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Route Reliability

Chicago → Washington

MDW–DCA · 601 miles · Chicago Midway International Airport to Ronald Reagan Washington National Airport

67
Usually Fine
WanderNerd Reliability Score
71%
Arrive within 15 minutes
12 min
Average arrival delay
2.1%
Cancelled
2,104
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 71% of the time across 2,104 flights. No comparison to make.

What the data says

Morning-you made the right choice.

MDW–DCA flights departing between 3–6 AM arrived on time 94% of the time, versus 44% between 9 PM–12 AM.

Sunday scaries are real for this one.

MDW–DCA flights arrived on time 75% of the time on Tuesdays. On Sundays: 65%.

Slipping a little lately.

MDW–DCA flights arrived on time 66% of the time over the last three months in the data, compared with 73% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon70%(296 flights)
  • Tue75%(303 flights)
  • Wed74%(307 flights)
  • Thu69%(302 flights)
  • Fri68%(299 flights)
  • Sat73%(244 flights)
  • Sun65%(300 flights)
On-time by departure window
  • 3–6 AM94%(89 flights)
  • 6–9 AM90%(358 flights)
  • 9 AM–12 PM80%(339 flights)
  • 12–3 PM65%(432 flights)
  • 3–6 PM62%(450 flights)
  • 6–9 PM56%(358 flights)
  • 9 PM–12 AM44%(25 flights)
On-time trend by month
63%
May

Jun 69% → May 63% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202569%172
July 202566%166
August 202576%179
September 202580%176
October 202571%181
November 202569%159
December 202568%173
January 202677%168
February 202674%155
March 202662%174
April 202672%172
May 202663%176

Same trip, other airports

Keep nerding

Based on 2,104 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.