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Route Reliability

Orlando → St. Louis

MCO–STL · 882 miles · Orlando International Airport to St. Louis Lambert International Airport

81
Pretty Reliable
WanderNerd Reliability Score
77%
Arrive within 15 minutes
9 min
Average arrival delay
0.8%
Cancelled
2,483
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.Southwest Airlines78%2,082 flights
  2. 2.Frontier Airlines74%391 flights

Not enough history to rank: Spirit Airlines (10 flights). We rank airlines only after 100 flights on the route.

What the data says

Morning-you made the right choice.

MCO–STL flights departing between 6–9 AM arrived on time 96% of the time, versus 63% between 9 PM–12 AM.

Sunday scaries are real for this one.

MCO–STL flights arrived on time 86% of the time on Wednesdays and just 69% on Sundays. That gap is worth planning around.

Southwest Airlines has a slight edge here.

Southwest Airlines arrived on time 78% of the time on this route; Frontier Airlines managed 74%.

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
  • Mon73%(368 flights)
  • Tue85%(304 flights)
  • Wed86%(310 flights)
  • Thu80%(343 flights)
  • Fri79%(368 flights)
  • Sat72%(384 flights)
  • Sun69%(379 flights)
On-time by departure window
  • 3–6 AM90%(20 flights)
  • 6–9 AM96%(483 flights)
  • 9 AM–12 PM87%(381 flights)
  • 12–3 PM81%(370 flights)
  • 3–6 PM66%(356 flights)
  • 6–9 PM66%(466 flights)
  • 9 PM–12 AM63%(380 flights)
On-time trend by month
80%
May

Jun 68% → May 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%202
July 202574%204
August 202569%181
September 202589%156
October 202573%195
November 202584%201
December 202574%219
January 202682%213
February 202680%194
March 202675%259
April 202681%221
May 202680%211

Keep nerding

Based on 2,483 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.