SEA to PHX flight delays & on-time performance
Nonstop flights from Seattle–Tacoma International Airport to Phoenix Sky Harbor International Airport · 1,107 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SEA or PHX right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Seattle (SEA) to Phoenix (PHX) arrived on time 79% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.7% were cancelled, and 5% arrived an hour or more late.
- Envoy Air was the most punctual airline here (86% on time); Southwest Airlines was the least (67%).
- Departures scheduled around 7am did best (92% on time); around 5pm did worst (68%).
- Tuesday was the most reliable day to fly (83% on time) and Thursday the least (76%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (43%).
Which airline is most on time from SEA to PHX?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Envoy AirRegional airline operating American Eagle flights. | 86% | 0.0% | 12 min | 4.7% | 754 |
| American Airlines | 86% | 0.5% | 12 min | 7.2% | 195 |
| Delta Air Lines | 82% | 1.0% | 14 min | 6.2% | 1,766 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 80% | 0.4% | 17 min | 6.4% | 445 |
| Alaska Airlines | 79% | 0.6% | 10 min | 3.6% | 2,887 |
| Frontier Airlines | 71% | 4.3% | 42 min | 9.8% | 139 |
| Southwest Airlines | 67% | 0.8% | 18 min | 6.9% | 1,039 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am94%119 flights
- 6am91%510 flights
- 7am92%672 flights
- 8am87%317 flights
- 9am80%540 flights
- 10am74%310 flights
- 11am75%1,028 flights
- 12pm81%136 flights
- 1pm77%485 flights
- 2pm82%345 flights
- 3pm74%697 flights
- 4pm76%210 flights
- 5pm68%340 flights
- 6pm75%570 flights
- 7pm70%418 flights
- 8pm75%463 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday77%0.7% cancelled
- Tuesday83%0.4% cancelled
- Wednesday83%0.2% cancelled
- Thursday76%0.4% cancelled
- Friday76%1.3% cancelled
- Saturday82%0.4% cancelled
- Sunday76%1.4% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)43%
- Late-arriving aircraft36%
- Air traffic control & airport congestion19%
- Extreme weather1%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)61%
- Extreme weather29%
- Air traffic control & airport congestion10%
- Security0%
SEA to PHX: common questions
- How often are SEA to PHX flights on time?
- 79% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Seattle to Phoenix cancelled?
- 0.7% of scheduled flights were cancelled (51 of 7,225).
- How long are typical delays?
- Across all flights the average arrival delay was 13 min (early arrivals count as zero). Flights that were late arrived 57 min behind schedule on average, and 5.2% of flights were an hour or more late.
- How long is taxi time at SEA?
- Flights on this route spent 21 min taxiing from the gate to takeoff on average.
Related routes
Return trip: PHX to SEA — 82% on time
More flights from Seattle
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SEA → PHX, nonstop flights by US airlines that report to the DOT. How we calculate this.