-name concerts on the horizon and Glastonbury Festival already sold out, this summer is ripe for criminals to exploit desperate fans willing to do anything to get a ticket to see England play or see their favourite band.
“Social media sites now account for nearly half of all ticket scams and they need to do more to help prevent people being conned paying for tickets on their sites.
“People should be very wary of ticket offers for ‘sold out’ events as these situations are exploited by criminals.
“Similarly, if the price seems too good to be true, it’s likely to be a scam.”
Mike Andrews, lead co-ordinator for the National Trading Standards eCrime Team, said: “Criminals selling fake tickets online are becoming more and more prevalent - to avoid disappointment we urge fans to be on guard when purchasing sports and music tickets.
“For fans considering snapping up any last-minute tickets, be sure to read our online ticket checklist. If you are concerned that a sale may be fraudulent we urge you to report it to the Citizens Advice consumer helpline by calling 03454 04 05 06.”
Action Fraud - the UK’s national reporting centre for fraud and cyber crime - said major sporting events accounted for over a quarter of all incidents of ticket scams. This is followed by fraudulent tickets to gigs and festivals.
Those most at risk of buying fake or non-existent tickets are aged between 20-29 (28 per cent) followed by 30-39 and 40-49 year olds (23 per cent for each age group).
Campaigners urge sports and music fans to be vigilant when trying to buy tickets.
Action Fraud says you should buy tickets only from the venue box office, promoter, official agent or reputable ticket exchange sites and that paying by credit card offers greater protection than with other methods. Before entering card details on a website, ensure that the link is secured with a padlock symbol.