One of the most critical safety topics for any diver is the transition from the depths of the ocean to the cabin of an airplane. While we all want to maximize our time underwater, understanding the relationship between nitrogen and altitude is essential for a safe trip home.
Here is a quick guide on the do’s and don’ts of flying after diving.
The Do’s
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Do Follow the 12-24 Hour Rule:
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Single Dive: Wait a minimum of 12 hours before flying.
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Multiple Dives/Multiple Days: Wait at least 18 to 24 hours. When in doubt, the 24-hour mark is the industry "gold standard" for safety.
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Do Check Your Dive Computer: Most modern computers have a "No Fly" timer. This countdown is based on your actual depth and bottom time; respect it as a primary safety tool.
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Do Plan a "Dry Day": Schedule your last day of vacation for sightseeing on land, shopping, or relaxing by the pool. This ensures you have a massive safety buffer before your flight.
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Do Stay Hydrated: Dehydration can be a contributing factor to Decompression Sickness (DCS). Drink plenty of water during your surface interval and before your flight.
The Don’ts
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Don’t Push the Limits: Even if your dive profile was conservative, don't try to "squeeze in" one last shallow dive on the morning of your flight.
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Don’t Forget About High Altitude Driving: If your route home involves driving over high mountain passes (altitudes above 1,000 feet), the same rules for flying apply. The drop in atmospheric pressure can trigger DCS just like a plane ride.
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Don’t Ignore Symptoms: If you feel unusual joint pain, tingling, or extreme fatigue after a dive—even if you haven't flown yet—do not board a plane. Flying will only exacerbate the symptoms of "the bends."
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Don’t Rely Solely on Minimums: If you were doing deco dives or pushing your no-decompression limits, be extra conservative. Your body needs time to off-gas that extra nitrogen.
Safe diving is all about preparation. By giving your body the time it needs to reset, you ensure that your dive memories are the only thing you’re bringing back from your trip.
Ready for your next adventure? Check out our upcoming course schedule and get back in the water!