When a woman looked at her husband's phone while he was napping during a flight from Doha, Qatar to Bali, she discovered he was having an affair. After that all hell broke loose, and the fighting couple caused such a commotion that the Qatar Airlines pilot felt it was best to make an emergency landing.
According to news.com, "The situation then got 'out of hand' and the pilot made the decision to divert to Chennai, India. The family of three were offloaded at Chennai airport and the plane continued its journey to Bali."
The Iranian family never made it to their destination, but instead got on a flight to Kuala Lumpur, before boarding another flight that sent them back to Doha. Luckily those flights made it to their destinations without a hitch.