US Airline Carrier/Codes

Gimme Dat Code

100

Two letter code for American Airlines

AA

200

Two letter code for Southwest.

WN

300

Two letter code for Delta Airlines.

DL

400

Two letter code for Copa Airlines

CM

500

Two letter code for Jetblue

B6

Who's flying

100

This airline is represented by this two letter code - UA

United Airlines

200

This airline is represented by this two letter airline code - AS

Alaska Airlines

300

This airline is represented by this two letter airline code - AC

Air Canada

400

This airline is represented by this two letter airline code - WS

WestJet

500

This airline is represented by this two letter airline code - AM

Aeromexico

Non Preferred Carriers

100

Two letter airline code for Porter Air

PD

200

Two letter code for Frontier Airlines

F9

300

Two letter code for Spirit Airlines

NK

400

Two letter airline code for Hawaiin Air

HA

500

Two letter code for Caribbean Airlines

BW

Digits

100

United Airlines three digit ARC airline number

016

200

014

Air Canada's three digit ARC airline number

300

Copa Airlines three digit ARC airline number 

230

400

838

WestJet's three digit ARC airline number

500

Aeromexico's three digit ARC airline code

139

And more Digits

100

001

American Airlines three digit ARC airline code

200

Delta's three digit ARC airline code

006

300

027

Alaska Airlines three digit ARC airline code

400

Southwest's three digit ACR airline code

526

500

279

JetBlue's three digit ARC airline code