KLM Reviews: Is It Legit?

KLM - Book a flight
KLM - Book a flight
KLM Koninklijke Luchtvaart Maatschappij N.V.

Customer Experience

Positive experience40.3% of reviews
Neutral7.8% of reviews
Negative experience51.9% of reviews

~ Based on 1,488 written reviews from the US App Store.

What users say about KLM

Is KLM Safe?

KLM - Book a flight appears safe based on user ratings. AppsHunter Safety Score for KLM is 95/100.

This assessment is based on 53,149 user ratings, with an App Store average of 4.8/5.

Safety Analysis

94.5% of ratings point to a safe experience
1.8% of ratings suggest some concerns
3.7% of ratings point to a risky experience

~ Based on 52,115 App Store ratings for KLM.

Is KLM Legit?

KLM - Book a flight appears to be a legitimate app. AppsHunter Legitimacy Score for KLM is 100/100.

Based on 100 of 100 points across 7 verification signals from App Store and developer data.

Top reviews

Login Still Does Not Work!!!

Login STILL does not work in the app! It’s been nearly two months that login does not work.

No option to choose

We have no options to choose or upgrade the seat.

First time on KLM

Once logging into my Chase, Sapphire, Reserve Concierge‘s phone call they were able to assist me on getting my KLM confirmation number to log into the KLM app to be able to upgrade my seat extra legroom from Boston. Very friendly and helpful and understanding thank you Alvin.

Several messages of technical error

It took four or five attempts to log into my account to check in to my flight. I received a security pin each time and just ended up back where I started. I love KLM, but this process of downloading the app, logging in was extremely tedious and frankly, I do not know why.?

Needs work

Getting there! After only 45 min it looks like we may succeed in checking in for our international flights. Fingers crossed!

App fine, customer service the worst

8+ hours on hold waiting for response. You can do everything right and they’ll fail you and not apologize or make it right.

Pratique

On perd pas de temps

Martin Black

Terrible, booked upgrade moved me back to economy and removed case in hold I paid for
No option to speak to anyone after waiting 20minutes gave up
Useless and avoid if you want stress free travel

Food

Insufficient food for the trip otherwise service is excellent.

Superior

Easy to use

Scamsters

paid them 300$ extra so that i xan have flexibility and comfort during the trip but they ended up cancelling amd loving the flight wasting both my time and money. All staff were extremely rude, and kept on sayung its not their job and someone else to help in this situation. I wish these airlines company burn
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John

It could be better. I would like to have tried to upgrade my seat with points or cash. But I can’t see how.

How can an airline app be this bad?

Actually, the KLM app might be decent. But I wouldn’t know because it is impossible to login to the app using the same credentials I use to logon to the KLM website. Always an “Unexpected technical error has occurred” message. And that’s after waiting 20 to 30 second for the app to respond after entering email, password, and login code. A shockingly bad app.
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Feedback on our KLM booking.

Dear KLM,

It has been over 50 years since I last flew with KLM, and this will be my wife’s first time ever flying with you.

We normally fly First Class, even on the A380, so we are not particularly difficult to please! We are, however, a bit new to flying locally, so we ended up asking a million questions.

Your agent was incredibly pleasant, helpful and, most importantly, patient with us. For that, we give her 5 stars.

It was also nice to discover that my memory from flying with KLM back in the 1960s had not failed me!

Thank you,
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Great all

Really enjoyed using this app. Easy to manage your upcoming flight and loved that the experience changes on day before departure to offer clear steps and guidance for your upcoming trip 😍

Nearly useless

Outrageously difficult process

After 2 weeks, V26.0.3 does not work with iOS 27.0.

Update: two weeks and multiple big reports later, it’s still not possible to even log into the app. Great work, KLM.

The review title says it all. You can’t use the app at all with iOS 27.0. Login doesn’t work. When you enter your Flying Blue number or email address in the first login screen, the app doesn’t do anything. It doesn’t use faceID, and it doesn’t let you use a passkey, and it does t let you enter a password. If you tap “login with password” instead, the app displays a spinning circle on the page where you enter your Flying Blue number or user ID and you password, even before you enter anything into either field. Entering the information in both fields continues to display the spinning circle and the app never attempts to log you in.
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Die schlechteste Erfahrung mit einer Fluggesellschaft überhaupt!

Am 9. Juli 2026 habe ich Tickets für eine wichtige Geschäftsreise gebucht, für die Unterkunft und Transfer vom Flughafen Alicante (Spanien) bereits vollständig bezahlt und geplant waren. Das Unternehmen hat meinen Flug einseitig storniert.

Obwohl alternative Verbindungen über Amsterdam verfügbar waren, wurde mir als Passagier mit Behinderung die Möglichkeit, einen passenden Flug für den 3. technisch blockiert, und man hat mir eigenmächtig einen Flug am folgenden Tag zugewiesen. Mir wurde die denkbar schlechteste Option aufgezwungen: Abflug um 6 Uhr morgens, 11 Stunden Reisezeit und 2 Zwischenstopps!

Der Kundenservice hat meine Anfragen komplett ignoriert: Es ist unmöglich, im Chat einen echten Mitarbeiter zu erreichen – man wird einfach mit einem nutzlosen Bot allein gelassen.

Sich als „Premium“-Airline zu positionieren und gleichzeitig Passagiere mit besonderen Bedarfen derart im Regen stehenzulassen und sämtliche geschäftlichen Pläne zu ruinieren, ist eine Schande. Absolut nicht zu empfehlen!
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Communications

Franchement, la méthode de communication par Messenger est efficace. Et malgré le fort volume d’occupation de vos agents, les réponses ont été très rapides et claires !! Merci beaucoup !

Hopeless app for booking flights

Won’t let you select a flight when booking. Do they test the app before launching? Used updated app and Had to start again as payment froze with no explaining.