A new report from Upgraded Points shows that the day you book your flight can impact the price.  After analyzing over 44,000 flights, the study found that Mondays and Tuesdays typically offer the lowest fares, with an average 5.2% discount.  In contrast, Saturday is the most expensive day to book, with prices averaging 7.3% higher. Airline choice also matters. United flights are cheapest on Sundays, while Delta offers the best deals on Thursdays, saving travelers around $35.  JetBlue and Spirit flights tend to be cheapest when booked on Mondays and Tuesdays.  American Airlines showed the smallest variation in price by day, but Thursdays and Fridays were slightly better for deals. The report didn't include Southwest, which doesn't list fares on Google Flights. However, Southwest now offers weekly “Wanna Go Wednesday” discounts.  Other airlines, like United and JetBlue, have special deal pages and tools like JetBlue's “Best Fare Finder.” Booking 2.5 months before departure is still considered the best time for flight deals. For hotels, booking 15 days in advance is ideal.  Travelers are encouraged to use price match and cancellation policies to maximize savings.