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Flight Reliability

UA 590 · United Airlines

Baltimore → Chicago (BWI–ORD)91% of its flights flew this route. The rest (ORD–DFW, ORD–GRR) are included in these numbers.

45
Bring Snacks
WanderNerd Reliability Score
56%
Arrive within 15 minutes
38 min
Average arrival delay
0.8%
Cancelled
11 min
Median arrival delay

Based on 397 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 61% of the time, against 55% between 3–6 PM.

Sunday scaries are real for this one.

UA 590 arrived on time 60% of the time on Fridays. On Sundays: 49%.

Well behind the BWI–ORD route.

UA 590 arrived on time 56% of the time, versus 76% across the BWI–ORD route.

Well behind the United Airlines network.

UA 590 arrived on time 56% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon55%(58 flights)
  • Tue60%(57 flights)
  • Wed54%(54 flights)
  • Thu55%(53 flights)
  • Fri60%(60 flights)
  • Sat59%(56 flights)
  • Sun49%(55 flights)
On-time by departure window
  • 9 AM–12 PM—(1 flights)
  • 12–3 PM—(1 flights)
  • 3–6 PM55%(358 flights)
  • 6–9 PM61%(33 flights)
On-time trend by month
65%
May

Jun 40% → May 65% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202540%30
July 202537%30
August 202543%49
September 202573%33
October 202554%43
November 202555%29
December 202555%31
January 202667%30
February 202664%28
March 202660%30
April 202669%29
May 202665%31
Departures on time
73%
Diverted
0.3%
Flights flown
393
Months covered
12

Same route, other flights

Keep nerding

Based on 397 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.