AirHint found the following cheapest return flights from Tucson (TUS) to London (LHR) in December 2025 (see full year).

Return flights

10 Dec - 17 Dec	Air France
04 Dec - 11 Dec	British Airways
06 Dec - 13 Dec	British Airways
31 Dec - 07 Jan	British Airways
25 Dec - 17 Jan	Finnair
16 Dec - 23 Dec	British Airways
12 Dec - 19 Dec	British Airways
18 Dec - 25 Dec	British Airways
14 Dec - 21 Dec	British Airways
25 Dec - 01 Jan	British Airways
23 Dec - 02 Jan	Air Canada
22 Dec - 29 Dec	British Airways
20 Dec - 27 Dec	British Airways

Also check the deals for one-way flights from Tucson to London 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 London

Cheap car rent in London

Cheapest return flights from Tucson to London in December from $597

Return flights