Airports / Friday Harbor Airport
Friday Harbor Airport(KFHR)
Friday Harbor, United States
Last updated: Mar 29, 2026
Activity Summary
Airport Patterns
Emissions up 2445% 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
37t
Signals Detected
5
Highest Severity
High
Elevated activity May 21, 2025 – May 27, 2025 — 6 flights in 7 days vs baseline of 2
6 flights recorded in a 7-day window, exceeding the airport baseline of 2 flights per week by 173%.
12.4t CO₂
Elevated activity Jun 26, 2025 – Jul 2, 2025 — 5 flights in 7 days vs baseline of 2
5 flights recorded in a 7-day window, exceeding the airport baseline of 2 flights per week by 127%.
7.8t CO₂
Elevated activity Jul 3, 2025 – Jul 9, 2025 — 6 flights in 7 days vs baseline of 2
6 flights recorded in a 7-day window, exceeding the airport baseline of 2 flights per week by 173%.
5.9t CO₂
Single high-emission departure N525CE → KFHR on Feb 27, 2026 — 9.6t CO₂, 100% of day's total
Aircraft N525CE departing to KFHR produced 9.6t CO₂, representing 100% of all airport emissions on Feb 27, 2026.
9.6t CO₂
23-day gap in recorded activity ending Nov 5, 2025
Airport had 23 consecutive days with zero recorded flights before activity resumed on Nov 5, 2025.
0.9t CO₂
Route Map
KFHR to KPAE · 55 miles
Total Flights
15
Avg CO₂/Flight
0.5t
Total Emissions
8.1t CO₂
KFHR to KBFI · 76 miles
Total Flights
6
Avg CO₂/Flight
0.9t
Total Emissions
5.6t CO₂
KFHR to KOAK · 747 miles
Total Flights
1
Avg CO₂/Flight
2.6t
Total Emissions
2.6t CO₂
KFHR to KVCB · 703 miles
Total Flights
1
Avg CO₂/Flight
2.5t
Total Emissions
2.5t CO₂
KFHR to KPSC · 240 miles
Total Flights
2
Avg CO₂/Flight
0.7t
Total Emissions
1.4t CO₂
KFHR to KSUN · 543 miles
Total Flights
1
Avg CO₂/Flight
1.2t
Total Emissions
1.2t CO₂
Recent Flights
10 total flights recordedShowing most recent flights — not filtered by viewing period