Delta Air Lines 737-900ER
DLNarrow-body jet
Fleet as reported in the 2025 annual filing · Registry & ages refreshed Sep 1, 2026
- Passengers flown a year
- 33.1M
- 1st-largest Delta Air Lines sub-fleet
- Airframes in the filing
- 163
- Airports served
- 98
- Countries
- 16
- Departures a day
- 617
- Average age
- 10.1 yr
How Delta Air Lines flies its 737-900ER
Filed traffic dataThe count above is the 737-900ER airframes Delta Air Lines owns (US DOT Form 41). This is how it actually flew them to 98 airports across 16 countries — the capacity and busiest routes filed with US DOT T-100 over the trailing 12 months.
Departures flown
225,349
May 2026
Seats flown
40,273,749
Passengers
33.1M
Load factor
83.3%
RPM ÷ ASM
Block hours
568,781
Delta Air Lines's busiest 737-900ER routes
Its busiest 737-900ER routes over the trailing 12 months, by departures.
Atlanta – Raleigh/Durham (ATL–RDU)
6,022 departures · 903,207 passengers · 356 mi
85.6%
Load
Atlanta – Kansas City (ATL–MCI)
4,967 departures · 716,294 passengers · 692 mi
81.7%
Load
Atlanta – Charleston (ATL–CHS)
4,817 departures · 703,538 passengers · 259 mi
83.1%
Load
Atlanta – Indianapolis (ATL–IND)
4,423 departures · 625,942 passengers · 432 mi
79.9%
Load
3,922 departures · 559,238 passengers · 215 mi
80.8%
Load
3,686 departures · 530,929 passengers · 214 mi
82.7%
Load
3,317 departures · 491,784 passengers · 272 mi
83.8%
Load
Atlanta – Pittsburgh (ATL–PIT)
3,280 departures · 462,476 passengers · 526 mi
80.2%
Load
Atlanta – Cincinnati / Covington (ATL–CVG)
3,236 departures · 492,399 passengers · 373 mi
85.7%
Load
3,208 departures · 448,655 passengers · 447 mi
79.0%
Load
3,178 departures · 448,298 passengers · 554 mi
79.8%
Load
Atlanta – Birmingham (ATL–BHM)
3,163 departures · 436,106 passengers · 134 mi
78.6%
Load
3,056 departures · 417,566 passengers · 332 mi
78.0%
Load
3,053 departures · 465,614 passengers · 516 mi
85.8%
Load
Atlanta – New Orleans (ATL–MSY)
3,035 departures · 453,737 passengers · 425 mi
84.2%
Load
The longest and shortest Delta Air Lines 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
2,466 mi
Fairbanks – Minneapolis (FAI–MSP)
5h 19m block · 184 departures · 85% load
Flown by Delta Air Lines. A long leg for a narrow-body twin — far enough from a diversion airport that the type carries an ETOPS rating.
Shortest route flown
134 mi
Atlanta – Birmingham (ATL–BHM)
55m block · 3,163 departures · 79% load
Flown by Delta Air Lines. About 55m of block time, most of it connecting traffic feeding the hub.
Source: US DOT Bureau of Transportation Statistics, T-100 Segment. Data through May 2026.
Where Delta Air Lines flies the 737-900ER from
Delta Air Lines flies its 737-900ER from 98 US airports in 16 countries. The busiest, by departures:
- ATL
61,705 departures · 78 routes
28.0%
Share
- MSP
17,052 departures · 44 routes
7.7%
Share
- DTW
11,037 departures · 31 routes
5.0%
Share
- SLC
10,730 departures · 29 routes
4.9%
Share
- LAX
6,930 departures · 15 routes
3.1%
Share
- SEA
5,740 departures · 12 routes
2.6%
Share
- JFK
5,221 departures · 12 routes
2.4%
Share
- LAS
4,749 departures · 7 routes
2.2%
Share
- RDU
4,597 departures · 7 routes
2.1%
Share
- BNA
4,263 departures · 5 routes
1.9%
Share
Where the 737-900ER sits in Delta Air Lines's fleet
The 737-900ER is 15.9% of Delta Air Lines's 1,025 tracked mainline aircraft.
Share of Delta Air Lines's mainline fleet · each type a slice
Other Delta Air Lines types
How old is the Delta Air Lines 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 163 737-900ER tail numbers in Delta Air Lines's fleet →
Monthly Delta Air Lines 737-900ER capacity
Frequently asked
How many 737-900ER does Delta Air Lines have?
Delta Air Lines operates about 163 737-900ER aircraft — 163 in service and 0 stored in its latest US DOT fleet filing.
Where does Delta Air Lines fly the 737-900ER?
Delta Air Lines flies its 737-900ER to about 98 US airports across 16 countries, its busiest route being ATL–RDU.
How old are Delta Air Lines's 737-900ER?
Delta Air Lines's 737-900ER fleet averages about 10.1 yr, ranging from 3.1 yr to 12.9 yr.
What is the longest 737-900ER route Delta Air Lines flies?
The longest 737-900ER route Delta Air Lines flew over the trailing 12 months is FAI–MSP, about 2,466 miles.