Safety
Can You Fly After Scuba Diving?
Not right away. Here are the surface-interval guidelines that keep you safe from decompression sickness.
No — you must wait before flying. The lower cabin pressure can trigger decompression sickness if you still have excess nitrogen in your body. Guidelines recommend waiting at least 12 hours after a single no-decompression dive, and 18–24 hours after multiple dives or several days of diving.
- Single dive
- Wait ≥ 12 hours
- Multiple dives/days
- Wait 18–24 hours
- Decompression dives
- Longer still
- When unsure
- Wait longer
Why you can't fly straight after diving
During a dive your body absorbs extra nitrogen. You release it gradually after surfacing. Flying too soon exposes you to reduced cabin pressure (cabins are pressurised to roughly 2,400 m / 8,000 ft of altitude), which can cause that dissolved nitrogen to form bubbles — the same mechanism as decompression sickness (DCS). Waiting lets your body off-gas safely first.
How long to wait before flying
| Your diving | Minimum wait before flying |
|---|---|
| A single no-decompression dive | At least 12 hours |
| Multiple dives in a day, or several days of diving | 18–24 hours |
| Any dive requiring decompression stops | Substantially longer than 18 hours |
These are minimums from widely used guidance (such as DAN / the dive agencies). When in doubt, wait longer — there's no downside to extra surface time, and the consequences of DCS are serious. The same caution applies to driving to high-altitude areas after diving.
Plan your last dive day around your flight
- Make your final day of diving end well before your departure — many divers keep the last day dive-free.
- Count the hours from your last dive's surface time, not from when you left the dive site.
- Stay hydrated, which supports off-gassing.
- If you feel unwell after diving — joint pain, tingling, fatigue, dizziness — don't fly and seek medical advice immediately.
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Get the Diving Standard appFrequently asked questions
How long after diving can I fly?
Wait at least 12 hours after a single no-decompression dive, and 18–24 hours after multiple dives or several days of diving. Longer after any decompression diving. When unsure, wait longer.
What happens if you fly too soon after diving?
The reduced cabin pressure can cause leftover nitrogen in your body to form bubbles, risking decompression sickness — joint pain, fatigue, tingling or more serious symptoms.
Does the rule apply to mountains and high altitude too?
Yes. Driving to high-altitude areas after diving carries the same risk as flying. Apply the same waiting guidelines before ascending to altitude.