Route
PHL → SEA
Philadelphia International Airport Seattle–Tacoma International Airport
How punctual is this route?
- On-time arrivals
- 69.4%
- Less than 15 minutes late
- Cancelled
- 1.8%
- Of scheduled flights
- Average delay when late
- 58 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,431
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 43%
- Airline (crew, maintenance, cleaning) 25%
- Late-arriving aircraft 25%
- Extreme weather 7%
- Security 1%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 80.3% | 122 |
| October 2025 | 70.2% | 123 |
| November 2025 | 78.2% | 87 |
| December 2025 | 38.0% | 93 |
| January 2026 | 73.0% | 68 |
| February 2026 | 86.8% | 55 |
| March 2026 | 46.6% | 75 |
| April 2026 | 83.2% | 114 |
| May 2026 | 78.2% | 157 |
| June 2026 | 71.6% | 174 |
| July 2026 | 65.7% | 184 |
| August 2026 | 60.8% | 179 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| American Airlines | 661 | 70.8% | 2.1% | 57 min |
| Alaska Airlines | 657 | 68.0% | 1.7% | 55 min |
| Delta Air Lines | 113 | 69.4% | 0.9% | 83 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
AS443
36% late · 333 flights
-
AA2361
39% late · 143 flights
-
DL2092
31% late · 113 flights
-
AS446
24% late · 97 flights
-
AS370
38% late · 85 flights
-
AA2534
23% late · 75 flights
-
AA3259
31% late · 75 flights
-
AA2522
48% late · 71 flights
-
AS277
27% late · 70 flights
-
AA2870
16% late · 62 flights
-
AA2763
23% late · 44 flights
-
AA888
11% late · 44 flights
-
AA2311
12% late · 36 flights
-
AA2001
26% late · 35 flights
-
AS1584
14% late · 28 flights
-
AS442
33% late · 28 flights
-
AA1823
26% late · 27 flights
-
AA2086
19% late · 27 flights
-
AA1037
60% late · 20 flights
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