domestic · 2h 35m · 1,387 km

Denver to Los Angeles

4 airlines · 4 aircraft ranked

How we score →

Quick pick

Best economy: close call

Fly Southwest. It has 2 more inches of legroom.

If prices are similar, go with this one.

Data verified April 2026
1
UA
United FirstUnited · Boeing 737-900ER · 2012 cabin
recliner · 2-2 · 37" pitchReliable
2.8
Seat 1.2·Amenity 5.1

Select two airlines to compare head-to-head

Flying with family

  • Seatback screens on United. Southwest, Frontier, Spirit — bring your own device.
  • Most legroom: Southwest (32"). Least: Spirit (28"). That 4" difference matters with kids.
  • Power outlets on United, Southwest, Frontier — keep tablets charged.

Route insights

  • In economy, Southwest's Economy (open seating) (737-800) edges out the field with a 3.9/10.
  • United is the only carrier offering first class on this route, scoring 2.8/10.