How to Find Cheap Flights to Ireland

Ireland Is More Affordable to Reach Than You Think

Transatlantic flights to Ireland have gotten significantly cheaper thanks to competition from budget carriers and increased route options. Roundtrip fares from the US East Coast regularly dip below $350, and sub-$300 deals pop up several times per year. From the West Coast, expect $400-600 roundtrip during off-peak periods.

The key is knowing when to book, which airports to target, and which airlines to watch.

When to Book for the Cheapest Fares

Best Months to Fly

November is the cheapest month to fly to Ireland, with average roundtrip fares around $260-350 from the East Coast. January, February, and early March are also bargain months. You'll deal with shorter days and cooler weather, but Ireland's charm doesn't disappear in winter -- pubs are cozy, crowds vanish, and you'll have castles practically to yourself.

The most expensive time is June through August, when everyone wants to visit. Summer fares can hit $800-1,200 roundtrip. If you must fly in summer, book 4-5 months early and be flexible on dates.

Best Days to Fly

Tuesday and Wednesday departures are consistently the cheapest days to fly to Ireland. Saturday is the most expensive. A midweek departure saves $50-150 compared to weekend flights on the same route.

Booking Window

Book 2-4 months before departure for the best fares. For summer travel, push that to 4-6 months. Last-minute transatlantic flights are almost always expensive.

Cheapest US Airports for Ireland Flights

Not all US airports are created equal when it comes to Ireland routes:

• New York (JFK, EWR) -- The most competitive route with multiple carriers. Cheapest average fares to Dublin.
• Boston (BOS) -- Strong Irish-American connection means lots of flights and competitive pricing. Aer Lingus hub.
• Hartford (BDL) -- Aer Lingus offers direct flights at prices often lower than Boston or New York.
• Philadelphia (PHL) -- American Airlines flies direct. Good deals during sales.
• Chicago (ORD) -- Multiple direct options to Dublin with competitive fares.

West Coast travelers should check connecting routes through East Coast hubs. A positioning flight to JFK or BOS plus a cheap transatlantic leg can sometimes beat a direct flight from LAX or SFO.

Best Airlines for Cheap Ireland Flights

Aer Lingus

Ireland's flag carrier frequently offers the best fares between the US and Ireland. They fly direct from Boston, New York, Chicago, Hartford, Philadelphia, and other cities. Their economy class is decent for a transatlantic flight, and they include a checked bag on most fares. Watch for their regular sales -- they run promotions every few months with fares as low as $250 roundtrip.

Norwegian/Play/Iceland Budget Carriers

Budget transatlantic carriers sometimes offer incredibly cheap fares, but often with connections through Reykjavik. Fares can drop below $200 roundtrip during sales. Read the fine print on baggage fees -- a $200 fare with $100 in bag fees isn't as good as a $350 all-inclusive fare.

Legacy Carriers

United, American, and Delta all fly to Dublin. They're rarely the cheapest option at full price, but they run sales that compete with Aer Lingus. Their connections through London or European hubs can also yield surprisingly low fares.

Dublin vs. Shannon vs. Other Irish Airports

Dublin (DUB) gets the most flights and the lowest fares, but don't ignore alternatives:

• Shannon (SNN) -- Direct flights from the US, and it's the gateway to the Wild Atlantic Way, Cliffs of Moher, and western Ireland. Sometimes cheaper than Dublin for the same dates.
• Cork (ORK) -- Fewer direct US flights but reachable via connections. Good base for southern Ireland.
• Belfast (BFS) -- Technically Northern Ireland (UK), but only 2 hours from Dublin. Budget carriers sometimes offer screaming deals here.
• Knock (NOC) -- Small airport in the west with some transatlantic service.

If your trip focuses on western Ireland, flying into Shannon instead of Dublin saves hours of driving and sometimes money too.

Tools and Strategies

Set Price Alerts

Google Flights, Skyscanner, and Kayak all let you track specific routes. Set alerts for your preferred dates and they'll email you when prices drop. Ireland fares fluctuate a lot, so catching a dip can save hundreds.

Use Fare Deal Sites

Going (formerly Scott's Cheap Flights), Secret Flying, and The Flight Deal regularly feature Ireland deals. East Coast to Dublin under $300 roundtrip appears multiple times per year on these sites.

Check Connecting Routes

Flights connecting through London, Amsterdam, or Paris can be cheaper than direct flights. The trade-off is a longer travel day, but savings of $100-200 can make it worthwhile.

Book One-Way on Different Airlines

Sometimes mixing airlines -- one carrier outbound, another for return -- produces cheaper total fares than a roundtrip on either. Google Flights and Kiwi.com make this easy to compare.

Hidden Costs to Watch For

• Baggage fees vary wildly between carriers -- Aer Lingus includes a checked bag; budget carriers charge $40-80 each way
• Seat selection fees add up on budget carriers
• Dublin airport taxis cost about 30-40 euros to the city center; the Airlink Express bus is 7 euros
• No visa needed for US citizens staying under 90 days, saving you that hassle and cost
• Travel insurance -- consider it for transatlantic trips, especially if booking non-refundable fares

Sample Budget Strategy

Here's how a savvy traveler finds a cheap Ireland flight:

• Set Google Flights alerts for your nearest airport to Dublin and Shannon
• Target November, January, or February travel dates
• Choose a Tuesday or Wednesday departure
• Book when fares hit the $250-350 range roundtrip
• Fly Aer Lingus for the included bag and direct route
• Compare against connecting flights through Reykjavik or London for potentially lower fares

With patience and flexibility, most East Coast travelers can get to Ireland for under $350 roundtrip. West Coast travelers should target under $500.