"Leisure travel has been the most missed activity during lockdown across age and income demographics, even more so than things like restaurants," said Jason Guggenheim of Boston Consulting Group, which has surveyed consumers in the United States and Europe.
"But it's going to take business travel longer to come back," he said, noting work-from-home models will remain in place for some time.
Even with the schedule increases, analysts expect overall airline capacity will remain drastically lower this year; and without business travel, yields will likely remain negative, they said. Yield is the revenue an airline makes per mile flown.
Australia's Qantas Airways Ltd and Air New Zealand Ltd outlined plans on Thursday for significant boosts to domestic capacity, while Emirates and Etihad Airways are restarting transit flights through hub airports in Abu Dhabi and Dubai.