Verithiathe honest score on any app
Updated July 2026 · real, multi-region App Store reviews
Head-to-head

United Airlines vs Fly Delta

United Airlines 4.8★ · Free to download 60
Winner Fly Delta
Fly Delta 4.8★ · Free to download 80

Fly Delta is the better choice for a smoother app experience.

While both apps have their strengths, Fly Delta generally provides a more reliable and user-friendly experience according to user reviews. United Airlines users frequently report issues with app functionality and customer service, whereas Fly Delta users appreciate its communication and ease of use.

Head to head

features edge: Fly DeltaR5R6R68R77
United Airlines Users appreciate United's ability to manage bookings and check-in but criticize its bag tracking and update issues.
Fly Delta Fly Delta users praise the app's flight information updates and ease of accessing boarding passes.
ease of use edge: Fly DeltaR30R58R92R117
United Airlines United users often find the app complicated and not intuitive, with many needing to log in repeatedly.
Fly Delta Fly Delta users generally find the app user-friendly, though some report login issues.
reliability edge: Fly DeltaR46R54R96R118
United Airlines United's app has numerous reports of crashing and slow performance.
Fly Delta Fly Delta users also report bugs, but many mention that the app works well most of the time.
price/value tieR56R48R79R119
United Airlines United's app is free, but users express frustration over additional fees and service charges.
Fly Delta Fly Delta is also free and users feel it offers good value, with fewer complaints about hidden fees.
support edge: Fly DeltaR1R4R61R68
United Airlines United users often report poor customer service experiences, especially during flight cancellations.
Fly Delta Fly Delta users appreciate the quick communication and support when issues arise.
Pick United Airlines if

you prefer United Airlines and want to support their app development despite its current issues.

Pick Fly Delta if

you want a more reliable and user-friendly app experience.

Evidence note: While both apps are free to download, United's reviews are heavily skewed with complaints about functionality and customer service, indicating a more significant gap in user satisfaction.

Frequently asked

Which app is better for checking flight status?
Fly Delta is generally preferred for checking flight status due to its reliable updates and user-friendly interface, as noted by users who appreciate timely notifications.

What reviewers actually said

Built only from these 120 real reviews (foreign ones translated). Superscripts jump to the quote here. Apple has no per-review links, so [ref] opens that app's reviews on the App Store.

  1. [R5] United Airlines 5/5 · US Check In Process: Using the app was easy and intuitive.
  2. [R6] United Airlines 3/5 · US Bag tracking not front and center: Bag tracking is hidden in my opinion as I have to go back to Home Screen to find link. Why can’t I do it when I’m at the Boarding Pass screen which is where I’m at when waiting on a flight
  3. [R68] Fly Delta 5/5 · US Such a wonderful user experience: This is simply a wonderful app. I recently experienced 3 flight delays due to thunderstorms across the east coast. The Delta app immediately sends me a gate change update via the mobile app and text message. It has the most accurate flight information, so I don’t have to read the possibly outdated flight boards at the airport. I love how easy it is to access board
  4. [R77] Fly Delta 5/5 · US Best airline app in the US: I fly constAntly and have top level status on all major IS carriers. Delta’s app is superior and beyond comparison. You literally never have to call the 1-800 number unless there are very unusual circumstances. As with all things regarding Delta, it’s the best in the industry and the best in the country and they continued to improve every day. I love this airline, I lov
  5. [R30] United Airlines 3/5 · GB United: Not an easy site to navigate
  6. [R58] United Airlines 1/5 · US Awful: Miserable app interface. Extremely non user friendly
  7. [R92] Fly Delta 4/5 · US Login Every Time: Generally, the app is very good and I can accomplish what I want to. But since the last major update, I now have to log into the app every single time that I open it. And there are times, especially in airports, when connectivity isn’t that great and logging in can be hard to do. I wish they would go back to the previous version where it preserved your credentials.
  8. [R117] Fly Delta 3/5 · GB normally good: this is a review about the app not the airline - when it works, it’s a great app and i find it really useful! but recently i have not been able to get past logging in before it immediately crashes. reinstalling the app does nothing and i’m flying in a week so i’m hoping it resolves before then.
  9. [R46] United Airlines 1/5 · US Crashes all the time: Crashes. Inconsistent. Freezes. Overall huge pain.
  10. [R54] United Airlines 1/5 · US Lately unstable: The United app used to be rock solid but within the last half year it has exhibited all sorts of unstable behaviors - e.g. locking up when checking a reservation or having a boarding ticket that was once visible completely disappear from the app never to be shown again prior to boarding the actual flight where it’s needed. This unstableness has also been displayed by the United de
  11. [R96] Fly Delta 3/5 · US Constant errors: Decent airline, mediocre app. Constantly glitches, errors when booking, never works with VPN, doesn’t let you easily toggle back and forth between search results and flight details (requires starting a new search), ecredits and vouchers often not showing up due to glitches, API errors, slow and buggy, MQD counter not updated automatically. Design and UX could be decent if it just
  12. [R118] Fly Delta 1/5 · US Unusable. Disappointed with Delta!: I downloaded the mobile app because it has become literally impossible to use Delta’s website on my laptop (VPN on = the whole site bricks me out with “access denied”, VPN off = I reach the home page, but every search immediately pulls error codes and kicks me straight back to the home page). I have tried multiple times, and several days apart. The app doesn’t w
  13. [R56] United Airlines 1/5 · US United Airlines Baggage Fees Outrageous: $110 for two bags (not oversized) is ridiculous.
  14. [R48] United Airlines 1/5 · US Unjustified cancellation: Cancelled flight, stated weather issues, but great weather, no domino effect since same plane used back/forth without delay. They initially tried to rebook 5 days later until complained to get booked next day flight. They will do everytbing they can do squeeze money. So sad only handful of large airline companies in US, no competition or desire to do well for consumer
  15. [R79] Fly Delta 1/5 · US Horrible: Bad airline waste of money completely
  16. [R119] Fly Delta 5/5 · GB Good airline: really good service great customer service and friendly manner - good price too. Thank you
  17. [R1] United Airlines 1/5 · US Poor customer service cancelled flight.: I’ve never been more frustrated than I am with United Airlines. Here’s what happened: ✈️ Seattle → Chicago: We booked without checked bags, then paid to check them at the airport. Despite paying extra, we were assigned some of the worst seats on the plane, the row directly in front of the exit row. No reclining seats and noticeably less legroom than standa
  18. [R4] United Airlines 1/5 · US Flights constantly delayed: Read the title
  19. [R61] Fly Delta 1/5 · US Login isn’t working: I have several hours before my flight and I can’t login. Not in app or on website. Customer support is dead silent. Nice…

Synthesized from 120 recent App Store reviews · updated July 2026 · View on the App Store