Open Air Traffic Data for Research.
×1000 MODE-S messages collected so far:
# tracked a/c MODE-S:
# MODE-S Messages / s:
# of seen aircraft:
FLARM messages collected so far:
# tracked a/c FLARM:
# FLARM Messages / s:

OpenSky Symposium: Call for Papers

Update: Due to the Covid-19 situation, the Symposium will go fully virtual and attendance will be possible at no cost. The programe will be available soon, we are excited to come together with all of our community and beyond!

We are happy to announce the 8th OpenSky Symposium! Our yearly event has finally graduated from being a "workshop" and we will be joining Eurocontrol in Brussels on 12/13 November. We are looking forward to exciting discussions around all things aircraft data and air traffic management. Find the detailed information on our OpenSky Symposium website!


Win Prizes in the Aircraft Localization Competition

The Aircraft Localization Competition is back!
Update: Round 2 is live! Compete on real-world OpenSky data and show your localization skills until October 30!

We have teamed up with the AICrowd data science platform to bring aircraft localization research to the next level. You can take part and win a trip to our next OpenSky Symposium! Check out all information at AI Crowd: Aircraft Localization Competition and bring your submissions from June 15.

COVID-19 Dataset

Update: Update for August is out now!
While we are sad to be tracking much fewer aircraft these days, we have created a much requested research dataset for all flights that we have tracked in 2019 and 2020 so far. You can find more information here and the dataset here.

Relatedly, you can check out the Bank of England using OpenSky data to nowcast economic indicators in the COVID-19 crisis.

OpenSky and ATCO2 Project

We are excited to and proud to be part of a project called “AuTomatic COllection and processing of voice data from Air-Traffic Communications” (ATCO2), a project funded by European Commission under Horizon2020 framework.

ATCO2 project aims at developing automatic ATC voice data transcription system. The outcome of the project can potentially be used to make aviation safer and more efficient in so many ways.

The good news is that you, too, can participate in the project! We are looking for people to annotate and check the quality of automatically transcribed voice data.

If interested, contact us be sending e-mail to This email address is being protected from spambots. You need JavaScript enabled to view it. for further details. More info can be found from our forum and project website

Join the OpenSky Network Team!

Long story short – there is so much going on around OpenSky Network, that we are in desperate need of highly motivated Software Engineers. 

There are paid full-time posts available, ideally to be in Zurich, Switzerland or Tallinn, Estonia (with remote locations also possible.)  

More info about the role in our forum or This email address is being protected from spambots. You need JavaScript enabled to view it.

About the OpenSky Network

The OpenSky Network is a non-profit community-based receiver network which has been continuously collecting air traffic surveillance data since 2013. Unlike other networks, OpenSky keeps the complete unfiltered raw data and makes it accessible to academic and institutional researchers. With over 20 trillion ADS-B, Mode S, TCAS and FLARM messages collected from more than 3000 sensors around the world, the OpenSky Network exhibits the largest air traffic surveillance dataset of its kind. The mission of our non-profit association is to support open global air traffic research by universities and other not-for-profit institutions.

Aircraft Database

Find and track aircraft with our comprehensive database. You can also add and update information!

Enter »

Unfiltered live API

Our live API comes with Java and Python bindings, but it can be used with any language that supports JSON-based REST APIs.

Read more »

OpenSky Explorer

Browse through historical air traffic with our OpenSky Explorer.

OpenSky Explorer »

Air Traffic Statistics

See up-to-date statistics on air traffic and our network on our Network Facts page.

See Statistics »



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