According to PlainFlights' airport traffic ranking (BTS On-Time Performance total flights), Alamosa, CO (ALS) ranks #361 of 382 tracked US airports by total flights (most flights = #1). Alamosa, CO posts top-5% on-time performance among the 382 tracked U.S. airports, as a smaller regional airport.
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ALS on-time rate vs. the national average
Ahead of the U.S. average across all 382 tracked airports.
Volume vs. on-time rate
Where Alamosa, CO sits on volume vs. on-time rate
Among the 382 U.S. airports in the BTS corpus, Alamosa, CO handles more flight
volume than 6% of them, and has a higher on-time rate than
95% of them, placing it in the quadrant for quiet and reliable.
Flight volume and on-time rate are independent figures: a busy airport can still run
reliably, and a quiet one can still run late.
Alamosa, CO vs. a 29-airport national peer sample, volume percentile vs. on-time-rate percentile.
Total flights (2020-2025): 1,982 ·
On-time rate: 89.0%
Delay Cause Breakdown
Top delay cause: Carrier.
Total delay minutes18,636 min
Carrier12,132 min · 65%
Late Aircraft4,724 min · 25%
Weather1,429 min · 8%
NAS (National Aviation System)351 min · 2%
Security0 min · 0%
Source: U.S. DOT Bureau of Transportation Statistics, On-Time Performance
ALS - seasonal on-time pattern
Best: September (99%) · worst: July (91.5%)
ALS - on-time rate by year
2020–2022, year-over-year trend.
ALS - taxi-out and taxi-in (monthly)
Average taxi-out 16 min · taxi-in 4.6 min over the last 20 reported months (U.S. airport mean taxi-out ≈ 16.4 min).
ALS's average taxi-out (16 min) sits near the recent U.S. airport mean (~16.4 min). Month-to-month, it swings from 9.9 min (September 2021) to 23.6 min (December 2020).
Two PlainFlights-derived comparison paths for Alamosa, CO, both outside Colorado so the neighborhoods are not same-state geography. Axes stay disjoint: volume peers exclude the on-time peer set. Same-state compare stays below.
The standout signal at Alamosa, CO is the delay mix: Carrier owns 65.1% of 18,636 delay minutes across 1,982 BTS flights. The on-time headline is 89% (10 pts above the 79% national average), with 219 delayed and 40 cancelled (2.02%).
Delay minutes concentrate in Carrier (25.3% late-aircraft, 65.1% carrier, 1.9% NAS, 7.7% weather, 0.0% security). As a quieter airport, a single late inbound can swing the month more than at a mega-hub.
On the multi-year calendar, ALS is strongest in September (99% on-time) and weakest in July (91.5%), a 7.5-point swing. Volume peaks in December (~107 flights/month). The busiest connecting route is to DEN (Denver) at 90.6% on-time. Field definitions: on-time performance explained.
Alamosa, CO vs. the national on-time distribution
On-time rate among all 382 tracked U.S. airports
89%Top 5%higher than 95% of 382 airports
Alamosa, CO
60%95%
U.S. airports by on-time rate, bucketed by value
Each bar is a band; taller bars hold more airports. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2022).
Statistics reflect cumulative performance across all available reporting periods. On-time rates exclude cancelled and diverted flights.
ALS's on-time book is stronger than most peers; the remaining risk sits in the delay mix, not a weak headline rate.
Check the busiest route from ALS before you book a connection. See top routes →
Travel in September rather than July if your dates are flexible. Seasonal patterns →
Gate-to-wheels taxi-out averages 16 min here; check the monthly series before a tight connection. Taxi times →
On-time rate reflects the BTS historical average across all reporting carriers at this airport, not any single flight or airline.
Frequently Asked Questions
What is Alamosa, CO's on-time rate?
Alamosa, CO (ALS) has a 89% on-time rate across 1,982 BTS-tracked flights (2020-2022), 10 pts above the 79% national flight-weighted average; that places it in roughly the top-5% on-time performance.
How does ALS rank among U.S. airports by traffic volume?
Alamosa, CO ranks #361 of 382 tracked US airports by total BTS flights (most flights = #1), making it a smaller regional airport.
What's the most common cause of delays at Alamosa, CO?
Carrier is the leading delay cause at ALS, accounting for 65.1% of delay minutes. The full breakdown: 25.3% late-aircraft, 65.1% carrier, 1.9% NAS/air-traffic-control, 7.7% weather, and 0.0% security.
When is the best time to fly through Alamosa, CO?
September is historically ALS's strongest month at 99% on-time, while July is the weakest at 91.5%, a 7.5-point swing across the BTS historical record.