Tui found itself in hot water with the Advertising Standards Authority (ASA) thanks to a Las Vegas holiday listing that went up in price by more than £700 when the user clicked through to checkout.
EasyJet, meanwhile, was censured after stating in an ad passengers could take large cabin bags onboard "from £5.99". The ASA ruled there wasn't sufficient evidence the price was available across a wide enough range of flights and dates for the claim to stand up.
Both firms have been told the relevant ads, listings or communications must not appear again in the form complained of.
