# Rosario Seaplane Base (RSJ / W49)

**Rosario Seaplane Base** (IATA: RSJ, FAA: W49) is a seaplane base in Rosario, Washington, United States. It opened in Jan 1948. It has 2 runways; the longest is 10,000 ft (3,048 m).

Web page: https://dromopedia.com/airports/w49

## At a glance

- IATA / ICAO: RSJ / —
- FAA: W49
- Type: Seaplane base
- Serves: Rosario, Washington, United States
- Opened: Jan 1948
- Elevation: 0 ft / 0 m
- Coordinates: 48.6457, -122.8680
- Runways: 2
- Longest runway: 10,000 ft / 3,048 m
- Time zone: UTC-8/-7 · America/Los_Angeles
- Wikipedia: https://en.wikipedia.org/wiki/Rosario_Seaplane_Base (4 languages)
- Wikidata: https://www.wikidata.org/wiki/Q7367420
- Weather station: KORS
- Ident: W49

## Timeline

- Jan 1948: Rosario Seaplane Base opens.

## Runways

| Ident | Length | Width | Surface | True headings | Lighted |
| --- | --- | --- | --- | --- | --- |
| 16W/34W | 10,000 ft / 3,048 m | 1,000 ft / 305 m | Water |  |  |
| 07W/25W | 2,500 ft / 762 m | 1,000 ft / 305 m | Water |  |  |

## Routes

1 destination in 1 country. From the airport's Wikipedia article.

### Year-round (1)

- [LKE](https://dromopedia.com/airports/w55.md) Kenmore Air Harbor Seaplane Base · United States · 75 mi / 120 km · Kenmore Air

## Airlines

The figure is how many destinations each airline flies from RSJ, as the routes above have them. Hubs from Wikidata.

### Passenger (1)

- M5 [Kenmore Air](https://dromopedia.com/airlines/kenmore-air) · 1

## Nearby airports

- [ESD](https://dromopedia.com/airports/kors.md) Orcas Island Airport · 4.7 mi / 7.6 km
- [FRD](https://dromopedia.com/airports/kfhr.md) Friday Harbor Airport · 11 mi / 18 km
- [BLI](https://dromopedia.com/airports/kbli.md) Bellingham International Airport · 18 mi / 29 km
- [NUW](https://dromopedia.com/airports/knuw.md) Whidbey Island Naval Air Station (Ault Field) · 23 mi / 36 km
- [YYJ](https://dromopedia.com/airports/cyyj.md) Victoria International Airport · 26 mi / 41 km
- [YDT](https://dromopedia.com/airports/czbb.md) Boundary Bay Airport · 30 mi / 49 km

## Sources

- [FAA NASR](https://www.faa.gov/air_traffic/flight_info/aeronav/aero_data/NASR_Subscription/): US airport data: FAA National Airspace System Resources (Public Domain (US Government))
- [NOAA Aviation Weather Center](https://aviationweather.gov/data/api/): Weather data: NOAA Aviation Weather Center (Public Domain (US Government))
- [OurAirports](https://ourairports.com/data/): Airport data from OurAirports (Public Domain)
- [Wikidata](https://www.wikidata.org): Structured data from Wikidata (CC0 1.0)
- [Wikipedia: “Rosario Seaplane Base”](https://en.wikipedia.org/w/index.php?title=Rosario_Seaplane_Base&oldid=1362756748), revision of 6 Jul 2026 (CC BY-SA 4.0)
- [timezone-boundary-builder](https://github.com/evansiroky/timezone-boundary-builder): Time zone boundaries © OpenStreetMap contributors, timezone-boundary-builder (ODbL 1.0)
- Every figure with its source: https://dromopedia.com/airports/w49/data