Boston to Shannon Flights on Aer Lingus from $351.98*

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Book Boston to Shannon flight deals*

* Fares displayed include air transportation charges, taxes and fees. Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Fares are economy class and may include connections with our partner airlines. Modifying this information may result in a different fare. Additional baggage fees and charges for optional products and services may apply.

The Cliffs of Moher in County Clare, Ireland.
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Book Boston to Shannon flight deals*

$

Boston (BOS)to

Shannon (SNN)
May 26 2026 - Jun 3 2026

Roundtrip*

Economy

From
$401.98
Seen: 1 hour ago

Boston (BOS)to

Shannon (SNN)
Jun 9 2026 - Jun 19 2026

Roundtrip*

Economy

From
$426.98
Seen: 7 hrs ago

Boston (BOS)to

Shannon (SNN)
Jun 7 2026 - Jun 16 2026

Roundtrip*

Economy

From
$426.98
Seen: 9 hrs ago

Boston (BOS)to

Shannon (SNN)
Jun 4 2026 - Jun 16 2026

Roundtrip*

Economy

From
$426.98
Seen: 8 hrs ago

Boston (BOS)to

Shannon (SNN)
May 25 2026 - Jun 2 2026

Roundtrip*

Economy

From
$438.98
Seen: 1 hour ago

* Fares displayed include air transportation charges, taxes and fees. Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Fares are economy class and may include connections with our partner airlines. Modifying this information may result in a different fare. Additional baggage fees and charges for optional products and services may apply.