| Airline (External link to a webpage with more info) |
Image (External link to airline's website) |
IATA |
ICAO |
Callsign |
Hubs, Secondary Hubs, and Focus Cities |
Founded |
Notes |
| Alaska Airlines |
 |
AS |
ASA |
ALASKA |
- Seattle/Tacoma
- Anchorage
- Los Angeles
- Portland (OR)
- San Francisco
- San Diego
- San Jose (CA)
|
1932 |
Founded as McGee Airways and commenced operations in 1944 as Alaska Airlines.
|
| Allegiant Air |
 |
G4 |
AAY |
ALLEGIANT |
- Las Vegas
- Bellingham
- Cincinnati
- Fort Lauderdale
- Fort Walton Beach
- Los Angeles
- Myrtle Beach
- Oakland
- Orlando/Sanford
- Phoenix/Mesa
- Pittsburgh
- Punta Gorda (FL)
- St. Petersburg/Clearwater
|
1997 |
Founded as WestJet Express and commenced operations in 1998 as Allegiant Air.
|
| American Airlines |
 |
AA |
AAL |
AMERICAN |
- Dallas/Fort Worth
- Charlotte
- Chicago-O'Hare
- Los Angeles
- Miami
- New York-JFK
- New York-LaGuardia
- Philadelphia
- Phoenix-Sky Harbor
- Washington-National
|
1926 |
Founded as American Airways and commenced operations in 1936 as American Air Lines; largest airline in the world based on airline company revenue, scheduled passenger miles flown (per year), and fleet size.
|
| Delta Airlines |
 |
DL |
DAL |
DELTA |
- Atlanta
- Detroit
- Los Angeles
- Minneapolis/St. Paul
- New York-JFK
- New York-LaGuardia
- Salt Lake City
- Seattle/Tacoma
- Boston
- Cincinnati
- Raleigh/Durham
|
1924 |
Founded as Huff Daland Dusters and commenced operations in 1929 as Delta Air Service; largest airline in the world based on number of passengers served per year.
|
| Frontier Airlines |
 |
F9 |
FFT |
FRONTIER FLIGHT |
- Denver
- Atlanta
- Austin
- Chicago-O'Hare
- Cincinnati
- Cleveland
- Las Vegas
- Miami
- Orlando
- Philadelphia
- Raleigh/Durham
- San Antonio
- Trenton
|
1994 |
| Hawaiian Airlines |
 |
HA |
HAL |
HAWAIIAN |
- Honolulu
- Kahului
- Kailua-Kona
- Lihue
|
1929 |
Founded as Inter-Island Airways in early 1929 and commenced operations in late 1929 as Hawaiian Airlines
|
| JetBlue Airways |
 |
B6 |
JBU |
JETBLUE |
- New York-JFK
- Boston
- Fort Lauderdale
- Long Beach
- Orlando
- San Juan
|
1998 |
Founded as New Air and commenced operations in 2000 as JetBlue Airways.
|
| Southwest Airlines |
 |
WN |
SWA |
SOUTHWEST |
- Dallas-Love
- Atlanta
- Baltimore
- Chicago-Midway
- Denver
- Houston-Hobby
- Las Vegas
- Oakland
- Orlando
- Phoenix-Sky Harbor
- Austin
- Fort Lauderdale
- Los Angeles
- Nashville
- Sacramento
- San Diego
- San Jose (CA)
- St. Louis
- Tampa
|
1967 |
Founded as Air Southwest and commenced operations in 1971 as Southwest Airlines.
|
| Spirit Airlines |
 |
NK |
NKS |
SPIRIT WINGS |
- Fort Lauderdale
- Detroit
- Las Vegas
- Atlantic City
- Chicago-O'Hare
- Dallas/Fort Worth
|
1980 |
Founded as Charter One.
|
| Sun Country Airlines |
 |
SY |
SCX |
SUN COUNTRY |
- Minneapolis/St. Paul
- Dallas/Fort Worth
|
1982 |
Commenced operations in 1983.
|
| United Airlines |
 |
UA |
UAL |
UNITED |
- Chicago-O'Hare
- Denver
- Guam
- Houston-Intercontinental
- Los Angeles
- Newark
- San Francisco
- Washington-Dulles
- Cleveland
|
1926 |
Founded as Varney Air Lines and commenced operations in 1931 as United Air Lines.
|
