Reference data only — not for flight planning or navigation. Verify with official sources (AIP, NOTAMs, ATC). Full disclaimer
Jefferson County International Airport (K0S9/TWD) — Port Townsend, United States
At a glance
- Operating hours
- 09:00–18:00 UTC
- Port of entry
- Yes
- Fuel
- 100LL
- Runways
- 09/27
- Elevation
- 108 ft
Times in UTC. Reference only: verify with the AIP and NOTAMs.
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69%
Data Complete
36 of 52 points
Missing: Frequencies, Fuel, Contacts
Section Breakdown
Basic Info
7/7
Runways
4/4
Frequencies
0/4
Operations
2/2
Fuel
0/1
Contacts
0/2
Additional Info
3/10
Data last updated:
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See a next to a field? Click it to confirm the info is still correct. Recently verified Outdated — please verify
Basic Airport Information
- ICAO: K0S9
- Name: Jefferson County International Airport
- Type: small_airport
- Category: Domestic
- Latitude: 48.053799
- Longitude: -122.810997
- Elevation: 108 ft
- Country: United States
- Municipality: Port Townsend
- IATA Code: TWD
- FAA Code: N/A
- FIR: N/A
- Timezone: America/Los_Angeles
- Distance from City: N/A km
- VFR: Yes
- IFR: No
Runways
Runway 09/27
- Designation: 09/27
- Dimensions: 914x23m
- Surface: ASPH-G
- PCN: N/A
- Lighting: Lighted
- NAVAIDs: N/A
- Approach Types: N/A
- Remarks: N/A
Frequencies
- Tower: N/A
- Ground: N/A
- Operations: N/A
- Traffic/Approach: N/A
- ATIS: N/A
Operation Hours
Monday
09:00
–
18:00
Tuesday
09:00
–
18:00
Wednesday
09:00
–
18:00
Thursday
09:00
–
18:00
Friday
09:00
–
18:00
Saturday
09:00
–
18:00
Sunday
09:00
–
18:00
- Extra Hours On Request: Not recorded
- Remarks: N/A
Contacts
- AIS Tel: N/A
- ARO Tel: N/A
- MET Tel: N/A
- Admin Tel: N/A
- Health Tel: N/A
- Police Tel: N/A
- Authorities Tel: N/A
- Website: N/A
- Remarks: N/A
Slots / PPR
- Slot Required: Not recorded
- PPR Required: Not recorded
- PPR Contact: N/A
- Remarks: N/A
Fuel Information
- Fuel (FAA, public use): 100LL Source: FAA NASR airport data, cycle 2026-10-01
Immigration
- Port of Entry: Yes Source: 19 CFR 122.13 List of international airports, 2026-10-13
- APIS Required: Not recorded
- GAR Required: Not recorded
Airport Services
No services listed for this airport yet.
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United States Permit Requirements
Fast
Landing: 1d
- Overflight Permit: No
- Landing Permit: Conditional
- Overflight Lead Time: N/A
- Landing Lead Time: 60 minutes minimum (eAPIS manifest before departure); recommend 24-48 hours for CBP port notification
Private / GA Operations:
No permits required for private non-revenue flights. eAPIS manifest mandatory for all international arrivals/departures.
Active NOTAMs
09/089
info
OBST TOWER LGT (ASR 1214257) 475549.10N1224458.30W (7.9NM SSE 0S9) 668.0FT (202.1FT AGL) U/S
2026-09-06 16:54 UTC
2026-12-05 17:54 UTC
08/067
info
OBST TOWER LGT (ASR 1065743) 480209.50N1224328.30W (3.6NM ESE 0S9) 559.1FT (213.9FT AGL) U/S
2026-08-05 14:53 UTC
2026-11-03 15:53 UTC
NOTAMs received from the FAA NOTAM feed (last message 2026-10-28 02:05 UTC). This list is built from the feed as NOTAMs are issued and is not checked against the FAA's full list: confirm with FAA NOTAM Search before flight.
View all NOTAMs on Map
Nearby Airports
Airport History
No milestones recorded for Jefferson County International Airport yet. Know when it opened, who built it or a notable event? Add it with a source.
Add a historical factFrequently Asked Questions
- What are the operating hours of K0S9?
- Jefferson County International Airport operates from 09:00 to 18:00.
- What fuel is available at K0S9?
- The FAA lists 100LL for public use at Jefferson County International Airport. Source: FAA NASR airport data, cycle 2026-10-01.
- Does K0S9 require landing permits?
- It depends on the flight. No permits required for private non-revenue flights. eAPIS manifest mandatory for all international arrivals/departures. Permit details for United States
- Where is K0S9 located?
- Jefferson County International Airport (K0S9) is located in Port Townsend, United States.
- What is the IATA code for K0S9?
- The IATA code for Jefferson County International Airport is TWD.
- How long is the runway at K0S9?
- The main runway at Jefferson County International Airport (09/27) measures 914x23m.
- Is K0S9 a port of entry?
- Yes. International flights can clear customs and immigration at Jefferson County International Airport. Source: 19 CFR 122.13 List of international airports, 2026-10-13.