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Aircraft family

Boeing 737 Family

The Boeing 737 is a single-aisle short-to-medium-haul aircraft family spanning early Original models, Classic, Next Generation, and MAX generations. It is one of the most widely operated commercial jet families.

01

Overview

The Boeing 737 is a single-aisle short-to-medium-haul aircraft family spanning early Original models, Classic, Next Generation, and MAX generations. It is one of the most widely operated commercial jet families.

Advantages

  • Large global support ecosystem.
  • Strong commonality across many short-haul airline fleets.
  • Broad variant range from small-capacity to high-density missions.

Limitations

  • Legacy ground-clearance constraints influence engine installation and systems design.
  • Different generations have very different cockpit, engine, and operational details.
02

Identification

Key terms

Technical features

  • Connects model suffixes, airline maintenance strategy, and performance limits.
  • Important for aircraft identification and fleet comparison.

Advantages

  • Helps explain range, payload, noise, and fuel-burn differences.

Limitations

  • Public data may omit thrust derates or later engine swaps.
03

Aircraft line

FamilyBoeing 737 Family

Explore models

737-100Engine family: JT8DView entry737-200Engine family: JT8DView entry737-300Engine family: CFM56-3View entry737-400Engine family: CFM56-3View entry737-500Engine family: CFM56-3View entry737-600Engine family: CFM56-7BView entry737-700Engine family: CFM56-7BView entry737-800Engine family: CFM56-7BView entry737-900Engine family: CFM56-7BView entry737 MAX 7Engine family: LEAP-1BView entry737 MAX 8Engine family: LEAP-1BView entry737 MAX 8-200Engine family: LEAP-1BView entry737 MAX 9Engine family: LEAP-1BView entry737 MAX 10Engine family: LEAP-1BView entry737-200 AdvancedEngine family: JT8DView entry737-900EREngine family: CFM56-7BView entryBBJBBJ is a member of the Boeing 737 Family. It should be read within the wider family context because engines, range, cabin layout, and cargo capability vary by airline configuration and production standard.View entryC-40Engine family: CFM56-7BView entryP-8 PoseidonEngine family: CFM56-7BView entry
04

Technical notes

Technical notes

  • Major generations include 737 Original, 737 Classic, 737 Next Generation, and 737 MAX.
  • The family balances low ground height, quick turnarounds, and high fleet commonality.
  • Later NG and MAX models introduced larger engines, updated wings, winglets, flight-deck changes, and efficiency improvements.
  • Major variants covered here: 737-100, 737-200, 737-300, 737-400, 737-500, 737-600, 737-700, 737-800, 737-900, 737 MAX 7, 737 MAX 8, 737 MAX 9, 737 MAX 10, BBJ.

Cabin configurations

Format: F8/J42/W28/Y216; F=First, J=Business, W=Premium Economy, Y=Economy

Spring Airlines

Y189

AeroLOPA source: Spring Airlines 737-800, normalized cabin configuration Y189. Chinese low-cost example.

AeroLOPA

Southwest

Y175

AeroLOPA source: Southwest 737-800, normalized cabin configuration Y175.

AeroLOPA

Ryanair

Y189

AeroLOPA source: Ryanair 737-800, normalized cabin configuration Y189.

AeroLOPA

Ryanair

Y197

AeroLOPA source: Ryanair 737 MAX 8, normalized cabin configuration Y197.

AeroLOPA

Southwest

Y175

AeroLOPA source: Southwest 737 MAX 8, normalized cabin configuration Y175.

AeroLOPA

Flair Airlines

Y189

AeroLOPA source: Flair Airlines 737 MAX 8, normalized cabin configuration Y189.

AeroLOPA

Southwest Airlines

Y143

AeroLOPA source: Southwest Airlines 737-700, normalized cabin configuration Y143. Requested backfill v3. AeroLOPA index: Southwest 737-7H4 2026 cabin iteration 143 seats.

AeroLOPA

SpiceJet

Y149

AeroLOPA source: SpiceJet 737-700, normalized cabin configuration Y149. Requested backfill v3. AeroLOPA index: SpiceJet 737-7GL 149 seats.

AeroLOPA

WestJet

J12/Y120

AeroLOPA source: WestJet 737-700, normalized cabin configuration J12/Y120. Requested backfill v3. AeroLOPA index: WestJet 737-700 132 seats, 12 premium/Plus seats normalized to J for schema.

AeroLOPA

Jin Air

J8/Y180

AeroLOPA source: Jin Air 737-900 / 737-900ER, normalized cabin configuration J8/Y180. Requested backfill v3. AeroLOPA index: Jin Air 737-9B5 188 seats, 8+180.

AeroLOPA

Lion Air

Y215

AeroLOPA source: Lion Air 737-900 / 737-900ER, normalized cabin configuration Y215. Requested backfill v3. AeroLOPA index: Lion Air 737-9GPER 215 seats.

AeroLOPA

Thai Lion Air

Y215

AeroLOPA source: Thai Lion Air 737-900 / 737-900ER, normalized cabin configuration Y215. Requested backfill v3. AeroLOPA index: Thai Lion Air 737-9GPER 215 seats.

AeroLOPA

SpiceJet

Y212

AeroLOPA source: SpiceJet 737-900 / 737-900ER, normalized cabin configuration Y212. Requested backfill v3. AeroLOPA index: SpiceJet 737-9GJER 212 seats.

AeroLOPA

flydubai

J16/Y156

AeroLOPA source: flydubai 737 MAX 9, normalized cabin configuration J16/Y156. Requested backfill v3. Hybrid/low-cost carrier; AeroLOPA index: flydubai 737-Max 9 172 seats, 16+156.

AeroLOPA
06

Sources

Wikipedia: Boeing 737 Family