How long is the flight from Boston to Dublin?

Non-stop flights on BOS → DUB are typically around 6.5 hours. Connecting itineraries add 3–8 hours depending on the hub and layover.

Which airlines fly from Boston to Dublin?

The main carriers on this route are Aer Lingus, Delta, American. Codeshare and one-stop options add several more — the filter panel above shows every airline in the current fare set.

When is the cheapest time to fly from Boston to Dublin?

Historically the lowest fares land in February, March, November. Summer (mid-June through mid-August) and the Christmas / New Year window are always peak. Mid-week departures (Tuesday–Thursday) typically beat weekend prices by 10–20%.

How far ahead should I book Boston to Dublin?

Six to ten weeks ahead is the sweet spot for this route. Inside three weeks, fares tend to spike as airlines sell to last-minute business travellers. Award availability often opens 10–11 months out if you're booking on miles.

Can I book directly on destination.com?

The Book button on each fare opens the airline or OTA (Trip.com, Kiwi, Expedia, Booking, Priceline, etc.) that's actually selling that ticket. You complete payment there at the same price you saw here — we never add a markup.

BOS → DUB

Boston to Dublin flights.

Live cached fares on Boston (BOS) → Dublin (DUB), refreshed every 30 minutes. Non-stop and connecting itineraries side by side — compare airlines, times and stops, then book in one click.

Flying time
~6.5h non-stop
Airlines
Aer Lingus, Delta, American
Cheapest months
February, March, November

Flex dates · cheapest nearby

Loading prices…

Read our best-time-to-book guide for BOS → DUB →Target price, booking window, weekday pattern.

See 30-day price history for BOS → DUB →Median fare, lows, and best-day patterns.

No cached fares for exactly 2026-07-23 → 2026-07-30. Showing recent fares on BOS → DUB — pick a different date in the calendar above or run a live search.

Boston → Dublin · 4 fares12-month low · $629

Cached from Travelpayouts · filter & sort below

Showing 4 of 4 results

Cheapest
PD · PD 2938
OutboundBOS → DUBSat, Aug 8 · 11:10 AM· 8h 32m· 1 stop
ReturnDUB ← BOSMon, Aug 17 · 9:40 AM· 10h 9m· 2 stops
$629
total round-trip
Book →
Aer Lingus · EI 132
OutboundBOS → DUBFri, Jul 17 · 9:25 PM· 6h 10m· Non-stop
ReturnDUB ← BOSMon, Jul 20 · 3:45 PM· 7h 5m· Non-stop
$688
total round-trip
Book →
Icelandair · FI 630
OutboundBOS → DUBThu, Jul 16 · 12:50 AM· 7h 50m· 1 stop
ReturnDUB ← BOSSat, Jul 18 · 6:40 PM· 9h 47m· 1 stop
$740
total round-trip
Book →
TS · TS 618
OutboundBOS → DUBFri, Jun 19 · 10:35 PM· 8h 30m· 1 stop
ReturnDUB ← BOSTue, Jun 23 · 9:25 AM· 11h 50m· 2 stops
$795
total round-trip
Book →

Try a nearby airport

Thin routes often have more options from a neighbouring airport.

Hartford (BDL) → Dublin (DUB)

nearby origin

Providence (PVD) → Dublin (DUB)

nearby origin

About Boston → Dublin

Aer Lingus dominates; great value in shoulder season and pre-clearance in DUB cuts customs on the way back.

Typical non-stop flying time is around 6.5 hours. Major carriers on this route include Aer Lingus, Delta, American. Fares are usually cheapest in February, March, November — book 6–10 weeks ahead and avoid school-holiday peaks (late June–August, Christmas–New Year) for the best pricing.

Month-by-month price guide: Boston to Dublin

Live cheapest round-trip fare cached on BOS → DUB for each of the next 12 months. Tap any month and run a live search to confirm.

Jun
Peak
from $795
Jul
Shoulder
from $688
Aug
Low
from $629
Sep
No data
Oct
No data
Nov
No data
Dec
No data
Jan
No data
Feb
No data
Mar
No data
Apr
No data
May
No data

Cheapest next 12 months: August from $629 round-trip. Run a live search →

Booking window tip

Medium-haul is the classic 6-10 week booking window. Fares drift down as the departure gets closer until about 21 days out, then start climbing fast. Tuesday and Wednesday departures are typically 10-18% cheaper than Friday or Sunday.

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Questions, answered

How long is the flight from Boston to Dublin?
Non-stop flights on BOS → DUB are typically around 6.5 hours. Connecting itineraries add 3–8 hours depending on the hub and layover.
Which airlines fly from Boston to Dublin?
The main carriers on this route are Aer Lingus, Delta, American. Codeshare and one-stop options add several more — the filter panel above shows every airline in the current fare set.
When is the cheapest time to fly from Boston to Dublin?
Historically the lowest fares land in February, March, November. Summer (mid-June through mid-August) and the Christmas / New Year window are always peak. Mid-week departures (Tuesday–Thursday) typically beat weekend prices by 10–20%.
How far ahead should I book Boston to Dublin?
Six to ten weeks ahead is the sweet spot for this route. Inside three weeks, fares tend to spike as airlines sell to last-minute business travellers. Award availability often opens 10–11 months out if you're booking on miles.
Can I book directly on destination.com?
The Book button on each fare opens the airline or OTA (Trip.com, Kiwi, Expedia, Booking, Priceline, etc.) that's actually selling that ticket. You complete payment there at the same price you saw here — we never add a markup.