CarbonSkyIndex
AUS
BNA

Austin → Nashville

1h 47m avg · 755 miles · 656nm · Recently active route — first recorded March 2026

68.1t CO₂ · Last 30 DaysTypical

Last updated March 31st 2026 at 9:35 AM UTC

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Viewing period:
Compared to: preceding 30 days · 30 Jan 2026 – 1 Mar 2026
1 Mar 2026 – 31 Mar 2026·vs 30 Jan 2026 – 1 Mar 2026
Route Impact Summary
Total CO₂
68.1tons
Flights
13flights
Avg CO₂/Flight
3.9tons
CO₂/nm
0.0059t CO₂/nm
Fuel Burned
6Kgallons
67.9 tons CO₂ in selected period
Emissions spike detected
Emissions 65% above route average on 26 Mar

Route Patterns

Route activity broadly consistent with prior period — averaging 3.4t CO₂ per flight

68.1t
Total CO₂
3.4t
Avg CO₂/flight
20
Flights
Operator Profile
Charter
57%4 flights13.9t
Owner
43%3 flights11.4t

Mixed charter and owner-operated activity

Charter/owner data available for 35% of flights (13 unclassified)

Top Aircraft Models
Bombardier Challenger 30020.0t CO₂
5 flights · avg 4.0t/flight · 29%
Gulfstream GIV7.5t CO₂
1 flight · avg 7.5t/flight · 11%
Cessna Citation XLS6.3t CO₂
2 flights · avg 3.2t/flight · 9%
Bombardier Learjet 455.7t CO₂
2 flights · avg 2.8t/flight · 8%
Embraer Phenom 3005.6t CO₂
2 flights · avg 2.8t/flight · 8%
📍International route·medium-haul route · 656nm

Spikes

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

CO₂ Above Baseline

3t

Signals Detected

1

Highest Severity

Medium

Emissions
Medium
New4 Mar 2026
Emissions spike on 4 Mar 2026 — 5.9t CO₂ vs route daily average of 2.5t (141% above)
5.9t CO₂ on 4 Mar 2026 — 141% above route average

Aircraft Flying This Route

Aircraft Flying This Route
N673PP·Bombardier Challenger 300
8.3t CO₂ · avg 4.1t/flight · Last seen 27 Mar 2026
N860CMCharter·Bombardier Challenger 300
7.9t CO₂ · avg 4.0t/flight · Last seen 5 Mar 2026
N534CC·Cessna Citation XLS
3.2t CO₂ · avg 3.2t/flight · Last seen 11 Mar 2026
N504ABCharter·Bombardier Learjet 60
3.1t CO₂ · avg 3.1t/flight · Last seen 4 Mar 2026
N358FXCharter·Embraer Phenom 300
2.9t CO₂ · avg 2.9t/flight · Last seen 4 Mar 2026

Recent Flights

20 total flights recorded

Showing most recent flights — not filtered by viewing period

Mar 30, 2026N613FXEmbraer Praetor 600·3.7t CO₂Typical1h 40m→
Mar 30, 2026N392FXEmbraer Phenom 300·2.8t CO₂Typical2h 0m→
Mar 27, 2026N673PPBombardier Challenger 300·4.3t CO₂Above avg1h 53m→
Mar 26, 2026N673PPBombardier Challenger 300·3.9t CO₂Typical1h 44m→
Mar 26, 2026N41MBDassault Falcon 900·4.1t CO₂Typical1h 40m→
Mar 23, 2026C-FASRCessna Citation CJ2·2.6t CO₂Below avg2h 7m→
Mar 22, 2026N770TDBombardier Learjet 45·2.8t CO₂Typical1h 45m→
Mar 21, 2026N557FXBombardier Challenger 300·3.8t CO₂Typical1h 40m→
Mar 20, 2026N936AMGulfstream GIV·7.5t CO₂Above avg1h 51m→
Mar 19, 2026N557SLCessna Citation Sovereign·3.9t CO₂Typical1h 51m→
Showing 10 of 20 flights