€220 Find Cheap Flights from Boston to Ireland – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Ireland departing on 29/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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1 adult, Economy, 0 bags

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Best Ireland Flight Deals from Boston

Cheapest return prices found by our users on KAYAK in the last 72 hours
Dublin
Dublin1 stop€514
Cork
Cork1 stop€573
Shannon
Shannondirect€495
Milltown (Kerry)
Milltown (Kerry)2 stops€761
Dublin
Dublin1 stop€514
Cork
Cork1 stop€573
Shannon
Shannondirect€495
Milltown (Kerry)
Milltown (Kerry)2 stops€761

Cheap Flights from Boston to Ireland

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Boston to Ireland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Boston to Ireland

Tue, 6 Oct - Tue, 20 Oct
Multiple Airlines Logo
18:30 - 05:25
BOS
-
SNN
5h 55mdirect
Multiple Airlines Logo
16:05 - 21:05
SNN
-
BOS
34h 00m
2 stops
€495Multiple Airlines
Sat, 10 Oct - Wed, 21 Oct
Multiple Airlines Logo
18:30 - 05:25
BOS
-
SNN
5h 55mdirect
Multiple Airlines Logo
06:05 - 21:05
SNN
-
BOS
20h 00m
2 stops
€508Multiple Airlines
Sun, 16 Aug - Wed, 26 Aug
Multiple Airlines Logo
15:35 - 07:45
BOS
-
DUB
11h 10m
1 stop
Multiple Airlines Logo
09:40 - 14:41
DUB
-
BOS
34h 01m
3 stops
€514Multiple Airlines
Sun, 16 Aug - Wed, 26 Aug
Multiple Airlines Logo
15:35 - 07:45
BOS
-
DUB
11h 10m
1 stop
Multiple Airlines Logo
09:40 - 09:05
DUB
-
BOS
28h 25m
2 stops
€515Multiple Airlines
Wed, 14 Oct - Wed, 28 Oct
TAP AIR PORTUGAL Logo
18:05 - 00:05
BOS
-
DUB
25h 00m
1 stop
TAP AIR PORTUGAL Logo
16:55 - 15:40
DUB
-
BOS
26h 45m
1 stop
€517TAP AIR PORTUGAL
Sat, 15 Aug - Wed, 19 Aug
Aer Lingus Logo
16:55 - 05:10
BOS
-
DUB
31h 15m
1 stop
Aer Lingus Logo
13:20 - 09:53
DUB
-
BOS
25h 33m
1 stop
€518Aer Lingus
Fri, 2 Oct - Sun, 4 Oct
Icelandair Logo
20:50 - 13:15
BOS
-
DUB
11h 25m
1 stop
Icelandair Logo
12:15 - 21:45
DUB
-
BOS
14h 30m
1 stop
€519Icelandair
Mon, 12 Oct - Thu, 12 Nov
Icelandair Logo
23:00 - 13:15
BOS
-
DUB
9h 15m
1 stop
Icelandair Logo
11:30 - 17:50
DUB
-
BOS
11h 20m
1 stop
€521Icelandair
Wed, 18 Nov - Thu, 26 Nov
United Airlines Logo
06:00 - 09:55
BOS
-
DUB
22h 55m
1 stop
United Airlines Logo
09:00 - 10:17
DUB
-
BOS
30h 17m
1 stop
€522United Airlines
Mon, 7 Sep - Wed, 16 Sep
United Airlines Logo
10:38 - 07:30
BOS
-
SNN
15h 52m
1 stop
United Airlines Logo
09:30 - 01:10
SNN
-
BOS
20h 40m
1 stop
€552United Airlines
Booking Insights

KAYAK's insights & trends for Boston to Ireland flights

Get data-powered insights and trends into flights from Boston to Ireland to help you find the cheapest flights, the best time to fly, and much more.

What is the cheapest Boston to Ireland flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Ireland from Boston found in the last 5 days was to Dublin, at €560 return. The most popular route is from Boston (BOS) to Shannon (SNN), and the cheapest return airline ticket found on this route in the last 5 days was €790.

What is the cheapest time of day to fly to Ireland?

The average price for all round-trip flights from Boston to Ireland depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Ireland is generally in the evening, when retur flights cost €437 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Ireland is generally at night, which is peak travel time and where the average cost of a ticket is €560.

Can I save money by flying with a stopover from Boston to Ireland?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 1 stop stopover the cheapest option at €478 on average.

What is the cheapest month to fly from Boston to Ireland?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Ireland, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Ireland is January, when tickets cost €372 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of return tickets is €679 and €611 respectively.

What’s the cheapest day of the week to fly from Boston to Ireland?

The average price of all round-trip flights from Boston to Ireland clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Ireland on a Sunday, as we generally find the cheapest rates on that day for this route. On the other hand, Wednesday is the most expensive day to fly from Boston to Ireland. For your return ticket, we recommend flying on a Thursday and avoiding Sundays for the best deals.

How far in advance should I book a flight from Boston to Ireland?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to Ireland, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from Boston to Ireland, you should book around 3 weeks before departure, which saves you about 14% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low season

January

Cheapest flight

€220
Best time to beat the crowds (20% less expensive on average)
Most popular time to fly and prices are also 9% lower on average.
Flight from Boston to Cork

Flights from Boston to Ireland: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from Boston to Ireland 
LisaFlew with Aer Lingus
BOS
-
DUB
Dec 2025
Look at Jet Blue and Delta. May be a bit more expensive but keep an eye out for fare reductions and book early.
Verified travelerFlew with Aer Lingus
BOS
-
DUB
Jul 2025
Whatever airline you choose, spring for a class with more leg and overall body room than economy (or whatever the cheapest class is called).
BarbaraFlew with Aer Lingus
BOS
-
DUB
May 2024
Pack what you need in a carryon since it is likely you'll arrive without luggage.

FAQs - booking Ireland flights

  • If I am flying from Boston to Ireland, will I need a passport, and is it necessary to obtain a visa before my trip?

    As a citizen of the United States traveling to Ireland, you will need a passport that is valid for the entire duration of your stay in Ireland. Your passport must have at least one blank page for an entry immigration stamp. If you are traveling to Ireland as a tourist on vacation, you will not need a visa to travel to this country.

  • If I am landing at the airport in Dublin, are there any public transportation options to get me from the airport to the center of the city?

    One of the quickest and most cost-effective ways to get from the airport to the center of the city is aboard one of the buses provided by National Express. The trip will take around 25min for a cost of about €6 ($7).

  • If my final destination in Ireland is the seaside community of Cork, what is the best way for me to get there from Boston?

    While you can fly to Cork from Boston, most trips are going to require two or maybe three stops to get there. Another option that is going to be much quicker is to book a flight to the airport in Dublin and then hop aboard the bus service provided by Go Bus, which makes the trip from the airport in about 3h 30min for a cost of around €17 ($20).

  • Is Ireland a part of the Schengen area?

    Although Ireland is part of the European Union, they are not a part of the Schengen area. Currently, you can travel to the United Kingdom, including Northern Ireland, without any additional border checkpoints, but if you want to continue on from Ireland to any other country in the Schengen area, there will be border checkpoints to make the trip.

  • How does KAYAK find such low prices on flights from Boston to Ireland?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Ireland.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Ireland?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Boston to Ireland is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Ireland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Boston to Ireland with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Ireland?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Boston to Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Ireland

  • There are five international airports in Ireland. Of the five that are available, the only airport that offers nonstop service from Boston Logan International Airport (BOS) is Dublin Airport (DUB).
  • If you're looking for a convenient way to get from downtown Boston to the airport, you can purchase a ticket via the MBTA Blue Line, which makes the trip in about 5min at a cost of around $2.
  • Boston Logan Airport offers their AIRA System that connects passengers who are blind or have limited vision to live agents through a mobile app to help them navigate every step of their airport experience.
  • If you are looking for a place to relax before your flight to Ireland, Boston Logan Airport has airline club offerings from four different airlines located in Terminals A, B, and E.
  • If you are planning on driving yourself to Boston Logan Airport before your trip to Ireland, there are garages that sit right at the terminal buildings for your convenience. In addition, there are more cost-effective economy lots off-site that offer shuttle service to the terminal buildings from the lot.

Everything you need to know for your flight from Boston to Ireland

Information on your arrival and departure airports