Airports / Saint Louis Regional Airport

Saint Louis Regional Airport(KALN)

Alton/St Louis, United States

Last updated: Mar 30, 2026

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Viewing period:
Compared to: preceding 12 months · Apr 2024 – Apr 2025
Apr 2025 – Mar 2026·vs Apr 2024 – Apr 2025

Activity Summary

1,354.9
Tons CO2 Total
2.2
Avg CO2/Flight
591
Flights Total
Emissions Intensity0.01t CO₂/nm
406.7 tons CO2 in selected period

Airport Patterns

Emissions up 280% vs prior period — significantly busier than prior period

407t
Total CO₂
2.2t
Avg CO₂/flight
591
Flights
Operator Profile

Charter/owner classification not available for this airport's flights

Emissions
>300%
311t → 1,355t CO₂
CO₂ Intensity
15%
1.9t → 2.2t per departure
Flight Count
Prior data incomplete
New Routes
225
868t CO₂ combined
Dropped Routes
38
Prior period only
New Aircraft
403
403 new tail numbers
Top Destinations
Las Vegas15.6t CO₂
2 flights · avg 7.8t/flight
Santa Ana14.5t CO₂
1 flight · avg 14.5t/flight
Dallas14.4t CO₂
5 flights · avg 2.9t/flight
Boca Raton13.7t CO₂
2 flights · avg 6.9t/flight
Austin13.1t CO₂
4 flights · avg 3.3t/flight

Spikes

Significant deviations from this airport's baseline in the selected period.

CO₂ Above Baseline

183t

Signals Detected

4

Highest Severity

High

MediumSep 2, 2025 – Sep 8, 2025

Elevated activity Sep 2, 2025 – Sep 8, 2025 — 24 flights in 7 days vs baseline of 11

24 flights recorded in a 7-day window, exceeding the airport baseline of 11 flights per week by 111%.

57.3t CO₂

MediumNov 8, 2025 – Nov 14, 2025

Elevated activity Nov 8, 2025 – Nov 14, 2025 — 24 flights in 7 days vs baseline of 11

24 flights recorded in a 7-day window, exceeding the airport baseline of 11 flights per week by 111%.

51.3t CO₂

MediumNov 17, 2025 – Nov 23, 2025

Elevated activity Nov 17, 2025 – Nov 23, 2025 — 25 flights in 7 days vs baseline of 11

25 flights recorded in a 7-day window, exceeding the airport baseline of 11 flights per week by 119%.

48.4t CO₂

HighOct 5, 2025

Single high-emission departure PR-ADB → KALN on Oct 5, 2025 — 26.4t CO₂, 82% of day's total

Aircraft PR-ADB departing to KALN produced 26.4t CO₂, representing 82% of all airport emissions on Oct 5, 2025.

26.4t CO₂

Route Map

Top Routes by Emissions
Alton/St LouisLas Vegas

KALN to KHND · 1,387 miles

Total Flights

2

Avg CO₂/Flight

7.8t

Total Emissions

15.6t CO₂

Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Alton/St LouisSanta Ana

KALN to KSNA · 1,583 miles

Total Flights

1

Avg CO₂/Flight

14.5t

Total Emissions

14.5t CO₂

Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Alton/St LouisDallas

KALN to KADS · 558 miles

Total Flights

5

Avg CO₂/Flight

2.9t

Total Emissions

14.4t CO₂

Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Alton/St LouisBoca Raton

KALN to KBCT · 1,038 miles

Total Flights

2

Avg CO₂/Flight

6.9t

Total Emissions

13.7t CO₂

Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Alton/St LouisAustin

KALN to KAUS · 740 miles

Total Flights

4

Avg CO₂/Flight

3.3t

Total Emissions

13.1t CO₂

Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Alton/St LouisSt Louis

KALN to KSUS · 36 miles

Total Flights

12

Avg CO₂/Flight

1.0t

Total Emissions

11.9t CO₂

Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
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Aircraft Using This Airport
View All Aircraft
N327JA·Cessna Citation Excel
21.4t CO₂ · avg 0.7t/visit · 31 visits · Last seen 2 Mar 2026
N999V·Bombardier Global 6000/6500
14.5t CO₂ · avg 7.3t/visit · 2 visits · Last seen 28 Mar 2026
N4139H·Gulfstream GV
9.6t CO₂ · avg 9.6t/visit · 1 visit · Last seen 26 Mar 2026
N383DJCharter·Gulfstream GIV
9.5t CO₂ · avg 4.8t/visit · 2 visits · Last seen 16 Feb 2026
N154CCharter·Gulfstream GIV
8.6t CO₂ · avg 4.3t/visit · 2 visits · Last seen 17 Jun 2025
N186QSCharter·Bombardier Global 7500
8.4t CO₂ · avg 8.4t/visit · 1 visit · Last seen 15 Apr 2025
N200SGCharter·Dassault Falcon 50
8.4t CO₂ · avg 8.4t/visit · 1 visit · Last seen 25 Jul 2025
N520QSCharter·Cessna Citation Latitude
8.0t CO₂ · avg 4.0t/visit · 2 visits · Last seen 4 Nov 2025
N530FXCharter·Bombardier Challenger 300
7.9t CO₂ · avg 4.0t/visit · 2 visits · Last seen 12 Mar 2026
N103SWCharter·Bombardier Global 6000/6500
7.8t CO₂ · avg 7.8t/visit · 1 visit · Last seen 6 Mar 2026
Page 1 of 43

Recent Flights

10 total flights recorded

Showing most recent flights — not filtered by viewing period