Flight profile · Alaska Airlines
AS346
Seattle (SEA) to Orlando (MCO) · scheduled 3:35 PM – 11:59 PM
How AS346 performs
832 operations, July 2023 – August 2026.
Between its first and last recorded date on SEA → MCO, AS346 averaged about 5 operations a week (832 in 1,158 days, cancelled ones included).
AS346 arrived on time 78.2% of the time, against 80.3% for all SEA → MCO flights, so this departure is 2.1 percentage points worse than the route as a whole. Against Alaska Airlines’ own flights on this route it is 1.4 points worse.
Source: US DOT Bureau of Transportation Statistics · 832 operations, July 2023 – August 2026 · If AS346 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
What stands out
How AS346 compares to other flight numbers, not just to itself.
Which day you fly matters unusually much here, a wider weekday spread than 99% of 1,863 comparable flight numbers.
90.6% on time on a typical Wednesday, against 66.9% on a Friday.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – August 2026 · The one thing about this specific departure that ranks most extreme against every other published flight number, out of everything FlyerIntel checks — shown only when something clears a real statistical bar, not for every flight.
Where AS346 is right now
A live reading, only if you ask for it. It is not part of the reliability record above.
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| AS346 | 78.2% | 2.04% | -4 min | 3.2% | 832 |
| Alaska Airlines on SEA → MCO | 79.6% | 1.51% | -5 min | 4.0% | 3,654 |
| All SEA → MCO flights | 80.3% | 1.36% | -5 min | 4.0% | 5,881 |
AS346 cancelled 17 of 832 operations (2.04%), above the 1.36% for SEA → MCO.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – August 2026
Why AS346 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
the inbound aircraft was late, so this flight started late
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for AS346 on SEA → MCO. Only delays of 15 minutes or more are attributed. What the five causes mean
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – August 2026
Does a late aircraft delay this flight?
How often the plane that flies AS346 comes in late, and what that does to the departure.
The aircraft flying AS346 came in 15 or more minutes late on 12% of the departures where its previous flight is known. There are not enough departures in both groups to say how the flight left after a late one and after an on-time one.
Matched by tail number to the aircraft’s previous flight into SEA: 756 of 815 departures. Unknown, cancelled or diverted inbounds and gaps over 12 hours are left out.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late |
|---|---|
| AS346 | 12% |
| Network, same turn | 17% |
65 scheduled minutes is enough to clean and board when the aircraft is on time, with little to spare when it is not.
The network row is every flight with a scheduled turn of 60 to 89 minutes. How often AS346’s aircraft landed 15 or more minutes late is lower than the network’s. There are not enough departures in both groups to compare how it left.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – August 2026
From pushback to gate
When it leaves SEA late, does that still matter by the time it reaches MCO?
AS346 pushes back an average of 8.1 minutes late and reaches the gate at MCO an average of 1.2 minutes late. The 6.9 minutes between those two figures are slack the published schedule already carries, so a late pushback is partly, not fully, made up before the gate. Its 20.1 minutes on the taxiways at SEA is about what any departure from the airport in that hour spends.
On arrival at MCO, AS346 spends 10.0 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is about what any arrival at MCO spends on the ground before reaching the gate.
Taxi-out is gate to wheels up and sits inside the scheduled block; the hourly comparison is 35,749 SEA departures. Taxi-in is landing to gate, set against 510,310 arrivals at MCO. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – August 2026
The hour it leaves SEA
AS346 has one departure time, 3:35 PM, so this is what that hour at SEA is worth.
On-time arrival rate. 35,749 departures from SEA are scheduled in the 3 PM–4 PM hour over the period, against 526,113 across the whole day.
AS346 is scheduled out of SEA at 3:35 PM, in the 3 PM–4 PM bank. Departures from SEA in that hour arrive on time 77.8% of the time against 78.9% across the airport’s whole day, so the hour AS346 leaves in is an ordinary one for SEA and explains nothing about its record either way.
Both airport figures cover every destination from SEA, so they describe the slot, not this journey; the route comparison is above. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – August 2026 · Hours below 120 departures are not scored.
By day of week
Does AS346 run worse on particular days?
Wednesday is historically the most reliable day and Friday the least, a gap of 23.7 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – August 2026 · Days with fewer than 120 operations are not scored.
Other routes AS346 has flown
Carriers reassign flight numbers. AS346 also served these 3 other city pairs in the period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| SEA→ORD Seattle to Chicago | June 11, 2026 – August 17, 2026 | 45 | — |
| PHX→ANC Phoenix to Anchorage | April 22, 2026 – June 8, 2026 | 37 | — |
| PDX→OGG Portland to Kahului | May 15, 2025 – June 11, 2025 | 28 | — |
The figures above describe only SEA → MCO, the route AS346 flies now.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
31 min late
against a median of 4 min early
Percentiles over 832 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – August 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| DL448 | Delta Air Lines | 81.4% | 3 min early | 682 |
| AS394 | Alaska Airlines | 80.0% | 2 min early | 939 |
| AS346 this flight | Alaska Airlines | 78.2% | 4 min early | 832 |
| DL328 | Delta Air Lines | 76.1% | 1 min early | 721 |
Among all 4 departures on this route with at least 600 operations, AS346 has the 3rd highest on-time rate, 3.2 points behind the best. Every departure here has at least 600 operations; the other rows are the most punctual on the route, not all of them.
Data and methodology
Calculated by FlyerIntel from 832 records of AS346 operating SEA → MCO, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule; cancelled and diverted flights are reported separately, not in the on-time rate.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
Analysis last recomputed