OnTimeRoutes
B

United Airlines IAD to DFW on-time performance

United Airlines nonstop flights from Washington to Dallas/Fort Worth · Aug 2025 – Jul 2026

On-time arrivals
80%
arrived < 15 min late
Cancelled
0.7%
6 flights
Avg arrival delay
17 min
82 min when late
Rank on route
#1 of 4
route average 77% on time

Key facts

  • United Airlines flights on IAD to DFW arrived on time 80% of the time in Aug 2025 – Jul 2026.
  • 0.7% were cancelled, and 9% arrived an hour or more late.
  • That ranks #1 of 4 airlines on this route, which averaged 77% on time overall.
  • The largest source of delay minutes was late-arriving aircraft (40%).

On-time trend by month

50%75%100%July 2025: 62.8% on time, 1.3% cancelledJul ’25August 2025: 80.8% on time, 1.3% cancelledAug ’25September 2025: 81.3% on time, 0.0% cancelledSep ’25October 2025: 86.1% on time, 0.0% cancelledOct ’25November 2025: 84.0% on time, 0.0% cancelledNov ’25December 2025: 74.6% on time, 0.0% cancelledDec ’25January 2026: 85.5% on time, 7.5% cancelledJan ’26February 2026: 87.0% on time, 0.0% cancelledFeb ’26March 2026: 82.9% on time, 0.0% cancelledMar ’26April 2026: 83.3% on time, 0.0% cancelledApr ’26May 2026: 84.3% on time, 0.0% cancelledMay ’26June 2026: 67.1% on time, 0.0% cancelledJun ’26July 2026: 67.4% on time, 0.0% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Late-arriving aircraft40%
  • Airline (crew, maintenance, cleaning, fueling)28%
  • Air traffic control & airport congestion26%
  • Extreme weather6%
  • Security0%

Other airlines on IAD to DFW

Full IAD to DFW comparison →
United Airlines on-time record across all routes →

923 United Airlines flights tracked on this route; 6 cancelled, 11 diverted.

Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.