According to PlainFlights' airport traffic ranking (BTS On-Time Performance total flights), Riverton/Lander, WY (RIW) ranks #312 of 382 tracked US airports by total flights (most flights = #1). Riverton/Lander, WY posts above-median on-time performance among the 382 tracked U.S. airports, as a smaller regional airport.
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RIW 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: 67,478.
Late Aircraft28.3% (19,085 min)
Carrier50.9% (34,363 min)
NAS (National Aviation System)8.5% (5,752 min)
Weather12.2% (8,199 min)
Security0.1% (79 min)
RIW - seasonal on-time pattern
Best: September (95.9%) · worst: February (90.7%)
RIW - on-time rate by year
2020–2025, year-over-year trend.
RIW - taxi-out and taxi-in (monthly)
Average taxi-out 17.8 min · taxi-in 4.9 min over the last 24 reported months (U.S. airport mean taxi-out ≈ 16.4 min).
RIW's average taxi-out (17.8 min) sits near the recent U.S. airport mean (~16.4 min). Month-to-month, it swings from 11.6 min (June 2024) to 25.9 min (February 2024).
Cancellation & Diversion Analysis
Flight disruption statistics for Riverton/Lander, WY.
Two PlainFlights-derived comparison paths for Riverton/Lander, WY, both outside Wyoming 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 Riverton/Lander, WY is the delay mix: Carrier owns 50.9% of 67,478 delay minutes across 6,519 BTS flights. The on-time headline is 85.6% (6.6 pts above the 79% national average), with 939 delayed and 96 cancelled (1.47%).
Delay minutes concentrate in Carrier (28.3% late-aircraft, 50.9% carrier, 8.5% NAS, 12.2% weather, 0.1% security). As a quieter airport, a single late inbound can swing the month more than at a mega-hub.
On the multi-year calendar, RIW is strongest in September (95.9% on-time) and weakest in February (90.7%), a 5.2-point swing. Volume peaks in December (~101 flights/month). The busiest connecting route is to DEN (Denver) at 84.2% on-time. Field definitions: on-time performance explained.
Riverton/Lander, WY vs. the national on-time distribution
On-time rate among all 382 tracked U.S. airports
85.6%Top 27%higher than 73% of 382 airports
Riverton/Lander, WY
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.
RIW'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 RIW before you book a connection. See top routes →
Travel in September rather than February if your dates are flexible. Seasonal patterns →
Gate-to-wheels taxi-out averages 17.8 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 Riverton/Lander, WY's on-time rate?
Riverton/Lander, WY (RIW) has a 85.6% on-time rate across 6,519 BTS-tracked flights (2020-2025), 6.6 pts above the 79% national flight-weighted average; that places it in roughly the above-median on-time performance.
How does RIW rank among U.S. airports by traffic volume?
Riverton/Lander, WY ranks #312 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 Riverton/Lander, WY?
Carrier is the leading delay cause at RIW, accounting for 50.9% of delay minutes. The full breakdown: 28.3% late-aircraft, 50.9% carrier, 8.5% NAS/air-traffic-control, 12.2% weather, and 0.1% security.
When is the best time to fly through Riverton/Lander, WY?
September is historically RIW's strongest month at 95.9% on-time, while February is the weakest at 90.7%, a 5.2-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