Flight number record
DL 662
Delta Air Lines · Portland to Atlanta
- Route
- PDX → ATL
- Departs
- 06:00
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 662, check with Delta Air Lines.
DL 662 earns an A+. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 18 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 365 flights, with a median arrival 12 minutes early.
Set against the rest of the country, DL 662's record is 18 points better than the US average of 77.3%. That gap is worth roughly 176 fewer late arrivals for every thousand flights.
Key figures
On time
94.9%
Arrivals under 15 minutes late, of 356 completed flights
Avg delay
68 min
Across delayed arrivals only, not all flights
Cancelled
0.82%
National rate is 1.89%
1 hour+ late
0.8%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 12 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 662 flies
DL 662 flies PDX to ATL without a single fixed slot. Its most common scheduled departure was 06:00, used on 69 of 365 flights, with 06:45 (53 flights) and 06:35 (49 flights) next.
- Departs 06:0069 flights18.9%
- Departs 06:4553 flights14.5%
- Departs 06:3549 flights13.4%
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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 662 runs 6 points better at 94.9%. 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 662 next to PDX to ATL
Every carrier on PDX to ATL combined arrived on time 88.4% of the time across 1,544 flights, so DL 662 is 7 points ahead of it. Delta flew 1,257 flights on the same city pair under all its flight numbers, including this one, and those ran 90.2% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 14 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 662 | 365 | 94.9% | 68 min | 0.82% | A+ |
| All Delta Air Lines on PDX–ATL | 1,257 | 90.2% | 60 min | 0.95% | A+ |
| All carriers on PDX–ATL | 1,544 | 88.4% | 52 min | 0.91% | A+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 662 quarter by quarter
DL 662 did not run the same all year. Its best quarter was Jul–Sep 2025 at 100.0% on time and its weakest Apr–Jun 2026 at 86.5%, a swing of 14 points on roughly 73 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 202530 flights100.0%
- Oct–Dec 202592 flights97.8%
- Jan–Mar 202690 flights98.8%
- Apr–Jun 202691 flights86.5%
- Jul–Sep 202662 flights94.9%
Scale runs 80% to 100%.
By weekday, DL 662 ranged from 90.6% on Monday to 98.0% on Tuesday. With about 52 flights behind each day, a spread of 7 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 662 runs when it is late
DL 662 often beats the schedule: 140 of 356 completed flights, 39%, arrived 15 minutes or more early. Most of the lateness is short. 9 of the 18 late arrivals were under half an hour behind, and 3 reached an hour or more.
- 15+ min early140 flights39.3%
- Within 15 min198 flights55.6%
- 15–29 min late9 flights2.5%
- 30–59 min late6 flights1.7%
- 1–2 hours late0 flights0.0%
- 2+ hours late3 flights0.8%
Scale runs 0% to 100%.
Share of 356 completed flights by arrival against schedule.
Only 16 of 356 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for DL 662
The latest arrival of the period was on 23 May 2026, 6 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 |
|---|---|---|
| 23 May 2026 | 6 hours 21 minutes | Carrier |
| 24 April 2026 | 4 hours 30 minutes | Late-arriving aircraft |
| 8 May 2026 | 2 hours 10 minutes | Carrier |
| 24 November 2025 | 59 minutes | Carrier |
| 20 June 2026 | 52 minutes | Carrier |
Delay causes
Why DL 662 runs late
Carrier accounts for 56% of the 1,219 delay minutes carriers reported here, and the remaining four split what is left.
- 56%Carrier
- 22%Late-arriving aircraft
- 20%National Airspace System
- 2%Extreme weather
The largest share of delay minutes, 56%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 683 of the 1,219 delay minutes reported here. The split is drawn from 1,219 delay minutes reported on DL 662.
Cancellations are rare at 0.82%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 0.8% 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.
At 2,172 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
Every one of the 365 flights under DL 662 in the data flew PDX to ATL. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 365 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 662
For a booking, DL 662 has one of the better records a US domestic flight can show: 94.9% on time and 0.82% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- PDX to ATL, every carrier and departure
- ATL to PDX, the return direction
- Delta Air Lines 539 on the same route86.3%
- Alaska Airlines 784 on the same route79.7%
- Delta Air Lines 888 on the same route94.6%
- Portland International (PDX) delay statistics
- Hartsfield-Jackson Atlanta International (ATL) 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
- Worst months to fly in the US, ranked by the data
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.