DAL21, LHR to SEA, departing 5:50 PM BST, Jun 12

Turbulence forecast map for DAL21, LHR to SEA

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(Forecast data last collected at 3:00 PM BST on Jun 12, 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 LHR at 5:50 PM BST, Jun 12.
  2. 5:51 PM BST: Light turbulence likely for the next 19 minutes.
  3. 6:10 PM BST: Calm skies for the next 1 hour and 21 minutes.
  4. 7:31 PM BST: Light turbulence likely for the next 35 minutes.
  5. 8:06 PM BST: Calm skies for the next 1 hour and 19 minutes.
  6. 9:25 PM BST: Light turbulence likely for the next 4 minutes.
  7. 9:29 PM BST: Calm skies for the next 1 hour and 36 minutes.
  8. 11:05 PM BST: Light turbulence likely for the next 1 minute.
  9. 11:06 PM BST: Calm skies for the next 16 minutes.
  10. 11:22 PM BST: Light turbulence likely for the next 49 minutes.
  11. 12:11 AM BST: Calm skies for the next 2 hours and 2 minutes.
  12. 2:13 AM BST: Light turbulence likely for the next 55 minutes.
  13. 3:08 AM BST: Calm skies for the rest of the flight.
  14. Landing at SEA at 3:15 AM BST.
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.

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