Flight number record
AS 365
Alaska Airlines · Dallas-Fort Worth to Seattle
- Route
- DFW → SEA
- Departs
- 09:00
- Flights
- 359
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AS 365, check with Alaska Airlines.
AS 365 lands a B, 2 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 40 minutes on average. That rests on 359 flights, with a median arrival 4 minutes early.
Key figures
On time
78.8%
Arrivals under 15 minutes late, of 354 completed flights
Avg delay
42 min
Across delayed arrivals only, not all flights
Cancelled
1.11%
National rate is 1.89%
1 hour+ late
2.5%
National rate is 8.3%
These figures cover 359 flights between September 2025 and August 2026. The median arrival is 4 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 AS 365 flies
AS 365 flies DFW to SEA without a single fixed slot. Its most common scheduled departure was 09:00, used on 131 of 359 flights, with 08:00 (95 flights) next.
- Departs 09:00131 flights36.5%
- Departs 08:0095 flights26.5%
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 09:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and AS 365 runs 5 points worse at 78.8%. 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
AS 365 next to DFW to SEA
Every carrier on DFW to SEA combined arrived on time 71.1% of the time across 5,227 flights, so AS 365 is 8 points ahead of it. Alaska flew 1,758 flights on the same city pair under all its flight numbers, including this one, and those ran 77.2% on time. Across its whole network Alaska Airlines managed 79.7%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 365thin sample | 359 | 78.8% | 42 min | 1.11% | B |
| All Alaska Airlines on DFW–SEA | 1,758 | 77.2% | 53 min | 1.19% | B |
| All carriers on DFW–SEA | 5,227 | 71.1% | 62 min | 1.78% | C |
| Alaska Airlines, whole network | 309,844 | 79.7% | 52 min | 1.20% | B |
Across the year
AS 365 quarter by quarter
AS 365 did not run the same all year. Its best quarter was Jul–Sep 2026 at 95.1% on time and its weakest Jul–Sep 2025 at 60.0%, a swing of 35 points on roughly 72 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 flights60.0%
- Oct–Dec 202591 flights62.9%
- Jan–Mar 202688 flights82.6%
- Apr–Jun 202688 flights86.4%
- Jul–Sep 202662 flights95.1%
Scale runs 50% to 100%.
By weekday, AS 365 did best on Friday at 88.2% on time and worst on Monday at 75.0%. Each day rests on about 51 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AS 365 runs when it is late
Most of the lateness is short. 40 of the 75 late arrivals were under half an hour behind, and 9 reached an hour or more.
- 15+ min early79 flights22.3%
- Within 15 min200 flights56.5%
- 15–29 min late40 flights11.3%
- 30–59 min late26 flights7.3%
- 1–2 hours late6 flights1.7%
- 2+ hours late3 flights0.8%
Scale runs 0% to 100%.
Share of 354 completed flights by arrival against schedule.
14 of 57 late departures made up the time and arrived on time, 25% of them. In the other direction, 32 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 SEA.
The worst days
Worst days for AS 365
The latest arrival of the period was on 22 September 2025, 6 hours 42 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across September, July, December, May and January, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 22 September 2025 | 6 hours 42 minutes | Extreme weather |
| 23 July 2026 | 5 hours 10 minutes | Carrier |
| 22 December 2025 | 2 hours 27 minutes | Late-arriving aircraft |
| 26 May 2026 | 1 hour 57 minutes | Late-arriving aircraft |
| 27 January 2026 | 1 hour 21 minutes | Extreme weather |
Delay causes
Why AS 365 runs late
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 3,165 reported delay minutes.
- 42%National Airspace System
- 22%Carrier
- 18%Late-arriving aircraft
- 17%Extreme weather
- 2%Security
Extreme weather accounts for 17% 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 quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.8 times the usual weather exposure. The split is drawn from 3,165 delay minutes reported on AS 365.
Cancellations sit at 1.11% against a national 1.89%, which is ordinary. Diversions add another 0.28%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 2.5% 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 1,660 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 359 flights under AS 365 in the data flew DFW to SEA. 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. 359 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 AS 365
For a booking, read AS 365 as 78.8% on time with 1.11% cancelled over 359 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DFW to SEA, every carrier and departure
- SEA to DFW, the return direction
- Delta Air Lines 804 on the same route85.0%
- American Airlines 757 on the same route72.1%
- American Airlines 727 on the same route54.8%
- American Airlines 767 on the same route74.4%
- Alaska Airlines 415 on the same route85.1%
- American Airlines 707 on the same route82.4%
- Dallas/Fort Worth International (DFW) delay statistics
- Seattle-Tacoma International (SEA) delay statistics
- Alaska Airlines on-time record
- Every Alaska Airlines 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 Alaska Airlines’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.