The cheapest round-trip from Cologne to London is about 34 EUR, usually in July 2026; January 2027 is priciest, so booking the low month saves around 169 EUR (~83%). Typical fare ~81 EUR, from 229 priced fares. Flightmussy live data, updated 2026-06-13.
Cheap flights from Cologne (CGN) to London (LHR/LGW/STN/LTN/LCY). Free, no signup, no ads, no tracking. Compare every airline across 12 months of fares on one heatmap — including low-cost carriers Google Flights often deprioritises.
Cheapest round-trip seen: 34 EUR, usually around July 2026. Typical fare ~81 EUR. Across the year prices range roughly 34–203 EUR — about 83% cheaper in the low season than the peak (January 2027). Carriers on this route include Lufthansa, Austrian, Eurowings.
Based on Flightmussy's live 12-month fare data; prices last updated 2026-06-13. Prices change constantly — search live for current fares.
The lowest round-trip fare we found for each month over the coming year — low season versus peak at a glance. July 2026 is cheapest; January 2027 is priciest.
| Jun 2026 | 36 EUR | |
|---|---|---|
| Jul 2026 | 34 EUR | |
| Aug 2026 | 42 EUR | |
| Nov 2026 | 203 EUR | |
| Dec 2026 | 203 EUR | |
| Jan 2027 | 203 EUR | |
| Feb 2027 | 74 EUR | |
| Mar 2027 | 74 EUR | |
| Apr 2027 | 88 EUR | |
| May 2027 | 88 EUR |
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