An airline pilot carrying passengers in the United States can log 8 to 9 hours of flight time in a single duty day and up to 1,000 hours per year, with a rolling cap of 100 hours in any 28-day window. Those are the numbers set by the FAA for the major and regional carriers most travelers fly. Cargo pilots, charter pilots, and private pilots work under different rules with different limits, and the answer to how many hours pilots can fly per day and per year depends on which category you mean.
The Two Clocks: Flight Time and Flight Duty Period
Before the numbers make sense, two terms have to be separated. Flight time counts only the period from when the aircraft first moves under its own power until it stops at the destination gate. Pilots often call it block time. Flight duty period, or FDP, is a broader clock that starts when a pilot reports for duty intending to fly and doesn’t stop until the aircraft parks after the final flight of the day. Preflight briefings, ground delays, simulator training, and required deadhead transportation all fall inside the FDP.1eCFR. 14 CFR 117.3 – Definitions
Because FDP captures the full workday, it is often the limit that actually constrains scheduling, not raw flight time. A pilot can hit an FDP ceiling long before running out of allowable flight hours.
Passenger Airline Limits
The strictest fatigue rules apply to airline pilots flying passengers under Part 121 of the federal aviation regulations. The daily and cumulative limits live in 14 CFR Part 117.2eCFR. 14 CFR Part 117 – Flight and Duty Limitations and Rest Requirements: Flightcrew Members
Daily Limits
For a standard two-pilot crew with no relief pilot on board, the maximum flight time in a duty day is 9 hours when the pilot reports for duty between 5:00 a.m. and 8:00 p.m. If the report time falls between 8:00 p.m. and 5:00 a.m., the cap drops to 8 hours. The lower nighttime number reflects what fatigue research shows about alertness during the body’s normal sleep window.3eCFR. 14 CFR Part 117 – Table A
The flight duty period cap for that same unaugmented crew ranges from 9 to 14 hours. Two factors set the exact number: the time of day the pilot reports and how many flight segments are scheduled. A pilot reporting mid-morning with a single long leg can work up to 14 FDP hours. That same pilot scheduled for seven or more short hops gets 11.5. A pilot reporting in the middle of the night maxes out at 9 regardless of segments.4eCFR. Table B to Part 117 – Flight Duty Period: Unaugmented Operations
Annual and Rolling Limits
Above the daily caps, Part 117 stacks longer-term limits to prevent chronic fatigue:
- No more than 100 hours of flight time in any 672 consecutive hours (roughly 28 days)
- No more than 1,000 hours of flight time in any 365-day period
- No more than 60 FDP hours in any 168 consecutive hours (one week)
- No more than 190 FDP hours in any 672 consecutive hours
The 100-hour figure is often described as a monthly limit, but it isn’t tied to calendar months. It’s a rolling window the airline has to track continuously, and the same is true for the FDP caps.5eCFR. 14 CFR 117.23 – Cumulative Limitations
How Long-Haul Flights Exceed the Daily Cap
Ultra-long routes work around the daily flight time limit by carrying extra pilots who rotate through rest breaks in onboard bunks or dedicated rest seats. A three-pilot crew can fly up to 13 hours. A four-pilot crew can fly up to 17.2eCFR. 14 CFR Part 117 – Flight and Duty Limitations and Rest Requirements: Flightcrew Members
The FDP a crew can work depends on the quality of the rest facility on board. Class 1 is a private bunk with a flat sleeping surface, Class 2 is a reclining seat in an enclosed area separate from passengers, and Class 3 is a reclining seat not separated from the cabin. A four-pilot crew with a Class 1 bunk reporting in the morning can work an FDP of up to 19 hours. With a Class 3 seat, the ceiling is 15.5.6eCFR. Table C to Part 117 – Flight Duty Period: Augmented Operations
Required Rest Between Duty Days
Part 117 requires a minimum of 10 consecutive hours of rest immediately before any flight duty period or reserve assignment. Within that block, the pilot must have at least 8 uninterrupted hours of sleep opportunity, meaning time genuinely free from contact by the airline rather than “available” while carrying a phone.2eCFR. 14 CFR Part 117 – Flight and Duty Limitations and Rest Requirements: Flightcrew Members
Every pilot must also receive at least 30 consecutive hours completely free from all duty within any 168-hour period. That weekly reset is meant to clear the sleep debt that daily rest alone cannot, and it applies before the pilot can start a new flight duty period or reserve assignment.
Extensions for Weather and Delays
Real operations don’t always fit inside the planned FDP, and Part 117 allows extensions under tightly controlled conditions. Before the aircraft leaves the gate, the pilot in command and the airline can extend the FDP by up to 2 hours for unforeseen circumstances. Any extension of more than 30 minutes can happen only once before the pilot gets a full rest period, and the extension cannot push the pilot past the cumulative FDP limits. Extensions over 30 minutes must be reported to the FAA within 10 days.7eCFR. 14 CFR 117.19 – Flight Duty Period Extensions
Once airborne, the rules loosen out of necessity. The pilot in command and the airline can extend the FDP as far as needed to land safely at the destination or an alternate. The same “once before rest” and reporting rules apply, but an in-flight extension can exceed the cumulative FDP limits.
Charter and On-Demand Pilots
Pilots flying charter, air ambulance, or on-demand trips operate under 14 CFR Part 135. The limits are simpler than Part 117 but generally allow more annual flying. For scheduled Part 135 flights, a single pilot can fly up to 8 hours in any 24-hour period, with an annual cap of 1,200 hours. For unscheduled operations with a two-pilot crew, the daily limit rises to 10 hours and the annual cap to 1,400 hours.8eCFR. 14 CFR Part 135 Subpart F – Crewmember Flight Time and Duty Period Limitations and Rest Requirements
Cargo Pilots
When the FAA finalized Part 117 in 2012, it excluded all-cargo operations. The agency acknowledged the safety benefits would be the same but concluded the compliance costs for cargo carriers outweighed the quantified benefits. Cargo airlines can opt into Part 117 voluntarily. If they don’t, their pilots fly under the older Part 121 rules in Subparts Q, R, and S.9Federal Aviation Administration. Final Rule – Flightcrew Member Duty and Rest Requirements
For domestic cargo operations under Subpart Q, the limits are 8 hours of flight time between required rest periods, 30 hours in any 7 consecutive days, 100 hours in any calendar month, and 1,000 hours in any calendar year. The rest requirement is a sliding scale rather than a flat 10 hours: 9 hours before a duty period with under 8 hours of flight time, 10 hours for 8 to 9 hours of flight time, and 11 hours for 9 or more. Reduced rest as short as 8 hours is allowed if a longer compensatory rest follows within 24 hours. The weekly off-duty requirement is 24 consecutive hours in any 7 days, shorter than the 30 hours Part 117 requires.10eCFR. 14 CFR 121.471 – Flight Time Limitations and Rest Requirements: All Flight Crewmembers
For international cargo flights under Subpart R, a one- or two-pilot crew has the same 8-hour daily limit and 1,000-hour annual cap, with a weekly limit of 32 hours and a flat 24 consecutive hours off per week. Larger crews get higher daily limits, including 12 hours for a two-pilot crew supplemented by an additional flight crewmember.11eCFR. 14 CFR Part 121 Subpart R – Flight Time Limitations: Flag Operations
Private Pilots
If you hold a private pilot certificate and fly under Part 91 for personal or business trips, the FAA sets no flight time or duty time limits at all. The practical constraints are your own fatigue and the currency requirements that keep your certificate and medical valid.
The one exception inside Part 91 is fractional ownership programs under Subpart K, which operate more like commercial flying. Those pilots face limits similar to Part 135: 8 hours per day for a single pilot, 10 hours for two pilots, and 1,400 hours per year.12eCFR. 14 CFR 91.1059 – Flight Time Limitations and Rest Requirements: One or Two Pilot Crews
What Happens When Pilots Exceed the Limits
The FAA classifies exceeding flight time limits as a moderate-severity violation that can lead to suspension of a pilot’s certificate or civil monetary penalties. In extreme cases involving reckless disregard for the rules, the agency can revoke a certificate outright, which means starting the certification process from scratch.13Federal Aviation Administration. FAA Compliance and Enforcement Program (FAA Order 2150.3C)
The exposure is shared. Under Part 117, no airline may schedule and no pilot may accept an assignment that would exceed the limits. Airlines face civil penalties for scheduling violations, and repeated problems can trigger enhanced surveillance or action against the operating certificate itself.