SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/scuba-fly-after-single-dive

After a single no-decompression dive, DAN recommends waiting at least how long before flying?

12 hours.

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  1. 2 hours
  2. 6 hours
  3. 12 hours ✔

Why: An airplane cabin has lower pressure than the ground, like ascending further. Waiting lets leftover nitrogen leave your body first.

Huh, didn't know that: Airliner cabins are usually pressurized like being 6,000 to 8,000 feet up a mountain.

The dad joke
I planned my vacation perfectly. Dive in the morning, fly next day. My nitrogen needed a layover.
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References

Answer: 12 hours. An airplane cabin has lower pressure than the ground, like ascending further. Waiting lets leftover nitrogen leave your body first.

  1. DAN: Flying After Diving dan.org/health-medicine/health-resources/diseases-conditions/flying-after-diving
    For a single no-decompression dive, the recommendation is a minimum preflight surface interval of 12 hours.
    Checked 2026-10-12.

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