Airport · MMH · Mammoth Lakes, California
Mammoth Lakes, CA
Mammoth Lakes, CA posts bottom-quartile on-time performance among the 382 tracked U.S. airports, as a smaller regional airport. According to the U.S. DOT Bureau of Transportation Statistics, drawn from 540 flights (2020–2025); its biggest delay driver is carrier.
Data updated 2026-06-13
- 80.7%
- On-time
- Top 80%
- on-time, US airports
- 91 min
- Delay when late
- 13.15%
- Cancelled
Key Performance Metrics
Total Flights
540
Best Month
Mar 92.8%
Worst Month
Feb 83.3%
Delayed
104
Cancelled
71
MMH on-time rate vs. the national average
Ahead of the U.S. average across all 382 tracked airports.
Where MMH sits among all 382 tracked airports
MMH's 80.7% on-time rate falls in the 80-85% band, the 192-airport band it shares.
National on-time-rate distribution
- 60-65% 1
1 airport between 60% and 65% on-time
1 airports
- 65-70% 4
4 airports between 65% and 70% on-time
4 airports
- 70-75% 9
9 airports between 70% and 75% on-time
9 airports
- 75-80% 48
48 airports between 75% and 80% on-time
48 airports
- 80-85%
192 airports between 80% and 85% on-time
192 airports
- 85-90%
116 airports between 85% and 90% on-time
116 airports
- 90-95% 12
12 airports between 90% and 95% on-time
12 airports
What this shows MMH is marked in the 80-85% band.
Delay Cause Breakdown
Top delay cause: Carrier. Total delay minutes: 4,673.
Seasonal Performance Patterns
Monthly averages across all years of data. Best month: March (92.8% on-time). Most delays: February (83.3% on-time).
| Month | Avg Flights | Avg Delayed | Avg Cancelled | On-Time % |
|---|---|---|---|---|
| March | 180 | 24 | 49 | 92.8% |
| February | 174 | 52 | 10 | 83.3% |
| January | 186 | 28 | 12 | 91.9% |
Cancellation & Diversion Analysis
Flight disruption statistics for Mammoth Lakes, CA.
Cancellation Rate
13.15%
71 of 540 flights
Diversion Rate
0.00%
0 of 540 flights
Delay Rate
19.3%
104 of 540 flights
Monthly Performance
Recent 24 months of flight data.
| Period | Flights | Dep Delayed | Arr Delayed | Cancelled | Diverted |
|---|---|---|---|---|---|
| Mar 2020 | 180 | 13 | 11 | 49 | 0 |
| Feb 2020 | 174 | 29 | 23 | 10 | 0 |
| Jan 2020 | 186 | 15 | 13 | 12 | 0 |
Airports With a Similar On-Time Rate
Other U.S. airports nationwide whose on-time rate is closest to Mammoth Lakes, CA's 80.7%.
Other Airports in California
Compare performance with other California airports.
Los Angeles, CA
Los Angeles · 2,137,032 flights
San Francisco, CA
San Francisco · 1,466,784 flights
San Diego, CA
San Diego · 973,807 flights
Sacramento, CA
Sacramento · 592,833 flights
San Jose, CA
San Jose · 546,547 flights
Santa Ana, CA
Santa Ana · 482,186 flights
Oakland, CA
Oakland · 472,036 flights
Burbank, CA
Burbank · 319,148 flights
Keep exploring
More flight data around Mammoth Lakes, CA.
California flight data
Statewide on-time and delay aggregates, plus every reporting airport in California.
View CA data →Airport rankings
See where MMH sits among U.S. airports on on-time rate and average delay.
Best on-time airports →Compare airports
Put MMH head-to-head with another airport on delays and reliability.
Open comparison tool →What the Data Says About MMH
Mammoth Lakes, CA in Mammoth Lakes, California handled 540 flights in the Bureau of Transportation Statistics dataset between 2020 and 2020, posting a 80.7% on-time departure rate. Of those flights, 104 experienced delays, 71 were cancelled, and 0 were diverted. The cancellation rate works out to 13.15%, the diversion rate to 0.00%, and the average delay when departures run late is 90.5 minutes. These figures are the baseline for comparing MMH against other airports in the same state and nationally.
Breaking down what drives delays at MMH, Carrier leads the pack. Carrier accounts for 30.4% of total delay minutes, followed by Late Aircraft at 29.5% and Weather at 25.8%. Weather contributes 25.8% of delay minutes at this airport, while security holds the smallest share at 0.0%. Travelers often overestimate the weather share; the BTS categorization shows late-arriving aircraft and carrier operations as the larger contributors.
Seasonally, March runs the cleanest at MMH with a 92.8% on-time rate, while February is the roughest at 83.3% - a 10-point swing between best and worst month. Volume peaks in January, when average flights hit 186. Combine these numbers - 80.7% on-time, 90.5-minute average delay, 13.15% cancellation rate, and you have a concrete picture of departure reliability at Mammoth Lakes, CA.
Frequently Asked Questions
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Using MMH's data
An airport-level on-time rate is a starting point, not a guarantee for your specific flight.
- Compare MMH against airports with a similar on-time rate. Compare airports
- Travel in March rather than February if your dates are flexible. Seasonal patterns
- Scores vary by airline and route within the same airport; check the specific carrier you're flying. Browse airlines
On-time rate reflects the BTS historical average across all reporting carriers at this airport, not any single flight or airline.
Related
Source: U.S. Bureau of Transportation Statistics (BTS) Airline on-time performance and operational reliability · 2025
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. Airport figures are computed directly from BTS On-Time Performance data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.