Delta Air Lines A321
DLNarrow-body jet
Fleet as reported in the 2025 annual filing · Registry & ages refreshed Sep 1, 2026
- Passengers flown a year
- 28.7M
- 2nd-largest Delta Air Lines sub-fleet
- Airframes in the filing
- 127
- Airports served
- 68
- Countries
- 11
- Departures a day
- 493
- Average age
- 4.4 yr
How Delta Air Lines flies its A321
Filed traffic dataThe count above is the A321 airframes Delta Air Lines owns (US DOT Form 41). This is how it actually flew them to 68 airports across 11 countries — the capacity and busiest routes filed with US DOT T-100 over the trailing 12 months.
Departures flown
180,068
May 2026
Seats flown
34,115,984
Passengers
28.7M
Load factor
84.6%
RPM ÷ ASM
Block hours
479,805
Delta Air Lines's busiest A321 routes
Its busiest A321 routes over the trailing 12 months, by departures.
9,251 departures · 1,442,905 passengers · 762 mi
82.4%
Load
Atlanta – West Palm Beach (ATL–PBI)
7,323 departures · 1,148,727 passengers · 545 mi
82.7%
Load
5,394 departures · 834,178 passengers · 813 mi
81.5%
Load
5,272 departures · 892,710 passengers · 946 mi
89.4%
Load
4,828 departures · 779,533 passengers · 1,199 mi
85.3%
Load
Atlanta – Philadelphia (ATL–PHL)
4,826 departures · 736,997 passengers · 666 mi
80.6%
Load
Atlanta – Fort Lauderdale (ATL–FLL)
4,303 departures · 706,096 passengers · 581 mi
86.5%
Load
Atlanta – Dallas-Fort Worth (ATL–DFW)
4,080 departures · 609,255 passengers · 731 mi
78.7%
Load
3,959 departures · 672,406 passengers · 950 mi
89.6%
Load
3,417 departures · 530,039 passengers · 689 mi
81.8%
Load
Atlanta – San Antonio (ATL–SAT)
3,094 departures · 474,417 passengers · 874 mi
80.9%
Load
Fort Lauderdale – New York (FLL–LGA)
3,048 departures · 506,045 passengers · 1,076 mi
87.5%
Load
3,026 departures · 497,702 passengers · 746 mi
86.7%
Load
Atlanta – Salt Lake City (ATL–SLC)
2,898 departures · 484,667 passengers · 1,590 mi
88.4%
Load
2,843 departures · 447,724 passengers · 502 mi
83.3%
Load
The longest and shortest Delta Air Lines A321 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
1,979 mi
Detroit – Los Angeles (DTW–LAX)
4h 34m block · 1,226 departures · 85% load
Flown by Delta Air Lines.
Source: US DOT Bureau of Transportation Statistics, T-100 Segment. Data through May 2026.
Where Delta Air Lines flies the A321 from
Delta Air Lines flies its A321 from 68 US airports in 11 countries. The busiest, by departures:
- ATL
54,097 departures · 61 routes
30.7%
Share
- MSP
13,230 departures · 27 routes
7.5%
Share
- LGA
12,625 departures · 8 routes
7.2%
Share
- DTW
12,493 departures · 23 routes
7.1%
Share
- BOS
6,472 departures · 8 routes
3.7%
Share
- MCO
6,023 departures · 7 routes
3.4%
Share
- FLL
5,900 departures · 6 routes
3.3%
Share
- SLC
4,776 departures · 14 routes
2.7%
Share
- PBI
4,492 departures · 3 routes
2.5%
Share
- SAN
4,248 departures · 4 routes
2.4%
Share
Where the A321 sits in Delta Air Lines's fleet
The A321 is 12.4% 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 A321 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.
Monthly Delta Air Lines A321 capacity
Frequently asked
How many A321 does Delta Air Lines have?
Delta Air Lines operates about 127 A321 aircraft — 127 in service and 0 stored in its latest US DOT fleet filing.
Where does Delta Air Lines fly the A321?
Delta Air Lines flies its A321 to about 68 US airports across 11 countries, its busiest route being ATL–LGA.
How old are Delta Air Lines's A321?
Delta Air Lines's A321 fleet averages about 4.4 yr, ranging from 0.6 yr to 9.9 yr.
What is the longest A321 route Delta Air Lines flies?
The longest A321 route Delta Air Lines flew over the trailing 12 months is DTW–LAX, about 1,979 miles.