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Route Reliability

Atlanta → Baltimore

ATL–BWI · 577 miles · Hartsfield–Jackson Atlanta International Airport to Baltimore/Washington International Thurgood Marshall Airport

71
Usually Fine
WanderNerd Reliability Score
75%
Arrive within 15 minutes
13 min
Average arrival delay
2.2%
Cancelled
5,431
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.Southwest Airlines79%1,577 flights
  2. 2.Spirit Airlines77%167 flights
  3. 3.Delta Air Lines76%2,839 flights
  4. 4.Frontier Airlines61%848 flights

What the data says

Morning flights do better here.

ATL–BWI flights departing between 6–9 AM arrived on time 91% of the time, versus 63% between 9 PM–12 AM.

Sunday scaries are real for this one.

ATL–BWI flights arrived on time 83% of the time on Wednesdays and just 67% on Sundays. That gap is worth planning around.

Southwest Airlines has a clear lead on this route.

Southwest Airlines arrived on time 79% of the time on this route; Frontier Airlines managed 61%.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon71%(805 flights)
  • Tue77%(740 flights)
  • Wed83%(734 flights)
  • Thu76%(786 flights)
  • Fri75%(799 flights)
  • Sat74%(618 flights)
  • Sun67%(816 flights)
On-time by departure window
  • 3–6 AM87%(46 flights)
  • 6–9 AM91%(885 flights)
  • 9 AM–12 PM83%(894 flights)
  • 12–3 PM77%(892 flights)
  • 3–6 PM68%(996 flights)
  • 6–9 PM64%(817 flights)
  • 9 PM–12 AM63%(768 flights)
On-time trend by month
76%
May

Jun 56% → May 76% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202556%475
July 202562%486
August 202575%483
September 202589%463
October 202581%500
November 202580%461
December 202570%422
January 202677%355
February 202678%338
March 202670%396
April 202683%436
May 202676%483

Same trip, other airports

Keep nerding

Based on 5,431 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.