MSY to SEA flight delays
New Orleans, LA (MSY) Seattle, WA (SEA) · 2,086 miles
626 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
71.61%
Arrived on time
Within 15 minutes of schedule
0.8%
Cancelled
Share of scheduled flights
51 min
When late, late by
Average across delayed arrivals
16 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In April it ran 26.2 points more punctual than in March — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The two directions do not behave alike. SEA to MSY arrives on time 7.8 points more often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
Only Alaska Airlines flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
Flights from New Orleans to Seattle run late more often than the average route, though not severely.
Which airline should you fly on this route?
Over January 2025 – August 2026, Alaska Airlines arrived on time most often on MSY to SEA. Flights ran closest to schedule in April and worst in March.
Every airline on MSY to SEA
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Alaska Airlines | 621 | 71.38% | 0.81% | 51 min | D |
| Delta Air Lines | 5 | 100% | 0% | — | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
SEA to MSY Seattle back to New Orleans 79.42% on time COther routes from New Orleans
Common questions
Are flights from New Orleans to Seattle usually delayed?
71.61% of flights on the MSY to SEA route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is worse than the average route in this record.
Which airlines fly from New Orleans to Seattle?
Only Alaska Airlines appears in the published record on this route, with 621 flights and 71.38% arriving on time.
How often are MSY to SEA flights cancelled?
0.8% of scheduled flights did not operate — about 8 in every thousand. That is in the normal range.
What is the best month to fly New Orleans to Seattle?
April, when 86.7% of flights arrived on time. The worst was March at 60.5%.
When MSY to SEA flights are late, how late are they?
About 51 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on MSY to SEA during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →