Airport month record
RDUJUN
Raleigh-Durham International in June 2026
- Departures
- 4,615
- Month
- June 2026
- National, same month
- 74.3%
- Carriers
- 11
Historical statistics for June 2026, not live status or a forecast for this year’s June. For today’s conditions at RDU, see live FAA status.
RDU in June lands a B, 3 points better than the national rate of 74.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 4,615 flights, of which Delta Air Lines flew 992 at 87.8% on time.
Delta Air Lines is the most reliable of the six carriers covered here at 87.8% on time across 992 flights.
Key figures
On time
77.2%
Arrivals under 15 minutes late, of 4,510 completed departures
Avg delay
84 min
Across delayed arrivals only, not all flights
Cancelled
2.08%
Nationally in June: 1.65%
Whole year
79.0%
RDU across all twelve months
These figures cover 4,615 departures from Raleigh-Durham International in June 2026. On time means an arrival less than 15 minutes after the scheduled gate time, the DOT's threshold, and the national comparison uses every US departure in the same month rather than the whole year.
Against the year
June next to RDU's other months
Against RDU's own year, June ran 2 points worse than the twelve-month rate of 79.0%, which makes it number ten of twelve months, best first.
| Month | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| July 2025 | 4,907 | 71.6% | 97 min | 3.81% | C− |
| August 2025 | 4,640 | 78.7% | 82 min | 1.34% | B |
| September 2025 | 4,484 | 84.6% | 81 min | 0.51% | B+ |
| October 2025 | 4,929 | 79.0% | 67 min | 0.63% | B+ |
| November 2025 | 4,796 | 80.4% | 80 min | 2.04% | B |
| December 2025 | 4,803 | 73.5% | 76 min | 1.71% | C |
| January 2026 | 4,163 | 81.0% | 76 min | 8.17% | B− |
| February 2026 | 3,954 | 82.1% | 76 min | 3.69% | B− |
| March 2026 | 4,658 | 77.2% | 83 min | 2.81% | B |
| April 2026 | 4,748 | 82.4% | 70 min | 0.63% | B+ |
| May 2026 | 4,884 | 81.4% | 67 min | 0.86% | B+ |
| June 2026 (this page) | 4,615 | 77.2% | 84 min | 2.08% | B |
Departure window
The best time of day to leave RDU in June
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 29 points, against 17 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am1,204 flights89.8%
- 8am–11am749 flights88.7%
- 11am–2pm831 flights79.1%
- 2pm–5pm561 flights65.6%
- 5pm–8pm1,024 flights62.3%
- 8pm–5am246 flights61.3%
Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 61.3% on time, against 89.8% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5am–8am window is the busiest, with 1,204 flights scheduled in it.
Across the week, Wednesday is the strongest day at 82.5% on time and Saturday the weakest at 71.8%. 11 points is a smaller lever than departure hour, but it is free.
Carrier by carrier
Which airlines ran best at RDU in June
The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 87.8% of the time; Southwest Airlines manages 70.7%. Sample sizes sit next to every figure, because a two-point gap across 737 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Lines | 992 | 87.8% | 93 min | 1.51% | A |
| American Airlines | 897 | 77.6% | 97 min | 2.68% | B |
| Southwest Airlines | 737 | 70.7% | 55 min | 0.27% | C+ |
| Republic Airways | 551 | 73.9% | 93 min | 3.45% | C− |
| United Airlines | 441 | 75.4% | 89 min | 1.13% | B |
| Frontier Airlines | 399 | 75.3% | 80 min | 1.00% | B |
| JetBlue Airwaysthin sample | 266 | 74.1% | 83 min | 2.63% | C |
| PSA Airlinesthin sample | 155 | 67.9% | 105 min | 10.97% | C− |
| Alaska Airlinesthin sample | 90 | 75.3% | 61 min | 1.11% | B |
| SkyWest Airlinesthin sample | 55 | 79.6% | 172 min | 0.00% | B+ |
| Envoy Airthin sample | 32 | 56.7% | 83 min | 6.25% | D− |
Republic Airways cancels 3.5% 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.
Route by route
Busiest routes out of RDU in June
| Route | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| RDU to ATL · Atlanta | 392 | 90.0% | 141 min | 0.77% | A+ |
| RDU to ORD · Chicagothin sample | 327 | 76.1% | 108 min | 4.89% | B− |
| RDU to CLT · Charlottethin sample | 266 | 78.7% | 108 min | 1.13% | B |
| RDU to PHL · Philadelphiathin sample | 249 | 74.1% | 93 min | 4.02% | C− |
| RDU to BOS · Bostonthin sample | 242 | 81.4% | 89 min | 4.55% | B− |
| RDU to MCO · Orlandothin sample | 220 | 76.7% | 94 min | 0.45% | B+ |
| RDU to DFW · Dallas-Fort Worththin sample | 199 | 71.0% | 91 min | 4.52% | C− |
| RDU to MIA · Miamithin sample | 195 | 82.8% | 82 min | 1.54% | B |
| RDU to JFK · New Yorkthin sample | 187 | 68.3% | 96 min | 2.14% | C |
| RDU to BNA · Nashvillethin sample | 166 | 81.3% | 66 min | 0.00% | B+ |
| RDU to DCA · Washingtonthin sample | 164 | 65.8% | 102 min | 8.54% | C− |
| RDU to DEN · Denverthin sample | 154 | 76.5% | 59 min | 0.00% | B+ |
| RDU to BWI · Baltimorethin sample | 154 | 81.6% | 54 min | 1.30% | B |
| RDU to LGA · New Yorkthin sample | 154 | 73.8% | 78 min | 5.84% | C− |
| RDU to EWR · Newarkthin sample | 150 | 79.6% | 126 min | 2.00% | B |
| RDU to TPA · Tampathin sample | 114 | 88.4% | 52 min | 1.75% | A |
| RDU to DTW · Detroitthin sample | 113 | 93.8% | 105 min | 0.88% | A+ |
| RDU to MSP · Minneapolisthin sample | 113 | 84.1% | 48 min | 0.00% | B+ |
| RDU to FLL · Fort Lauderdalethin sample | 104 | 81.6% | 86 min | 0.96% | B+ |
| RDU to SEA · Seattlethin sample | 90 | 75.6% | 61 min | 0.00% | B+ |
| RDU to MDW · Chicagothin sample | 88 | 67.0% | 58 min | 0.00% | C+ |
| RDU to IAD · Washingtonthin sample | 86 | 83.5% | 115 min | 1.16% | B |
| RDU to PHX · Phoenixthin sample | 81 | 45.7% | 67 min | 0.00% | F+ |
| RDU to LAX · Los Angelesthin sample | 76 | 77.3% | 52 min | 1.32% | B |
| RDU to SFO · San Franciscothin sample | 76 | 53.3% | 60 min | 0.00% | F+ |
Delay causes
What held RDU up in June
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 86,000 reported delay minutes.
- 41%Late-arriving aircraft
- 28%National Airspace System
- 27%Carrier
- 4%Extreme weather
- 0%Security
41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 86,000 reported delay minutes here, that single category outweighs weather by 10 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 86,109 reported delay minutes.
Cancellations sit at 2.08% against a national 1.65%, which is ordinary. Diversions add another 0.20%.
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.5% of arrivals land a full hour or more behind schedule, against 9.7% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
What to do with this
Flying from RDU in June
For a June trip through RDU: plan on this being one of the airport's harder months. The 5am–8am departures held up best at 89.8% on time, and with 9.5% of arrivals an hour or more late, a connection here deserves more slack than the same trip in September would.
Related
Where to go next
- Raleigh-Durham International (RDU), the whole year
- RDU in July71.6%
- RDU in August78.7%
- RDU in September84.6%
- RDU in October79.0%
- RDU in November80.4%
- RDU in December73.5%
- RDU in January81.0%
- RDU in February82.1%
- RDU in March77.2%
- RDU in April82.4%
- RDU in May81.4%
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.