Skip to content
WanderNerd
Check a flight

Flight Reliability

UA 6137 · United Airlines

Washington → Detroit (IAD–DTW)86% of its flights flew this route. The rest (ATL–IAD, IAH–LIT) are included in these numbers.

97
Nerd Approved
WanderNerd Reliability Score
90%
Arrive within 15 minutes
4 min
Average arrival delay
0.3%
Cancelled
10 min early
Median arrival delay

Based on 334 historical flights. Data through May 2026.

What the data says

The 3–6 AM departure wins.

UA 6137 departing between 3–6 AM arrived on time 97% of the time, versus 90% between 6–9 AM.

Sunday scaries are real for this one.

UA 6137 arrived on time 94% of the time on Mondays. On Sundays: 87%.

Better than the IAD–DTW route average.

UA 6137 arrived on time 90% of the time, versus 79% across the IAD–DTW route.

Better than the United Airlines network average.

UA 6137 arrived on time 90% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon94%(51 flights)
  • Tue90%(48 flights)
  • Wed94%(48 flights)
  • Thu90%(51 flights)
  • Fri89%(52 flights)
  • Sat90%(38 flights)
  • Sun87%(45 flights)
On-time by departure window
  • 3–6 AM97%(31 flights)
  • 6–9 AM90%(285 flights)
  • 9 AM–12 PM—(1 flights)
  • 6–9 PM94%(16 flights)
On-time trend by month
100%
May

Jun 87% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202587%31
August 202593%28
September 202590%30
October 202590%31
November 202587%30
December 202579%29
January 2026100%22
February 202695%20
March 202684%25
April 202697%30
May 2026100%27
Departures on time
89%
Diverted
0%
Flights flown
333
Months covered
12

Same route, other flights

Keep nerding

Based on 334 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.