When must a flight plan be issued?

Where a flight plan is required, it must be submitted before departure to an air traffic services reporting office or, during flight, transmitted to the appropriate air traffic services unit or air-ground control radio station, unless arrangements have been made for submission of repetitive flight plans (RPLs).



A flight plan must be filed with Air Traffic Control (ATC) primarily whenever a pilot intends to fly under Instrument Flight Rules (IFR), which is mandatory for almost all commercial airline operations and any flight in "Class A" airspace. For Visual Flight Rules (VFR) flights, a plan is not always legally required in many regions, but it is highly recommended for cross-country journeys to ensure Search and Rescue services are alerted if the aircraft does not arrive. In 2026, flight plans are typically submitted electronically via specialized software or dispatchers at least 30 minutes to several hours before the scheduled "pushback" time. For international flights crossing oceanic boundaries or specialized airspace, the filing window is even stricter to allow for slot coordination and fuel planning. The plan includes vital data such as the aircraft's registration, planned route, cruising altitude, estimated time of arrival, and the amount of fuel on board, ensuring that controllers can maintain safe separation between all aircraft in the sky.

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In most countries, flight plans are required for flights under IFR, but may be optional for flying VFR unless crossing international borders. Flight plans are highly recommended, especially when flying over inhospitable areas such as water, as they provide a way of alerting rescuers if the flight is overdue.

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After filing a VFR flight plan, you have to activate it when you take off and close it when you're finished flying. (If you fly IFR, ATC normally does that for you.)

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VFR flight plans must be filed whenever an aircraft plans a cross-country flight and plans to operate under VFR flight rules. However, VFR flight plans are not required, only strongly recommended by the FAA, when an aircraft flies through class B airspace.

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In the US you need to file a flight plan for the following flights: IFR flights. Defense VFR Flights, which are required to fly in the ADIZ that is off the coast of the US (an IFR flight plan may also be used). Some TFR's only allow air traffic to fly within their boundaries if they are on an IFR or VFR flight plan.

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A pilot in command may deviate from the planned flight path for reasons such as weather conditions or operational considerations. Such deviations do not relieve the pilot in command of the weather requirements or the requirements for terrain and obstacle clearance contained in this part and in part 91 of this chapter.

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In most countries, flight plans are required for flights under IFR, but may be optional for flying VFR unless crossing international borders. Flight plans are highly recommended, especially when flying over inhospitable areas such as water, as they provide a way of alerting rescuers if the flight is overdue.

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A flight plan includes the route the crew will fly and specifies altitudes and speeds. It also provides calculations for how much fuel the airplane will use and the additional fuel it will need to carry to meet various requirements for safety (see fig.

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A licensed flight dispatcher or flight operations officer is required by law to carry out flight planning and flight watch tasks in many commercial operating environments (e.g., US FAR §121, Canadian regulations).

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You can “air file,” or file an IFR flight plan while en route. Ideally, this would involve calling up the nearest ATC frequency, stating your N number, and waiting for a controller to acknowledge your transmission.

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No person may operate an aircraft under basic VFR when the flight visibility is less, or at a distance from clouds that is less, than that prescribed for the corresponding altitude and class of airspace.

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You may file a VFR flight plan by speaking to a Flight Service Station briefer by calling 1-800-WX-BRIEF and providing the agent with the necessary information about your flight. Alternatively, you may visit 1800WXBRIEF.com and file your flight plan online.

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Many pilots refer to this as the 1-2-3 rule: Plus or minus 1 hour from arrival, ceilings at least 2,000 feet and visibility at least 3 statute miles.

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Let's say the weather at your airport is IFR but clear a few miles away. While the VFR-only pilot will have to wait for the weather to improve, the IFR pilot can depart on an IFR flight plan, then cancel the IFR flight plan when they are in VFR conditions.

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Flight Following VS a VFR Flight Plan To open a flight plan you would contact a Flight Service Station (FSS), and once the flight plan is opened, you will not talk to the FSS until you have to close it. With flight following on the other hand, you may be talking to ATC during the entire flight.

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