What is the cheapest day of the week to fly?

Tuesday is the cheapest day to fly for US domestic routes — averaging 18% below the median fare. Wednesday is the cheapest for international flights. Friday and Sunday are the most expensive departure days, carrying a 19–22% premium over the weekly median.

What is the cheapest day to book flights?

Tuesday afternoon and Wednesday morning are the cheapest times to book flights. Airlines typically release sales on Monday night, and by Tuesday afternoon, competing carriers have matched the lower prices. However, the booking-day impact (5–8% difference) is smaller than the departure-day impact (15–22% difference).

Is it cheaper to fly on weekdays or weekends?

Weekdays (especially Tuesday and Wednesday) are consistently cheaper than weekends for domestic US flights. The exception is Saturday, which can be affordable for leisure routes since business travelers avoid it. Sunday and Friday are the most expensive days to fly.

Cheapest Days to Fly in 2026: Data from 2 Million Fares

April 9, 2026Updated6 min

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