Transport for Finland API

⭐ Beginner's Pick Transportation / No Auth Required Beginner HTTPS
Free to Use Varies (check documentation)

Overview

Digitransit is Finland's national open public transport platform, offering a GraphQL API for routing, stop information, and real-time data across Finnish cities. No API key is required, and the GraphQL interface lets you request exactly the data you need. It is a great modern API for learning GraphQL while working with real transit data.

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Beginner Tip

This API uses GraphQL instead of REST — you send POST requests with a query body to the endpoint. Use the GraphQL playground at api.digitransit.fi/graphiql to explore and test queries interactively before writing code.

Available Data

match scores and results
team standings
player statistics
schedule and fixtures
Use case: Integrate finnish transport api data into web and mobile applications

Example Response

JSON Response
{
  "route": "Line 1",
  "origin": "Station A",
  "destination": "Station B",
  "departure": "08:30",
  "arrival": "09:15",
  "status": "On Time",
  "delays_min": 0
}

Field Reference

data.stops List of transit stops matching your query
gtfsId GTFS-format unique identifier for the stop
name Human-readable name of the stop
lat Latitude coordinate of the stop
lon Longitude coordinate of the stop

Implementation Example

const url = "https://digitransit.fi/en/developers/";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

GraphQL errors array in response Invalid or malformed GraphQL query syntax
Use the GraphiQL playground at api.digitransit.fi to validate your query before sending it programmatically
Empty stops array The stop name searched does not match any stops in the dataset
Try a broader search term or a major city name like "Helsinki" or "Tampere" to confirm the API is working
CORS error in browser Calling the API directly from a browser without the correct headers
Include the digitransit-subscription-key header even for free tier usage, or proxy the request through your server

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 10/20
🔒 Security 15/15
🛠 Developer XP 15/20
✓ Reliability 7/15
Response Time 517ms

Fully tested on Apr 5, 2026

Technical Specifications

Auth No Auth
HTTPS REQUIRED
CORS UNKNOWN
Category Transportation
Difficulty Beginner
Verified: 2026-04-04

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