BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
DSM→DCA

Des Moines, IA (DSM) to Washington, DC (DCA) flight delay odds

72.1% of 702 official scheduled DSM-to-DCA flights arrived on time; 14.1% arrived at least 30 minutes late and 6.4% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALHigher disruption
72.1%arrived on time
14.1%30+ min late
6.4%cancelled
702scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.4%all scheduled flights
120+ minutes late4.0%all scheduled flights
Diverted1.0%did not reach as scheduled
Average arrival+12.3 mincompleted flights

Which departure time was most reliable for DSM to DCA?

Among qualifying DSM-to-DCA departure window results, Early morning had the highest on-time rate: 78.8% of 345 flights. Afternoon was lowest at 65.4% across 353 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning34578.8%8.1%7.0%
Afternoon35365.4%20.1%5.9%

Which weekday was most reliable for DSM to DCA?

Among qualifying DSM-to-DCA weekday results, Thursday had the highest on-time rate: 80.0% of 100 flights. Sunday was lowest at 68.3% across 101 flights.

DayFlightsOn time30+ minCancelled
Monday10172.3%12.9%8.9%
Tuesday10369.9%15.5%6.8%
Wednesday10269.6%17.6%5.9%
Thursday10080.0%14.0%3.0%
Friday10072.0%13.0%5.0%
Saturday9572.6%11.6%5.3%
Sunday10168.3%13.9%9.9%

Which airline was most reliable for DSM to DCA?

Among qualifying DSM-to-DCA airline results, Envoy Air had the highest on-time rate: 74.6% of 59 flights. Republic Airways was lowest at 71.2% across 257 flights.

AirlineFlightsOn time30+ minCancelled
PSA Airlines38572.2%14.0%6.8%
Republic Airways25771.2%14.0%5.8%
Envoy Air5974.6%15.3%6.8%
American Airlines1100.0%0.0%0.0%

Which month was most reliable for DSM to DCA?

Among qualifying DSM-to-DCA month results, April 2026 had the highest on-time rate: 85.0% of 60 flights. July 2025 was lowest at 59.0% across 61 flights.

MonthFlightsOn time30+ minCancelled
July 20256159.0%11.5%18.0%
August 20256275.8%12.9%3.2%
September 20256070.0%13.3%0.0%
October 20256277.4%16.1%0.0%
November 20255578.2%14.5%3.6%
December 20254768.1%14.9%10.6%
January 20265673.2%12.5%8.9%
February 20265675.0%12.5%7.1%
March 20266259.7%24.2%8.1%
April 20266085.0%10.0%1.7%
May 20266178.7%13.1%0.0%
June 20266065.0%13.3%16.7%

What drove DSM to DCA delay minutes?

Late aircraft was the largest recorded DSM-to-DCA delay category, accounting for 33.7% of 15,004 BTS-attributed delay minutes during July 2025–June 2026.

Airline30.2%
Late aircraft33.7%
National airspace15.8%
Weather20.0%
Security0.2%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.