Skip to content
WanderNerd
Check a flight

Route Reliability

Raleigh–Durham → Baltimore

RDU–BWI · 256 miles · Raleigh–Durham International Airport to Baltimore/Washington International Thurgood Marshall Airport

84
Pretty Reliable
WanderNerd Reliability Score
86%
Arrive within 15 minutes
1 min
Average arrival delay
2.4%
Cancelled
1,811
Flights in the data

Data through May 2026.

Airlines on this route

  • Southwest Airlines86% on time · 1,790 flights
  • Spirit Airlines81% on time · 21 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

Morning flights do better here.

RDU–BWI flights departing between 3–6 AM arrived on time 97% of the time, versus 70% between 6–9 PM.

Sunday scaries are real for this one.

RDU–BWI flights arrived on time 93% of the time on Saturdays and just 75% on Sundays. That gap is worth planning around.

Flights on this route

The breakdown

On-time by weekday
  • Mon84%(265 flights)
  • Tue88%(253 flights)
  • Wed89%(243 flights)
  • Thu84%(273 flights)
  • Fri90%(269 flights)
  • Sat93%(196 flights)
  • Sun75%(267 flights)
On-time by departure window
  • 3–6 AM97%(94 flights)
  • 6–9 AM95%(356 flights)
  • 9 AM–12 PM94%(294 flights)
  • 12–3 PM91%(307 flights)
  • 3–6 PM79%(337 flights)
  • 6–9 PM70%(378 flights)
On-time trend by month
87%
May

Jun 78% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202578%162
July 202575%161
August 202588%147
September 202592%140
October 202582%166
November 202594%154
December 202586%159
January 202689%122
February 202690%115
March 202681%145
April 202693%146
May 202687%149

Same trip, other airports

Keep nerding

Based on 1,811 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.