New Delhi, June 23 -- Major international airlines extended flight cancellations to the Persian Gulf, disrupting air traffic to critical hubs such as Dubai after the US struck nuclear sites in Iran and Tehran vowed to retaliate.

Singapore Airlines said it would suspend service to Dubai until Wednesday night and warned more flights could be cancelled due to the severity of the situation. British Airways added cancellations to Dubai and Doha, while Air France-KLM reportedly will scrap flights to Dubai and Riyadh, reported Bloomberg.

The airlines' decisions hinted at the potential for escalation of the war between Israel and Iran after US President Donald Trump joined the fight by attacking Iran's key nuclear sites. The dramatic escalation...