Route on-time record
TUL to STL: most on-time flights and the best time to fly
Tulsa (Tulsa International Airport) to St Louis (St. Louis Lambert International Airport). 516 nonstop flights in Jun 2025 to May 2026, 89% arrived within 15 minutes and 1.0% were cancelled.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
TUL → STL
Tulsa to St Louis: 516 nonstop flights a year
On time (12 months)
89%
Cancelled
1.0%
avg delay 6 min
Best time to leave
Before 9 AM
97% on time vs 72% 6 to 9 PM
Most reliable airline
Southwest
89% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
None of this route’s recently flown flight numbers operated on that weekday. Try another date, or see the airlines and times below.
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines89%
516 flights · 89% on time as flown · 1.0% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM97%
276 flights · avg delay 4 min
- 3 to 6 PM87%
143 flights · avg delay 5 min
- 6 to 9 PM72%
97 flights · avg delay 16 min
Best day: Saturday (95%). Worst: Sunday (85%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft63%
- Airline (crew, maintenance, boarding)25%
- Severe weather8%
- Air traffic control and airport volume5%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
TUL to STL questions
- What time of day is best to fly TUL to STL?
- Before 9 AM: 97% of flights arrived on time, against 72% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from TUL to STL?
- Southwest, with a season-adjusted 89% chance of operating and arriving on time over 516 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on TUL to STL?
- May (79% on time); the best was February (96%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from TUL
- STL to TUL (return)
- TUL to DFW 78%
- TUL to DEN 79%
- TUL to ORD 76%
- TUL to ATL 86%
- TUL to PHX 82%
- TUL to IAH 84%
- TUL to DAL 86%
- TUL to LAS 83%
- TUL to CLT 85%
- TUL to HOU 86%
- TUL to LGA 79%
- TUL to SLC 92%
Live status: FAA delays and ground stops