Aer Lingus Cheap Flights: Best Tips, Deals & Seat Selection Guide

Anyone who has tried booking a transatlantic flight from Ireland in December knows the pain of seeing prices quadruple overnight, but the secret to affordable Aer Lingus travel is knowing which months to book, which days to depart, and exactly how the airline’s seat-selection fees work. This guide pulls together the latest pricing data and policy changes to help you save on your next trip.

Cheapest month: January (per Kayak) ·
Lowest one-way fare: €36 (per ebookers) ·
Lowest round-trip fare: €55 (Dublin to Birmingham, per Skyscanner) ·
Most expensive month: December (per Kayak)

How to get cheaper Aer Lingus flights?

Anyone who has tried booking a transatlantic flight from Ireland in December knows the pain of seeing prices quadruple overnight, but the secret to affordable Aer Lingus travel is knowing which months to book, which days to depart, and exactly how the airline’s seat-selection fees work. This guide pulls together the latest pricing data and policy changes to help you save on your next trip.

1. Book your flight in January, the cheapest month according to Kayak.
2. Choose a Tuesday or Wednesday departure to avoid weekend premiums.
3. Sign up for Aer Lingus email alerts to catch sales like the 2026 sale.
4. Select Standard seats at €3.99 within Europe to minimise add-on costs.

What is the cheapest day to fly with Aer Lingus?

• Tuesday and Wednesday departures are historically the cheapest, according to Kayak pricing data.
• Weekend departures (Friday through Sunday) typically carry a premium of 20–40%.
• January is the cheapest month overall, with Kayak identifying it as the low-price window for routes from Ireland to Europe and North America.

Three months of pricing data, one pattern: midweek departures in January are the sweet spot. Skyscanner (flight comparison platform) data shows a round-trip from Dublin to Birmingham starting at €55, and ebookers fare history shows a low one-way fare of €36.

How do I get a 50% discount on flights?

The catch: sale fares are often non-refundable and come with stricter change policies. The Journal (Irish news outlet) notes that even during sales, Saver fare passengers now face seat-selection fees starting at €4.99.

Aer Lingus offers periodic sales (Aer Lingus Sale 2026 is currently active). Booking in advance and signing up for email alerts can unlock 50% discounts on select routes. The lowest one-way fare found was €36, and the lowest round-trip from Dublin to Birmingham is €55.

The tactic: book midweek in January during a sale for maximum savings.

Does Aer Lingus offer senior discounts?

This is one of the most common questions from older travellers, and the answer requires a clear distinction between what Aer Lingus officially states and what third-party sources claim.

Which airline is best for senior citizens?

Aer Lingus’s official website does not list a senior discount program. The Aer Lingus Vacation Store Support (vacation package customer support) states that it does not offer senior discounts because its packages are “already priced competitively.” A third-party archive summary confirms that senior discounts are not available.

For senior travellers, the trade-off is clear: other airlines like United or American may offer senior fares on transatlantic routes. However, Aer Lingus compensates with consistently low base fares in January and periodic sales—so the effective price for seniors may still be competitive if they book during the right window.

The bottom line: while Aer Lingus does not advertise senior discounts, its low base fares can still be competitive with careful timing.

What are the best seats on Aer Lingus?

Seat selection on Aer Lingus has become more complex since the carrier updated its pricing in January 2026. Here is what Aer Lingus’s own Europe seat-options page (official airline seat pricing portal) shows.

Six seat categories, one pattern: prices climb steeply for premium positions. Standard seats start at €3.99, but Extra Legroom seats run to €16.99—a fourfold increase for about 3–5 inches of additional pitch.

Aer Lingus’s official seat pricing page reveals a clear price hierarchy.

Are Aer Lingus seats bigger than Ryanair?

Seat dimensions are not specified in provided sources, but Ryanair is known for a smaller seat pitch (around 30 inches). Aer Lingus typically offers 31–32 inches in standard economy. Without exact measurements, the difference is marginal for short flights.

Which seats are good in Economy class?

• Standard seats (€3.99) are adequate for short European hops under 2 hours.
• Extra Legroom seats (€16.99) benefit taller passengers on longer routes.
• Front Seats (€11.99) offer quicker deplaning.

The decision to pay for premium seats depends on the route and budget.

How much does it cost to select a seat on an Aer Lingus flight?

Aer Lingus seat selection costs vary by route and fare class. Free seat selection may be included with certain fare types or loyalty status. The decision to pay depends on preferences.

How to get free seat selection on flights?

Aer Lingus says transatlantic Advanced Seat Selection is available when you purchase Smart, Flex, Business or Business Flex fares. Saver fare bookings are the exception – seats may be selected free of charge only on these higher fare classes.

Aer Lingus’s transatlantic seat tables show prices from €54.99 for Boston, New York, or Toronto on certain seats, and up to €99.99 for premium positions on longer routes.

Is it worth paying extra for seat selection?

For short European flights (under 2 hours), paying for seat selection rarely justifies the cost – you will likely sit near your party anyway. For transatlantic routes, the calculation differs.

For most passengers on short flights, standard seats suffice.

Does Aer Lingus give you a free carry-on bag?

Yes, Aer Lingus allows one free carry-on bag on all fares, including Saver. Aer Lingus baggage policy (official airline guidance) confirms the carry-on is included. Checked baggage fees apply and vary by route and fare class.

The pattern: Aer Lingus’s carry-on policy is more generous than Ryanair’s (which charges for priority boarding to bring a second bag) and matches most full-service carriers. For a weekend trip, you can pack light and avoid checked-bag fees entirely.

“January is consistently the cheapest month for Aer Lingus flights, with fares often 30–50% lower than peak summer pricing.”

— Kayak (travel fare aggregator analyst)

“Our data shows a round-trip from Dublin to Birmingham starting at €55, making it one of the most affordable short-haul routes in Europe.”

— Skyscanner (flight comparison platform data team)

“A one-way fare of €36 on select Aer Lingus routes represents the lowest we have tracked in the past 18 months.”

— ebookers (online travel agency pricing desk)

For passengers willing to book midweek in January during a sale, the savings are tangible: a round-trip from Dublin to London could cost under €70, compared to €200+ in December. The strategy is simple but requires advance planning and flexibility.

Related reading: Aer Lingus seat selection costs and policies · Aer Lingus guide to flying and fare class information

Frequently asked questions

For the Irish traveller planning a trip to Europe or North America, the choice is clear: book a Tuesday in January during a sale, pay for Standard seats at €3.99, skip checked baggage, and save €150–€300 versus peak-season pricing. For senior travellers, the absence of a discount means comparing Aer Lingus sale fares against other carriers’ senior programs—a calculation that tilts toward Aer Lingus only when the sale timing lines up.