Delta Airlines

Mobile App Redesign

Mobile App


Role

UX Research
UI Design

Work

Native iOS UI design
Design system update
App refresh
Competitive industry analysis

Key Product Takeaways

  • Mobile-first design optimized for speed, clarity, and on-the-go use

  • Streamlined booking flow

  • Simplified search with intuitive filters and flexible date options

  • Clarified pricing breakdowns – upfront fare, baggage, and seat details

  • Smarter task flows, includes check-in, seat selection, and flight changes

  • Improved accessibility, WCAG compliant updates

  • More personalized experience, “today” itinerary, traveler, and loyalty integration.

Product Summary

The Problem

  • Booking tasks are overly complex, requiring too many steps.

  • Key travel information is difficult to find or buried within the flow.

  • The learning curve for new users is steep, impacting usability and conversion.

  • Significant accessibility and contrast issues hinder inclusive access.

UX Considerations

  • Must support simple and intuitive search, including auto-suggestions for airports.

  • Mobile first approach for optimized booking flow should minimizing friction and reducing steps.

  • Pricing transparency is important to customers.

Outcomes

  • Simplified task flows, particularly for flight search and booking.

  • Improved information hierarchy, making key details more visible and digestible.

  • Modernized interface design, aligning with user expectations.

  • Accessibility update, delivers an inclusive and user-friendly experience.

Some UI screenshots!

Ways we learned

Generative / Evaluative

  • 1:1 interviews

  • Public sentiment analysis

  • Heuristic/WCAG analysis

  • Competitive analysis

Group Feedback

  • Prototype demos

  • Polling

  • 1:1 testing

Synthesis

  • Personas

  • Flow mapping

  • Pain point mapping

  • Prioritized user wants / needs

Sketching

Though many user flows, interaction approaches, and overall layouts were explored, these sketches represent the direction final designs ultimately followed.