Airport · GUM · Guam, U.S. Pacific Trust Territories and Possessions
Guam, TT
According to PlainFlights' airport traffic ranking (BTS On-Time Performance total flights), Guam, TT (GUM) ranks #280 of 382 tracked US airports by total flights (most flights = #1). Guam, TT posts top-5% on-time performance among the 382 tracked U.S. airports, as a smaller regional airport.
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GUM on-time rate vs. the national average
Ahead of the U.S. average across all 382 tracked airports.
Delay Cause Breakdown
Top delay cause: Carrier.
Total delay minutes: 23,421.
Late Aircraft29.9% (7,009 min)
Carrier59.9% (14,027 min)
NAS (National Aviation System)10.0% (2,341 min)
Weather0.2% (44 min)
Security0.0% (0 min)
GUM - seasonal on-time pattern
Best: March (97.3%) · worst: June (94.1%)
GUM - on-time rate by year
2020–2025, year-over-year trend.
GUM - taxi-out and taxi-in (monthly)
Average taxi-out 15 min · taxi-in 3.4 min over the last 24 reported months (U.S. airport mean taxi-out ≈ 16.4 min).
GUM's average taxi-out (15 min) sits near the recent U.S. airport mean (~16.4 min). Month-to-month, it swings from 14.1 min (March 2024) to 16.1 min (August 2024).
Two PlainFlights-derived comparison paths for Guam, TT, both outside U.S. Pacific Trust Territories and Possessions 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 Guam, TT is the delay mix: Carrier owns 59.9% of 23,421 delay minutes across 8,429 BTS flights. The on-time headline is 90.6% (11.6 pts above the 79% national average), with 796 delayed and 40 cancelled (0.47%).
Delay minutes concentrate in Carrier (29.9% late-aircraft, 59.9% carrier, 10.0% NAS, 0.2% 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, GUM is strongest in March (97.3% on-time) and weakest in June (94.1%), a 3.2-point swing. Volume peaks in August (~123 flights/month). The busiest connecting route is to HNL (Honolulu) at 90.9% on-time. Field definitions: on-time performance explained.
Guam, TT vs. the national on-time distribution
On-time rate among all 382 tracked U.S. airports
90.6%Top 2%higher than 98% of 382 airports
Guam, TT
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 (2020–2025).
Statistics reflect cumulative performance across all available reporting periods. On-time rates exclude cancelled and diverted flights.
GUM'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 GUM before you book a connection. See top routes →
Travel in March rather than June if your dates are flexible. Seasonal patterns →
Gate-to-wheels taxi-out averages 15 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 Guam, TT's on-time rate?
Guam, TT (GUM) has a 90.6% on-time rate across 8,429 BTS-tracked flights (2020-2025), 11.6 pts above the 79% national flight-weighted average; that places it in roughly the top-5% on-time performance.
How does GUM rank among U.S. airports by traffic volume?
Guam, TT ranks #280 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 Guam, TT?
Carrier is the leading delay cause at GUM, accounting for 59.9% of delay minutes. The full breakdown: 29.9% late-aircraft, 59.9% carrier, 10.0% NAS/air-traffic-control, 0.2% weather, and 0.0% security.
When is the best time to fly through Guam, TT?
March is historically GUM's strongest month at 97.3% on-time, while June is the weakest at 94.1%, a 3.2-point swing across the BTS historical record.
Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights