Newspaper headlines: BA 'chaos' and Manchester run defiance
British Airways comes in for some harsh criticism over what the Times calls the most serious IT failure in UK aviation history.
The Daily Mail says critics have blamed drastic cost cutting. How long, the paper asks in a leading article, will passengers pay through the nose if they're receiving a service the cheapest budget airline would be ashamed of?
If cuts are to blame, says the Daily Mirror, the airline really has gone into a tailspin.
Pictures of exhausted passengers - some sleeping on the floor at Heathrow - illustrate what the Daily Telegraph calls the worst airport chaos for decades.
The paper says some passengers left the airport without luggage they had checked in only to find that some local hotels had increased their prices to more than a £1,000 a night.
The Daily Express says BA is facing a record compensation bill estimated at £150m.
'We are not afraid'
After the Manchester bomb attack, the Times says Home Secretary Amber Rudd is coming under pressure to clarify the government's use of powers to curb terror suspects.
The paper says it has been told that temporary exclusion orders have been used on only one occasion despite the return to the UK of around 350 fighters from the so-called Islamic State group.
The lead story in the Guardian says MI5 has launched two separate inquiries into how it missed the danger posed by the bomber Salman Abedi.
The Sun calls on social media giants to play their part in the war against terror, saying it cannot be acceptable to hide behind privacy issues as an excuse for holding back information.
"We are not afraid" is the main headline in the Daily Mirror, reporting Sunday's Great Manchester Run.
The paper says tens of thousands took part - putting on a defiant show of solidarity, six days after the bombing.
The Guardian reports from what it calls the world's most toxic town, Kabwe in Zambia, where lead poisoning is said to have affected thousands of people and damaged generations of children.
The paper says a giant, state-owned smelter closed in 1994 but desperately poor people are still scavenging on a vast slag heap, and youngsters ingest the poisonous metal when they play outside.
The Daily Telegraph highlights a suggestion by German Chancellor Angela Merkel that her country can no longer completely rely on its American and British allies, after the election of President Trump and the vote for Brexit.
The paper describes the comments at an election campaign event as "extraordinary".
The Financial Times says Mrs Merkel has signalled that Europe can no longer count on the US as a reliable partner, reflecting a new Transatlantic rift that has emerged after two days of international summits with Mr Trump.
English wine boom
The Times reports that paintings by Vermeer, Rembrandt and other old masters are disintegrating before our eyes because of a chemical process no-one had anticipated.
Fatty acids in oil paint react with some pigments to form soap molecules forming raised dots which look like tiny popcorns on the pictures, it reports.
The Times says the soap film is being analysed by scientists after it turned up on paintings from the National Gallery in London to the Museum of Modern Art in New York.
The paper says 64 businesses put down roots in England and Wales.
Experts pointed to increased demand from abroad because of the weak pound and a growing recognition that English wine is not to be scoffed at.