Cheapest one-way flights from Cardiff to London in January from $172

AirHint found the following cheapest one-way flights from Cardiff (CWL) to London (LGW) in January 2026 (see full year).

One-Way flights

01 Jan Aer Lingus

Also check the deals for return flights from Cardiff to London in January.

Powered by

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

Feel free to contact us with any feedback or request another flight research.