Going to altitude or flying after diving recommendations

Flying or going to high altitude after scuba diving can increase your risk of decompression sickness (DCS) due to changes in pressure. Here are the standard recommendations from Divers Alert Network (DAN) and PADI (Professional Association of Diving Instructors):

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General Recommendations:

After Single No-Decompression Dives:

• Wait at least 12 hours before flying or ascending to high altitude (>2,400 meters or 8,000 feet).

After Multiple Dives or Multiple Days of Diving:

• Wait at least 18 hours before flying or going to altitude.

After Decompression Dives:

• Wait significantly longer — at least 24 hours or more (consult a dive physician or DAN for specifics).

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Why the Wait Is Necessary:

• During a dive, nitrogen dissolves into your body tissues.

• After surfacing, your body slowly eliminates this nitrogen.

• Flying or driving to altitude reduces atmospheric pressure, which can cause nitrogen to form bubbles in your body (leading to DCS, or "the bends").

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Other Tips:

• Stay well-hydrated.

• Avoid alcohol before and after diving.

• Be honest about your dive profile and conservative with your surface intervals.