Booking calculator

How many lessons should a student book?

Weather, maintenance, no-shows, and repeat lessons all eat into a schedule. Set your school's rates and see how many slots it really takes to get one completed, passed lesson, and how many to book each week to stay on pace.

New · live weather

Plan my week

Mark when you can fly. FlightPath reads the forecast for your airport, applies your phase's minimums, and tells you which slots to book, how many, and when you will finish.

Where you are in trainingLessons to complete per weekFlight lessons left in this rating

Loading the forecast for KHOU…

Your school's numbers

Cancellation probabilities

Weather cancellation15%

Share of scheduled flights lost to weather

Maintenance cancellation8%

Share of scheduled flights lost to aircraft downtime

Student no-show (flight)10%

Share of flight slots the student misses

Student no-show (ground)7%

Share of ground slots the student misses

First-attempt pass rates

Flight lesson pass rate81%

First-attempt completion to standard

Ground lesson pass rate88%

First-attempt completion to standard

Stage check pass rate85%

First-attempt stage check pass rate

Flight lessons to book

1.75 expected per passed lesson

Ground lessons to book

1.22 expected per passed lesson

Stage check bookings

1.67 expected per passed check

Weekly plan

To complete this many passed lessons per week, reserve this many slots.

Target flights / wkTarget grounds / wk

Book flights

Book grounds

Expect about 1.04 of those flights to cancel. A student who books only 2 should expect about 1.14 completed, passed flight lesson a week.

The math

p_cancel_flight = 1 − (1−pW)(1−pM)(1−pS): 30%
p_cancel_ground = pS_ground: 7%
flights = ⌈ 1 / ((1−p_cancel) × r_flight) ⌉: 2
grounds = ⌈ 1 / ((1−p_cancel_g) × r_ground) ⌉: 2
stage = ⌈ 1 / ((1−p_cancel) × r_stage) ⌉: 2

Weather, maintenance, and no-shows are treated as independent events. Ceiling rounds up so you never under-book.

By lesson (Private Pilot flight stages)

With your school's data connected, each lesson uses its own historical pass rate. Here every lesson uses the flight rate above, and stage checks use the stage check rate.

Stage	Lesson	Name	Syllabus hrs	Pass rate	Slots to book
1	FL1	Orientation Flight and Cockpit Familiarization	1.5	81%	2
1	FL2	Straight and Level, Turns, Climbs, and Descents	1.5	81%	2
1	FL3	Slow Flight and Introduction to Stalls	1.5	81%	2
1	FL4	Power-Off and Power-On Stalls	1.5	81%	2
1	FL5	Traffic Pattern and Touch-and-Go Operations	2.0	81%	2
1	FL6	Stage 1 Flight CheckCheck	1.5	85%	2
2	FL7	Pre-Solo Review and Emergency Procedures	1.5	81%	2
2	FL8	First Solo	1.0	81%	2
2	FL9	Solo Practice, Pattern Work	1.0	81%	2
2	FL10	Introduction to Cross-Country Navigation (Dual)	2.0	81%	2
2	FL11	Night Cross-Country (Dual)	3.0	81%	2
2	FL12	Dual Cross-Country (Day, Long)	3.0	81%	2
2	FL13	Solo Cross-Country (Short)	2.0	81%	2
2	FL14	Solo Cross-Country (Long)	4.0	81%	2
2	FL15	Stage 2 Flight CheckCheck	2.0	85%	2
3	FL16	Ground Reference Maneuvers	1.5	81%	2
3	FL17	Steep Turns	1.5	81%	2
3	FL18	Emergency Procedures in Flight	1.5	81%	2
3	FL19	Advanced Takeoff and Landing Techniques	2.0	81%	2
3	FL20	Instrument Reference and Unusual Attitudes	1.5	81%	2
3	FL21	Night Flight Operations (Dual)	2.0	81%	2
3	FL22	Stage 3 Flight CheckCheck	2.0	85%	2
4	FL23	Maneuver Review 1	2.0	81%	2
4	FL24	Maneuver Review 2 and Mock Checkride	2.0	81%	2
4	FL25	End of Course Flight CheckEOC	2.0	85%	2

Get this on your school's real numbers

Send us a CSV export from your scheduler or your last year of training records and we will return the same calculator, plus per-lesson pass rates and a per-student pace forecast, built on your data. No new system to adopt.