2025 Updated Guide
Cheapest Day to Book UK Flights: Fact vs Myth
You've heard the advice: 'Book on a Tuesday at midnight'. Is it true? Not exactly. But flying on the right day can save you hundreds.
Quick Cost & Flight Summary
| Cheapest Fly Day | Tuesday & Wednesday |
| Most Expensive Fly Day | Friday & Sunday |
| Best Booking Day | Mid-week (Tue/Wed) |
| Weekend Premium | +25% Avg |
| Business Routes | Mon AM is pricey |
# The Mid-Week Sweet Spot
For travel from the UK, Tuesdays and Wednesdays are the golden days. Why? Business travelers fly Monday/Friday. Leisure travelers fly Friday/Sunday. Mid-week planes are emptier, so algorithms drop prices.
# When to HIT 'Buy'
Airlines often load new seat inventory on Monday/Tuesday mornings. By Wednesday afternoon, 'sale' fares are matched by competitors. This makes mid-week the best time to browse and book.
| Day of Week | Avg Savings | Notes |
|---|---|---|
| Monday | Low | Business travel peak |
| Tuesday | High | Cheapest day to FLY |
| Wednesday | High | Cheapest day to FLY |
| Friday | None | Most expensive (Weekend getaway rush) |
| Sunday | None | Most expensive (Everyone returning home) |