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

Return flights

23 Dec - 06 Jan	Lufthansa
24 Dec - 01 Jan	Lufthansa
22 Dec - 06 Jan	Lufthansa
24 Dec - 02 Jan	United
21 Dec - 06 Jan	Virgin Atlantic
20 Dec - 06 Jan	Virgin Atlantic
19 Dec - 06 Jan	Virgin Atlantic
24 Dec - 03 Jan	American Airlines

Also check the deals for one-way flights from Dayton 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.

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Cheapest return flights from Dayton to London in December from $938

Return flights