Flight number record
DL 1022
Delta Air Lines · Raleigh to Boston
- Route
- RDU → BOS
- Departs
- 09:23
- Flights
- 309
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1022, check with Delta Air Lines.
DL 1022 earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 11 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 309 flights, with a median arrival 14 minutes early.
Set against the rest of the country, DL 1022's record is 11 points better than the US average of 77.3%. That gap is worth roughly 107 fewer late arrivals for every thousand flights.
Key figures
On time
88.0%
Arrivals under 15 minutes late, of 301 completed flights
Avg delay
80 min
Across delayed arrivals only, not all flights
Cancelled
2.59%
National rate is 1.89%
1 hour+ late
6.0%
National rate is 8.3%
These figures cover 309 flights between September 2025 and August 2026. The median arrival is 14 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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Schedule
When DL 1022 flies
DL 1022 flies RDU to BOS without a single fixed slot. Its most common scheduled departure was 09:23, used on 48 of 309 flights, with 10:05 (46 flights) and 09:55 (35 flights) next.
- Departs 09:2348 flights15.5%
- Departs 10:0546 flights14.9%
- Departs 09:5535 flights11.3%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 09:23 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 1022 runs 4 points better at 88.0%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
DL 1022 next to RDU to BOS
Every carrier on RDU to BOS combined arrived on time 78.5% of the time across 2,847 flights, so DL 1022 is 10 points ahead of it. Delta flew 1,435 flights on the same city pair under all its flight numbers, including this one, and those ran 79.6% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1022thin sample | 309 | 88.0% | 80 min | 2.59% | A |
| All Delta Air Lines on RDU–BOS | 1,435 | 79.6% | 89 min | 2.72% | B |
| All carriers on RDU–BOS | 2,847 | 78.5% | 83 min | 2.95% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1022 quarter by quarter
DL 1022 did not run the same all year. Its best quarter was Apr–Jun 2026 at 96.1% on time and its weakest Oct–Dec 2025 at 84.4%, a swing of 12 points on roughly 77 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202528 flights—
- Oct–Dec 202578 flights84.4%
- Jan–Mar 202670 flights86.6%
- Apr–Jun 202679 flights96.1%
- Jul–Sep 202654 flights88.5%
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, DL 1022 ranged from 85.1% on Thursday to 93.9% on Wednesday. With about 44 flights behind each day, a spread of 9 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 1022 runs when it is late
DL 1022 often beats the schedule: 140 of 301 completed flights, 47%, arrived 15 minutes or more early. The 36 late arrivals split 6 under half an hour, 12 between 30 and 60 minutes, and 18 an hour or more.
- 15+ min early140 flights46.5%
- Within 15 min125 flights41.5%
- 15–29 min late6 flights2.0%
- 30–59 min late12 flights4.0%
- 1–2 hours late12 flights4.0%
- 2+ hours late6 flights2.0%
Scale runs 0% to 100%.
Share of 301 completed flights by arrival against schedule.
5 of 37 late departures made up the time and arrived on time, 14% of them. Only 4 left on time and still arrived late.
The worst days
Worst days for DL 1022
The latest arrival of the period was on 3 April 2026, 5 hours 13 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 3 April 2026 | 5 hours 13 minutes | Late-arriving aircraft |
| 28 September 2025 | 4 hours 44 minutes | Late-arriving aircraft |
| 14 August 2026 | 3 hours 12 minutes | Carrier |
| 27 March 2026 | 2 hours 16 minutes | Late-arriving aircraft |
| 8 September 2025 | 2 hours 10 minutes | Late-arriving aircraft |
Delay causes
Why DL 1022 runs late
Late-arriving aircraft accounts for 64% of the 2,887 delay minutes carriers reported here, and the remaining four split what is left.
- 64%Late-arriving aircraft
- 23%National Airspace System
- 13%Carrier
64% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 2,887 reported delay minutes here, that single category outweighs weather by 64 to one. The split is drawn from 2,887 delay minutes reported on DL 1022.
Cancellations run at 2.59%, against 1.89% nationally. That is about one flight in 40 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 routes
What a delay on this flight costs
6.0% 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 a little over an hour, which a normal layover absorbs.
The 612 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 same number turns up on five other city pairs in the data, including HDN to ATL (16), ATL to HDN (16) and BOS to LGA (5), but none flew often enough under DL 1022 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to RDU to BOS only.
One caution: this is a thin sample. 309 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 DL 1022
For a booking, the cancellation rate is the figure to plan around on DL 1022: 2.59% of its 309 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- RDU to BOS, every carrier and departure
- BOS to RDU, the return direction
- Delta Air Lines 1054 on the same route92.5%
- JetBlue Airways 484 on the same route84.3%
- Delta Air Lines 2393 on the same route71.7%
- Delta Air Lines 1033 on the same route74.5%
- Raleigh-Durham International (RDU) delay statistics
- Boston Logan International (BOS) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means Delta Air Lines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
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.