Historical advice to book at midnight is largely outdated as pricing is now continuous across all time zones. A 2015 study found a 6% saving at Tuesday midnight, but this only applied to roughly 1.6% of markets. More Effective Savings Strategies
While no specific hour guarantees a deal, some data suggests subtle patterns: cheapest time of day to buy flights
The day you and how early you book have a significantly higher impact on price than the time of day you hit "purchase". Historical advice to book at midnight is largely