Make a Travel Site App with Flutter

What This App Does

A Travel Site app serves a specific need in today's mobile-first world. Building one with Flutter means you ship to iOS, Android, and the web from a single codebase, cutting development time dramatically while keeping a native-quality experience.

Main Features

Feature	Why It Matters
Destination Explorer	Image-heavy grid with country/category filters and wishlist save
Itinerary Builder	Day-by-day plan with drag-reorderable activities and time estimates
Budget Tracker	Per-trip expense log broken into flights, accommodation, food, activities

How to Make a Travel Site App with Flutter

Itinerary Builder

class DayPlan {
  int day;
  List activities;

  DayPlan({required this.day, this.activities = const []});
}

class Activity {
  String title, location, notes;
  TimeOfDay startTime;
  double estimatedDurationHours;
  double cost;

  Activity({required this.title, required this.location, this.notes = '',
    required this.startTime, this.estimatedDurationHours = 1, this.cost = 0});
}

class ItineraryWidget extends StatefulWidget {
  final List plans;
  const ItineraryWidget({super.key, required this.plans});
  @override State createState() => _ItineraryWidgetState();
}

class _ItineraryWidgetState extends State {
  late List _plans;

  @override
  void initState() {
    super.initState();
    _plans = List.from(widget.plans);
  }

  void _addActivity(int dayIndex) {
    showModalBottomSheet(
      context: context,
      builder: (ctx) => Padding(
        padding: const EdgeInsets.all(16),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            TextField(decoration: const InputDecoration(labelText: 'Activity')),
            TextField(decoration: const InputDecoration(labelText: 'Location')),
            const SizedBox(height: 12),
            ElevatedButton(
              onPressed: () => Navigator.pop(ctx),
              child: const Text('Add'),
            ),
          ],
        ),
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    return ListView.builder(
      itemCount: _plans.length,
      itemBuilder: (ctx, i) {
        final day = _plans[i];
        return ExpansionTile(
          title: Text('Day \${day.day} · \${day.activities.length} activities'),
          children: [
            ...day.activities.map((a) => ListTile(
              leading: Icon(Icons.location_on, color: Colors.red.shade300),
              title: Text(a.title),
              subtitle: Text('\${a.location}  ·  \${a.startTime.format(context)}'),
              trailing: Text('\$\${a.cost.toStringAsFixed(0)}'),
            )),
            ListTile(
              leading: const Icon(Icons.add_circle_outline),
              title: const Text('Add Activity'),
              onTap: () => _addActivity(i),
            ),
          ],
        );
      },
    );
  }
}

Recommended Libraries

Package	Purpose
google_maps_flutter	Map views, geocoding, and place markers
isar	Offline-first storage for itineraries and expenses

UI & UX Suggestions

Use a warm sunset colours (#FF6B35 primary), white cards, blue map markers colour palette to match the app's purpose. Keep the navigation simple — a bottom nav bar or a single-scroll layout works best for this type of app. Make sure every interaction provides haptic or visual feedback so the app feels responsive and polished.