Routes/Phoenix, AZ to St. Louis, MO

Phoenix, AZ to St. Louis, MO

Average one-way fare in 2026 Q1: $266 · 1262 nonstop miles · 966 passengers per day.

2026 Q1 fare$266

2025 Q1 fare$297

Change−$31

Passengers/day966

Distance1262 mi

The average fare a year earlier (2025 Q1) was $297. The change is $31 lower (10.5%).

The largest carrier on this route in 2026 Q1 was Southwest with 74% of passengers. The lowest-fare carrier was Southwest with 74% of passengers, at an average fare of $265.

All routes from Phoenix, AZ · All routes from St. Louis, MO

All quarters on this route

Quarter	Passengers/day	Avg. fare	Largest carrier	Largest share	Lowest-fare carrier
2024 Q1	855	$275	Southwest	69%	Southwest
2024 Q2	1046	$216	Southwest	65%	Southwest
2024 Q3	853	$196	Southwest	66%	Southwest
2024 Q4	900	$268	Southwest	69%	Southwest
2025 Q1	820	$297	Southwest	74%	Southwest
2025 Q2	795	$269	Southwest	74%	Southwest
2025 Q3	646	$235	Southwest	76%	Southwest
2025 Q4	940	$227	Southwest	74%	Southwest
2026 Q1	966	$266	Southwest	74%	Southwest

Source: U.S. Department of Transportation, Consumer Airfare Report Table 1, 2026 Q1. Figures are average one-way fares paid, including taxes and fees, for the quarter shown. Record: city markets 30466 and 31123; U.S. Department of Transportation, Domestic Airline Consumer Airfare Report, Table 1: top 1,000 contiguous-state city-pair markets (average one-way fare, passengers per day, largest carrier, lowest-fare carrier). Fetched 2026-09-27T00:40:04Z. Source data.