Flight Plan Filing (VFR/IFR)

Updated at: 2025-12-01 11:22
Filing a flight plan, whether VFR or IFR, follows a surprisingly similar pattern worldwide: gather your data, plan the route, complete the standard fields, submit to the appropriate authority, and make sure the plan is activated and closed correctly. This guide walks you through those common steps in a country neutral, aerodrome neutral way.<\/b>
Flight Plan Filing (VFR/IFR) Why flight plans matter for VFR and IFR Step 1: Preflight information gathering Check weather and NOTAMs Confirm aircraft status and performance Define your operational constraints Step 2: Route planning for VFR and IFR VFR route planning basics IFR route planning basics Choosing levels and altitudes Step 3: Fuel, time, and performance calculations Step 4: Understand the standard flight plan form Core identification and flight rules fields Route and timing fields Other information and survival details Step 5: Submitting the flight plan Where and how to file Timing considerations Step 6: Activating and amending the flight plan Activating the flight plan Amending or delaying the flight Step 7: Arrival, closing, and search and rescue Closing the flight plan Search and rescue implications VFR vs IFR: what actually changes in the process? Practical tips for universally good flight plan habits

Why flight plans matter for VFR and IFR

Flight plans are more than paperwork. They are a structured way to tell air traffic services (ATS) who you are, where you are going, how you intend to get there, and what support you might need. For IFR flights, a flight plan is almost always mandatory. For VFR flights, it is often optional but strongly recommended when crossing borders, flying over water, or operating in remote or mountainous areas.
In simple terms, a flight plan is your contract with the system: it helps controllers sequence traffic, search and rescue (SAR) units know where to look if you are overdue, and aerodromes prepare for your arrival. Despite local differences in forms and tools, the core information and the logical steps are very similar worldwide.

Step 1: Preflight information gathering

Before touching any flight plan form or electronic system, collect the information you need to make sound decisions. This is a legal and practical requirement for both VFR and IFR operations.

Check weather and NOTAMs

You should obtain and review meteorological information for departure, en‑route, alternate, and destination areas. For IFR, this usually includes TAFs (terminal aerodrome forecasts), METARs (current weather reports), area forecasts, and wind/temperature charts at your planned cruising levels. For VFR, focus on visibility, cloud bases, convective activity, and local phenomena such as sea breezes or mountain waves.
NOTAMs (Notices to Air Missions) tell you about temporary or recent changes to the aeronautical environment: runway closures, navigation aid outages, airspace restrictions, or special events. They directly affect your routing and altitudes and may even determine whether a flight is feasible at all.

Confirm aircraft status and performance

Make sure your aircraft is airworthy, within inspection dates, and properly equipped for the intended flight rules and airspace. For example, certain controlled airspace may require a transponder with altitude reporting, GNSS (satellite navigation), or specific radios. For IFR, instrument and navigation equipment requirements are usually stricter.
Gather performance data such as climb rates, fuel burn, cruise speeds, and runway length requirements for the expected weight and environmental conditions. This information will feed directly into your estimated times en route (ETE), fuel calculations, and alternate selection.

Define your operational constraints

Clarify any constraints that will shape your plan: required arrival time, daylight limits, duty time, minimum fuel reserves, or training objectives (e.g. instrument approaches to specific runways). For VFR, consider daylight and visual meteorological conditions (VMC) requirements. For IFR, consider preferred routing, minimum en‑route altitudes, and terrain clearance.

Step 2: Route planning for VFR and IFR

Once you understand the environment and your aircraft capabilities, you can design a safe and efficient route. The principles are similar for VFR and IFR, but the tools and constraints differ slightly.

VFR route planning basics

For VFR (visual flight rules), you navigate primarily by visual reference to the ground, supported by instruments as needed. Your route typically follows prominent landmarks, avoids complex or restricted airspace, and respects terrain and obstacle clearance. You may plan via reporting points, towns, rivers, or other easily identifiable features, sometimes combined with radio navigation aids or GPS waypoints.
When planning a VFR route, consider:
  • Controlled and restricted airspace along the route
  • Minimum safe altitudes over terrain and obstacles
  • Glide range to suitable forced landing areas for single‑engine aircraft
  • Fuel stops and diversion options
  • Ease of navigation and workload, especially for training flights

IFR route planning basics

For IFR (instrument flight rules), your route is usually built from published instrument procedures and en‑route structures. This may include standard instrument departures (SIDs), en‑route airways, direct segments between navigation fixes, and standard terminal arrival routes (STARs) into the destination.
When planning an IFR route, consider:
  • Availability and status of navigation aids and waypoints
  • Minimum en‑route altitudes and obstacle clearance
  • Preferred or published ATS routes between city pairs
  • Winds aloft and performance at various flight levels
  • Arrival procedures and approach types available at the destination and alternates

Choosing levels and altitudes

Select cruising levels that satisfy regulatory requirements (such as semicircular or quadrantal rules based on magnetic track), maintain terrain and obstacle clearance, and provide suitable performance and fuel efficiency. For IFR, you must also respect published minimum altitudes and any airspace level constraints. For VFR, you may choose altitudes to optimize visibility, comfort, and safety, as long as they comply with minimum heights over populated and unpopulated areas.

Step 3: Fuel, time, and performance calculations

Accurate estimates of time and fuel are essential for a reliable flight plan. They also demonstrate that you meet legal fuel reserve requirements and can complete the flight safely, even with reasonable delays or diversions.
For each leg of your route, determine:
  • Leg distance (from chart or planning software)
  • Planned true airspeed and expected groundspeed (considering forecast wind)
  • Estimated time en route (ETE) for each leg and total time
  • Fuel required for each leg and total trip fuel
  • Taxi, contingency, alternate, and reserve fuel as required by regulation or company policy
These values feed into the flight plan fields such as total estimated elapsed time, fuel endurance, and, in some systems, detailed leg information. Whether you fly VFR or IFR, the logic is the same: know how long you can stay in the air and compare it with how long you intend to be there.

Step 4: Understand the standard flight plan form

Most countries base their flight plan format on the ICAO flight plan form, whether you submit it on paper, via a web portal, or through an app. The presentation may differ, but the underlying fields are usually the same. Knowing the logic of these fields helps you file correctly anywhere.

Core identification and flight rules fields

Key items include:
  • Aircraft identification: Your callsign or registration, as used on the radio.
  • Flight rules: VFR, IFR, or a combination (e.g. starting IFR and continuing VFR).
  • Type of flight: For example, general aviation, commercial, training, or military, depending on local options.
  • Number and type of aircraft: Including wake turbulence category for separation planning.
  • Equipment: Navigation, communication, and surveillance equipment on board (such as GNSS, VHF radios, transponder type).

Route and timing fields

The route section captures where you are going and how you plan to get there:
  • Departure aerodrome and time: Usually given in UTC, with a standard four‑letter code where available.
  • Cruising speed and level: Expressed in knots or Mach and flight level or altitude, depending on local conventions.
  • Route: A sequence of waypoints, airways, procedures, or plain language descriptions, depending on requirements.
  • Destination aerodrome and total EET: Estimated elapsed time from take‑off to arrival at the destination.
  • Alternate aerodromes: One or more alternates in case you cannot land at the planned destination.

Other information and survival details

The last part of the form usually captures special or optional data:
  • Other information: Free‑text or coded items for special procedures, requests, or capabilities (for example, special handling, PBN capabilities, or training remarks).
  • Endurance: Total fuel endurance in hours and minutes.
  • Persons on board: Total number of people, for search and rescue purposes.
  • Emergency and survival equipment: Radios, dinghies, life jackets, survival kits, and aircraft color/markings.
Not every system requires all of these fields for every flight, but understanding them ensures you can adapt to different national implementations without confusion.

Step 5: Submitting the flight plan

Once your route, fuel, and performance data are ready and you understand the fields, you can submit the flight plan. The submission method may vary, but the sequence of actions is similar across countries and aerodrome types.

Where and how to file

Common filing channels include:
  • AIS/ATS briefing offices: In person, by phone, or via national web portals.
  • Electronic flight bag (EFB) apps: Integrated planning tools that submit directly to the ATS system.
  • Aerodrome operations or tower: At some aerodromes, you can file directly with local ATS staff.
Small aerodromes without a control tower may still support flight plan filing through a local office, a regional briefing unit, or online services. Large international aerodromes often have dedicated briefing facilities or automated kiosks. In every case, check the local aeronautical information publication (AIP) or equivalent source for specific instructions.

Timing considerations

Many authorities recommend or require that flight plans be filed a certain time before departure, especially for IFR or international flights. This lead time allows the system to distribute your plan to relevant units along the route. Filing too late can result in delays or a requirement to refile.
As a general habit, aim to file once your planning is stable but early enough to accommodate any last 6minute changes requested by ATS. For local VFR flights from small aerodromes, this may be shortly before departure; for complex IFR or cross 6border flights, significantly earlier filing is advisable.

Step 6: Activating and amending the flight plan

Submitting a flight plan does not always mean it is active. In many systems, especially for VFR flights from uncontrolled aerodromes, you must ensure the plan is explicitly activated at take‑off. IFR flights departing from controlled aerodromes are usually activated automatically when you depart under a clearance.

Activating the flight plan

Common activation methods include:
  • Automatic activation by the tower or departure control when you take off under an IFR or controlled VFR clearance.
  • Radio call after departure to a flight information service or area control unit, confirming airborne time and requesting activation.
  • Telephone activation through a briefing office if radio coverage is limited at low level.
Always confirm local procedures so that search and rescue services will act on your plan if you become overdue. An unactivated plan may give a false sense of security.

Amending or delaying the flight

If your departure time changes significantly or your route needs adjustment, inform ATS as early as possible. You can usually:
  • Send a delay message or revised off‑block time through the same system you used to file.
  • Request a route change via radio or phone, especially for IFR flights already in the system.
  • Cancel and refile if the changes are substantial or if local procedures require a fresh plan.
Keeping your plan accurate helps controllers and reduces the risk of unnecessary search and rescue action triggered by an apparent overdue situation.

Step 7: Arrival, closing, and search and rescue

The end of the flight is just as important as the beginning from a flight plan perspective. If the system does not know you have landed safely, it may initiate search and rescue procedures based on your estimated arrival time and endurance.

Closing the flight plan

At controlled aerodromes, IFR flight plans and many VFR plans are automatically closed when you land and vacate the runway under the supervision of the tower. At uncontrolled aerodromes or for purely advisory services, you may need to close the plan yourself.
Common methods include:
  • Radio call on the ground to the responsible ATS unit, confirming landing and requesting closure.
  • Telephone call to the briefing office or area control after landing.
  • Automatic closure if specified by local procedures when you report landing to a flight information service.
Make it a standard habit: after securing the aircraft and passengers, confirm that the flight plan is closed, especially when operating from small or remote aerodromes.

Search and rescue implications

The timing fields in your flight plan departure time, estimated elapsed time, and fuel endurance help authorities decide when to start concern and alert phases if you are overdue. Providing realistic estimates and promptly closing your plan when safe on the ground prevents unnecessary alerts and ensures that real emergencies receive a timely response.

VFR vs IFR: what actually changes in the process?

Although the underlying steps are similar, there are a few practical differences between filing VFR and IFR plans that matter in day‑to‑day operations.
  • Regulatory requirement: IFR plans are usually mandatory; VFR plans may be optional except for certain routes or airspace.
  • Route structure: IFR routes rely more on published procedures and minimum altitudes; VFR routes can be more flexible and visually oriented.
  • ATC involvement: IFR flights are typically under positive control for most or all of the route; VFR flights may receive information and traffic advisories rather than clearances, depending on airspace.
  • Equipment: IFR often requires more advanced navigation and communication equipment, which must be correctly coded in the flight plan.
Despite these differences, the mindset remains the same: plan thoroughly, communicate clearly, and ensure the system knows your intentions from departure to arrival.

Practical tips for universally good flight plan habits

Regardless of country, runway length, or aerodrome size, a few habits will make your flight plan filing smoother and safer.
  • Use current charts and data: Out‑of‑date information is a common source of route and altitude errors.
  • Double‑check identifiers: Confirm aerodrome, waypoint, and airway codes to avoid unintended routings.
  • Be realistic with times: Over‑optimistic ETE or endurance values can compromise search and rescue effectiveness.
  • Keep a copy: Retain a printout, screenshot, or electronic copy of the filed plan for reference in flight.
  • Review local procedures: Even with a global form, each state may have specific requirements for activation, amendments, and closure.
By treating flight plan filing as an integral part of your preflight routinerather than a last1minute administrative taskyou enhance safety, reduce workload in the air, and make it easier for air traffic services to support you, whether you are flying a short local VFR hop or a long IFR journey across multiple regions.