Flight Ticket Booking System Android App with Fare Alerts and Live Flight Status

Flight Ticket Booking System Android App with Fare Alerts and Live Flight Status is an Android app built in Kotlin that lets a traveller search flights, compare fares across airlines on one screen, set a target price and be notified when the fare drops, and follow a booked flight from departure gate to baggage belt. Travellers today juggle three separate tools — a booking site, a price tracker and an airline app — and re-checking fares by hand means the cheapest fare is often missed by hours. This app brings the three jobs into one flow: one search returns fares from four sample airlines, a scheduled background check compares the current fare with each saved target price, and the status screen turns gate, delay and arrival updates into a simple timeline. The demo ships with 24 sample flights across 6 Indian domestic routes and a 36-seat seat map, so every screen works without a live airline account.

A booking starts as a search and ends as a timeline, with a background scheduler doing the waiting in between. The user enters a route, date and traveller count; the app asks the fare source for each airline through Retrofit and renders the results sorted by fare, cheapest first, with the day-on-day change beside every price. When the user saves an alert, the rule — route, date, target fare and check frequency — is stored in the Room database, and WorkManager runs the re-check on a schedule; periodic work has a 15-minute minimum interval, so the fastest re-check the platform allows is every 15 minutes. If a re-checked fare meets the target, a notification is raised and the price history is updated. Tapping a flight opens the seat map, the selected seat is saved with the booking, and the status screen then polls the flight-status feed and renders check-in, departure, en-route and arrival stages in order.

1. The user enters the route, travel date and traveller count on the Search screen and submits the query.
2. Retrofit calls the fare source for each airline and the responses are parsed into Kotlin data classes with Gson.
3. Results are sorted by fare and rendered side by side, with the cheapest option highlighted and the change since yesterday shown per flight.
4. The user taps a flight, picks a free seat on the 36-seat map, and the booking is saved to the Room database with its PNR.
5. A fare alert is created by saving a route, date, target fare and check frequency; WorkManager re-checks the fare on that schedule (15-minute minimum interval).
6. When a re-checked fare falls to or below the target, the app raises a notification and updates the route's price history.
7. On travel day, the status screen polls the flight-status feed and renders the four-stage timeline: check-in, departed, en route, arriving with gate and baggage belt.
8. Bookings stay stored on-device, so the My Bookings screen works offline; only the status refresh needs an internet connection.

Tech stack:

• Kotlin
• Android SDK · Jetpack
• Retrofit · OkHttp
• Room Database
• WorkManager
• Material Design 3
• Gradle
• Git

Flight booking, fare alerts and live status are three different jobs, and this app treats each as a first-class capability rather than an afterthought. Fare comparison is the starting point: one search returns fares from four sample airlines side by side, sorted by price, with the cheapest highlighted and the day-on-day change shown per flight. Fare alerts are the second pillar: the traveller sets a target price per route and the app re-checks on a schedule, notifying only when the fare falls to or below that target. Live flight status is the third: a four-stage timeline turns check-in, departure, en-route and arrival updates into one readable screen with gate and baggage details. The interactive seat map and offline bookings complete the journey, so the app stays useful from the first search to the baggage belt.

• [Multi-airline fare comparison] One search returns fares from four sample airlines side by side, sorted by price, with the cheapest option highlighted and the change since yesterday shown for each flight.
• [Fare alerts with target price] Set a target fare per route and date; the app re-checks on a schedule and notifies you only when the fare falls to or below your target.
• [Live flight status timeline] Check-in, departure, en-route progress and arrival are shown as a four-stage timeline with gate number, terminal and baggage belt.
• [Interactive seat map] A 6-row by 6-column seat map (36 seats) marks occupied seats and lets you tap a free seat to select it; the choice is saved against the booking.
• [Offline bookings] Confirmed, upcoming and completed bookings are stored on-device with Room, so tickets and booking history stay readable without internet.
• [Price-drop history per route] Each alert shows a small fare history, so you can see whether the current fare is genuinely low or just back to its usual level.
• [Saved searches and recent routes] Frequently searched routes are kept on-device, so a repeat search starts with one tap instead of retyping the route.

• Complete Android app source code in Kotlin (Android Studio project)
• Working demo app with the 24-flight sample dataset across 6 Indian domestic routes
• Fare-alert engine with WorkManager scheduling and notification code
• Interactive seat-map module and offline bookings with Room
• Project report PDF (background, architecture, methodology, results)
• PPT presentation for final review
• Viva Q&A preparation document (Retrofit, Room, WorkManager, Material Design, app architecture)