Last reviewed: October 2026 · Flight Permit Guides
Short answer
An overflight permit is valid only for the flight it approves. That means the stated aircraft, route, entry and exit points and date. Many authorities allow a short time window around the planned entry time. The window differs by country, so read it on each permit. If the flight falls outside it, you usually need a revision.
What a permit is tied to
- Aircraft: the registration on the permit
- Operator and call sign
- Route: entry and exit points of the country’s airspace
- Date and time: the planned entry, plus any allowed window
- Purpose: private, charter, cargo or other
Changes that usually need a revision
- A delay that moves entry outside the allowed window
- A new entry or exit point
- A different aircraft
- Adding a landing in that country. An overflight permit does not cover landing.
- A change in flight purpose
Block permits for repeat flights
Some countries offer block permits that cover several flights over a set period. They suit repeat routes. Conditions and availability vary. Read ad hoc vs block permits in Africa.
Multi-country routes
On a long route, one delay can push several permits out of their windows. Track every permit’s window, not just the first. Send revised times to all affected countries at once. See the multi-country flight planning guide.
How to avoid permit problems
- Read the window on each permit when it arrives
- Carry permit numbers on board and in the flight plan remarks if required
- Report delays early, not at the border
- Use one coordinator for the whole route
Read why flight permit delays happen in Africa. AAES handles revisions 24/7 through our overflight permit service.
FAQs: overflight permit validity
How long is an overflight permit valid?
For the approved flight only, often with a short time window around the planned entry. The window varies by country.
What happens if my flight is delayed?
If entry falls outside the allowed window, you usually need a permit revision before entering the airspace.
Can I use an overflight permit to land?
No. A landing needs a landing permit.
Does a new aircraft need a new permit?
Usually yes. The permit is tied to the registration.
Is there a permit for repeat overflights?
Some countries offer block permits for several flights over a set period.
Need 24/7 flight support in Kenya or across Africa?
AAES supports permits, flight planning, dispatch, Jet A-1 fuel coordination, ground handling, cargo support and concierge services.
Email: sales@aaes.aero
Phone: +254 725 284 509