"KLM is currently avoiding Iranian airspace as a precaution—a route we already rarely use. Last night's closure of Iranian airspace therefore had no effect on our operations," a KLM spokesperson was quoted as saying.
Iran closed its airspace for nearly five hours on Wednesday before reopening it, but airlines continued to take alternative routes.
British Airways’ owner IAG said BA flights to Bahrain were canceled through January 16. Wizz Air said avoiding Iran and Iraq could force some westbound flights from Dubai and Abu Dhabi to make refueling and crew-change stops in Cyprus or Greece.
Germany issued new guidance on Wednesday cautioning its airlines against entering Iranian airspace, after Lufthansa adjusted Middle East operations.
Carriers diverted over Afghanistan and Central Asia or used longer routings to reduce operational risk, according to Reuters.
US President Donald Trump signaled on Tuesday that he was leaning toward a military strike on Iran when he said Iranian protesters should keep up the demonstrations and that “help is on its way.”
Trump said on Wednesday he had been informed that the killing in Iran has stopped and Tehran would not execute any of the protesters.
At least 12,000 people have been killed in Iran in the largest killing in the country's contemporary history, much of it carried out on January 8-9 during an ongoing internet shutdown, senior government and security sources told Iran International.