AirHint found the following cheapest return flights from Kansas City (MCI) to Dublin (DUB) in December 2025 (see full year).

Return flights

02 Dec - 10 Dec	KLM
23 Dec - 17 Jan	Air Canada
28 Dec - 17 Jan	United
10 Dec - 17 Dec	Aer Lingus
02 Dec - 09 Dec	Aer Lingus
04 Dec - 11 Dec	Aer Lingus
06 Dec - 13 Dec	Aer Lingus
08 Dec - 15 Dec	Aer Lingus
26 Dec - 09 Jan	Delta
23 Dec - 29 Dec	Air Canada
12 Dec - 19 Dec	Aer Lingus
16 Dec - 23 Dec	Aer Lingus
22 Dec - 29 Dec	Delta
30 Dec - 04 Jan	Spirit Airlines
31 Dec - 04 Jan	Frontier Airlines
30 Dec - 06 Jan	Aer Lingus
28 Dec - 04 Jan	Aer Lingus
26 Dec - 02 Jan	Aer Lingus

Also check the deals for one-way flights from Kansas City to Dublin 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 Kansas City to Dublin in December from $433

Return flights