Airports / Alaska / KTB
Thorne Bay Seaplane Base.
Thorne Bay, Alaska. A private-aviation gateway on the Bravo register.
5.0/5
Google rating
1 rating
0
Operators based
n/a
Elevation ft
Google rating
Google reviews
Nearest alternate
Field standing
10 nm
To the nearest alternate
Kasaan Seaplane Base (KXA), 6 fields within 50 nm.
Overview
Thorne Bay Seaplane Base, listed as KTB, is a seaplane base in Thorne Bay, Alaska. The airport supports scheduled airline service as well as private jet and charter movements.
KTB has no resident charter fleet; trips here are typically flown by operators repositioning from surrounding airports. Useful alternates include Kasaan Seaplane Base (KXA, 10 nm), Hollis Clark Bay Seaplane Base (HYL, 13 nm), and Klawock Airport (KLW, 19 nm). KTB offers a single 5,000-foot unpaved runway, which supports charter types through the turboprop class.
Quotes for flights out of KTB vary with aircraft type, repositioning, and schedule flexibility. Use the cost estimator to model a trip from KTB, or browse verified operators serving the area.
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Field capability
ICAO
KTB
IATA
KTB
FAA / Local
KTB
Elevation
n/a
Coordinates
55.6828° N · 132.5329° W
Airspace
G · GolfClass G, GolfUncontrolled field, no tower. Pilots self-announce and sequence themselves on the common traffic advisory frequency.Source: FAA NASR class airspace
Size
Seaplane
Scheduled svc
Yes
Runways & aircraft access
1 runway
longest 5,000 ft
- NW/SE5,000 ft × 2000 ftWaterUnlit
Which aircraft can operate here
vs longest runway 5,000 ft
KTB's 5,000 ft runway typically supports charter aircraft up to turboprops.
- Turboprop3,000 ft
- Light Jet3,500 ft
- Midsize Jet4,500 ft
- Super-Midsize Jet5,000 ft
- Heavy Jet5,500 ft
- VIP Airliner6,000 ft
Class minimums are sea-level planning rules of thumb. A specific aircraft's balanced-field length varies with weight, temperature, and field elevation. Confirm performance with the operator.
Access & alternates
Closest alternate fields by great-circle distance, every listing links to its own field brief.
- 10nmKXAKasaan Seaplane BaseKasaan
- 13nmHYLHollis Clark Bay Seaplane BaseHollis
- 19nmKLWKlawock AirportKlawock
- 22nmKCCCoffman Cove Seaplane BaseCoffman Cove
- 24nmCGACraig Seaplane BaseCraig
- 26nmNKINaukati Bay Seaplane BaseTuxekan Island
Location
Open the full mapKTB · Thorne Bay Seaplane Base · Thorne Bay, AK
Flight times from here
Approximate nonstop block times from KTB on a typical midsize charter jet. Faster classes trim these; add positioning and taxi for the real schedule.
| Destination | Distance | Block time |
|---|---|---|
| Seattle (SEA) | 623 nm | 1h 51m |
| Anchorage (ANC) | 637 nm | 1h 53m |
| Jackson Hole (JAC) | 1,107 nm | 2h 58m |
| San Francisco (SFO) | 1,160 nm | 3h 6m |
| Salt Lake City (SLC) | 1,205 nm | 3h 12m |
| Las Vegas (LAS) | 1,374 nm | 3h 36m |
| Vail / Eagle (EGE) | 1,399 nm | 3h 39m |
| Los Angeles (VNY) | 1,414 nm | 3h 41m |
Common questions
- What size private jets can use KTB?
- Thorne Bay Seaplane Base's longest runway is 5,000 ft, which typically supports charter aircraft up to turboprops. Lighter classes (turboprops, light and midsize jets) operate comfortably; confirm exact performance for a specific tail with the operator, since balanced-field length shifts with weight, temperature, and elevation.
- What is the longest runway at KTB?
- Thorne Bay Seaplane Base has one runway; the longest measures 5,000 ft.
- What is the nearest major airport to KTB?
- The closest alternate is Kasaan Seaplane Base (KXA), about 10 nm away, followed by Hollis Clark Bay Seaplane Base (HYL) at 13 nm. Operators often position aircraft between these fields depending on ramp space and availability.
- How long is a flight from KTB to major cities?
- Typical block times on a midsize jet: Seattle about 1h 51m (623 nm), Anchorage about 1h 53m (637 nm), Jackson Hole about 2h 58m (1,107 nm). Faster classes trim these times; add positioning and taxi for the real schedule.