UAL521: 2 legs

UAL521, ATL to IAH, departing 4:17 PM EDT, Apr 11

Turbulence forecast map for UAL521, ATL to IAH

Report an issue

(Forecast data last collected at 5:00 AM EDT on Apr 11, 2026.)

Preliminary forecast. Check back within an hour or two of takeoff to see the most accurate route map and turbulence forecast for this flight.

  1. Takeoff from ATL at 4:17 PM EDT, Apr 11.
  2. 4:18 PM EDT: Light turbulence likely for the next 4 minutes.
  3. 4:22 PM EDT: Calm skies for the next 50 minutes.
  4. 5:12 PM EDT: Light turbulence likely for the next 4 minutes.
  5. 5:16 PM EDT: Calm skies for the next 28 minutes.
  6. 5:44 PM EDT: Light turbulence likely for the next 5 minutes.
  7. 5:49 PM EDT: Calm skies for the next 21 minutes.
  8. 6:10 PM EDT: Light turbulence likely until you land.
  9. Landing at IAH at 6:19 PM EDT.
Nelly

Nelly says: Bumpy skies can be scary, but they're not dangerous!

See our turbulence safety page for more information, including links to other resources for nervous fliers.

UAL521, IAH to BOS, departing 7:03 PM CDT, Apr 11

Turbulence forecast map for UAL521, IAH to BOS

Report an issue

(Forecast data last collected at 5:00 AM EDT on Apr 11, 2026.)

Preliminary forecast. Check back within an hour or two of takeoff to see the most accurate route map and turbulence forecast for this flight.

  1. Takeoff from IAH at 7:03 PM CDT, Apr 11.
  2. 7:04 PM CDT: Calm skies for the next 1 minute.
  3. 7:05 PM CDT: Light turbulence likely for the next 2 minutes.
  4. 7:07 PM CDT: Calm skies for the next 19 minutes.
  5. 7:26 PM CDT: Light turbulence likely for the next 42 minutes.
  6. 8:08 PM CDT: Calm skies for the next 46 minutes.
  7. 8:54 PM CDT: Light turbulence likely for the next 2 minutes.
  8. 8:56 PM CDT: Calm skies for the next 1 hour and 16 minutes.
  9. 10:12 PM CDT: Light turbulence likely until you land.
  10. Landing at BOS at 10:36 PM CDT.
Nelly

Nelly says: Bumpy skies can be scary, but they're not dangerous!

See our turbulence safety page for more information, including links to other resources for nervous fliers.

📣 To stay informed about updates to BumpySkies, subscribe to the free newsletter:

You can also browse past newsletter issues.

BumpySkies is a free service that depends on your donations to stay online.

If you find this service helpful, please consider supporting BumpySkies on Patreon.

For best results, try it shortly before departure.

(Or, see a random upcoming flight's forecast.)