4.85★ from 7,004,258 ratings · version 7.15 · 44 of the last 50 written reviews are one or two stars
App extremely slow and frequently times out
5of the 44 read·11%
Users report the app is incredibly slow to load and refresh information, regularly times out, and fails to process checkouts correctly even on good connections.
›read 3 of these reviews
“Slow to refresh info — Waiting 22 minutes now for info to refresh. This isn’t great when having a tight connection. Tried both cellular and wifi, and every other website is loading fine for me so not a connection issue on my side” — ★☆☆☆☆ · English“Terrible — Incredibly slow and constantly giving error messages. I end up having to contact them via chat which I truly hate. For as much as I pay on their tickets, their app should be flawless.” — ★☆☆☆☆ · English“Constantly times out — I’ve been Delta loyal for 15 years. This is by far the worst the app has been. Extremely slow, regularly times out, checkouts don’t process correctly leaving tickets unbooked. I think we’re seeing the tail end of a great run for Delta, unfortunately…” — ★☆☆☆☆ · English
App fails to complete bookings and save passenger data
4of the 44 read·9%
Users cannot complete bookings or save traveler information; the app loses passenger details, doesn't populate names, and fails to save changes during checkout.
›read 3 of these reviews
“Populate Name — The app does not populate the passenger name in the find my flight tab. The app as my data. Why not load the passenger name to start a search with confirmation number?” — ★★☆☆☆ · English“App won’t allow booking; has cost me hundreds — App will not save my traveler contact info (phone number) and has now twice cost me over $100 as prices went up before I could get to a computer to book. Not a fan. 🤬 Edit: I ended up booking my current trip on United.” — ★☆☆☆☆ · English“Not for families, or anyone really — I tried to book a family trip using the Fly Delta app on my iPhone. Adding my family members is a nightmare. The information does not display after saving, and when moving to seating selection, it requires me to enter it again. And then it still does not display. There does not appear to be a way to get the other passengers to show up, even though checking the Save traveler box…” — ★☆☆☆☆ · English
App randomly logs users out without warning
3of the 44 read·7%
Reviewers say the app constantly logs them out unexpectedly, especially frustrating when they need to show boarding passes at the airport.
›read 3 of these reviews
“logs you out when you need it — this app is constantly logging me out, which is a real pain when you’re in line at the airport need to show your boarding pass. I can’t fathom why they don’t fix this.” — ★☆☆☆☆ · English“Disconnects boarding pass — Even while logged into my account, the app has twice now disconnected my boarding pass from the app while I’m in line for the flight, so I have to jump out of line go back into my email and re-sync the boarding pass.” — ★★☆☆☆ · English“Worried — The app won’t acknowledge upon activation. Only way to go into the app is through an email from Delta.” — ★☆☆☆☆ · English
Payment and credit card authentication broken or blocked
3of the 44 read·7%
Users stuck in authentication loops with payment methods, unable to pay for upgrades or complete purchases, with some basic ticket types blocking payment options.
›read 3 of these reviews
“Terrible experience — I have never written an app review before but the Delta iPhone app did not let me go to my payment to buy my ticket. I’m sure this is because I bought a Basic ticket without opting for any upgrades or insurance. I was able to switch to a laptop but if you only have your phone they have you over a barrel.” — ★★☆☆☆ · English“Impossible to Use Credit Card — All I want to do is upgrade my seats and pay using my credit card. This is impossible to do. I am stuck in a credit card authentication loop between the delta app and my wells fargo app. This isn't rocket science. It's incompetence in technical leadership.” — ★☆☆☆☆ · English“Delta makes is impossible to use e-credits — Every time I have e-credits they require me to call in just to use the e-credits. I end up waisting an hour going through the IVR, waiting on hold, and then having to have the representative book looking the flight, take my credit card, and book the same flight that is blocked on the checkout EVERY TIME I USE E-CREDITS.” — ★☆☆☆☆ · English
App displays content incorrectly or cuts off information
3of the 44 read·7%
Text and information get cut off on screen, don't fit the page, or disappear entirely; app breaks with larger font settings or displays blank pages for wallet and profile.
›read 3 of these reviews
“design not mobile friendly — I love the functionality of this app. Unfortunately, in one of their “upgrades”, they took away the functionality that adapts screen size when you have your iPhones set to larger fonts. As a result, the app is basically useless now because I can’t read the left and right content. For example, flight info is cut off, so I have nothing useful at all. Delta needs to do a better job testing…” — ★★☆☆☆ · English“Ticket info — When I click on ticket info, it expands larger than the page…so it doesn’t all fit and it’s out of view. It works fine on their webpage. A bummer since An app should make things easier.” — ★☆☆☆☆ · English“App Doesn’t Work — App won’t display Skymiles, my wallet, or my profile. All those pages are blank.” — ★☆☆☆☆ · English
New app versions require iOS 17 or higher, making the app unusable on older iPhones like the iPhone 7 and 8 that cannot support the required OS.
›read 3 of these reviews
“The IOS 17.0 — Just because I have not updated my iPhone, I cannot up date the app from Delta. I would need to download the IOS 17.0, but since my iPhone is an 8, it does not support the 17.0. Ugh!” — ★★☆☆☆ · English“I like the old app — You’re making me change my system for an upgrade an ISO 17 that’s nice when people wanna waste money on a new system at their expense” — ★☆☆☆☆ · English“What happened to backwards compatibility? — I cannot use your app anymore unless I buy a new iPhone. My iPhone 7 cannot run the iOS version your updated app requires. You lose a previously satisfied customer thus.” — ★☆☆☆☆ · English
Apple publishes the most recent written reviews, up to five hundred, and that is what was read — not a search for bad ones. Why so many of them are angry. The complaints above come from the 44 most recent negative ones. Newest review 5 days ago (03.09.2026), last collected 2 days ago.