Cheapest & Most Expensive Months To Book Flights To London
Planning a trip to London and wondering when flights are cheapest — and most expensive — to book? You’ve come to the right place!

Most Expensive Times to Fly to London
Flight cost to London is heavily influenced by tourism, school breaks, and global events. Travelers should expect higher fares during these busy times:
- June – August: Peak summer travel; July is typically the most expensive.
- December – early January: Christmas and New Year’s push airfare to its highest.
- April (Easter): Holiday travel raises demand across the UK.
- Late May (Spring Bank Holiday): Popular with domestic and European travelers.
- August (Notting Hill Carnival): Adds extra demand at the end of summer.
Cheapest Months For Flights to London
The best deals appear in the off-season and shoulder months when demand eases and airlines compete for travelers.
- January – February: Cold winter months with lowest fares.
- March (pre-Easter): Affordable window before spring demand.
- September – November: Shoulder season after summer crowds leave.
- Early December (first half): Short dip before the holidays.
Price Summary Table for London Flights
Time Period | Price Level | Why It Matters |
---|---|---|
June – Aug | 💲💲💲 Highest | Summer tourism peak |
Mid-Dec – Early Jan | 💲💲💲 Highest | Christmas & New Year holidays |
April (Easter) | 💲💲 High | Holiday travel |
Late May (Bank Holiday) | 💲💲 High | Domestic/European holiday |
Aug (Notting Hill Carnival) | 💲💲 High | Cultural festival |
Jan – Feb | 💲 Lowest | Winter lull |
March (pre-Easter) | 💲 Low | Shoulder fares |
Sept – Nov | 💲 Low | Post-summer shoulder |
Early Dec (1st 2 weeks) | 💲 Low | Pre-Christmas dip |