Cheap flights from Boston to Shannon from $263

In general, January is the cheapest month to fly from Boston to Shannon, Clare. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $442. If you are unable to visit Shannon, Clare during the month of January, then departing from Boston during the month November is also very affordable. Most momondo users find prices during this month for around $444.

The cheapest day to depart from Boston to Shannon, Clare is on a Friday when prices can be found for as low as $575. The most expensive day to fly to Shannon, Clare is Monday, with ticket prices averaging around $647.

Our data shows that the cheapest Boston to Shannon, Clare flights are usually those with departure times in the evening. Our users have found flights to Shannon, Clare in the evening for as low as $537. Flights in the afternoon are often more expensive with an average ticket price of $648.

Fly from Boston Logan Intl to Shannon for the best Boston Logan Intl - Shannon flight prices

You are more likely to see cheaper flights to Shannon, Clare from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Shannon, Clare for around $605 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Shannon, Clare from Boston for as low as $564 on momondo.

There are 4 cabin classes available to choose from on Boston to Shannon, Clare flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

United Airlines is the most popular carrier operating from Boston Logan Intl to Shannon

Aer Lingus, American Airlines and United Airlines are the top three most popular airlines that fly to Shannon, Clare from Boston according to our data. Aer Lingus is the first choice among our users, with 82% of people opting to fly with this airline when traveling to Shannon, Clare. Keep in mind that there are 8 different airlines that fly to Shannon, Clare on a routine basis, so you have a few additional options to choose from.

Chicago (ORD) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Flights via New York (JFK) offer the lowest average round-trip price of $788.

Flights connecting via Chicago (ORD) have the shortest average one-way travel time: 11h 22m.

Chicago (ORD) has the shortest average layover time for this route: 1h 04m.

As of July 2026, there are 5 flights per day flying from Boston to Shannon, Clare. The most common time of day flights depart is 6:00PM, with 100% of flights taking off in the evening.

The number of flights available between Boston and Shannon, Clare is 35 per week as of July 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.