United Airlines website screenshot

United Airlines

United Airlines is a major American airline headquartered in Chicago, Illinois. It operates one of the largest route networks in the world with hubs in Chicago, Denver, Houston, Los Angeles, New York, San Francisco, and Washington, D.C. United provides NDC (New Distribution Capability) APIs for flight shopping, booking, and servicing, as well as corporate travel integration capabilities.

United Airlines publishes 4 APIs on the APIs.io network, including Booking API, Servicing API, Shopping API, and 1 more. Tagged areas include Airlines, Travel, Flight Booking, NDC, and Loyalty.

The United Airlines catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

United Airlines’ developer surface includes authentication and 17 more developer resources.

🌐 Visit website 📡 Source on GitHub
45.6/100 developing ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessEnterpriseApproval
5 APIs
AirlinesTravelFlight BookingNDCLoyaltyFortune 100

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 45.6/100 · developing
Contract Quality 17.5 / 25
Developer Ergonomics 3.9 / 20
Commercial Clarity 5.8 / 20
Operational Transparency 2.7 / 13
Governance 8.3 / 12
Discoverability 7.4 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/united-airlines: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 5

Individual APIs this provider publishes, each with its own machine-readable definition.

United Airlines Flight Status API

United Airlines Flight Status API providing real-time flight status including estimated and actual departure and arrival times, gate information, delays, and flight tracking for...

United Airlines Booking API

Flight booking and reservation management

United Airlines Servicing API

Post-booking modifications, refunds, and ancillaries

United Airlines Shopping API

Flight search and pricing operations

United Airlines Status API

Flight status and schedule information

GraphQL 1

GraphQL schemas published by this provider.

United Airlines GraphQL Schema

This GraphQL schema provides a conceptual representation of the United Airlines flight and travel API domain, covering the NDC (New Distribution Capability) API, Flight Status A...

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

United Airlines Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

United Airlines Rate Limits

1 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

United Airlines Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

United Airlines Context

0 classes · 41 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

United Airlines API Rules

6 rules · 4 warnings 2 info

SPECTRAL

United Airlines API Rules

15 rules · 4 errors 9 warnings 2 info

SPECTRAL

JSON Schema 2

Standalone JSON Schema definitions for this provider's data models.

United Airlines Booking

8 properties

JSON SCHEMA

United Airlines Flight Status

14 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

United Airlines Booking Structure

0 properties

JSON STRUCTURE

Examples 3

Example request and response payloads for these APIs.

United Airlines Createbooking Example

2 fields

EXAMPLE

United Airlines Getflightstatus Example

2 fields

EXAMPLE

United Airlines Searchflightoffers Example

2 fields

EXAMPLE

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

United Airlines Authentication

oauth2 · 1 scheme

SECURITY

United Airlines Domain Security

TLSv1.3 · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

United Airlines Scopes

2 scopes · clientCredentials

2 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

United Airlines Agentic Access

11 operations · 6 acting

11 operations · 6 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 IATA Developer Portal
IATA Developer Portal

Documentation 3

Reference material describing how the API behaves

OpenAPI
OpenAPI
 JSONSchema
JSONSchema
 JSONSchema
JSONSchema

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

SpectralRules
SpectralRules
 JSONLDContext
JSONLDContext
 Vocabulary
Vocabulary

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication
 OAuthScopes
OAuthScopes

Operate 1

Status, limits, changes, and where to get help

Contact
Contact

Company 2

The organization behind the API

Website
Website
 LinkedIn
LinkedIn

Other 3

Properties that don't map to a standard resource type

NDC Capabilities
NDC Capabilities
 X
X
 MileagePlus
MileagePlus

Source (apis.yml)

apis.yml Raw ↑ 
aid: united-airlines
url: https://raw.githubusercontent.com/api-evangelist/united-airlines/refs/heads/main/apis.yml
accessModel:
  pricing: enterprise
  onboarding: approval
  trial: false
  try_now: false
  public: false
  label: Enterprise · Requires approval
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
created: '2026-03-21'
modified: '2026-05-19'
name: United Airlines
description: United Airlines is a major American airline headquartered in Chicago, Illinois. It operates one of the largest
  route networks in the world with hubs in Chicago, Denver, Houston, Los Angeles, New York, San Francisco, and Washington,
  D.C. United provides NDC (New Distribution Capability) APIs for flight shopping, booking, and servicing, as well as corporate
  travel integration capabilities.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/united-airlines.png
tags:
- Airlines
- Travel
- Flight Booking
- NDC
- Loyalty
- Fortune 100
apis:
- name: United Airlines Flight Status API
  description: United Airlines Flight Status API providing real-time flight status including estimated and actual departure
    and arrival times, gate information, delays, and flight tracking for United-operated flights.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://api.developer.iata.org/united-airlines-united-airlines-default/api/flight-status2
  baseURL: https://api.united.com/v1
  tags:
  - Airlines
  - Flight Status
  - Real-Time
  - IATA
  properties:
  - type: Documentation
    url: https://api.developer.iata.org/united-airlines-united-airlines-default/api/flight-status2
- aid: united-airlines:united-airlines-booking-api
  name: United Airlines Booking API
  description: Flight booking and reservation management
  humanURL: https://united.business/NDC-corporate
  baseURL: https://api.united.com/v1
  tags:
  - Booking
  properties:
  - type: OpenAPI
    url: openapi/united-airlines-booking-api-openapi.yml
  - type: Documentation
    url: https://united.business/NDC-corporate
  - type: NDC Capabilities
    url: https://united.business/NDC-capabilities
  - type: GraphQL
    url: graphql/united-airlines-graphql.md
- aid: united-airlines:united-airlines-servicing-api
  name: United Airlines Servicing API
  description: Post-booking modifications, refunds, and ancillaries
  humanURL: https://united.business/NDC-corporate
  baseURL: https://api.united.com/v1
  tags:
  - Servicing
  properties:
  - type: OpenAPI
    url: openapi/united-airlines-servicing-api-openapi.yml
  - type: Documentation
    url: https://united.business/NDC-corporate
  - type: NDC Capabilities
    url: https://united.business/NDC-capabilities
  - type: GraphQL
    url: graphql/united-airlines-graphql.md
- aid: united-airlines:united-airlines-shopping-api
  name: United Airlines Shopping API
  description: Flight search and pricing operations
  humanURL: https://united.business/NDC-corporate
  baseURL: https://api.united.com/v1
  tags:
  - Shopping
  properties:
  - type: OpenAPI
    url: openapi/united-airlines-shopping-api-openapi.yml
  - type: Documentation
    url: https://united.business/NDC-corporate
  - type: NDC Capabilities
    url: https://united.business/NDC-capabilities
  - type: GraphQL
    url: graphql/united-airlines-graphql.md
- aid: united-airlines:united-airlines-status-api
  name: United Airlines Status API
  description: Flight status and schedule information
  humanURL: https://united.business/NDC-corporate
  baseURL: https://api.united.com/v1
  tags:
  - Status
  properties:
  - type: OpenAPI
    url: openapi/united-airlines-status-api-openapi.yml
  - type: Documentation
    url: https://united.business/NDC-corporate
  - type: NDC Capabilities
    url: https://united.business/NDC-capabilities
  - type: GraphQL
    url: graphql/united-airlines-graphql.md
common:
- type: AgenticAccess
  url: agentic-access/united-airlines-agentic-access.yml
- type: DomainSecurity
  url: security/united-airlines-domain-security.yml
- type: Authentication
  url: authentication/united-airlines-authentication.yml
- type: OAuthScopes
  url: scopes/united-airlines-scopes.yml
- type: Website
  url: https://www.united.com
- type: DeveloperPortal
  url: https://united.business/NDC-corporate
- type: NDC Capabilities
  url: https://united.business/NDC-capabilities
- type: Contact
  url: https://united.business/contact-form.html
- type: IATA Developer Portal
  url: https://api.developer.iata.org/united-airlines-united-airlines-default/api/flight-status2
- type: LinkedIn
  url: https://www.linkedin.com/company/united-airlines
- type: X
  url: https://twitter.com/united
- type: MileagePlus
  url: https://www.united.com/en/us/fly/mileageplus.html
- type: OpenAPI
  url: https://raw.githubusercontent.com/api-evangelist/united-airlines/main/openapi/united-airlines-ndc-openapi.yml
- type: SpectralRules
  url: https://raw.githubusercontent.com/api-evangelist/united-airlines/main/rules/united-airlines-rules.yml
- type: JSONSchema
  url: https://raw.githubusercontent.com/api-evangelist/united-airlines/main/json-schema/united-airlines-booking-schema.json
- type: JSONSchema
  url: https://raw.githubusercontent.com/api-evangelist/united-airlines/main/json-schema/united-airlines-flight-status-schema.json
- type: JSONLDContext
  url: https://raw.githubusercontent.com/api-evangelist/united-airlines/main/json-ld/united-airlines-context.jsonld
- type: Vocabulary
  url: https://raw.githubusercontent.com/api-evangelist/united-airlines/main/vocabulary/united-airlines-vocabulary.yml
maintainers:
- FN: API Evangelist
  email: info@apievangelist.com