Routr is a flight search interface built on the Duffel API that lets you search across multiple origin and destination airports simultaneously — something most flight search engines don't support. Filter by layover duration, number of stops, cabin class, and airlines. Browse a full price calendar to shift dates by a day and save hundreds.
- Multi-airport search — search from/to multiple airports in one query (e.g. BCN + MAD → KUL + SIN)
- Advanced filters — layover duration, overnight stops, number of stops, airlines, cabin class
- Price calendar — browse prices across an entire month at a glance
- Open-jaw routing — fly into one city, return from another
- Redis caching — Upstash Redis caches API responses to reduce latency and API cost
- One-way, round-trip, multi-city — all three search modes supported
| Layer | Technology |
|---|---|
| Framework | Next.js (App Router) |
| Language | TypeScript |
| Flight data | Duffel API |
| Caching | Upstash Redis |
| Hosting | Vercel |
npm install
cp .env.example .env.local
# Fill in: DUFFEL_API_KEY, UPSTASH_REDIS_REST_URL, UPSTASH_REDIS_REST_TOKEN
npm run devOpen http://localhost:3000.
DUFFEL_API_KEY=
UPSTASH_REDIS_REST_URL=
UPSTASH_REDIS_REST_TOKEN=