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Aer Lingus vs Delta Air Lines Business Class Comparison

Aer Lingus Delta Air Lines
Rating 7/10 8/10
Seat type Lie-flat Delta One Suite with Privacy Door
Lie-flat Yes Yes
Seat width 21 inches 22 inches
Alliance SkyTeam
IATA EI DL
Hubs Dublin (DUB) Hartsfield-Jackson Atlanta (ATL), John F. Kennedy International (JFK), Los Angeles International (LAX)

Aer Lingus — Pros & Cons

  • + US pre-clearance in Dublin saves time at arrival
  • + Competitive transatlantic pricing
  • + Good connectivity to Europe
  • Only A330 for long-haul
  • No alliance (partner of IAG)
  • Lounge at Dublin basic

Delta Air Lines — Pros & Cons

  • + Delta One Suite has a closing door — rare for US carriers
  • + Strong domestic connectivity from multiple hubs
  • + Consistent service quality for a US airline
  • Delta One Suite only on A350 and A330-900; older 767 lacks door
  • Wine and dining trail top international carriers

The verdict

Delta Air Lines takes the edge with a 8/10 rating compared to 7/10 for Aer Lingus. Delta Air Lines stands out with its Delta One Suite with Privacy Door, while Aer Lingus offers Lie-flat. Both airlines provide lie-flat business class seats, so the best choice depends on your route, schedule, and personal preferences.

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