Carrier route record
OOORD→RDU
SkyWest Airlines · Chicago to Raleigh
- Flights
- 154
- Period
- September 2025 to August 2026
- Share of route
- 4%
- Carriers
- 7
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on ORD to RDU lands a B, 3 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by roughly 50 minutes on average. That rests on 154 flights. The strongest carrier on the route with a full sample, Envoy Air, flew 519 at 77.8% on time.
The US average over the same twelve months is 77.3%, so there is little to separate SkyWest on ORD to RDU from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
80.1%
Arrivals under 15 minutes late, of 151 completed flights
Avg delay
52 min
Across delayed arrivals only, not all flights
Cancelled
1.95%
National rate is 1.89%
Whole route
72.9%
Every carrier on ORD to RDU, 3,742 flights
These figures cover 154 flights between September 2025 and August 2026. The median arrival is 3 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Carrier by carrier
SkyWest against every carrier on ORD to RDU
SkyWest flew 154 of the 3,742 flights on ORD to RDU, about 4% of it. Its 80.1% on time is 7 points better than the route as a whole, which runs 72.9%. Ranked by on-time rate it is first of seven carriers on the route, where the range runs from SkyWest at 80.1% to PSA at 50.0%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The choice of carrier is not cosmetic here. Envoy Air arrives on time 77.8% of the time; American Airlines manages 56.5%. Sample sizes sit next to every figure, because a two-point gap across 520 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines (this page)thin sample | 154 | 80.1% | 52 min | 1.95% | B |
| Envoy Air | 519 | 77.8% | 53 min | 1.93% | B |
| United Airlines | 1,296 | 75.6% | 77 min | 1.16% | B |
| Republic Airways | 1,153 | 75.0% | 72 min | 3.21% | B− |
| Frontier Airlinesthin sample | 98 | 62.8% | 142 min | 4.08% | D− |
| American Airlines | 520 | 56.5% | 113 min | 3.27% | D− |
| PSA Airlinesthin sample | 2 | 50.0% | 85 min | 0.00% | F+ |
American Airlines cancels 3.3% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
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Departure window
When SkyWest runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 154 flights.
- 5am–8am79 flights80.8%
- 8am–11am69 flights80.9%
- 11am–2pm—
- 2pm–5pm5 flights—
- 5pm–8pm—
- 8pm–5am1 flights—
Scale runs 70% to 85%. Rows with fewer than 30 flights show a dash.
The 8am–11am window is the strongest at 80.9% on time. The full set of windows spans half a point.
Across the year
SkyWest on ORD to RDU through the year
- Apr–Jun 202667 flights79.1%
- Jul–Sep 202687 flights81.0%
Scale runs 70% to 85%.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 80.1% on time across 154 flights.
Split by quarter, SkyWest on ORD to RDU logged 67 flights in Apr–Jun 2026 and 87 flights in Jul–Sep 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 80.1% annual figure is the one to use.
Arrival by arrival
How late SkyWest on ORD to RDU runs when it is late
Most of the lateness is short. 15 of the 30 late arrivals were under half an hour behind, and 5 reached an hour or more.
- 15+ min early29 flights19.2%
- Within 15 min92 flights60.9%
- 15–29 min late15 flights9.9%
- 30–59 min late10 flights6.6%
- 1–2 hours late3 flights2.0%
- 2+ hours late2 flights1.3%
Scale runs 0% to 100%.
Share of 151 completed flights by arrival against schedule.
4 of 21 late departures made up the time and arrived on time, 19% of them. In the other direction, 13 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at RDU.
The worst days
Worst days for SkyWest on ORD to RDU
The latest arrival of the period was on 16 June 2026, 5 hours 21 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 16 June 2026 | 5 hours 21 minutes | Carrier |
| 9 August 2026 | 2 hours 34 minutes | Carrier |
| 8 June 2026 | 1 hour 57 minutes | Carrier |
| 31 May 2026 | 1 hour 51 minutes | Carrier |
| 18 July 2026 | 1 hour 45 minutes | Late-arriving aircraft |
Delay causes
Why SkyWest runs late on this route
Carrier accounts for 80% of the 1,551 delay minutes carriers reported here, and the remaining four split what is left.
- 80%Carrier
- 13%Late-arriving aircraft
- 7%National Airspace System
- 0%Extreme weather
The largest share of delay minutes, 80%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,243 of the 1,551 delay minutes reported here. The split is drawn from 1,551 reported delay minutes.
Cancellations sit at 1.95% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here costs
Badly late arrivals are rare here: only 3.3% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The 646 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The return leg runs 81.1% on time across 154 flights, within about a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 154 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking SkyWest on ORD to RDU
Put together: treat all of this as provisional. 154 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 80.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 151 completed flights over 12 months sit behind that.
Related
Where to go next
- ORD to RDU, every carrier
- SkyWest on RDU to ORD, the return leg
- Envoy Air on ORD to RDU77.8%
- United Airlines on ORD to RDU75.6%
- Republic Airways on ORD to RDU75.0%
- American Airlines on ORD to RDU56.5%
- SkyWest Airlines network-wide record
- Chicago O'Hare International (ORD) delay statistics
- Raleigh-Durham International (RDU) delay statistics
- Same route, different airline: where the carrier you pick matters most
- Do budget airlines really get delayed more? The numbers
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.