Spirit Airlines A321

Narrow-body jet

Fleet as reported in the 2025 annual filing · Registry & ages refreshed Sep 1, 2026

Spirit Airlines ceased operations May 2, 2026. The figures below are the fleet as last reported, not aircraft in service today. The filing is annual, and continues to report a carrier's fleet after it stops flying.

Spirit Airlines's busiest A321 routes, by departures — line weight is departures flown, dots are the airports it connects. Great-circle paths from US DOT T-100, trailing 12 months through June 2026.

Passengers flown a year: 4.4M; 4th-largest Spirit Airlines sub-fleet
Airframes in the filing: 29
Airports served: 38
Countries: 10
Departures a day: 72
Average age: 9.7 yr

How Spirit Airlines flies its A321

Filed traffic data

The count above is the A321 airframes Spirit Airlines owns (US DOT Form 41). This is how it actually flew them to 38 airports across 10 countries — the capacity and busiest routes filed with US DOT T-100 over the trailing 12 months.

Departures flown

26,165

June 2026

Seats flown

5,809,254

Passengers

4.4M

Load factor

77.3%

RPM ÷ ASM

Block hours

68,566

Spirit Airlines's busiest A321 routes

Its busiest A321 routes over the trailing 12 months, by departures.

Atlanta – Fort Lauderdale (ATL–FLL)
862 departures · 157,167 passengers · 581 mi
82.1%
Load
Newark – Fort Lauderdale (EWR–FLL)
642 departures · 120,496 passengers · 1,065 mi
84.5%
Load
Detroit – Fort Lauderdale (DTW–FLL)
590 departures · 96,084 passengers · 1,127 mi
73.4%
Load
Detroit – Las Vegas (DTW–LAS)
565 departures · 97,113 passengers · 1,749 mi
77.4%
Load
Orlando – Chicago (MCO–ORD)
522 departures · 99,547 passengers · 1,005 mi
85.9%
Load
Boston – Fort Lauderdale (BOS–FLL)
521 departures · 95,211 passengers · 1,237 mi
82.3%
Load
Fort Lauderdale – Houston (FLL–IAH)
514 departures · 86,456 passengers · 966 mi
75.8%
Load
Detroit – New York (DTW–LGA)
503 departures · 80,414 passengers · 502 mi
72.0%
Load
Atlanta – Detroit (ATL–DTW)
483 departures · 86,989 passengers · 594 mi
81.1%
Load
Orlando – San Juan (MCO–SJU)
479 departures · 98,444 passengers · 1,188 mi
92.6%
Load
Fort Lauderdale – New York (FLL–LGA)
443 departures · 84,228 passengers · 1,076 mi
85.6%
Load
Fort Lauderdale – Chicago (FLL–ORD)
443 departures · 83,198 passengers · 1,182 mi
84.6%
Load
Miami – Chicago (MIA–ORD)
387 departures · 71,834 passengers · 1,197 mi
83.6%
Load
Dallas-Fort Worth – Fort Lauderdale (DFW–FLL)
382 departures · 67,329 passengers · 1,119 mi
79.4%
Load
Fort Lauderdale – Philadelphia (FLL–PHL)
355 departures · 65,888 passengers · 993 mi
83.6%
Load

All Spirit Airlines A321 destinations →

The longest and shortest Spirit Airlines 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

1,749 mi

Detroit – Las Vegas (DTW–LAS)

4h 3m block · 565 departures · 77% load

Flown by Spirit Airlines.

Shortest route flown

177 mi

Fort Lauderdale – Orlando (FLL–MCO)

1h 3m block · 223 departures · 60% load

Flown by Spirit Airlines.

Source: US DOT Bureau of Transportation Statistics, T-100 Segment. Data through June 2026.

Where Spirit Airlines flies the A321 from

Spirit Airlines flies its A321 from 38 US airports in 10 countries. The busiest, by departures:

FLL
Fort Lauderdale
4,598 departures · 29 routes
23.0%
Share
MCO
Orlando
2,060 departures · 16 routes
10.3%
Share
DTW
Detroit
1,480 departures · 8 routes
7.4%
Share
ATL
Atlanta
1,098 departures · 7 routes
5.5%
Share
ORD
Chicago
1,090 departures · 8 routes
5.4%
Share
IAH
Houston
984 departures · 9 routes
4.9%
Share
EWR
Newark
980 departures · 7 routes
4.9%
Share
MIA
Miami
927 departures · 9 routes
4.6%
Share
DFW
Dallas-Fort Worth
830 departures · 8 routes
4.1%
Share
LGA
New York
713 departures · 4 routes
3.6%
Share

Browse all airports →

Where the A321 sits in Spirit Airlines's fleet

The A321 is 13.4% of Spirit Airlines's 217 tracked mainline aircraft.

Airbus A320neo 41.9%

Airbus A321 13.4%

Share of Spirit Airlines's mainline fleet · each type a slice

Other Spirit Airlines types

How old is the Spirit Airlines A321 fleet?

Spirit Airlines A321 — airframes by age (years)

0–4

5–9

10–14

15–19

20–24

25–29

30+

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.

Oldest airframeN658NKAirbus A32111.1 yr · Delivered Aug 12, 2015

Newest airframeN687NKAirbus A3218.5 yr · Delivered Mar 30, 2018

See all 29 A321 tail numbers in Spirit Airlines's fleet →

Monthly Spirit Airlines A321 capacity

2.6K

2.8K

2.5K

2.4K

2.6K

2.7K

2.6K

2.3K

2.9K

2.6K

JulAugSepOctNovDecJanFebMarAprMayJun

Monthly Spirit Airlines A321 departures across US routes, trailing 12 months through June 2026. Peak month in solid ink.

Frequently asked

How many A321 does Spirit Airlines have?

Spirit Airlines operates about 29 A321 aircraft — 29 in service and 0 stored in its latest US DOT fleet filing.

Where does Spirit Airlines fly the A321?

Spirit Airlines flies its A321 to about 38 US airports across 10 countries, its busiest route being ATL–FLL.

How old are Spirit Airlines's A321?

Spirit Airlines's A321 fleet averages about 9.7 yr, ranging from 8.5 yr to 11.1 yr.

What is the longest A321 route Spirit Airlines flies?

The longest A321 route Spirit Airlines flew over the trailing 12 months is DTW–LAS, about 1,749 miles.