Portland (PDX) to St. Louis (STL): On-Time Performance
Data through July 2026
Portland (PDX) to St. Louis (STL) is a thinner route than most in this dataset — 114 departures over the past year, roughly 2 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 82% arrived on time.
- On-time
- 82%
- arrived <15 min late
- Avg delay
- 7 min
- completed flights
- Cancelled
- 0.6%
- Flights/day
- 0.31
- last 12 months
- Duration
- 3h 47m
- scheduled
- Distance
- 1,708 mi
Best airline from PDX to STL
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlinesmost reliable | 84% | 7 min | 0.0% | 101 |
| Alaska Airlines | 80% | 7 min | 1.3% | 80 |
Monthly on-time trend
Best time to fly from PDX to STL
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Mondaybest | 95% | 3 min |
| Tuesday | 73% | 8 min |
| Wednesday | 82% | 7 min |
| Thursday | 85% | 6 min |
| Friday | 85% | 8 min |
| Saturday | 82% | 6 min |
| Sunday | 78% | 8 min |
Frequently asked questions
- How often are flights from PDX to STL delayed?
- 18% of PDX–STL 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 7 minutes.
- Which airline is most reliable from PDX to STL?
- Southwest Airlines has the best on-time record on this route at 84%, based on 101 flights. 2 airlines flew PDX–STL frequently enough to compare in this period.
- How long is the flight from PDX to STL?
- The scheduled PDX–STL flight time averages 3h 47m over 1,708 miles. Actual arrival times vary — flights on this route land 15+ minutes late 18% of the time.
- How often are PDX to STL flights cancelled?
- 0.6% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
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Based on 181 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.