List of Airlines at (LAS) airport

Terminal 1

Advanced Air (Tel +1 800 393 7035)
Allegiant Air (Tel +1 702 505 8888)
American Airlines (Tel +1 800 433 7300)
Avelo Airlines (Tel +1 346 616 9500)
Delta Air Lines (Tel +1 800 221 1212)
Southern Airways Express (Tel +1 901 672 7820)
Southwest Airlines (Tel +1 800 435 9792)
Spirit Airlines (Tel +1 855 728 3555)

Terminal 3

Aeroméxico (Tel +1 800 237 6639)
Air Canada (Tel +1 888 247 2262)
Alaska Airlines (Tel +1 800 426 0333)
Breeze Airways
British Airways (Tel +1 800 247 9297)
Condor (Tel +1 866 960 7915)
Copa Airlines (Tel +1 800 359 2672)
Edelweiss Air (Tel +1 877 359 7947)
Eurowings Discover (Tel +1 845 709 8332)
Flair Airlines (Tel +1 204 285 0844)
Frontier Airlines (Tel +1 800 432 1359)
Hawaiian Airlines (Tel +1 800 367 5320)
JetBlue (Tel +1 800 538 2583)
KLM (Tel +1 866 434 0320)
Sun Country Airlines (Tel +1 866 359 6786)
Swoop (Tel +1 587 441 1001)
United Airlines (Tel +1 800 864 8331)
Virgin Atlantic (Tel +1 800 862 8621)
VivaAerobus (Tel +1 888 935 9848)
Volaris (Tel +1 866 988 3527)
WestJet (Tel +1 888 937 8538)

Many passengers do not know who to consult or make a claim to some doubts that arise before or after traveling, or any inconvenience that may occur. Listed below are topics that need to be consulted, coordinated or resolved directly with the airline.   Check in procedure   Documentation and visa required   Baggage weight limits, restricted and prohibited Items   Baggage and excess billing rates   Requirements for minors traveling alone or without parents   Special passengers needing prior coordination with the airline: people with disabilities, reduced mobility and pregnant women   Lost, delayed or damaged baggage reclaim   Possible flight's changes of date or cancellations   Confirmation of flight schedules (departures or arrivals)   Flight status report (for possible delays, cancellations, rescheduling)   In case your airline reschedules your flight, coordinate with the company for possible compensation, due to extra nights accomodation, food, flight connection lost, etc. Remember that it is always advisable to have a traveler's assistance insurance, in case the airline does not respond to any inconvenience that might happen (baggage lost or damaged, cancellation or flight delay, etc.)