ORD to STT flight delays
Chicago, IL (ORD) Charlotte Amalie, VI (STT) · 2,116 miles
381 flights · July 2024 – July 2026 · US Bureau of Transportation Statistics
75.47%
Arrived on time
Within 15 minutes of schedule
1.05%
Cancelled
Share of scheduled flights
57 min
When late, late by
Average across delayed arrivals
15 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In December it ran 36.8 points more punctual than in March — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
Which airline you fly changes the odds here. United Airlines arrived on time 6.9 points more often than American Airlines over the same period on the same route — same airports, same weather, same air traffic control. A gap that survives all of that is about how the two airlines are run.
The route has been getting worse. The later months run 14.2 points less punctual than the earlier ones. A drift of that size is rarely weather; it is more often an airline adding frequencies faster than the airports can absorb them.
This is a thin route — 381 flights across the whole period. On a route this infrequent a cancellation is far more costly than the rate suggests, because the next departure may not be the same day.
Which airline should you fly on this route?
Over July 2024 – July 2026, United Airlines arrived on time most often on ORD to STT. American Airlines was late most often. Flights ran closest to schedule in October and worst in July.
Every airline on ORD to STT
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| United Airlines | 263 | 77.61% | 1.14% | 50 min | C |
| American Airlines | 118 | 70.69% | 0.85% | 68 min | D |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
STT to ORD Charlotte Amalie back to Chicago 71.47% on time DOther routes from Chicago
Common questions
Are flights from Chicago to Charlotte Amalie usually delayed?
75.47% of flights on the ORD to STT route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airline is most on time from Chicago to Charlotte Amalie?
United Airlines, at 77.61% on time across 263 flights. The least punctual on the route was American Airlines at 70.69%.
How often are ORD to STT flights cancelled?
1.05% of scheduled flights did not operate — about 11 in every thousand. That is in the normal range.
What is the best month to fly Chicago to Charlotte Amalie?
December, when 90.9% of flights arrived on time. The worst was March at 54.1%.
When ORD to STT flights are late, how late are they?
About 57 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on ORD to STT during July 2024 – July 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →