Boston to Dublin BOS → DUB
Logan International Airport (BOS) → Dublin Airport (DUB)
The cheapest return found recently is $816 with TAP Air Portugal, 24 Jun 2027 – 15 Jul 2027, found 2 days ago. The cheapest one-way found recently is $210 with Aer Lingus, 4 Dec, found yesterday.
Return
Not enough comparable prices yet for a usual return price.
Cheapest return found recently
$816
24 Jun 2027 – 15 Jul 2027 · TAP Air Portugal
Logan International Airport (BOS) → Dublin Airport (DUB)
Leaves 10:15 p.m. · Return leaves 5:30 a.m. · 35 h 5 min of travel, both ways together
out 1 stop, back 1 stop
found 2 days ago
Cheapest nonstop return
$365
2 Nov – 10 Nov · Aer Lingus
Logan International Airport (BOS) → Dublin Airport (DUB)
Leaves 5:15 p.m. · Return leaves 11:45 a.m. · 13 h 10 min of travel, both ways together
out nonstop, back nonstop
found 3 days ago
Found recently, and the cheapest we hold
$816 24 Jun 2027 – 15 Jul 2027found 2 days agoSee prices for these dates
$365 2 Nov – 10 Novfound 3 days agoSee prices for these dates
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $324 to $667.
At $816, the cheapest return found recently is above that range.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Not enough comparable prices yet: we hold return fares on 2 departure dates and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other 21-night return fares leaving within 3 days of 24 Jun 2027 to compare.
Every date we hold
2 fares on 2 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 2 Nov – 10 Nov | $365 | Aer Lingus | Logan International Airport (BOS) → Dublin Airport (DUB) | out nonstop, back nonstop | found 3 days ago | See prices for these dates |
| 24 Jun 2027 – 15 Jul 2027 | $816 | TAP Air Portugal | Logan International Airport (BOS) → Dublin Airport (DUB) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
Which month looks cheapest?
November 2026 is the cheapest month — from $365.
Airlines on the cheapest dates: Aer Lingus, TAP Air Portugal.
One-way
The cheapest one-way fare on each of 3 departure dates is usually $240 to $304.
Cheapest one-way found recently
$210
4 Dec · Aer Lingus
Logan International Airport (BOS) → Dublin Airport (DUB)
Leaves 5:15 p.m. · 6 h trip
stops unknown
found yesterday
Cheapest nonstop one-way
$269
3 Dec · Aer Lingus
Logan International Airport (BOS) → Dublin Airport (DUB)
Leaves 5:15 p.m. · 6 h trip
nonstop
found 6 days ago
Found recently, and the cheapest we hold
$210 4 Decfound yesterdayOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 8 days, 8 Oct to 18 Oct, the cheapest one-way we saw each day was $210 to $321.
At $210, the cheapest one-way found recently is at the low end of that range.
8 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 3 departure dates from 2 Dec to 4 Dec, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
No. We hold one-way fares on 2 other departure dates within 3 days of 4 Dec, and none is cheaper.
Every date we hold
3 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 2 Dec | $339 | United Airlines | Logan International Airport (BOS) → Dublin Airport (DUB) | 1 stop | found 6 days ago | Open this trip |
| 3 Dec | $269 | Aer Lingus | Logan International Airport (BOS) → Dublin Airport (DUB) | nonstop | found 6 days ago | Open this trip |
| 4 Dec | $210 | Aer Lingus | Logan International Airport (BOS) → Dublin Airport (DUB) | stops unknown | found yesterday | Open this trip |
Airlines on the cheapest dates: Aer Lingus, United Airlines.
Premium cabin fares from Boston to Dublin
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 24 Jun 2027 – 15 Jul 2027 in another cabin: Premium economy · Business · First
Today's prices for 4 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Boston to Dublin?
Return
Fares 60 to 89 days before departure were typically 8% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $521 | $499 | +9% | 13 |
| 7–13 days | $519 | $501 | +9% | 11 |
| 14–29 days | $504 | $365 | +6% | 11 |
| 60–89 days | $477 | $477 | Cheapest seen | 9 |
| 180+ days | $539 | $324 | +13% | 16 |
One-way
Not enough history yet: in 8 days of one-way prices, 8 Oct to 18 Oct, fewer than 3 booking ranges had prices on 7 days or more.
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Hartford → Dublin
142 km from Boston
$623
$193 less than flying from Boston
20 Mar 2027 – 27 Mar 2027 · BDL → DUB · out nonstop, back nonstop
found 3 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 24 Jun 2027 – 15 Jul 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work