Thai Airways Check-In Glitch Frustrates Frequent Flyers

Thai Airways is facing renewed criticism from frequent flyers who report that they cannot reliably add loyalty program numbers to their reservations, a recurring glitch that travelers say is undermining online check-in and mileage credit across the carrier’s digital channels.

Digital Promises Collide With Loyalty Frustrations

Thai Airways promotes its Royal Orchid Plus program as a core part of its customer proposition, encouraging members to attach their frequent flyer details at the time of booking or during check-in to secure automatic mileage credit. Publicly available information on the airline’s own help pages explains that passengers should be able to update or change their Royal Orchid Plus or other Star Alliance frequent flyer numbers through the “manage booking” and online check-in flows, including an option to edit loyalty details during internet check-in.

In practice, however, recent traveler accounts suggest that this functionality remains unreliable. Over the past months, passengers have described situations where the frequent flyer field in their booking appears visually present but is effectively locked, displaying a prohibition symbol or failing to save changes. Others report that online check-in screens reference loyalty identification as a valid way to locate a booking, yet do not provide an obvious field to input a frequent flyer number, forcing customers to fall back on booking references or ticket numbers.

These issues are not entirely new. User reports stretching back several years describe intermittent faults on the Thai Airways website and mobile platforms, including failed login attempts to the Royal Orchid Plus area and incomplete or inconsistent online check-in flows. What has changed in early 2026 is the volume of recent complaints clustered around the specific task of adding or updating frequent flyer numbers, particularly where tickets were booked via third parties or corporate travel agencies.

Recent Cases Highlight a Pattern of Locked Fields

One of the clearest illustrations of the current problem comes from travelers who discovered, after booking, that their frequent flyer number was missing or incorrect. Attempts to correct the detail in the “traveller information” section often ran into a hard stop: other fields such as phone number or passport data were editable, but the frequent flyer field either failed to respond or appeared visually disabled.

Online discussions from March 2026 show Star Alliance frequent flyers struggling to add partner numbers such as Miles & More to Thai Airways tickets. In some cases, passengers said their company travel desks had been unable to attach the number during purchase, leaving travelers to try to fix the problem themselves via Thai’s website or app. When those attempts failed, customers were left unsure whether they would receive credit for long-haul itineraries without further intervention at the airport.

Another thread of complaints concerns the interaction between these locked fields and Thai Airways’ broader online check-in system. Travelers describe being directed to use frequent flyer credentials as one of several ways to access web or mobile check-in, only to find that the loyalty data on file is missing, incomplete or impossible to amend. That, in turn, can disrupt seat selection, advance passenger information updates and other pre-departure steps that many flyers now expect to handle entirely online.

Workarounds Shift the Burden Back to the Airport

Against this backdrop of inconsistent digital performance, regular flyers have begun to share pragmatic workarounds. A common suggestion is to wait until airport check-in and present the physical or digital frequent flyer card at the counter, asking staff to attach the number manually to the booking before boarding passes are printed. Recent first-hand accounts indicate that this approach often succeeds in getting miles credited, even when online channels have failed.

Others advise contacting Thai Airways by email or telephone to request that loyalty information be added in the background. Several travelers report that their bookings were updated after reaching out to a contact center or dedicated customer service channel, although response times and ease of communication appear to vary by region. Some passengers also note that the airline’s mobile app, which has been updated with new features including member profile management and mileage claims, can occasionally process changes that the main website rejects, though this is not guaranteed.

These offline and semi-offline solutions, while helpful in individual cases, shift much of the burden back onto passengers. Instead of a straightforward self-service fix within the booking interface, travelers must remember to bring membership details to the counter, allocate extra time at the airport, or navigate customer service queues. For those connecting between multiple Star Alliance carriers, especially on tight itineraries, the inability to confirm correct loyalty data during online check-in introduces an extra layer of uncertainty.

Implications for Royal Orchid Plus and Star Alliance Earnings

The practical consequence of not being able to add a frequent flyer number to a Thai Airways reservation is most visible in the mileage statement. Public guidance from Royal Orchid Plus encourages members to check that the name and membership number on their boarding passes match their loyalty account details to ensure automatic credit, and offers an online process for claiming missing miles when flights fail to post within a few days.

For travelers aiming to credit Thai-operated flights to other Star Alliance programs, the stakes can be higher. Some programs have stricter time limits or more complex claim procedures for retroactive mileage credit, and may require boarding passes or original receipts as proof. If a number is not properly stored in the booking before travel, passengers can find themselves engaged in lengthy back-and-forth exchanges after the trip to secure the miles they expected.

In a competitive loyalty landscape where status qualification often depends on a fine balance of segments and miles, uncertainty around earnings can influence booking behavior. Reports of persistent problems with something as basic as attaching a frequent flyer number risk eroding confidence not just in Royal Orchid Plus, but in Thai Airways’ role as a Star Alliance partner for status-conscious travelers who value seamless accrual across carriers.

Usability Gaps Undercut Thai’s Digital Upgrade Narrative

Thai Airways has been promoting the evolution of its digital platforms, highlighting enhancements to its mobile app that promise real-time flight status updates, access to e-boarding passes, mileage statements and member profile management. Official documentation for internet check-in describes a relatively straightforward flow in which passengers review their details and, if necessary, edit their Royal Orchid Plus or other frequent flyer information before confirming their boarding passes.

The reality described by many users points to a gap between design intent and everyday functionality. Visual bugs such as missing input fields, non-responsive buttons and fields that appear required but cannot be edited contribute to a perception of fragility in the airline’s digital stack. For travelers accustomed to the more polished apps and websites of some global competitors, these glitches stand out sharply and can color their perception of the broader travel experience.

As leisure and business demand into Thailand continues to recover, the carrier’s ability to deliver reliable, intuitive digital tools will remain under close scrutiny. The current wave of complaints about frequent flyer numbers and online check-in may be technically minor compared with operational issues such as delays or lost baggage, but in a loyalty-driven market they carry outsized symbolic weight. For now, frequent flyers advising each other to “bring your card to the counter and double-check your number” suggest that confidence in Thai Airways’ self-service tools still has ground to recover.