Avio Space

Submit Article
Main Menu

In Pictures: USA’s Busiest Domestic Airline Routes of 2024

By /

With 14,183,719 seats, the route between Jeju International Airport (CJU) and Seoul Gimpo Airport (GMP) was the busiest domestic flight route for 2024. There were just over four million seats offered for flights between John F. Kennedy International Airport (JFK) and Heathrow Airport (LHR), making this the busiest international route in North America as well as Europe. But which were the busiest domestic airline routes in the US for 2024? Let’s find out.

[ Note: The rankings were based on the data from OAG, a global air traffic data provider. The data were available when the writer last checked the website on 11th February.]

10. Denver- Las Vegas

                                 Southwest Airlines, the most widely used airline at one-stop flight of DEN- LAS route.                                                                          Image: Acroterion| Wikimedia Commons
Route  Denver (DEN)- Las Vegas (LAS)
Seats capacity 2,885,378
                                    Airbus A320-271N NEO in number 10 busiest domestic route in US, Denver (DEN)- Las Vegas (LAS).                            Image: Pedro Aragão| Wikimedia Commons
Distance 626 miles (1,007 km)
Approximate Flight Time 2 hours and 16 minutes
                                               Boeing 737-8 MAX, one of the aircraft flying in the DEN- LAS route.                                                              Image: MarcelX42| Wikimedia Commons

The airlines operating non-stop flights on DEN- LAS route include:

Airline  Aircraft Approximate flight time
Frontier  Airlines (F9) A320neo family 2 hours 10 minutes
Southwest Airlines (WN) 737 NG and 737 MAX 2 hours 13 minutes
United Airlines (UA) 737 and A321 neo 2 hours 5 minutes
                                                             Airbus A321 NEO offers the flight service in DEN- LAS route.                                                                       Image: Hugo LUC| Wikimedia Commons

The airlines offering a one- stop flight connection with the same airline and with the different or codeshare airline on the DEN- LAS route include:

Airline Stopover at Total distance Total flight time
Southwest Airlines Colorado Springs (COS) 679 miles 4 hours 30 minutes
Albuquerque (ABQ) 839 miles 4 hours 30 minutes
Tucson (TUS) 1008 miles 5 hours 10 minutes
Long Beach (LGB) 1089 miles 5 hours 20 minutes
Palm Springs (PSP) 953 miles 5 hours 30 minutes
Santa Ana (SNA) 1076 miles 5 hours 36 minutes
Burbank (BUR) 1077 miles 5 hours 45 minutes
Delta Air Lines Salt Lake City (SLC) 761 miles 4 hours 40 minutes
Los Angeles (LAX) 1102 miles 6 hours 19 minutes
Frontier Airlines Ontario (ONT) 1020 miles 5 hours 3 minutes
American Airlines Phoenix (PHX) 861 miles 5 hours 4 minutes

9. Route: Atlanta- New York La Guardia

Delta Airbus 321 in domestic route, ATL- LAS.Image: Formulanone| Wikimedia Commons
                                                                                Delta Airbus 321 in domestic route, ATL- LGA.                                                                              Image: Formulanone| Wikimedia Commons
Route  Atlanta (ATL)- New York La Guardia (LGA)
Seats capacity 2,918,755
  JetBlue Airline in the number 9 busiest domestic route of US, ATL- LGA.                                                 Image: Timothy Powaleny| Wikimedia Commons
Distance 761 miles
Approximate Fight Time 2 hours 16 minutes
                                                                               Southwest Boeing 737 offers non-stop flight.                                                                             Image: Acroterion| Wikimedia Commons

The airlines operating non-stop flights on ATL- LGA  route include:

Airline  Aircraft Approximate flight time
Delta Airbus A321 2h 16m
Southwest 737 2h 10m
                              United Airways offering its one-stop flight service with the codeshare airline, American airlines.                              Image: Faisal Akram| Wikimedia Commons

The airlines offering a one- stop flight connection with the same airline and with the different or codeshare airline on the ATL- LGA  route include:

Airline Stopover at Total flight time Distance (miles)
Delta Air Lines & American Airlines Dayton DAY 4h 24m 985 
Richmond RIC 4h 24m 776  
Roanoke ROA 4h 25m 766
Philadelphia PHL 4h 25m 765
Delta Air Lines & United Airlines Dulles IAD 4h 27m 766
Pensacola PNS 9h 14m 1308
JetBlue Airways Boston BOS 6h 4m 1135
Frontier Airlines Raleigh/ Durham RDU 4h 45m 789 
Cleveland CLE 5h 6m 977

8. Atlanta- Fort Lauderdale

                                             Southwest Airlines, Boeing 737-800 in number 8 busiest domestic route in US, ATL-FLL.                                     Image: Tomás Del Coro| Wikimedia Commons
Route  Atlanta (ATL)- Fort Lauderdale (FLL)
Seats capacity 2,998,172
        Frontier Airlines, A321 neo offering its non-stop flight service in ATL- FLL route.                                     Image: Acroterion| Wikimedia Commons
Distance 865 miles
Approximate Flight Time 1 hour 53 minutes
                                                                 Airbus A320neo of Spirit Airlines flies in the domestic route in US.                                                                Image: Acroterion| Wikimedia Commons

The airlines operating non-stop flights on ATL- FLL route include:

Airline  Aircraft Approximate flight time
Frontier A321 neo 2h 3m
Spirit Airbus A320 neo 1h 54m
Southwest Boeing 737-800 (winglets) Passenger/BBJ2 1h 50m
Delta Boeing 757 Passenger 1h 53m
                                                               Delta’s Boeing 757 taxiing for take off in the domestic route in US.                                                                          Image: formulanone| Wikimedia Commons

The airlines offering a one- stop flight connection on the ATL- FLL route include:

Airline Stopover at Total flight time Total distance (miles)
Delta Air Lines & Silver Airways Tallahassee TLH 3h 45m 620
Tampa TPA 4h 606
Orlando MCO 4h 45m 585
Southwest Airlines New Orleans MSY 5h 3m 1103
Nashville BNA 5h 13m 1013

7.  New York La Guardia- Chicago O’Hare

                                                        Delta’s Embraer 175 in number 7 busiest domestic route, LGA- ORD.                                                       Image: Eric Salard| Wikimedia Commons
Route  New York La Guardia (LGA)- Chicago O’Hare (ORD)
Seats capacity 3,118,179
United Airlines’ Boeing 737-800 (Passenger) coming out of maintenance and proceeding to receive passengers of LGA- ORD route.                                                                                                                                                                                                                                Image: InShapphoWeTrust| Wikimedia Commons
Distance  1267 miles
Approximate Flight Time 2 hours 42 minutes
JetBlue Airways’ Embraer 190 in the sky. It is one of the aircraft offering its service in the LGA- ORD route.                                            Image: Ironhide 001| Wikimedia Commons

The airlines operating non-stop flights on LGA- ORD route include:

Airline Aircraft Approximate flight time
Delta Air Lines Embraer 175 2h 44m
United Airlines Boeing 737-800 Passenger 2h 41m
                                                 Air American Embraer 170 landing at the airport in LGA- ORD via RDU.                                            Image: Acroterion | Wikimedia Commons

The airlines offering a one- stop flight connection with the same airline and with the different or codeshare airline on the LGA- ORD   route include:

Airline Stopover at Total Flight Time Total Distance
Delta Air Lines & American Airlines Traverse City TVC 4h 30m 880
American Airlines Buffalo BUF 5h 4m 766
Spirit Airlines Detroit DTW 4h 45m 737
JetBlue Airways Boston BOS 6h 30m 1054

 

6. New York – Los Angeles

                                               Embraer 175, Alaska Airlines in the number 6 busiest domestic route, JFK- LAX.                                              Image: Mertbiol| Wikimedia Commons
Route  New York (JFK)- Los Angeles (LAX)
Seats capacity 3,158,654

 

Distance 2,470 miles
Approximate Flight Time More than 5 hours
                              Non-stop flight with Delta Air Lines in JFK- LAX route. Boeing 767-400 Passenger provides this service.               Image: Aero Icarus| Wikimedia Commons

The airlines operating non-stop flights on JFK- LAX route include:

Airline Aircraft  Approximate Flight time
American A321T (configured A321) 6h 24m
JetBlue Airbus A320 6h 19m
Delta Boeing 767 (mostly 767-300) 6h 26m
      Alaska Airlines’ Boeing 737-900 (winglets) in 1 stop route with the same airline.                                                      Image: Cory W. Watts| Wikimedia Commons

The airlines offering a one- stop flight connection with the same airline and with the different or codeshare airline on the JFK- LAX route include:

Airline Stopover at Total flight time Total distance (miles)
American Airlines & Alaska Airlines Las Vegas LAS 8h 45m 2492
Hawaiian Airlines Buffalo BUF 8h 2527
Sun Country Airlines Minneapolis 8h 38m 2572

5. Los Angeles- San Francisco

                                         Airbus A320 of Delta Air Lines in the number 5 busiest domestic route in US.                                                          Image: Tomás Del Coro| Wikimedia Commons

 

Route  Los Angeles (LAX)- San Francisco (SFO)
Seats capacity 3,158,918
                                                                Boeing 737-800 Passenger: Non-stop flight with American Airlines.                                                    Image: BriYZZ| Wikimedia Commons
Distance 652 miles
Approximate Flight Time 1 hour 28 minutes
                                                        A320neo of Frontier Airlines: 1 stop route service with the same airline.                                             Image: Acroterion| Wikimedia Commons

The airlines operating non-stop flights on LAX- SFO route include:

Airline Aircraft  Approximate flight time
Alaska  737 MAX 1h 29m
United Boeing 737 1h 32m
   LAX-SFO via LAS in Boeing 737-700 of Southwest Airlines.                                                              Image: Anthony 93921| Wikimedia Commons

The airlines offering a one- stop flight connection on the LAX- SFO  route include:

Airline Stopover at Total flight time Total distance (miles)
United Airlines Santa Barbara SBA  4h 28m 352
Delta Air lines & United Airlines Reno RNO 4h 33m 585 
Alaska Airlines Palm Springs PSP 1h 14m 532

 

4. Denver- Phoenix

Fairchild Dornier 328JET of Key Lime Air in number 4 busiest domestic route, DEN-PHX. This aircraft provides services via TEX.                                                                                                                                                                                                                                   Image: Konstantin von Wedelstaedt collection| Wikimedia Commons
Route  Denver (DEN)- Phoenix (PHX)
Seats capacity 3,214,473
 Canadair (Bombardier) Regional Jet 700 of American Airlines for service in DEN- PHX route via PSP.              Image: Aeroprints.com| Wikimedia commons

 

Distance 902 miles
Approximate Flight Time 2 hours 3 minutes
Embraer 175 of American Airlines at DEN-PHX route providing non stop flight services. Image: Maxime| Wikimedia Commons

The airlines operating non-stop flights on DEN- PHX route include:

Airline Aircraft  Approximate flight time
American A320 family jet, Embraer 175  2h 3m
United Airbus A321 neo, Boeing 737 2h 5m
        Airbus A321 of Delta Air Lines at service in DEN-PHX route via SLC.                                                        Image: Lars Hentschel| Wikimedia Commons

The airlines offering a one- stop flight connection with the same airline and with the different or codeshare airline on the DEN- PHX   route include:

Airline  Stopover at Total Flight time  Total distance (miles)
Key Lime Air  Telluride TEX 3h 10m 609
Frontier Airlines Las Vegas LAS 5h 9m 886
Salt Lake City SLC  5h 39m 902
Southwest Airlines El Paso ELP 5h 19m 915
United Airlines & American Airlines Durango DRO 4h 19m 604
Vin Vail EGE 4h 29m 636
Grand Junction GJT 4h 44m 652
Saint George SGU 5h 57m 782
Aspen ASE 4h 45m 619

 

3. Los Vegas- Los Angeles

Boeing 737-700 (winglets) Passenger/BBJ1 of Southwest Airlines provides non-stop flight service at number 3 busiest domestic route, LAS-LAX.                                                                                                                                                                                                          Image: Devanmayer1| Wikimedia Commons
Route  Los Vegas (LAS)- Los Angeles (LAX)
Seats capacity 3,354,849
Boeing 737MAX 8 Passenger of United Airlines provides non-stop flight service in LAS-LAX route. Image: 4300streetcar| Wikimedia Commons
Distance 369 miles 
Approximate Flight Time 1hour 18 minutes
                                                    Airbus A321 of Spirit Airlines provides non-stop flight service in LAS-LAX route.                                           Image: Aeroprints.com| Wikimedia Commons

The airlines operating non-stop flights on LAS- LAX  route include:

Airline Aircraft  Approximate flight time
Alaska 1h 20m
Spirit  1h 21m
                                     Embraer 175 of United Airlines provides service in LAS-LAX route via San Diego (SAN).                                Image: JacobAviation| Wikimedia Commons

The airlines offering a one- stop flight connection with the same airline and with the different or codeshare airline on the LAS- LAX route include:

Airline  Stopover at Total flight time Total distance (miles)
Delta Airlines & United Airlines San Diego SAN 3h 31m 237
Alaska Airlines & United Airlines San Luis Obispo SBP 3h 55m –

2. Honolulu- Kahului

         Boeing 717-200 of Hawaiian Airlines providing non-stop flight service at number 2 busiest domestic route: HNL-OGG.             Image: Timo Breidenstein| Wikimedia Commons
Route  Honolulu (HNL)- Kahului (OGG)
Seats capacity 3,369,790
                   Boeing 737MAX 8 Passenger of Southwest Airlines at non-stop flight service at busiest domestic route.               Image: Acroterion| Wikimedia commons
Distance 100 miles
Approximate Flight Time 41 minutes

The airlines operating non-stop flights on HNL-OGG route include:

Airline  Aircraft Approximate flight time
Southwest Boeing 737MAX 8 41m
Hawaiian Boeing 717-200 50m
Cessna (Light aircraft-single turboprop engine) of Southern Airways Express in the HNL-OGG route providing 1 stop flight service via MKK.                                                                                                                                                                                                             Image: FluhKerl2| Wikimedia Commons

The airlines offering a one- stop flight connection with the same airline and with the different or codeshare airline on the HNL- OGG   route include:

Airline  Stopover at Total Flight time  Total distance
Southern Airways Express Hoolehua MKK 2h 50m 100
Lanai LNY 3h 2m 107

1. Atlanta- Orlando

                      Silver Airways’ ATR 72 taking commercial flight in the number 1 busiest domestic route, ATL- MCO.                             Image: CC0 airplane FLL airport| Wikimedia Commons 
Route  Atlanta (ATL)- Orlando (MCO)
Seats capacity 3,474,713
                                Airbus A321-271NX of Spirit Airlines. It offers its service in 1 stop route with the same airline.                                 Image: Ad Meskens| Wikimedia Commons
Distance 700 miles 
Approximate Flight Time 1 hour and 33 minutes
Delta Air Lines' Embraer 175. It offers service in 1 stop routes with codeshare airline, United Airlines. Image:
                   Delta Air Lines’ Embraer 175. It offers service in 1 stop routes with codeshare airline, United Airlines.                                 Image: Tomás Del Coro| Wikimedia Commons

The airlines operating non-stop flights on ATL- MCO route include:

Airlines  Aircraft Approximate flight time
Frontier Airbus A320neo 1 hour 42 minutes
Spirit Airbus A320neo 1 hour 31 minutes
Southwest Boeing 737-800 (winglets) 1 hour 30 minutes
Delta 757, Boeing 767, Airbus A350 1 hour 33 minutes
Southwest Boeing 737-8 MAX N8800L preparing to take off at Baltimore Washington International Thurgood Marshall Airport, Maryland, USA. This aircraft provides non-stop flight service in ATL-MCO route.                                                                                   Image: Acroterion| Wikimedia Commons

The airlines offering a one- stop route with the same airline and with different airline or codeshare airline on the ATL- MCO  route include:

Airline Aircraft Total flight time Total distance (miles)
Spirit Airlines Fort Lauderdale FLL 4h 21m 764
American airlines Charlotte CLT 4h 43m 700
Miami MIA 4h 48m 793
Delta Air Lines & Silver Airways Pensacola PNS 4h 22m 654

 

The data about airlines operating on the route were taken from flightroutes.com and flightconnections.com.

Scroll to Top