Airports / Saint-Leonard Airport
Saint-Leonard Airport(CYSL)
Saint-Léonard, Canada
Last updated: Jan 31, 2026
Activity Summary
Airport Patterns
Emissions up 258% vs prior period — significantly busier than prior period
Charter/owner classification not available for this airport's flights
Spikes
Significant deviations from this airport's baseline in the selected period.
CO₂ Above Baseline
81t
Signals Detected
5
Highest Severity
High
Elevated activity May 17, 2025 – May 23, 2025 — 2 flights in 7 days vs baseline of 0
2 flights recorded in a 7-day window, exceeding the airport baseline of 0 flights per week by 408%.
23.5t CO₂
Elevated activity May 24, 2025 – May 30, 2025 — 2 flights in 7 days vs baseline of 0
2 flights recorded in a 7-day window, exceeding the airport baseline of 0 flights per week by 408%.
18.7t CO₂
Elevated activity May 10, 2025 – May 16, 2025 — 1 flights in 7 days vs baseline of 0
1 flights recorded in a 7-day window, exceeding the airport baseline of 0 flights per week by 154%.
5.5t CO₂
Single high-emission departure N492CA → CYSL on Jul 26, 2025 — 16.4t CO₂, 100% of day's total
Aircraft N492CA departing to CYSL produced 16.4t CO₂, representing 100% of all airport emissions on Jul 26, 2025.
16.4t CO₂
54-day gap in recorded activity ending Jul 26, 2025
Airport had 54 consecutive days with zero recorded flights before activity resumed on Jul 26, 2025.
16.4t CO₂
Route Map
CYSL to KBFI · 2,496 miles
Total Flights
1
Avg CO₂/Flight
12.2t
Total Emissions
12.2t CO₂
CYSL to KIAD · 745 miles
Total Flights
1
Avg CO₂/Flight
6.7t
Total Emissions
6.7t CO₂
CYSL to KLXT · 1,445 miles
Total Flights
1
Avg CO₂/Flight
6.7t
Total Emissions
6.7t CO₂
CYSL to KTEB · 534 miles
Total Flights
3
Avg CO₂/Flight
1.8t
Total Emissions
5.5t CO₂
CYSL to KFRG · 523 miles
Total Flights
1
Avg CO₂/Flight
5.0t
Total Emissions
5.0t CO₂
CYSL to CYGP · 191 miles
Total Flights
1
Avg CO₂/Flight
1.0t
Total Emissions
1.0t CO₂
Recent Flights
10 total flights recordedShowing most recent flights — not filtered by viewing period