St. Louis (STL) to Dallas/Fort Worth (DFW): On-Time Performance
Data through July 2026
Delays are only half the story on STL–DFW: 3.1% of its scheduled flights were outright cancelled, well above the US norm, so a backup plan matters more here than on most routes. When flights do go, 74% land on time, below the national average of 78%. Envoy Air has been the safer pick, arriving on time 78% of the time.
- On-time
- 74%
- arrived <15 min late
- Avg delay
- 28 min
- completed flights
- Cancelled
- 3.1%
- Flights/day
- 6.5
- last 12 months
- Duration
- 1h 59m
- scheduled
- Distance
- 550 mi
Best airline from STL to DFW
5 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Envoy Airmost reliable | 78% | 16 min | 3.0% | 729 |
| American Airlines | 75% | 28 min | 3.2% | 3,863 |
| PSA Airlines | 66% | 44 min | 3.5% | 115 |
| Frontier Airlines | 65% | 39 min | 2.4% | 166 |
| SkyWest Airlines | 53% | 59 min | 2.7% | 146 |
Monthly on-time trend
Best time to fly from STL to DFW
Aim for departures around 5 a.m. (90% on-time); avoid 7 p.m. departures (51%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 70% | 32 min |
| Tuesdaybest | 81% | 27 min |
| Wednesday | 74% | 27 min |
| Thursday | 75% | 23 min |
| Friday | 74% | 25 min |
| Saturday | 76% | 26 min |
| Sunday | 71% | 35 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft43%
- Airline operations32%
- National airspace system20%
- Weather6%
Frequently asked questions
- How often are flights from STL to DFW delayed?
- 26% of STL–DFW flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 28 minutes.
- Which airline is most reliable from STL to DFW?
- Envoy Air has the best on-time record on this route at 78%, based on 729 flights. 5 airlines flew STL–DFW frequently enough to compare in this period.
- What is the best time of day to fly from STL to DFW?
- Departures around 5 a.m. have the best record (90% on-time), while departures around 7 p.m. have the worst (51%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from STL to DFW?
- The scheduled STL–DFW flight time averages 1h 59m over 550 miles. Actual arrival times vary — flights on this route land 15+ minutes late 26% of the time.
- How often are STL to DFW flights cancelled?
- 3.1% of scheduled flights on this route were cancelled between 2024-07 and 2026-07 — several times the typical US rate, so consider earlier departures or backup options.
- What is the worst month to fly from STL to DFW?
- June 2025 was the roughest month in this dataset, with only 63% of arrivals on time. The best was September 2024 at 85%. If your dates are flexible, that 22-point gap is worth planning around.
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Based on 5,019 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.