Updated July 2026
Aer Lingus and Delta operate direct Dublin to Boston Logan services year-round. The westbound flight takes approximately 6.5 hours — one of the shorter transatlantic crossings from Dublin. All US-bound passengers benefit from US Preclearance at Dublin Airport, clearing US Customs and Border Protection before departure. Use the live search below to compare current fares, then check the route guide for airline, ESTA, and booking details.
Aer Lingus and Delta operate year-round direct services between Dublin Airport and Boston Logan International Airport (BOS). Aer Lingus typically flies with its Airbus A330 fleet, departing early afternoon from Dublin to arrive in Boston in time for evening. Delta positions the route as part of its transatlantic network, connecting to its wider US network at BOS.
The westbound flight is approximately 6.5 hours — notably shorter than New York or Chicago routes — making Dublin–Boston one of the most comfortable transatlantic crossings. US Preclearance at Dublin Airport means all US-bound passengers clear US Customs and Border Protection before departure. Allow at least 3.5 hours before your scheduled flight time to complete Preclearance and security.
Fares are lowest in January–February and mid-October to mid-November. The summer season (June–August) and Christmas see the sharpest fare increases. Boston has a large Irish-American community which drives particularly high demand around St Patrick's Day (mid-March) — book well in advance if travelling then. The Irish population in Boston makes this one of the most emotionally booked transatlantic routes from Dublin.
Irish passport holders travelling to the US need a valid ESTA (Electronic System for Travel Authorization) under the Visa Waiver Program. Apply at the official US government portal (esta.cbp.dhs.gov) before check-in — most approvals are instant but some take up to 72 hours. An ESTA costs $21 and is valid for 2 years. Do not use third-party ESTA websites that charge significant additional fees.
Yes. Aer Lingus and Delta both operate direct non-stop flights from Dublin Airport (DUB) to Boston Logan International Airport (BOS). The westbound flight takes approximately 6.5 hours, making it one of the shorter transatlantic crossings.
Yes. Irish passport holders travelling on the Visa Waiver Program must have a valid ESTA before boarding. Apply at esta.cbp.dhs.gov — it costs $21 and is valid for 2 years. Avoid third-party ESTA sites that charge extra fees.
US Preclearance means US Customs and Border Protection is physically located at Dublin Airport. You clear US immigration before departure, landing in Boston as a domestic passenger with no US immigration queue on arrival. Allow at least 3.5 hours before your flight.
Aer Lingus and Delta both operate from Terminal E (International) at Boston Logan. Verify your terminal on your booking confirmation before arranging ground transport.
January–February and mid-October to mid-November are typically the cheapest periods. Avoid summer (June–August), Christmas, and — on this route particularly — St Patrick's Day week in mid-March when demand spikes significantly.
The Silver Line (SL1 bus) runs free from the airport terminals to South Station in downtown Boston. From Airport station on the Blue Line, the MBTA subway connects to downtown. Taxis and rideshare are available from all terminals.
Booking 8–12 weeks in advance generally secures the best fares. For St Patrick's Day travel, book at least 3 months ahead. Transatlantic fares rise sharply inside 3 weeks of departure.
Aer Lingus operates year-round direct flights from Dublin Airport (DUB) to Boston Logan International Airport (BOS). American Airlines also operates direct seasonal DUB–BOS services. The flight takes approximately 7–7.5 hours westbound. US Preclearance at Dublin Airport means you clear US customs before departure and arrive at Boston as a domestic passenger.
Yes, significantly. US Preclearance means US Customs and Border Protection (CBP) is located at Dublin Airport. You clear all US immigration, customs, and agriculture inspection before you board. On arrival at Boston Logan, you come off the plane into the domestic arrivals area — no immigration queues, no customs hall. This saves 30–90 minutes on arrival and means Boston Logan's T-Bus (Silver Line) or MBTA connections are immediately accessible.
January and February offer the cheapest DUB–BOS fares. Late October and November are also good value. The peak period is summer (June–August), when Boston's tourism season coincides with peak transatlantic demand. The Christmas and New Year period also commands high prices. Book 8–12 weeks in advance for the best summer availability.