Airports / Horace Williams Airport

Horace Williams Airport(KIGX)

Durham, United States

Last updated: Mar 27, 2026

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Viewing period:
Compared to: preceding 12 months · May 2024 – May 2025
May 2025 – Apr 2026·vs May 2024 – May 2025· Emissions increasing vs prior period

Activity Summary

363.4
Tons CO2 Total
2.0
Avg CO2/Flight
185
Flights Total
Emissions Intensity0.01t CO₂/nm
362.5 tons CO2 in selected period

Airport Patterns

Emissions up 291% vs prior period — significantly busier than prior period

362t
Total CO₂
2.0t
Avg CO₂/flight
185
Flights
Operator Profile

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

Emissions
292%
93t → 363t CO₂
CO₂ Intensity
28%
2.7t → 2.0t per departure
Flight Count
Prior data incomplete
New Routes
93
289t CO₂ combined
Dropped Routes
9
Prior period only
New Aircraft
157
157 new tail numbers
Top Destinations
San Diego18.9t CO₂
1 flight · avg 18.9t/flight
San Francisco16.4t CO₂
1 flight · avg 16.4t/flight
Atlanta14.9t CO₂
9 flights · avg 1.7t/flight
Teterboro13.8t CO₂
6 flights · avg 2.3t/flight
Hayward13.6t CO₂
1 flight · avg 13.6t/flight

Spikes

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

CO₂ Above Baseline

60t

Signals Detected

4

Highest Severity

High

HighSep 23, 2025 – Sep 29, 2025

Elevated activity Sep 23, 2025 – Sep 29, 2025 — 12 flights in 7 days vs baseline of 4

12 flights recorded in a 7-day window, exceeding the airport baseline of 4 flights per week by 206%.

11.2t CO₂

MediumSep 16, 2025 – Sep 22, 2025

Elevated activity Sep 16, 2025 – Sep 22, 2025 — 8 flights in 7 days vs baseline of 4

8 flights recorded in a 7-day window, exceeding the airport baseline of 4 flights per week by 104%.

25.2t CO₂

MediumOct 12, 2025 – Oct 18, 2025

Elevated activity Oct 12, 2025 – Oct 18, 2025 — 8 flights in 7 days vs baseline of 4

8 flights recorded in a 7-day window, exceeding the airport baseline of 4 flights per week by 104%.

4.7t CO₂

HighJun 30, 2025

Single high-emission departure N999AH → KSAN on Jun 30, 2025 — 18.9t CO₂, 100% of day's total

Aircraft N999AH departing to KSAN produced 18.9t CO₂, representing 100% of all airport emissions on Jun 30, 2025.

18.9t CO₂

Route Map

Top Routes by Emissions
DurhamSan Diego

KIGX to KSAN · 2,173 miles

Total Flights

1

Avg CO₂/Flight

18.9t

Total Emissions

18.9t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
DurhamSan Francisco

KIGX to KSFO · 2,379 miles

Total Flights

1

Avg CO₂/Flight

16.4t

Total Emissions

16.4t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
DurhamAtlanta

KIGX to KPDK · 329 miles

Total Flights

9

Avg CO₂/Flight

1.7t

Total Emissions

14.9t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
DurhamTeterboro

KIGX to KTEB · 434 miles

Total Flights

6

Avg CO₂/Flight

2.3t

Total Emissions

13.8t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
DurhamHayward

KIGX to KHWD · 2,364 miles

Total Flights

1

Avg CO₂/Flight

13.6t

Total Emissions

13.6t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
DurhamSanta Ana

KIGX to KSNA · 2,192 miles

Total Flights

1

Avg CO₂/Flight

13.3t

Total Emissions

13.3t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
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Aircraft Using This Airport
View All Aircraft
N999AHCharter·Gulfstream GIV
18.9t CO₂ · avg 18.9t/visit · 1 visit · Last seen 30 Jun 2025
N993JCCharter·Embraer Legacy 600/650
16.4t CO₂ · avg 16.4t/visit · 1 visit · Last seen 3 Mar 2026
N271AC·Dassault Falcon 900
13.6t CO₂ · avg 13.6t/visit · 1 visit · Last seen 8 May 2025
N144PACharter·Cessna Citation X
13.3t CO₂ · avg 13.3t/visit · 1 visit · Last seen 30 Jul 2025
N561SRCharter·Cessna Citation V Ultra
11.7t CO₂ · avg 11.7t/visit · 1 visit · Last seen 21 Sept 2025
N855FC·Bombardier Challenger 300
10.1t CO₂ · avg 10.1t/visit · 1 visit · Last seen 14 Jun 2025
N300KHCharter·Bombardier Challenger 300
9.4t CO₂ · avg 9.4t/visit · 1 visit · Last seen 19 Mar 2026
N905VRCharter·Cessna Citation X
8.3t CO₂ · avg 8.3t/visit · 1 visit · Last seen 4 Oct 2025
N824DMCharter·Cessna Citation Sovereign
7.4t CO₂ · avg 7.4t/visit · 1 visit · Last seen 14 Aug 2025
N674WM·Dassault Falcon 7X
6.7t CO₂ · avg 6.7t/visit · 1 visit · Last seen 22 Aug 2025
Page 1 of 17

Recent Flights

10 total flights recorded

Showing most recent flights — not filtered by viewing period