$269 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 9/15. 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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Cheap Flights from Boston to Ireland

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Dublin
Dublin1 stop$421
Shannon
Shannonnonstop$601
Cork
Cork1 stop$621
Milltown (Kerry)
Milltown (Kerry)2 stops$602
Dublin
Dublin1 stop$421
Shannon
Shannonnonstop$601
Cork
Cork1 stop$621
Milltown (Kerry)
Milltown (Kerry)2 stops$602

Book Cheap Boston to Ireland Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip 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 round-trip flight deals from Boston to Ireland

Fri, Nov 6 - Sun, Nov 15
Aer Lingus Logo
5:45 am - 5:10 am
BOS
-
DUB
18h 25m
1 stop
Aer Lingus Logo
1:00 pm - 10:37 pm
DUB
-
BOS
14h 37m
1 stop
$421Aer Lingus
Thu, Dec 3 - Mon, Dec 7
Aer Lingus Logo
5:45 am - 5:10 am
BOS
-
DUB
18h 25m
1 stop
Aer Lingus Logo
1:00 pm - 10:37 pm
DUB
-
BOS
14h 37m
1 stop
$424Aer Lingus
Sat, Oct 10 - Sat, Oct 17
Icelandair Logo
8:50 pm - 11:05 am
BOS
-
DUB
9h 15m
1 stop
Icelandair Logo
2:15 pm - 6:50 pm
DUB
-
BOS
9h 35m
1 stop
$425Icelandair
Thu, Nov 5 - Sun, Nov 8
Aer Lingus Logo
11:10 am - 5:10 am
BOS
-
DUB
13h 00m
1 stop
Aer Lingus Logo
1:00 pm - 10:37 pm
DUB
-
BOS
14h 37m
1 stop
$426Aer Lingus
Thu, Sep 10 - Fri, Sep 18
Icelandair Logo
8:50 pm - 11:05 am
BOS
-
DUB
9h 15m
1 stop
Icelandair Logo
12:15 pm - 9:45 pm
DUB
-
BOS
14h 30m
1 stop
$453Icelandair
Sun, Aug 16 - Tue, Aug 25
United Airlines Logo
7:05 am - 7:30 am
BOS
-
SNN
19h 25m
1 stop
United Airlines Logo
9:30 am - 7:19 pm
SNN
-
BOS
14h 49m
1 stop
$619United Airlines
Sun, Aug 16 - Tue, Aug 25
United Airlines Logo
6:07 pm - 10:15 am
BOS
-
SNN
11h 08m
1 stop
United Airlines Logo
9:30 am - 9:59 pm
SNN
-
BOS
17h 29m
2 stops
$620United Airlines
Sun, Aug 2 - Tue, Aug 18
Delta Logo
9:45 pm - 2:40 pm
BOS
-
ORK
11h 55m
1 stop
Delta Logo
5:15 pm - 1:18 pm
ORK
-
BOS
25h 03m
1 stop
$623Delta
Wed, Sep 9 - Wed, Sep 16
Delta Logo
5:15 pm - 2:40 pm
BOS
-
ORK
16h 25m
2 stops
Delta Logo
6:15 am - 1:19 pm
ORK
-
BOS
12h 04m
1 stop
$626Delta
Wed, Sep 9 - Wed, Sep 16
KLM Logo
8:25 pm - 10:35 pm
BOS
-
ORK
21h 10m
1 stop
KLM Logo
10:50 am - 4:35 pm
ORK
-
BOS
10h 45m
1 stop
$632KLM
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 $494 round-trip. The most popular route is from Boston (BOS) to Dublin (DUB), and the cheapest round-trip airline ticket found on this route in the last 5 days was $494.

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 at night, when round-trip flights cost $607 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 in the evening, which is peak travel time and where the average cost of a ticket is $655.

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

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $794, prices are generally cheapest when you fly direct.

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 $311 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $994 and $702 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.

When flying from Boston to Ireland, you should consider leaving on a Tuesday and avoid Fridays if you are looking for the best rates. For your return to Boston, you’ll find the best rates on Thursdays and the most expensive ones on Sundays.

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 the flight from Boston to Ireland, you should book around 2 weeks before departure, which saves you about 9% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$269
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 19% increase in price.
Flight from Boston to Shannon

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

Insights shared by verified travelers 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 travelers 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 round-trip 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