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

One-Way flights

13 Dec	easyJet	direct
20 Dec	Wizz Air UK	direct
21 Dec	easyJet	direct
12 Dec	easyJet
19 Dec	easyJet
14 Dec	easyJet	direct
27 Dec	Ryanair	direct
28 Dec	easyJet	direct
26 Dec	easyJet

Also check the deals for return 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.

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Cheapest one-way flights from London to Grenoble in December from $45

One-Way flights