Aer Lingus vs United
On the best documented aircraft, Aer Lingus scores 5/10 for the business seat and United 8/10. The aircraft on your booking decides whether those seats apply.
By Jon Miksis · comparison updated
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What matters for your booking
Business fares
Of 12 shared business routes, Aer Lingus was cheaper on 9, United on 3, and 0 were the same price.
Economy fares
Of 25 shared economy routes, Aer Lingus was cheaper on 6, United on 19, and 0 were the same price.
Start with your route and cabin. A fare advantage in economy does not establish a business-class bargain, and a better seat does not establish that a connection or a higher fare is worth it for your trip.
The business seats being compared
These are each airline’s best-scoring documented business aircraft. The fare grid does not identify aircraft, so the seat below is not promised with any fare in the table. Service and food require a separate firsthand review.
Aer Lingus
A330-300
- Seat layout
- 2-2-2
- Fully flat bed
- Yes
- Direct aisle access at every seat
- No
- Privacy door
- No
- Seat score
- 5/10
- Wi-Fi
- Paid in the recorded product
- Lounge access
- Included in the recorded fare
- Checked bags
- 2
Cabin checked .
Recorded source: Aer Lingus Seats & Cabin pages, A330 seat maps.
United
777 / 787 (Polaris)
- Seat layout
- 1-2-1
- Fully flat bed
- Yes
- Direct aisle access at every seat
- Yes
- Privacy door
- No
- Seat score
- 8/10
- Wi-Fi
- Paid in the recorded product
- Lounge access
- Included in the recorded fare
- Checked bags
- 2
Cabin checked .
Recorded source: United Polaris pages, fleet seat maps.
Seat scores describe bed, aisle access and privacy door only. Read the scoring method. A tie does not compare comfort, food, service or reliability.
Check the aircraft on Aer Lingus
A330-300: 5/10 for the seat. A staggered mix of 1-2-1 and 1-2-2 rows, so roughly 90% of seats reach an aisle directly and the paired seats do not. Un-retrofitted ex-Qatar frames are worse again. Recorded August 30, 2026.
A321neo LR / XLR: 5/10 for the seat. Aer Lingus' own site states 60% of seats have aisle access on this aircraft, which contradicts third-party pages calling it 1-2-1. The carrier's figure is the one used here. Four throne seats are the ones worth chasing. Recorded August 30, 2026.
Check the aircraft on United
777 / 787 (Polaris): 8/10 for the seat. The 767-300ER and 767-400ER run an unusual 1-1-1 layout with no paired seats at all, which is more private again. Select 787-9s add Polaris Studio suites with doors in the front rows. Recorded August 30, 2026.
767-300ER / 767-400ER: 8/10 for the seat. 1-1-1: no adjacent pairs anywhere in the cabin, the most private Polaris layout. Recorded August 30, 2026.
Compare the fares and the routing
Each row compares the same airports, cabin, travel dates and observation date. It can still compare a nonstop against a connection. Journey times, aircraft, baggage allowances and change rules were not recorded with these fares; check those before treating the price difference as a saving.
Showing 12 of 12 matched business routes. Round trip per person in USD, for travel November 8–14, 2026.
| Route and observation date | Aer Lingus | United | Price difference |
|---|---|---|---|
Chicago (ORD) → Dublin (DUB) Observed September 1, 2026 Compare all observed airlines | $8,010Nonstop | $4,854Nonstop | United was $3,156 less |
Chicago (ORD) → Rome Fiumicino (FCO) Observed September 1, 2026 Compare all observed airlines | $4,863Connects via DUB | $4,880Nonstop | Aer Lingus was $17 less |
Washington DC (IAD) → Amsterdam (AMS) Observed September 1, 2026 Compare all observed airlines | $5,762Connects via DUB | $5,322Nonstop | United was $440 less |
Chicago (ORD) → Amsterdam (AMS) Observed September 1, 2026 Compare all observed airlines | $5,379Connects via DUB | $12,201Nonstop | Aer Lingus was $6,822 less |
Chicago (ORD) → Paris Charles de Gaulle (CDG) Observed September 1, 2026 Compare all observed airlines | $5,488Connects via DUB | $5,416Nonstop | United was $72 less |
Washington DC (IAD) → Barcelona (BCN) Observed September 1, 2026 Compare all observed airlines | $5,520Connects via DUB | $5,963Nonstop | Aer Lingus was $443 less |
Washington DC (IAD) → Dublin (DUB) Observed September 1, 2026 Compare all observed airlines | $5,668Nonstop | $11,685Nonstop | Aer Lingus was $6,017 less |
Chicago (ORD) → Barcelona (BCN) Observed September 1, 2026 Compare all observed airlines | $5,727Connects via DUB | $6,692Nonstop | Aer Lingus was $965 less |
Chicago (ORD) → Edinburgh (EDI) Observed September 1, 2026 Compare all observed airlines | $5,798Connects via DUB | $14,890Connects via EWR | Aer Lingus was $9,092 less |
Philadelphia (PHL) → Rome Fiumicino (FCO) Observed September 1, 2026 Compare all observed airlines | $6,784Connects via DUB | $7,358Connects via IAD | Aer Lingus was $574 less |
Miami (MIA) → Edinburgh (EDI) Observed September 1, 2026 Compare all observed airlines | $7,665Connects via DUB | $12,090Connects via EWR | Aer Lingus was $4,425 less |
San Francisco (SFO) → Edinburgh (EDI) Observed September 1, 2026 Compare all observed airlines | $7,727Connects via DUB | $14,049Connects via EWR | Aer Lingus was $6,322 less |
Your airport missing? Check the full route tool for the airlines we observed there. Confirm current fares, journey time, baggage and ticket rules before booking.
Before paying for the ticket
- Check the exact operating airline and seat map on every long flight, including the return. An airline name or business-class label alone does not guarantee a flat bed or aisle access.
- Compare total journey time and connection length. A lower fare may buy a much longer trip.
- Reprice with your bags, preferred seats and change rules included. These observations do not establish that the tickets have identical restrictions.
- Check other airlines on the route. Being cheaper than the other airline on this page does not establish the cheapest fare in the market.
Common questions
- Is Aer Lingus or United better in business class to Europe?
- On the best documented aircraft, Aer Lingus scores 5/10 for the business seat and United 8/10. The aircraft on your booking decides whether those seats apply. Of 12 shared business routes, Aer Lingus was cheaper on 9, United on 3, and 0 were the same price. Service and food are not scored in this comparison. These are observations for travel November 8–14, 2026, not current quotes.
- Which is cheaper, Aer Lingus or United?
- Of 12 shared business routes, Aer Lingus was cheaper on 9, United on 3, and 0 were the same price. Of 25 shared economy routes, Aer Lingus was cheaper on 6, United on 19, and 0 were the same price. Both counts refer to travel November 8–14, 2026. A cheaper fare may involve a connection; compare the itinerary as well as the price.
- Will I get the business seat shown here?
- These cards describe the named aircraft in our cabin records, not a seat guaranteed on every flight. At least one of these airlines has a recorded aircraft or cabin variation. Check the operating airline, seat map and aircraft for every segment before paying; equipment can change. The fare observations do not record the aircraft.
- Has Jon flown these business cabins?
- Aer Lingus business class is not on Jon’s confirmed flown roster. United business class is on Jon’s confirmed flown roster. That records the airline and cabin, not every aircraft or itinerary. This page compares documented specifications and dated fares.
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