If Aer Lingus does not let you check in online, there are several possible reasons related to your booking details, travel requirements, or flight type. One common reason is that your booking may require manual document verification, especially for international flights or routes with stricter immigration policies. For example, if you are traveling to the United States or another country with additional security or visa checks, Aer Lingus may not allow online check-in to ensure all required information is verified in person at the airport. Another reason could be missing or incorrect passenger information, such as an error in your name, passport number, or travel document details. If your booking contains incomplete data or if your passport information hasn’t been added for international travel, the online check-in system may block access until it is corrected or confirmed at the airport.
Sometimes, technical issues or temporary glitches in the Aer Lingus website or app can also cause problems with online check-in. This can happen if the system is undergoing maintenance or experiencing high traffic. In such cases, trying again after some time or using a different device or browser may help. Additionally, if you booked your flight through a third-party travel website, your reservation might not be fully integrated with the Aer Lingus system, making it impossible to check in online. These bookings often need to be managed directly at the airport counter, especially if changes have been made or details are not synced properly.
Passengers traveling in large groups or with special assistance needs may also be required to check in at the airport. If your booking includes multiple passengers under one reservation, or if someone in the group has requested special services such as wheelchair support or assistance for minors traveling alone, online check-in may be restricted. This ensures airline staff can assist in person and confirm any special requirements are properly handled. Similarly, if you have added pets, musical instruments, or sports equipment to your booking, you might be asked to check in at the airport to confirm handling procedures and related documents.
In some cases, your fare type may affect your ability to check in online. Certain basic or promotional fares might require in-person check-in due to limitations on changes, baggage, or seat selection. Also, if there are pending payments or optional services that haven’t been completed—such as prepaid baggage or extra legroom seats—the system may prevent check-in until those charges are settled.
Lastly, if your flight schedule has changed, or if there’s a delay, cancellation, or aircraft swap, the system may restrict online check-in to ensure you are informed of the update. In these cases, airport staff will help confirm your new itinerary and provide any required updates.
In summary, Aer Lingus may not allow online check-in due to document verification needs, booking errors, technical issues, special requests, fare restrictions, or schedule changes. To avoid problems, always review your travel details in advance and complete check-in early. If online check-in is unavailable, arriving early at the airport is the best way to avoid delays and ensure a smooth boarding process.