---
title: "Kayak Flights API: JSON data, 3 endpoints, 1 credit per call"
description: "Get Kayak Flights data as structured JSON with one API key: airports, one way and round trip. Free credits every month."
url: https://perceptlayer.com/apis/kayak-flights
---

[APIs](https://perceptlayer.com/apis) / [Travel](https://perceptlayer.com/verticals/travel) / Kayak Flights

1 credit per call 3 endpoints

# Kayak Flights API

Get Kayak Flights data as structured JSON with one API key: airports, one way and round trip. Free credits every month.

[Get a free API key](https://perceptlayer.com/signup) Run it below

Kayak Flights

GET /v1/kayak-flights/airports?query=San+Francisco&locale=en-US 

```
curl "https://api.perceptlayer.com/v1/kayak-flights/airports?query=San+Francisco&locale=en-US" \
  -H "X-API-Key: $API_KEY"
```

cURL 1 credit per successful call

Run this call below or from your dashboard to see a live response.

Playground

## Run this API

cURL shell 

```
curl "https://api.perceptlayer.com/v1/kayak-flights/airports?query=San+Francisco&locale=en-US" \
  -H "X-API-Key: $API_KEY"
```

Kayak Flights · 3 endpoints

## Endpoints

Every endpoint takes the same key. Open one for its parameters and an example request.

| Endpoint | Required parameters | Cost |
| --- | --- | --- |
| [GET `/v1/kayak-flights/airports`](https://perceptlayer.com/apis/kayak-flights/airports) | `query` +1 optional | 1 credit |
| [GET `/v1/kayak-flights/one-way`](https://perceptlayer.com/apis/kayak-flights/one-way) | `origin` `destination` `departure_date` +11 optional | 1 credit |
| [GET `/v1/kayak-flights/round-trip`](https://perceptlayer.com/apis/kayak-flights/round-trip) | `origin` `destination` `departure_date` `return_date` +11 optional | 1 credit |

Overview

## About the Kayak Flights API

## What you can get

The Kayak Flights API returns airports, one way and round trip as clean JSON. Each successful call costs one credit, and calls that fail are free.

Travel JSON REST MCP

### More travel APIs

[Agoda](https://perceptlayer.com/apis/agoda) [Airbnb](https://perceptlayer.com/apis/airbnb) [Booking.com](https://perceptlayer.com/apis/booking) [Economy Car Rentals](https://perceptlayer.com/apis/economy-car-rentals) [Eventbrite](https://perceptlayer.com/apis/eventbrite) [Expedia](https://perceptlayer.com/apis/expedia) [FlixBus](https://perceptlayer.com/apis/flixbus) [GetYourGuide](https://perceptlayer.com/apis/getyourguide) [Google Flights](https://perceptlayer.com/apis/google-flights) [Google Hotels](https://perceptlayer.com/apis/google-hotels) [Google Travel Explore](https://perceptlayer.com/apis/google-travel-explore) [HolidayCheck](https://perceptlayer.com/apis/holidaycheck)

Use cases

### Monitor fares and room rates

`Use the Kayak Flights API to monitor fares and room rates` 

### Check availability across dates

`Use the Kayak Flights API to check availability across dates` 

### Build travel search and comparison tools

`Use the Kayak Flights API to build travel search and comparison tools` 

FAQ

## Questions

**How much does the Kayak Flights API cost?**

Each successful call costs one credit. New accounts get free credits every month, and credit packs bring the price down as you scale.

**What format are responses in?**

Every endpoint returns JSON, with no HTML parsing on your side.

**Do I need a separate key for Kayak Flights?**

No. One key works for every API in the catalogue.

## Try the Kayak Flights API with 1,000 free credits

No credit card. Failed calls are never billed.

[Get a free API key](https://perceptlayer.com/signup) [Read the docs](https://perceptlayer.com/docs)