Cheap flights from Boston to Dublin
Typical low fare $390 round-trip. Best months to fly: Jan–Mar.
Typical low
$390
Updated October 7 at 3:30 AM· via Travelpayouts partner feed
$263 low$273 high
When to fly BOS to Dublin
Best months for the cheapest fares on this route: Jan–Mar.
Aer Lingus runs famously cheap BOS-DUB direct flights.
How to get the best price on this route
- Book 6–8 weeks ahead for international routes; 3–4 weeks for short-haul.
- Fly midweek (Tue/Wed) — weekend departures cost 15–25% more.
- Compare across 100+ booking sites. Our partner feed surfaces vendors you’ve never heard of that often beat the majors.
- Set a price alert below to be the first to know when the fare drops below $390.
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Make it a trip
Stay in Dublin
Bundle flight + hotel to save another 10–20%. Pricing via Expedia.
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