ORD to STT flight delays & on-time performance
Nonstop flights from Chicago O'Hare International Airport to Cyril E. King Airport · 2,116 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ORD or STT right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Chicago (ORD) to Charlotte Amalie (STT) arrived on time 70% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.2% were cancelled, and 10% arrived an hour or more late.
- American Airlines was the most punctual airline here (70% on time); United Airlines was the least (70%).
- Departures scheduled around 8am did best (73% on time); around 9am did worst (68%).
- Wednesday was the most reliable day to fly (86% on time) and Friday the least (47%).
- The largest source of delay minutes was air traffic control & airport congestion (37%).
Which airline is most on time from ORD to STT?
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 |
|---|---|---|---|---|---|
| American Airlines | 70% | 1.0% | 22 min | 16.3% | 100 |
| United Airlines | 70% | 1.3% | 16 min | 5.9% | 155 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am73%113 flights
- 9am68%135 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday63%0.0% cancelled
- Tuesday80%0.0% cancelled
- Wednesday86%0.0% cancelled
- Thursday80%0.0% cancelled
- Friday47%0.0% cancelled
- Saturday72%4.7% cancelled
- Sunday66%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Air traffic control & airport congestion37%
- Airline (crew, maintenance, cleaning, fueling)32%
- Late-arriving aircraft23%
- Extreme weather7%
- Security1%
Why flights are cancelled
Share of cancellations by reason.
- Air traffic control & airport congestion67%
- Extreme weather33%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
ORD to STT: common questions
- How often are ORD to STT flights on time?
- 70% 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 Chicago to Charlotte Amalie cancelled?
- 1.2% of scheduled flights were cancelled (3 of 255).
- How long are typical delays?
- Across all flights the average arrival delay was 18 min (early arrivals count as zero). Flights that were late arrived 57 min behind schedule on average, and 10.0% of flights were an hour or more late.
- How long is taxi time at ORD?
- Flights on this route spent 31 min taxiing from the gate to takeoff on average.
Related routes
Return trip: STT to ORD — 71% on time
More flights from Chicago
More flights to Charlotte Amalie
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ORD → STT, nonstop flights by US airlines that report to the DOT. How we calculate this.