AirHint found the following cheapest return flights from London (LON) to Xi'an (XIY) in December 2025 (see full year).

Return flights

12 Dec - 19 Dec	Wizz Air UK
01 Dec - 16 Dec	Ryanair
28 Dec - 02 Jan	Tianjin Airlines	direct
11 Dec - 18 Dec	Wizz Air UK
26 Dec - 02 Jan	Tianjin Airlines	direct
26 Dec - 31 Dec	Wizz Air UK
08 Dec - 04 Jan	Wizz Air UK
18 Dec - 27 Dec	Ryanair
05 Dec - 03 Jan	Wizz Air
19 Dec - 28 Dec	Wizz Air UK
13 Dec - 04 Jan	Ryanair
06 Dec - 10 Jan	Ryanair
18 Dec - 04 Jan	easyJet
19 Dec - 11 Jan	Wizz Air UK
15 Dec - 03 Jan	Ryanair
19 Dec - 28 Dec	Tianjin Airlines	direct
10 Dec - 01 Jan	China Southern

Also check the deals for one-way flights from London to Xi'an 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 return flights from London to Xi'an in December from $639

Return flights