Cheapest return flights from Boston to Shannon in May from 563€

AirHint found the following cheapest return flights from Boston (BOS) to Shannon (SNN) in May 2026 (see full year).

Return flights

09 May - 13 May Aer Lingus direct
28 May - 16 Jun Aer Lingus direct
28 May - 08 Jun Aer Lingus direct
09 May - 16 May United
23 May - 01 Jun Air France
29 May - 07 Jun KLM
28 May - 20 Jun Delta
23 May - 01 Jun Aer Lingus direct
04 May - 09 May Aer Lingus
16 May - 25 May United
03 May - 28 Jun Icelandair
02 May - 28 Jun United
14 May - 30 May Icelandair
14 May - 31 May LEVEL
04 May - 28 Jun United
14 May - 19 May jetBlue
17 May - 23 May British Airways
15 May - 23 May British Airways
01 May - 28 Jun United

Also check the deals for one-way flights from Boston to Shannon in May.

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 Shannon

Cheap car rent in Shannon

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