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Trying to complete your Aer Lingus check in but the website or app will not let you proceed? An Aer Lingus check in problem can be caused by something as simple as entering the wrong booking reference, checking in outside the permitted window, or needing an airport document check.
In other cases, the problem may be related to your itinerary, a partner airline, travel-document requirements, or a temporary technical issue.
The good news is that being unable to complete Aer Lingus online check in does not automatically mean there is a problem with your ticket. Aer Lingus provides airport check-in assistance, and its own online check-in guidance says passengers who cannot obtain a boarding pass should go to the airport check-in desk.
There are several possible reasons your Aer Lingus online check in is not working. The most common are:
Your flight is not yet within the online check-in period.
Your booking reference or passenger details are incorrect.
Your itinerary includes another airline.
Aer Lingus needs to verify your passport, visa, or other travel documents.
Your journey has special requirements that prevent normal online check-in.
Your booking has recently been changed or disrupted.
The Aer Lingus website or app is experiencing a temporary technical problem.
You have reached a point where airport check-in is required.
The right solution depends on the message you see and the type of booking you have.
One of the easiest explanations for an Aer Lingus check in unavailable message is simply timing.
Aer Lingus's general travel guidance states that online check-in has been available from 48 hours before departure for flights within Europe and 24 hours before transatlantic flights. However, Aer Lingus's current route-specific flight pages now state that online check-in opens 48 hours before departure on a number of transatlantic routes as well.
Because Aer Lingus displays different timing information across its pages, the safest approach is to use the check-in option associated with your specific booking and follow the timing shown there.
If your flight is still outside its permitted check-in window, repeatedly refreshing the page will not make check-in available.
Check:
Your departure date and local departure time.
Whether online check-in has opened for your specific flight.
Whether you are attempting to check in for the correct flight segment.
Whether your itinerary has changed since you booked it.
If your flight should already be eligible and check-in remains unavailable, continue with the checks below.
Aer Lingus says its booking reference is six characters long and begins with the number 2. The reference can be found in your booking confirmation email or by logging into your Aer Lingus account.
This matters particularly when you booked through a travel agency, online travel agency, or another airline. The reference shown by the seller may not be the reference you need for Aer Lingus online check-in.
Aer Lingus specifically advises customers who booked through a third party to contact that provider if they need help with the booking.
Enter the details exactly as shown in your Aer Lingus booking:
Booking reference
Passenger surname
Flight details requested by the check-in page
Avoid copying spaces or adding characters that are not part of the reference.
Partner-airline itineraries can make online check-in less straightforward.
Aer Lingus's online check-in instructions acknowledge bookings involving other airlines and specifically provide instructions for some British Airways and Iberia bookings.
If your trip contains flights operated by different carriers, check which airline operates the particular flight you are trying to check in for.
For example, you may have purchased one itinerary but have one sector operated by a partner. In that situation, the operating airline may control the check-in process for that flight.
Look at your booking confirmation and identify:
The airline operating each flight
The flight number
Whether the flights are on one ticket
Which segment you are attempting to check in for
If the itinerary involves another airline and Aer Lingus does not allow you to check in, the operating carrier may be the correct place to complete check-in.
Sometimes an Aer Lingus boarding pass not available message is not a technical problem at all.
Airlines may need to verify travel documents before issuing a boarding pass. This can include passports, visas, entry permissions, or other destination-specific documentation.
Aer Lingus has also previously required certain travelers to complete travel-document checks before online check-in for specific destinations. Its guidance for travel to the USA and Portugal, for example, has included document verification requirements.
If the system accepts your booking but does not issue a boarding pass, do not assume that your reservation has been cancelled.
Instead, check the travel-document requirements for your itinerary and look for instructions in your booking.
An Aer Lingus check in problem today can sometimes be caused by the website or app rather than your reservation.
Typical signs include:
The check-in page repeatedly reloads.
A button does nothing when selected.
The booking cannot be retrieved even though the details are correct.
The app displays an error while the website works.
Check-in starts but fails before the boarding pass is issued.
Before assuming there is a booking problem, try a few basic troubleshooting steps.
Try:
Switching from the Aer Lingus app to the website.
Switching from the website to the Aer Lingus app.
Using another browser.
Opening a private/incognito browser window.
Clearing the browser cache.
Switching from Wi-Fi to mobile data, or vice versa.
Updating the Aer Lingus app.
Restarting your phone or computer.
Aer Lingus says its app supports check-in and securely stores boarding passes, so trying the app is a sensible alternative when the website is not behaving normally.
If Aer Lingus has changed your itinerary, your original boarding pass may no longer be valid.
Aer Lingus's guidance for rebooked flights says passengers should check in again for the new flight using the same booking reference and obtain a new boarding pass. This applies even if they had already checked in for the original flight.
Therefore, if your flight was cancelled, delayed and rebooked, or otherwise changed, do not rely on an old boarding pass.
Use the updated flight information and:
Retrieve the booking with the same reference.
Check in for the new flight.
Obtain a new boarding pass.
If online check-in still fails, go to the airport check-in desk.
Not every passenger who encounters an online check-in problem needs to solve it online.
Aer Lingus's own online check-in instructions state that if you cannot obtain your boarding pass, you should go to the check-in desk at the airport.
This is particularly important if your departure is approaching.
Do not spend the final minutes before your flight repeatedly trying different browsers while ignoring the airport's check-in deadline.
Use this sequence before heading to the airport:
Make sure the date, route and flight number are correct.
Use the Aer Lingus booking reference from your confirmation rather than assuming that a reference from a third-party seller is the correct one.
Make sure online check-in is actually open for your itinerary.
If the website fails, try the Aer Lingus app. If the app fails, try the website.
Review the passport, visa and destination requirements associated with your journey.
Look for emails or messages from Aer Lingus about schedule changes, cancellations or rebooking.
A different browser, device or internet connection can eliminate local technical problems.
If you still cannot complete check-in or obtain your boarding pass, use the airport check-in desk. Aer Lingus specifically directs passengers there when a boarding pass cannot be obtained online.
If you have completed the check-in process but cannot see your Aer Lingus boarding pass, first check the app and the website.
Aer Lingus says boarding passes can be saved through its app, while website users can save the pass as an image or to Apple Wallet. A PDF version can also be accessed through Manage Trip for passengers who want a printed copy.
If the boarding pass still cannot be produced, go to the airport check-in desk.
The important distinction is between not seeing a boarding pass and not being checked in. Do not assume that a missing digital pass means you have no reservation. Airport staff can determine the status of your booking and complete any required checks.
Usually, a failed online check-in attempt does not by itself mean you cannot travel.
If your booking is valid but online check-in cannot be completed, Aer Lingus provides airport check-in as an alternative. Its online check-in guidance explicitly tells passengers who cannot obtain a boarding pass to go to the airport check-in desk.
The important issue is time. Do not wait until the last moment if you know online check-in is failing.
Aer Lingus's conditions of carriage define a check-in deadline as the time by which the required check-in formalities must be completed and a boarding pass obtained.
If your Aer Lingus check in problem today is happening on the day of travel, prioritize getting to the airport rather than spending a long time troubleshooting.
Bring:
Passport or other required identification
Visa or entry documentation, if applicable
Booking confirmation
Any relevant travel-document approvals
Your phone with the Aer Lingus app installed, if possible
If online check-in does not work, go directly to the appropriate Aer Lingus check-in area and explain that you could not obtain your boarding pass online.
If your itinerary has been disrupted or changed, mention that as well.
A few simple preparations can reduce the chance of problems on departure day.
Keep your booking confirmation accessible offline. Your booking reference is especially useful if you need airport assistance.
Aer Lingus says its app supports online check-in and can store your boarding pass for offline access.
Do not wait until check-in opens to discover that additional documentation is required.
Schedule changes and rebookings can invalidate information from the original itinerary. If Aer Lingus rebooks you, check in again for the new flight and obtain a new boarding pass.
Even when online check-in is available, airport processing can take time, particularly during busy travel periods.
The most common reasons include checking in outside the permitted window, entering incorrect booking information, having an itinerary involving another airline, needing travel-document verification, a recent flight change, or a temporary website/app problem.
Try the Aer Lingus app if the website fails, or the website if the app fails. You can also try another browser, device or internet connection. If the problem continues, Aer Lingus advises passengers who cannot obtain their boarding pass to use the airport check-in desk.
First check whether check-in has opened for your particular flight. Aer Lingus currently publishes different check-in timing information across some pages, so the instructions associated with your specific itinerary should take priority.
A boarding pass may not be issued when additional document verification is required or when the online check-in process has not completed successfully. If you cannot obtain it online, Aer Lingus directs passengers to the airport check-in desk.
Yes. Aer Lingus provides airport check-in as an alternative when passengers cannot complete online check-in or obtain their boarding pass.
Yes. Aer Lingus supports check-in through its app, and the app can securely store your boarding pass for access during your journey.
You need to check in again for the new flight and obtain a new boarding pass. Aer Lingus says passengers can use the same booking reference to check in for the replacement flight.
Your booking may involve a different reference or require assistance from the agency. Aer Lingus advises customers with third-party bookings to contact the original booking provider when they need help with the booking.
An Aer Lingus check in problem does not necessarily mean that your flight reservation is invalid. In many cases, the cause is straightforward: check-in has not opened, the wrong booking details were entered, the itinerary involves another carrier, travel documents require verification, or the website or app is temporarily failing.
Start by checking your flight timing and booking reference, then try both the Aer Lingus website and app. If your flight has been changed, make sure you are checking in for the new itinerary.
Most importantly, if you cannot obtain an Aer Lingus boarding pass, do not keep troubleshooting until departure is close. Aer Lingus itself advises passengers who cannot get their boarding pass online to go to the airport check-in desk.
For the most reliable information, use Aer Lingus's official check-in and support pages for your specific itinerary rather than relying on a generic check-in time published elsewhere.
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