Safely plan your last day of diving. Calculate the mandatory surface interval required before your flight home based on industry-standard DAN guidelines.
Disclaimer
This tool is for informational purposes only and does not constitute medical advice. DCS risk varies by individual. Always follow conservative diving practices and consult your training agency or a dive physician.
No-Fly Optimizer
How long should I wait to fly after a single no-decompression dive?
According to DAN guidelines, wait a minimum of 12 hours after a single no-decompression dive before flying.
What is the 18-hour rule for repetitive dives?
If you have performed more than one dive in a single day, or dived over several consecutive days, wait a minimum of 18 hours before flying.
How long must I wait after a decompression dive?
For dives requiring mandatory decompression stops, wait at least 24 hours before flying.
Why is it dangerous to fly shortly after diving?
Diving causes nitrogen to accumulate in your tissues. Aircraft cabins are pressurized to 6,000–8,000 feet, which can cause nitrogen to form bubbles in your bloodstream, leading to Decompression Sickness (DCS).
Is it safe to dive immediately after flying?
Generally yes. “Fly-then-dive” is not a DCS risk since you have no residual nitrogen while in the air.
Does high altitude (mountains) count the same as flying?
Yes, any significant altitude increase (above 300m/1000ft) poses the same DCS risk as flying.
What should I do if I feel DCS symptoms after flying?
Seek immediate medical attention. Contact emergency services or DAN. Early hyperbaric treatment is critical.