Phoenix (PHX) to St Louis (STL)
Flight time
≈ 3h 19m
Bearing
67° NE
Phoenix (PHX) to St Louis (STL) is 1,259 miles (2,026 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies PHX–STL
Filed traffic dataIn June 2026, Southwest Airlines operated the most departures, one of 2 carriers flying nonstop PHX–STL; the Boeing 737 MAX 8 was the most common aircraft at 37% of departures; flights ran 86% full.
Departures
326
June 2026
Seats
53,872
both directions
Passengers
46,209
both directions
Load factor
85.8%
RPM ÷ ASM
Who flies PHX–STL?
Southwest Airlines operated the most nonstop PHX–STL departures in June 2026 (236), one of 2 carriers on the route.
- WN
236 departures · 39,096 seats
Share of departures72.4%86.4%
Load
- AA
90 departures · 14,776 seats
Share of departures27.6%84.1%
Load
What plane flies PHX–STL?
In June 2026, the Boeing 737 MAX 8 flew 37% of PHX–STL departures — more than any other aircraft type.
- Boeing 737 MAX 8
120 departures · 83.7% load
36.8% - Boeing 737-800
116 departures · 82.3% load
35.6% - Boeing 737-700
58 departures · 94.9% load
17.8% - Airbus A320
32 departures · 94.3% load
9.8%
How has PHX–STL traffic changed?
Nonstop PHX–STL departures fell from 331 in July 2025 to 326 in June 2026.
Monthly nonstop PHX–STL traffic, trailing 12 months through June 2026. Bars scale to the busiest month; months with no filed service show as zero.
July 2025
331 departures · 39,222 passengers
78.8%
Load
August 2025
330 departures · 39,828 passengers
74.3%
Load
September 2025
315 departures · 40,761 passengers
81.3%
Load
October 2025
400 departures · 52,627 passengers
78.6%
Load
November 2025
374 departures · 49,394 passengers
81.6%
Load
December 2025
415 departures · 54,582 passengers
82.0%
Load
January 2026
393 departures · 50,333 passengers
77.9%
Load
February 2026
385 departures · 48,348 passengers
76.6%
Load
March 2026
470 departures · 63,115 passengers
81.5%
Load
April 2026
415 departures · 50,489 passengers
78.8%
Load
May 2026
405 departures · 53,637 passengers
84.7%
Load
June 2026
326 departures · 46,209 passengers
85.8%
Load
By direction
Each direction is filed separately — they rarely match.
STL → PHX
87.6% full
165 departures · 23,671 passengers
PHX → STL
84.0% full
161 departures · 22,538 passengers
Nonstop PHX–STL traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through June 2026; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Phoenix (PHX) from St Louis (STL)?
PHX to STL is 1,259 miles (2,026 km / 1,094 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from PHX to STL?
A nonstop covers the 1,259-mile great-circle distance in roughly 3h 19m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies PHX–STL?
In June 2026, the Boeing 737 MAX 8 flew the largest share of departures (36.8%), followed by the Boeing 737-800 (35.6%).
What mileage do I earn flying PHX–STL?
Distance-based programs credit off the 1,259-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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