Cheapest return flights from Shannon to Boston in September from $609

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

Return flights

29 Sep - 09 Oct British Airways
06 Sep - 20 Sep United
08 Sep - 15 Sep Air France
06 Sep - 20 Sep Aer Lingus direct
08 Sep - 15 Sep Aer Lingus direct
07 Sep - 17 Sep Aer Lingus direct
29 Sep - 09 Oct Aer Lingus direct
09 Sep - 19 Sep Aer Lingus direct
04 Sep - 18 Sep Aer Lingus direct

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

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 Boston

Cheap car rent in Boston

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