AirHint found the following cheapest return flights from London (LTN) to Grenoble (GNB) in December 2025 (see full year).

Return flights

13 Dec - 14 Dec	easyJet	direct
13 Dec - 20 Dec	easyJet	direct
20 Dec - 10 Jan	Ryanair	direct
20 Dec - 27 Dec	Wizz Air UK	direct
06 Dec - 13 Dec	Wizz Air UK	direct
06 Dec - 20 Dec	Wizz Air UK	direct
20 Dec - 28 Dec	Wizz Air UK	direct
27 Dec - 10 Jan	Wizz Air UK	direct
20 Dec - 03 Jan	Wizz Air UK	direct
27 Dec - 03 Jan	easyJet	direct
06 Dec - 12 Dec	Wizz Air UK
13 Dec - 03 Jan	Ryanair	direct
28 Dec - 03 Jan	easyJet	direct
27 Dec - 04 Jan	easyJet	direct
26 Dec - 03 Jan	easyJet

Also check the deals for one-way flights from London to Grenoble in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Grenoble

Cheap car rent in Grenoble

Cheapest return flights from London to Grenoble in December from 95€

Return flights