Carrier route record
OORDU→ORD
SkyWest Airlines · Raleigh to Chicago
- 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 RDU to ORD lands a B−, 4 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 about 3.3 hours on average. That rests on 154 flights. The strongest carrier on the route with a full sample, American Airlines, flew 518 at 80.6% on time.
The US average over the same twelve months is 77.3%, so there is little to separate SkyWest on RDU to ORD from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
81.1%
Arrivals under 15 minutes late, of 148 completed flights
Avg delay
195 min
Across delayed arrivals only, not all flights
Cancelled
3.25%
National rate is 1.89%
Whole route
74.3%
Every carrier on RDU to ORD, 3,740 flights
These figures cover 154 flights between September 2025 and August 2026. Beyond the headline rate, 8.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
SkyWest against every carrier on RDU to ORD
SkyWest flew 154 of the 3,740 flights on RDU to ORD, about 4% of it. Its 81.1% on time is 7 points better than the route as a whole, which runs 74.3%. Ranked by on-time rate it is first of seven carriers on the route, where the range runs from SkyWest at 81.1% 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. American Airlines arrives on time 80.6% of the time; Republic Airways manages 71.6%. Sample sizes sit next to every figure, because a two-point gap across 1,155 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines (this page)thin sample | 154 | 81.1% | 195 min | 3.25% | B− |
| American Airlines | 518 | 80.6% | 153 min | 3.28% | B− |
| United Airlines | 1,292 | 75.1% | 94 min | 1.70% | B |
| Envoy Air | 521 | 73.0% | 87 min | 1.92% | C |
| Republic Airways | 1,155 | 71.6% | 80 min | 3.98% | C− |
| Frontier Airlinesthin sample | 98 | 58.1% | 155 min | 5.10% | D− |
| PSA Airlinesthin sample | 2 | 50.0% | 31 min | 0.00% | F+ |
Republic Airways cancels 4.0% 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.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
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.
There are not enough flights in each departure window to split SkyWest's RDU to ORD record by time of day without the percentages moving on noise. The headline rate of 81.1% is the reliable figure here.
Across the year
SkyWest on RDU to ORD through the year
- Apr–Jun 202667 flights77.3%
- Jul–Sep 202687 flights84.1%
Scale runs 70% to 90%.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 81.1% on time across 154 flights.
Split by quarter, SkyWest on RDU to ORD 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 81.1% annual figure is the one to use.
Arrival by arrival
How late SkyWest on RDU to ORD runs when it is late
SkyWest on RDU to ORD often beats the schedule: 38 of 148 completed flights, 26%, arrived 15 minutes or more early. The 28 late arrivals split 11 under half an hour, 5 between 30 and 60 minutes, and 12 an hour or more.
- 15+ min early38 flights25.7%
- Within 15 min82 flights55.4%
- 15–29 min late11 flights7.4%
- 30–59 min late5 flights3.4%
- 1–2 hours late2 flights1.4%
- 2+ hours late10 flights6.8%
Scale runs 0% to 100%.
Share of 148 completed flights by arrival against schedule.
3 of 24 late departures made up the time and arrived on time, 13% of them. 7 flights left on time and still arrived late.
The worst days
Worst days for SkyWest on RDU to ORD
The latest arrival of the period was on 27 July 2026, 22 hours 9 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across July, June and August, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 27 July 2026 | 22 hours 9 minutes | National Airspace System |
| 25 July 2026 | 13 hours 5 minutes | Carrier |
| 11 June 2026 | 8 hours 42 minutes | National Airspace System |
| 9 August 2026 | 6 hours 51 minutes | Extreme weather |
| 27 June 2026 | 6 hours 49 minutes | Carrier |
Delay causes
Why SkyWest runs late on this route
National Airspace System accounts for 49% of the 5,472 delay minutes carriers reported here, and the remaining four split what is left.
- 49%National Airspace System
- 28%Carrier
- 12%Late-arriving aircraft
- 11%Extreme weather
Extreme weather accounts for 11% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 1.9 times the usual weather exposure. The split is drawn from 5,472 reported delay minutes.
49% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 2,701 minutes out of 5,472, against a national NAS share of 21%.
Cancellations run at 3.25%, against 1.89% nationally. That is about one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and stage length
What a delay here costs
8.1% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 3.3 hours, which a normal layover absorbs.
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 80.1% 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 RDU to ORD
Put together: the delay figures matter less here than the 3.25% cancellation rate. A late arrival costs you about 3.3 hours; a cancelled flight costs you the day. Book the 11am–2pm departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 148 completed flights over 12 months sit behind that.
Related
Where to go next
- RDU to ORD, every carrier
- SkyWest on ORD to RDU, the return leg
- American Airlines on RDU to ORD80.6%
- United Airlines on RDU to ORD75.1%
- Envoy Air on RDU to ORD73.0%
- Republic Airways on RDU to ORD71.6%
- SkyWest Airlines network-wide record
- Raleigh-Durham International (RDU) delay statistics
- Chicago O'Hare International (ORD) delay statistics
- The US routes with the most cancellations
- What a cancellation rate actually tells you (and what it hides)
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.