Aer Lingus offers 22-inch wide Business Class seats with a 6'5" lay-flat bed for comfort.
Aer Lingus provides free Wi-Fi for Business Class passengers on long-haul flights.

| Low season | February |
|---|---|
| High season | September |
| Cheapest flight | £230 |
Direct departures
Washington, D.C. Dulles Intl to Dublin
Monday
Aer Lingus, United Airlines
Aer Lingus, United Airlines
Tuesday
Aer Lingus, United Airlines
Aer Lingus, United Airlines
Wednesday
Aer Lingus, United Airlines
Aer Lingus, United Airlines
Thursday
Aer Lingus, United Airlines
Aer Lingus, United Airlines
Friday
Aer Lingus, United Airlines
Aer Lingus, United Airlines
Saturday
Aer Lingus, United Airlines
Aer Lingus, United Airlines
Sunday
Aer Lingus, United Airlines
Aer Lingus, United Airlines
Direct returns
Dublin to Washington, D.C. Dulles Intl
Monday
Aer Lingus, United Airlines
Aer Lingus, United Airlines
Tuesday
Aer Lingus, United Airlines
Aer Lingus, United Airlines
Wednesday
Aer Lingus, United Airlines
Aer Lingus, United Airlines
Thursday
Aer Lingus, United Airlines
Aer Lingus, United Airlines
Friday
Aer Lingus, United Airlines
Aer Lingus, United Airlines
Saturday
Aer Lingus, United Airlines
Aer Lingus, United Airlines
Sunday
Aer Lingus, United Airlines
Aer Lingus, United Airlines