Cheapest return flights from London to Dublin in September from 137€

AirHint found the following cheapest return flights from London (LCY) to Dublin (DUB) in September 2026 (see full year).

Return flights

14 Sep - 05 Oct British Airways direct
10 Sep - 17 Sep British Airways direct
01 Sep - 08 Sep British Airways direct
29 Sep - 30 Sep British Airways direct
21 Sep - 25 Sep British Airways direct
15 Sep - 17 Sep British Airways direct
24 Sep - 25 Sep British Airways direct
01 Sep - 10 Sep British Airways direct
08 Sep - 22 Sep British Airways direct
08 Sep - 08 Sep British Airways direct
18 Sep - 21 Sep British Airways direct

Also check the deals for one-way flights from London to Dublin in September.

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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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