Boeing 737-300

Narrow-body jet

BoeingPowered by CFM International or Ama/Expr
Busiest US routes for Boeing 737-300, by departures: AEX–HRL, CVG–ROC, HAV–MIA, CVG–MEM, AEX–ELP, PUJ–SJU, ELP–HRL, GEO–MIA, CUR–MIA, CVG–MSY, CMW–MIA, CVG–MSP, BNA–CVG, BNA–MSY, AEX–GRKCVGMIAAEXHRLELPROCMSYHAVBNA
The busiest US routes for the Boeing 737-300, 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 May 2026.
Passengers flown a year
61.5K
55th-most common US type
Airframes in US fleets
12
US operators
4
Airports served
10
Countries
2
Load factor
46.1%

Where the Boeing 737-300 flies

Filed traffic data

The operators table below counts the registered Boeing 737-300 airframes each airline owns (US DOT Form 41). These figures are how much the type actually flew — departures, seats, and passengers filed with US DOT T-100 over the trailing 12 months, not fleet size.

Departures flown

1,964

May 2026

Seats flown

149,209

Passengers

61,525

Load factor

46.1%

RPM ÷ ASM

Block hours

3,172

Busiest Boeing 737-300 routes

The Boeing 737-300's busiest US routes over the trailing 12 months, by departures.

The longest and shortest Boeing 737-300 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

816 mi

Alexandria – El Paso (AEX–ELP)

2h 10m block · 95 departures · 32% load

Flown by Eastern Air Express.

Shortest route flown

230 mi

Nashville – Cincinnati / Covington (BNA–CVG)

1h 9m block · 60 departures

Flown by Kalitta Charters II. Also one of the type's busiest routes anywhere in the US — a short hop worked like a bus line.

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

Airports the Boeing 737-300 serves

The Boeing 737-300 serves 10 US airports across 2 countries. The busiest, by departures:

  • CVG

    Cincinnati / Covington

    169 departures · 3 routes · 1 operator

    19.7%

    Share

  • AEX

    Alexandria

    135 departures · 2 routes · 1 operator

    15.8%

    Share

  • HRL

    Harlingen

    106 departures · 2 routes · 1 operator

    12.4%

    Share

  • ELP

    El Paso

    81 departures · 2 routes · 1 operator

    9.5%

    Share

  • ROC

    Rochester

    64 departures · 1 route · 1 operator

    7.5%

    Share

  • MEM

    Memphis

    61 departures · 1 route · 1 operator

    7.1%

    Share

  • MSY

    New Orleans

    61 departures · 2 routes · 2 operators

    7.1%

    Share

  • BNA

    Nashville

    60 departures · 1 route · 1 operator

    7.0%

    Share

  • HAV

    Havana

    60 departures · 1 route · 2 operators

    7.0%

    Share

  • MIA

    Miami

    60 departures · 1 route · 3 operators

    7.0%

    Share

Browse all airports →

Who flies the Boeing 737-300

Two questions in one table. Airframes is what each carrier reported owning in its US DOT fleet filing; seats flown is how much of the type it actually operated. They can rank differently, and the gap is the interesting part.

Operator
Eastern Air Express37Q5127.2K85.2%26.6 yr
Kalitta Charters IIKLQ300.0%5.3 yr
Aloha Air CargoKH3——9.6 yr
Northern Air CargoNC1——10.8 yr

Airframes are the latest Form 41 filing; seats flown and share are US DOT T-100 for the type's most-flown operators — a dash means a carrier isn't among them (a freighter operator, or one that flies fewer).

How old is the US Boeing 737-300 fleet?

Boeing 737-300 — airframes by age (years)

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 airframeN629SWBoeing 737-30031.2 yr · Delivered Jun 6, 1995
Newest airframeN304KHBoeing 737-3000.8 yr · Delivered Nov 12, 2025

Monthly Boeing 737-300 capacity

47
570
281
356
99
139
83
121
112
106
47
3
JunJulAugSepOctNovDecJanFebMarAprMay
Monthly Boeing 737-300 departures across US routes, trailing 12 months through May 2026. Peak month in solid ink.

How common is the Boeing 737-300?

The Boeing 737-300 makes up 0.1% of all tracked US airline aircraft — the 55th-most common type in service.

Share of all tracked US airline aircraft · top 12 types shown · 118 others hold the remaining 37.5% · Boeing 737-300 is the ringed slice at 0.1%

Frequently asked

How many Boeing 737-300 are in US airline fleets?

US carriers operate about 12 Boeing 737-300 aircraft across 4 airlines, 10 of them in service.

Which airline operates the most Boeing 737-300?

Eastern Air Express operates the largest US Boeing 737-300 fleet, with about 5 aircraft.

What is the busiest Boeing 737-300 route?

The busiest US route flown by the Boeing 737-300 is AEX–HRL, with about 134 departures over the trailing 12 months.

Which airline flies the Boeing 737-300 the most?

Eastern Air Express flies the most Boeing 737-300 capacity in US service, with about 127.2K seats flown over the trailing 12 months.

How many passengers does the Boeing 737-300 carry?

The Boeing 737-300 carried about 61.5K passengers on US routes over the trailing 12 months.

What is the longest Boeing 737-300 flight?

The longest US route flown by the Boeing 737-300 is AEX–ELP, about 816 miles, flown by Eastern Air Express.

How many airports does the Boeing 737-300 serve?

The Boeing 737-300 serves about 10 US airports across 2 countries, led by Cincinnati / Covington (CVG).

How old is the average Boeing 737-300?

The US Boeing 737-300 fleet averages about 15.7 yr.

How common is the Boeing 737-300 in US fleets?

The Boeing 737-300 is the 55th-most common aircraft type in tracked US airline fleets, by number of aircraft.

Inventory: US DOT Form 41 Schedule B-43 (2025). Deliveries: Airbus & Boeing official reports. Registry status: FAA. Last refreshed Aug 1, 2026.