STL to DFW flight delays & on-time performance
Nonstop flights from St. Louis Lambert International Airport to Dallas Fort Worth International Airport · 550 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at STL or DFW right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from St. Louis (STL) to Dallas/Fort Worth (DFW) arrived on time 75% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 3.3% were cancelled, and 12% arrived an hour or more late.
- Envoy Air was the most punctual airline here (83% on time); American Airlines was the least (75%).
- Departures scheduled around 5am did best (93% on time); around 7pm did worst (51%).
- Tuesday was the most reliable day to fly (82% on time) and Monday the least (68%).
- The largest source of delay minutes was late-arriving aircraft (47%).
Which airline is most on time from STL to DFW?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Envoy AirRegional airline operating American Eagle flights. | 83% | 3.4% | 14 min | 6.3% | 264 |
| American Airlines | 75% | 3.3% | 30 min | 12.8% | 1,868 |
| Frontier Airlines | 71% | 2.1% | 42 min | 10.9% | 95 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 68% | 1.4% | 30 min | 15.9% | 70 |
| PSA AirlinesRegional airline operating American Eagle flights. | 63% | 4.8% | 43 min | 17.5% | 84 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am93%321 flights
- 7am82%364 flights
- 8am79%134 flights
- 9am81%348 flights
- 10am77%67 flights
- 11am74%151 flights
- 12pm82%141 flights
- 1pm59%113 flights
- 3pm74%201 flights
- 4pm66%65 flights
- 5pm52%188 flights
- 6pm63%137 flights
- 7pm51%122 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday68%4.3% cancelled
- Tuesday82%3.1% cancelled
- Wednesday78%0.6% cancelled
- Thursday77%2.2% cancelled
- Friday77%2.6% cancelled
- Saturday75%4.5% cancelled
- Sunday70%5.2% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft47%
- Airline (crew, maintenance, cleaning, fueling)29%
- Air traffic control & airport congestion19%
- Extreme weather5%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather86%
- Airline (crew, maintenance, cleaning, fueling)10%
- Air traffic control & airport congestion4%
- Security0%
STL to DFW: common questions
- How often are STL to DFW flights on time?
- 75% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from St. Louis to Dallas/Fort Worth cancelled?
- 3.3% of scheduled flights were cancelled (78 of 2,381).
- How long are typical delays?
- Across all flights the average arrival delay was 29 min (early arrivals count as zero). Flights that were late arrived 115 min behind schedule on average, and 12.2% of flights were an hour or more late.
- How long is taxi time at STL?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: DFW to STL — 68% on time
More flights from St. Louis
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: STL → DFW, nonstop flights by US airlines that report to the DOT. How we calculate this.