Find the cheapest day to fly your route. Shift by ±3 days and save up to 30% without changing destination.
Prices shown per direction per passenger. Cheapest outbound + return combo highlighted below.
Airline pricing engines treat Friday afternoons and Sunday evenings as peak demand — that’s when business travelers and weekenders all want to fly, so that’s when prices spike. Shift one leg of your trip by even a single day and you can often knock $80–$200 off a transcontinental round trip.
The patterns that hold across almost every domestic US route:
Use this tool to check the full 7-day window around your target. If even one leg can shift by a day or two, the total saving is usually worth the flex.
Yes. All prices shown are the advertised fare including federal taxes (US Transportation Tax, segment fees) and airline surcharges. They don’t include optional extras like seat selection, checked bags or priority boarding.
Not necessarily. The calendar shows the cheapest fare on each day, which may be a different carrier from the other days. Click through to see exactly who’s flying.
Low-cost carriers like Spirit, Frontier and Southwest often price each leg independently, so mixing two carriers (e.g. JetBlue outbound, Southwest return) can beat any single-carrier round trip. Our search defaults to showing the cheapest combination, regardless of airline.
±3 days captures the Tue/Wed savings without pushing too far from your target. ±7 gives maximum savings for genuinely open travelers but will often suggest awkward overnight gaps.
Yes, but savings are proportionally smaller. A flexible-date search on US–Europe typically saves 8–15% rather than 25–30%, because long-haul pricing is less demand-sensitive day-to-day. The exception is high-season routes (US to London or Paris in July) where shifting by a week can save several hundred dollars.