DAL to STL flight delays & on-time performance
Nonstop flights from Dallas Love Field to St. Louis Lambert International Airport · 546 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at DAL or STL right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Dallas (DAL) to St. Louis (STL) arrived on time 76% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.4% were cancelled, and 8% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 6am did best (93% on time); around 9pm did worst (38%).
- Tuesday was the most reliable day to fly (86% on time) and Sunday the least (71%).
- The largest source of delay minutes was late-arriving aircraft (61%).
Which airline is most on time from DAL to STL?
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 |
|---|---|---|---|---|---|
| Southwest Airlines | 76% | 1.4% | 15 min | 7.9% | 1,939 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am93%145 flights
- 7am86%173 flights
- 8am92%123 flights
- 9am83%95 flights
- 10am85%64 flights
- 11am82%195 flights
- 12pm90%98 flights
- 1pm66%117 flights
- 2pm75%36 flights
- 3pm82%115 flights
- 4pm57%47 flights
- 5pm64%171 flights
- 6pm82%125 flights
- 7pm76%128 flights
- 8pm57%144 flights
- 9pm38%76 flights
- 10pm62%87 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday73%2.4% cancelled
- Tuesday86%0.4% cancelled
- Wednesday82%0.0% cancelled
- Thursday72%0.7% cancelled
- Friday73%1.4% cancelled
- Saturday77%0.9% cancelled
- Sunday71%3.8% 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 aircraft61%
- Airline (crew, maintenance, cleaning, fueling)27%
- Air traffic control & airport congestion8%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather78%
- Airline (crew, maintenance, cleaning, fueling)19%
- Air traffic control & airport congestion4%
- Security0%
DAL to STL: common questions
- How often are DAL to STL flights on time?
- 76% 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 Dallas to St. Louis cancelled?
- 1.4% of scheduled flights were cancelled (27 of 1,939).
- How long are typical delays?
- Across all flights the average arrival delay was 15 min (early arrivals count as zero). Flights that were late arrived 60 min behind schedule on average, and 7.9% of flights were an hour or more late.
- How long is taxi time at DAL?
- Flights on this route spent 13 min taxiing from the gate to takeoff on average.
Related routes
Return trip: STL to DAL — 76% on time
More flights from Dallas
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: DAL → STL, nonstop flights by US airlines that report to the DOT. How we calculate this.