Flight Permits

Overflight, Landing and PPR Support
flight permits

What Are Flight Permits?

Flight permits are the formal authorisations required for an aircraft to operate in or through a foreign country's airspace. Without the correct permits in place before departure, an aircraft can be denied entry to controlled airspace, held on the ground, or subject to regulatory penalties.

Permit requirements vary significantly by country — some jurisdictions process clearances within hours, while others require 5–7 working days and extensive documentation. Requirements also vary by operation type (scheduled vs non-scheduled), aircraft nationality, and airport. ASM's permits team manages this complexity on behalf of operators, tracking requirements country by country and operation by operation.

Types of Permits ASM Coordinates

Overflight Permits

An overflight permit authorises an aircraft to transit through a country's airspace without landing. Required for every international flight that crosses a foreign country's Flight Information Region (FIR). Lead times range from a few hours (e.g. some European FIRs) to 5–7 working days (e.g. certain Asian and African jurisdictions). Block overflight permits cover multiple flights over a set period for operators with regular routing.

Landing Permits

A landing permit authorises a specific aircraft to land at a foreign airport. Requirements vary by aircraft nationality, operation type (scheduled, non-scheduled, cargo, charter, private), and destination airport. Most non-scheduled and charter operations require individual landing permit applications. ASM manages documentation preparation, submission, and follow-up.

PPR — Prior Permission Required

Certain airports worldwide require PPR — Prior Permission Required — before any aircraft can land, regardless of the operator's permit status. PPR is distinct from a landing permit: it is an airport-level requirement that must be coordinated directly with the airport authority. ASM coordinates PPR as part of the wider permit process.

Block Permits

Block permits cover a series of flights into the same country under a single authorisation — useful for operators running seasonal programmes, ACMI deployments, or regular routing. Block permits reduce per-flight administrative burden and are typically more cost-effective than individual applications for high-frequency operations.

Short-Notice Clearances

When operational plans change at short notice, ASM's 24/7 permits team works to expedite clearance requests where authority processing timelines permit. ASM will always be transparent about what is achievable within a given timeframe.


Woman using tablet near airplane window

Typical Lead Times by Region

  • Europe (most FIRs): 24–48 hours for overflight; variable for landing
  • Middle East: 24–72 hours for most jurisdictions; Saudi Arabia (GACA) requires longer for Hajj season
  • Asia-Pacific: 48–96 hours typical; some jurisdictions require 5–7 working days
  • Africa: highly variable — 24 hours to 7+ working days depending on country
  • Americas: generally 24–48 hours for most jurisdictions

Lead times are indicative. ASM confirms country-specific requirements at the outset of each request.

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flight permits

What You Need To Know - Flight Permits