ATC online at your airports

Watch the video: Flying on VATSIM or IVAO

Vaeroly shows which air traffic controllers are online on VATSIM and IVAO at a flight's departure and arrival, so you can pick a flight with ATC at either end.

On the flight list

Open Book a flight → Flight list.
Under a flight's route, a small tag such as EGLL TWR APP shows the controllers online at that airport now: delivery (DEL), ground (GND), tower (TWR), approach (APP), departure (DEP), and the centre (CTR) whose airspace covers the airport. ATIS K is the airport's current ATIS letter. Hold the pointer over the tag to see each station and its frequency.
Tick ATC at either end and press Search to list only flights with a controller online at the departure or the arrival.

On the dispatch page

When you open a flight to book it, ATC online now lists each station at the departure and arrival with its frequency, for each network.

Below it, ATC booked on VATSIM around your times shows the controllers who booked a slot on VATSIM at the departure or the arrival within an hour of your planned times, for example EGLL_TWR 18:00–20:00z. Bookings are plans, so a controller can still not show up.

Good to know

The networks' public data is read about once a minute, so a controller who just logged on can take a minute to show.
When VATSIM and IVAO can't be read, no tags show. With ATC at either end ticked, every flight is listed and the page says so.
A controller online now may be gone by the time you fly. Check the network's own map before you depart.