London: cheap flights and the best time to go
Free museums, palaces and West End shows. England, United Kingdom · Cities, Family
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Cheapest round trip
Safety level
Level 2 Level 2: Exercise increased caution
The State Department's advisory for United Kingdom (updated 2026-09-08)
Levels: 1 Exercise normal precautions · 2 Exercise increased caution · 3 Reconsider travel · 4 Do not travel. Read the advisory before you book; it can change. Checked 2026-10-07.
Best time to go
For the weather: May, June, July (highs of 62–82°F, not too much rain). With fares from your airport, the best months weigh weather 60% and price 40%.
| Month | High | Low | Rain | Cheapest round trip from JFK |
|---|---|---|---|---|
| January | 46°F | 36°F | 2.9 in | … |
| February | 47°F | 36°F | 2.0 in | … |
| March | 52°F | 38°F | 1.8 in | … |
| April | 57°F | 42°F | 2.1 in | … |
| May (a best month) | 63°F | 47°F | 2.1 in | … |
| June (a best month) | 69°F | 52°F | 2.3 in | … |
| July (a best month) | 73°F | 56°F | 2.0 in | … |
| August | 72°F | 56°F | 2.7 in | … |
| September | 66°F | 52°F | 2.5 in | … |
| October | 59°F | 47°F | 3.1 in | … |
| November | 51°F | 41°F | 3.0 in | … |
| December | 46°F | 36°F | 2.7 in | … |
Typical daily high and low and total rain, 1991–2020: NOAA NCEI GHCN-Daily, station HAMPSTEAD (22 km away). ★ = the best three months. Fares are the cheapest found for trips leaving that month in the next year.
Prices are per seat for a round trip in economy; with more than one traveler they're the total for your party (babies under 2 on a lap need no seat). The booking site shows the final price for everyone.