Route on-time record
OMA to STL: most on-time flights and the best time to fly
Omaha (Eppley Airfield) to St Louis (St. Louis Lambert International Airport). 825 nonstop flights in Jun 2025 to May 2026, 89% arrived within 15 minutes and 0.5% were cancelled. The most reliable flight number was Southwest 3642 at 8:20 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
OMA → STL
Omaha to St Louis: 825 nonstop flights a year
On time (12 months)
89%
Cancelled
0.5%
avg delay 8 min
Best time to leave
Before 9 AM
95% on time vs 74% 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.
#1 · Southwest 3642
8:20 AM → 9:35 AM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
95%
chance on time
- On time (history)
- 96%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 96% of the time (54 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 95% on time; 6 to 9 PM: 74%).
- Short track record (54 flights), so its score leans on the airline's record at this hour.
Limited track record · 54 flights
Find Southwest 3642 fares Opens this date on Aviasales#2 · Southwest 2862
8:10 AM → 9:30 AM1h 20m nonstop
Local times, typical schedule. Last flown 2026-04-06.
93%
chance on time
- On time (history)
- 94%
- Cancelled
- 3.0%
- Avg arrival delay
- 3 min
- Arrived on time 94% of the time (32 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (1 of 33).
- Leaves in this route's most on-time window (Before 9 AM: 95% on time; 6 to 9 PM: 74%).
- Short track record (32 flights), so its score leans on the airline's record at this hour.
Limited track record · 32 flights
Find Southwest 2862 fares Opens this date on Aviasales#3 · Southwest 3312
7:55 AM → 9:15 AM1h 20m nonstop
Local times, typical schedule. Last flown 2026-04-01.
89%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 88% of the time (8 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 95% on time; 6 to 9 PM: 74%).
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 3312 fares Opens this date on Aviasales#4 · Southwest 3643
5:40 PM → 6:55 PM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 3012; its record covers all of them.
78%
chance on time
- On time (history)
- 73%
- Cancelled
- 0.0%
- Avg arrival delay
- 21 min
- Arrived on time 73% of the time (74 flights, Jun 2025 to May 2026).
- Never cancelled in 74 scheduled flights.
- 59% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 74 flights
Find Southwest 3643 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines89%
825 flights · 89% on time as flown · 0.5% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM95%
364 flights · avg delay 3 min
- Noon to 3 PM94%
110 flights · avg delay 3 min
- 3 to 6 PM83%
261 flights · avg delay 11 min
- 6 to 9 PM74%
72 flights · avg delay 26 min
Best day: Saturday (91%). Worst: Sunday (84%).
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 aircraft68%
- Airline (crew, maintenance, boarding)20%
- Air traffic control and airport volume9%
- Severe weather3%
- Security1%
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
OMA to STL questions
- What time of day is best to fly OMA to STL?
- Before 9 AM: 95% of flights arrived on time, against 74% 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 OMA to STL?
- Southwest, with a season-adjusted 89% chance of operating and arriving on time over 825 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 OMA to STL?
- June (78% on time); the best was September (94%), 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 OMA
- STL to OMA (return)
- OMA to DEN 76%
- OMA to ORD 74%
- OMA to PHX 83%
- OMA to ATL 87%
- OMA to DFW 76%
- OMA to MSP 80%
- OMA to MDW 81%
- OMA to DTW 80%
- OMA to LAS 85%
- OMA to CLT 84%
- OMA to IAH 88%
- OMA to SLC 92%
Live status: FAA delays and ground stops