AirHint found the following cheapest one-way flights from London (LHR) to Dublin (DUB) in March 2026 (see full year).

One-Way flights

04 Mar	British Airways	direct
18 Mar	British Airways	direct
09 Mar	British Airways	direct
02 Mar	British Airways	direct
03 Mar	British Airways	direct
14 Mar	British Airways	direct
16 Mar	British Airways	direct
24 Mar	British Airways	direct
15 Mar	British Airways	direct
26 Mar	Aer Lingus	direct

Also check the deals for return flights from London to Dublin in March.

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 Dublin in March from $63

One-Way flights