A travel expert has claimed that the time you book a flight can be just as important as the day you choose to travel , and that setting your alarm at a very specific time could help you land the best deals. Jamie Fraser, owner of Wild Packs , claims that the cheapest time to book flights is exactly 2:48am in what could be good news for night owls and insomniacs. He also claims that evening searches between 8pm and 2pm can also be around 5% cheaper than searching during peak morning hours.