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Flight Reliability

UA 5386 · United Airlines

Boise → Chicago (BOI–ORD)86% of its flights flew this route. The rest (LIT–ORD, LAX–SAN) are included in these numbers.

84
Pretty Reliable
WanderNerd Reliability Score
84%
Arrive within 15 minutes
0 min
Average arrival delay
1.6%
Cancelled
7 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

6–9 PM has a slight edge.

Departures between 6–9 PM arrived on time 87% of the time, against 81% between 9 AM–12 PM.

Skip Tuesday if you can.

UA 5386 arrived on time 89% of the time on Mondays. On Tuesdays: 77%.

A bit ahead of the BOI–ORD route.

UA 5386 arrived on time 84% of the time, versus 77% across the BOI–ORD route.

A bit ahead of the United Airlines network.

UA 5386 arrived on time 84% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon89%(52 flights)
  • Tue77%(51 flights)
  • Wed84%(51 flights)
  • Thu87%(52 flights)
  • Fri83%(52 flights)
  • Sat86%(49 flights)
  • Sun82%(51 flights)
On-time by departure window
  • 6–9 AM85%(306 flights)
  • 9 AM–12 PM81%(31 flights)
  • 12–3 PM—(6 flights)
  • 6–9 PM87%(15 flights)
On-time trend by month
74%
May

Jun 87% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202590%30
August 202584%31
September 202587%30
October 202584%31
November 202586%28
December 202590%30
January 202684%31
February 202682%28
March 202675%28
April 202683%30
May 202674%31
Departures on time
91%
Diverted
0.3%
Flights flown
358
Months covered
12

Same route, other flights

Keep nerding

Based on 365 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.