Which are the cheapest days to fly? Friday is typically the cheapest day to fly internationally, with fares averaging about 8% lower than on Sundays, which are usually the most expensive. For U.S. domestic trips, Tuesday often offers the best value, with prices up to 14% lower than Sunday*. Book great deals on 500+ airlines. Discover hotel stays you can afford. Find the right car for every road and budget. Download our app and enjoy instant savings. Phone only deals! Save by calling our travel experts. What our customers say about our service? We have you covered when it comes to value travel and the cheapest flights. Browse our options to get the best deals on airline tickets, no matter where you're headed. Find the lowest prices on one-way and roundtrip tickets right here. You will see the cheapest airline tickets to popular destinations. You can filter the results to see only nonstop flights or flights under a certain price to more easily plan your perfect budget. On the KAYAK app for iOS and Android you’ll find all the great travel offers found on the website and much more. There are special mobile rates and app only deals that allow you to save even more money. Plus, you can get notifications straight to your phone letting you know when prices for your next trip have dropped. Use KAYAK’s flight search Price Calendar to see which days of the month are cheapest to fly. Simply enter your dates and a color-coded calendar view will appear. Priceline.com - The Best Deals on Hotels, Flights and Rental Cars. Where to? Explore newly added savings across destinations, hotels, packages, and more. Extra savings on every mile. Book over 300,000 travel activities in more than 200 countries worldwide! Book and compare the cheapest flights from all major airlines and online travel agents, and find the best plane tickets to all your favorite destinations. Discover hotel, flight and rental car deals exclusively in the app. Download today to stay connected with important trip details — anytime, anywhere. Everyone loves a cheap flight—but finding one? That’s where Priceline comes in.