US Aviation Data. Developer-Ready.
Airports, runways, frequencies, NAVAIDs, airspace, NOTAMs, obstacles, and more — all with one API key. Your aviation data infrastructure, already built.
Built by a pilot and software engineer. All data sourced from the FAA and AWC.
5,000 calls/month free. No credit card required.
█Where the data comes from
Official FAA & Aviation Weather Center Sources
We ingest, normalize, and serve data from the authoritative sources pilots and developers trust.
FAA NASR
National Airspace System Resources — airports, runways, frequencies, navaids, and more.
FAA DOF
Digital Obstacle File — 625,000+ towers, antennas, and other obstructions with precise coordinates.
FAA ADDS
Aeronautical Data Delivery System — Class B, C, D and special use airspace boundaries.
FAA NMS
NOTAM Management System — active Notices to Air Missions for all US facilities.
Aviation Weather Center
METARs, TAFs, PIREPs, SIGMETs, G-AIRMETs, and winds aloft from aviationweather.gov.
FAA d-TPPs
Digital Terminal Procedures Publication — IAP, DP, STAR, airport diagrams, and more.
FAA d-CS
Digital Chart Supplements — airport facility directories with detailed information for every US airport.
And more on the way
What you'd have to build
What you write with PreflightAPI
const airport = await fetch(
`https://api.preflightapi.io/api/v1/airports/KJFK`,
{ headers: { 'Ocp-Apim-Subscription-Key': key } },
).then(r => r.json())We built the infrastructure. You build the product.
Getting started
Up and running in minutes
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Create a free account in seconds. No credit card required.
Get Your API Key
Your key is generated instantly. Copy it from your dashboard.
Start Building
Make your first API call. 40+ endpoints, one subscription key.
What we offer
Real-Time Weather
METARs, TAFs, PIREPs, SIGMETs, G-AIRMETs, and winds aloft. Sourced from aviationweather.gov.
19,600+ US Airports
Sourced from the FAA NASR subscription. Runways, frequencies, NAVAIDs, terminal procedures, chart supplements. Updated every 28 days.
Airspace Boundaries
Class B, C, D and special use airspace with full geospatial boundaries and coordinates. From the FAA Aeronautical Data Delivery System. Updated every 56 days.
NOTAMs
Straight from the FAA NOTAM Management System. Don't worry about applying for access, we've already done it for you.
VFR Navigation Logs
Nav log generation with waypoints, winds aloft, magnetic variation, and fuel burn. Plus bearing/distance and coordinate conversions.
E6B Calculator Utilities
Crosswind, density altitude, wind triangle, true airspeed, cloud base, pressure altitude. Your E6B as an API.
Live demo
See what you can build
Real API responses, live. From airport lookups to wind-corrected flight plans — all from a single API key.
Select an airport above to explore live API data
GET /airports/{icao}GET /metars/{icao}GET /runways/airport/{icao}GET /communication-frequencies/{facilityId}Why PreflightAPI?
Your aviation data infrastructure, already built.
Save time and money so you can build your next generation aviation product.
Read the full story →One API key, all the FAA data you need
Weather, airports, NAVAIDs, airspace, NOTAMs, obstacles, charts — all behind a single API key.
Data stays current automatically
Real-time weather information, NOTAM updates every 3 minutes, airport and airspace data syncs every FAA publication cycle. You never think about it.
Get building in minutes
Sign up, get a key, start building in minutes.
Simple, Transparent Pricing
Start free and scale as your application grows. No hidden fees.
Commercial Pilot
- Everything in Private Pilot
- Search NOTAMs from FAA NOTAM management system by airport, radius, route or general search
- Generate route weather briefing with full METARs, TAFs, PIREPs, SIGMETs, G-AIRMETs & NOTAMs
- E6B utilities
- VFR navigation log generation with wind correction and fuel burn calculations
- Bearing & distance calculations between geographic coordinates
- Winds aloft forecasts (6/12/24 hr) from aviationweather.gov
- Full FAA NAVAID database (VOR, VORTAC, NDB, DME, TACAN)
- FAA terminal procedure charts (IAP, DP, STAR, airport diagrams)
- Official FAA chart supplement (A/FD) PDFs
- Always up-to-date with the latest FAA data
- Priority support
- Up to 750,000 API calls/month
- 300 requests/minute
- ~$0.000067/request at full usage
PreflightAPI sources its data from official providers such as the FAA and AWC, but this service itself has not been approved and they do not endorse the accuracy or completeness of the data. This service is not a substitute for official aviation information sources. It is designed for supplemental pre-flight planning and application development purposes only.
Developers integrating this API should ensure their end users understand that the information is supplemental in nature. Pilots and operators should continue to obtain official briefings from FAA-approved sources such as 1800wxbrief.com, the FAA NOTAM Search, and certified flight planning tools before any flight.
Use of this data for in-flight purposes is entirely at the user's own risk. PreflightAPI assumes no responsibility or liability for any decisions made or actions taken based on the information provided.