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Route Reliability

Salt Lake City → Baltimore

SLC–BWI · 1,865 miles · Salt Lake City International Airport to Baltimore/Washington International Thurgood Marshall Airport

81
Pretty Reliable
WanderNerd Reliability Score
81%
Arrive within 15 minutes
4 min
Average arrival delay
1.4%
Cancelled
770
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.Southwest Airlines83%410 flights
  2. 2.Delta Air Lines78%360 flights

What the data says

Morning-you made the right choice.

SLC–BWI flights departing between 6–9 AM arrived on time 95% of the time, versus 79% between 3–6 PM.

Sunday scaries are real for this one.

SLC–BWI flights arrived on time 86% of the time on Wednesdays. On Sundays: 73%.

Southwest Airlines has a slight edge here.

Southwest Airlines arrived on time 83% of the time on this route; Delta Air Lines managed 78%.

Flights on this route

The breakdown

On-time by weekday
  • Mon77%(105 flights)
  • Tue84%(104 flights)
  • Wed86%(100 flights)
  • Thu81%(107 flights)
  • Fri76%(107 flights)
  • Sat86%(128 flights)
  • Sun73%(105 flights)
On-time by departure window
  • 3–6 AM94%(17 flights)
  • 6–9 AM95%(40 flights)
  • 9 AM–12 PM79%(77 flights)
  • 12–3 PM79%(165 flights)
  • 3–6 PM79%(95 flights)
  • 9 PM–12 AM80%(362 flights)
On-time trend by month
58%
May

Jun 77% → May 58% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%64
July 202573%64
August 202583%63
September 202585%60
October 202578%60
November 202589%56
December 202570%59
January 202686%66
February 202684%74
March 202691%68
April 202692%60
May 202658%62

Same trip, other airports

Keep nerding

Based on 770 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.