Alaska Airlines 737-900ER
ASNarrow-body jet
Fleet as reported in the 2025 annual filing · Registry & ages refreshed Sep 1, 2026
- Passengers flown a year
- 12.6M
- 2nd-largest Alaska Airlines sub-fleet
- Airframes in the filing
- 79
- Airports served
- 77
- Countries
- 5
- Departures a day
- 241
- Average age
- 10.6 yr
How Alaska Airlines flies its 737-900ER
Filed traffic dataThe count above is the 737-900ER airframes Alaska Airlines owns (US DOT Form 41). This is how it actually flew them to 77 airports across 5 countries — the capacity and busiest routes filed with US DOT T-100 over the trailing 12 months.
Departures flown
87,951
May 2026
Seats flown
15,655,278
Passengers
12.6M
Load factor
82.6%
RPM ÷ ASM
Block hours
316,234
Alaska Airlines's busiest 737-900ER routes
Its busiest 737-900ER routes over the trailing 12 months, by departures.
3,166 departures · 449,965 passengers · 1,448 mi
79.8%
Load
2,551 departures · 383,593 passengers · 1,107 mi
84.5%
Load
Los Angeles – Seattle (LAX–SEA)
2,170 departures · 305,873 passengers · 954 mi
79.2%
Load
2,128 departures · 318,684 passengers · 1,050 mi
84.1%
Load
2,083 departures · 316,062 passengers · 867 mi
85.2%
Load
Seattle – San Francisco (SEA–SFO)
1,924 departures · 289,203 passengers · 679 mi
84.5%
Load
1,579 departures · 243,295 passengers · 1,721 mi
86.6%
Load
Dallas-Fort Worth – Seattle (DFW–SEA)
1,443 departures · 226,111 passengers · 1,660 mi
88.0%
Load
1,424 departures · 225,204 passengers · 1,024 mi
88.8%
Load
1,315 departures · 187,266 passengers · 696 mi
80.0%
Load
Los Angeles – Portland (LAX–PDX)
1,311 departures · 182,907 passengers · 834 mi
78.4%
Load
1,299 departures · 181,119 passengers · 1,533 mi
78.3%
Load
1,292 departures · 187,358 passengers · 937 mi
81.5%
Load
1,291 departures · 169,722 passengers · 224 mi
73.9%
Load
Portland – San Diego (PDX–SAN)
1,262 departures · 188,174 passengers · 933 mi
83.8%
Load
The longest and shortest Alaska Airlines 737-900ER flights
The two ends of the type's working envelope, from the routes it actually flew — not what the airframe is certified to do.
Longest route flown
2,846 mi
6h 27m block · 195 departures · 85% load
Flown by Alaska Airlines. A long leg for a narrow-body twin — far enough from a diversion airport that the type carries an ETOPS rating.
Source: US DOT Bureau of Transportation Statistics, T-100 Segment. Data through May 2026.
Where Alaska Airlines flies the 737-900ER from
Alaska Airlines flies its 737-900ER from 77 US airports in 5 countries. The busiest, by departures:
- SEA
27,304 departures · 69 routes
32.2%
Share
- PDX
7,501 departures · 29 routes
8.9%
Share
- SAN
4,087 departures · 19 routes
4.8%
Share
- SFO
3,827 departures · 14 routes
4.5%
Share
- LAX
3,641 departures · 14 routes
4.3%
Share
- ANC
2,944 departures · 10 routes
3.5%
Share
- PHX
2,362 departures · 5 routes
2.8%
Share
- LAS
2,322 departures · 5 routes
2.7%
Share
- JFK
1,578 departures · 5 routes
1.9%
Share
- EWR
1,334 departures · 5 routes
1.6%
Share
Where the 737-900ER sits in Alaska Airlines's fleet
The 737-900ER is 30.4% of Alaska Airlines's 260 tracked mainline aircraft.
Share of Alaska Airlines's mainline fleet · each type a slice
Other Alaska Airlines types
How old is the Alaska Airlines 737-900ER fleet?
Age is measured from each airframe's delivery date — the FAA airworthiness date where available, otherwise the manufacturer's. Bars share a fixed scale across every fleet page, so two carriers can be compared directly.
See all 79 737-900ER tail numbers in Alaska Airlines's fleet →
Monthly Alaska Airlines 737-900ER capacity
Frequently asked
How many 737-900ER does Alaska Airlines have?
Alaska Airlines operates about 79 737-900ER aircraft — 79 in service and 0 stored in its latest US DOT fleet filing.
Where does Alaska Airlines fly the 737-900ER?
Alaska Airlines flies its 737-900ER to about 77 US airports across 5 countries, its busiest route being ANC–SEA.
How old are Alaska Airlines's 737-900ER?
Alaska Airlines's 737-900ER fleet averages about 10.6 yr, ranging from 7.5 yr to 13.9 yr.
What is the longest 737-900ER route Alaska Airlines flies?
The longest 737-900ER route Alaska Airlines flew over the trailing 12 months is ANC–ORD, about 2,846 miles.