Report identifies smarter travel days as airlines move away from fixed pricing patterns

The long-held belief that Tuesday is the cheapest day to book flights is losing relevance as airlines increasingly rely on dynamic pricing, according to new data highlighted by Travel + Leisure from online travel platform Expedia. Expedia suggests that Friday may now be the most cost-effective day to book domestic flights, reflecting shifting patterns in corporate and leisure travel demand. For years, travellers were advised to book tickets on Tuesdays to secure the lowest fares. However, Julian Kheel, founder and chief executive of Points Path, told Southern Living last year that the idea stems from outdated airline pricing systems.

“The idea that Tuesdays are the best day to book flights is a leftover myth from the early days of airline pricing,” Kheel said. In the past, airlines uploaded fares at fixed intervals, enabling early bookers to secure lower prices. “That’s not how ticketing systems work anymore,” he added, noting that prices are now more dynamic and responsive to demand. Expedia’s data, shared with Travel + Leisure, indicates that booking domestic flights on Fridays may offer savings because the end of the week typically sees reduced business and corporate travel activity. However, peak travel periods such as major holidays can override these trends, limiting the impact of day-based booking strategies. While Tuesday may no longer be the optimal booking day, it remains one of the cheapest days to fly. According to Expedia, travellers flying on Tuesdays spent an average of 14% less compared with those flying on Sundays. Friday departures were also up to 8% cheaper than Sunday flights. “Business travellers head home earlier in the week these days,” Melanie Fish, head of Expedia Group Brands public relations, told Travel + Leisure. She said the shift creates opportunities for leisure travellers to save by choosing strategic travel days, including Friday bookings and Tuesday departures.

Which dates typically have the lowest travel rush?

Expedia identified February 25, March 4 and November 18 as among the least busy travel dates, offering potential savings. In contrast, May 22, July 3 and August 29 were flagged as some of the busiest days to fly. Other factors also influence ticket prices. CNBC reported that early morning departures often cost less, as many travellers prefer later flights. Morning flights also tend to have higher on-time performance, as aircraft are typically stationed at the airport overnight. Timing the purchase remains critical. Scott Keyes, founder of flight deal subscription service Going, told CNBC that travellers should book several months in advance. For off-peak domestic travel, he recommended booking one to three months ahead. For international trips, two to eight months is often optimal. During peak seasons, domestic travellers may need to book three to seven months in advance, and international flyers four to ten months ahead.

For last-minute bookings, Keyes advised purchasing tickets at least 21 days before departure, noting that fares tend to rise sharply after that point. As airlines continue to refine demand-based pricing models, fixed rules of thumb appear increasingly unreliable. Instead, travel platforms suggest that flexibility in booking dates, departure times and advance planning may offer more consistent savings than waiting for a single “magic” day.