BA, easyJet, Jet2, Ryanair and TUI staff were quizzed in a mystery shop, with some giving advice that would see passengers denied boarding.
Before you book your next flight, find out which airline offer the best flexible policies.
What if NHS test and trace tells me to self-isolate before my flight? Refunds and insurance explained
Rules on rebooking and cancellations for British Airways, Jet2, Ryanair and Tui, and other airlines and holiday companies
The competition regulator has launched an investigation into the refusal of airlines to offer refunds for flights they could not take.
If you're still holding onto an airline voucher, we've rounded up whether its validity has been extended and whether you can swap for a refund.
When will the Boeing 737 Max fly in the UK – what Tui and Ryanair say if you don’t want to fly on it
Not all passengers will be warned in advance if 737 Max operates on their route
Thomas Cook has just relaunched as an online travel agent, so why isn't it using Ryanair flights?
Our investigation exposes hundreds of data security vulnerabilities on the websites of travel firms including Marriott, British Airways and easyJet.
Those who reported their airline to Which? were out of pocket by an average of £446, and had collectively spent a total of 52,000 hours (nearly six years) chasing the airline for a refund. Four in ten complaints were from Ryanair customers
Holidaymakers booked on flights to Cyprus are losing hundreds of pounds because Ryanair is refusing to refund them, even though coronavirus restrictions mean they are banned from flying to and entering the country.