Grant County International Airport
Grant County International Airport (KMWH/MWH) is a medium general aviation airport located in Moses Lake, WA, 67 mi north of Tri-Cities. It features 5 runways with the longest being 13,503 feet. SkyMeter has observed roughly 6 arrivals and 9 departures per day on average over the last 7 days.
Safety incidents
Last 7 days · 0 total
Current weather
Latest METAR observation
Top carriers
Share of flights
Top destinations
By flight count
Carriers
Communications Frequencies
2026-06-11| Type | Freq (MHz) | Hours |
|---|---|---|
| CTAF | 118.250 | — |
| TWR | 118.250 | 0600-2200 |
| TWR | 128.000 | 0600-2200 |
| TWR | 257.800 | 0600-2200 |
| GND | 121.900 | 0600-2200 |
| ATIS | 119.050 | 0600-2200 |
| APCH | 126.400 | 0600-2200 |
| APCH | 134.350 | 0600-2200 |
| APCH | 370.900 | 0600-2200 |
| APCH | 379.950 | 0600-2200 |
| UNICOM | 122.950 | — |
| ASOS | 119.050 | — |
| LCL/P | 118.250 | 0600-2200 |
| EMERG | 121.500 | 0600-2200 |
| MOSES LA | 122.400 | — |
| OTHER | 122.400 | — |
| MARLIN R | 126.100 | — |
| OTHER | 126.100 | — |
| LCL/P | 128.000 | 0600-2200 |
| EMERG | 243.000 | 0600-2200 |
| LCL/P | 257.800 | 0600-2200 |
| MARLIN R | 291.600 | — |
| OTHER | 291.600 | — |
Airport operations
- ARTCC:
- ZSE
- Mag var:
- 18° E
- Fuel:
- 100LL, A1+
Destination network
Great-circle routes from KMWH · last 7d
Hourly traffic
Avg movements per hour · local time · last 30 days
Top routes
Click any segment for full inspection
| Route | Operator | Flights | Avg enroute |
|---|---|---|---|
MWHBFI Seattle, US |
BOE
Boeing Commercial Airplane Group (Seattle |
5 | 0h 38m |
MWHK5W1 Wilson Creek, US |
BGR
Bridger Aerospace |
3 | 1h 49m |
MWHK1S5 Sunnyside, US |
SCP
Helicopter.Pl S.A. |
2 | 0h 21m |
MWH63S Colville, US |
SCP
Helicopter.Pl S.A. |
2 | 0h 29m |
MWHRDD Redding, US |
MAF
Aerolineas MAS |
2 | 2h 2m |
MWHGEG Spokane, US |
XCN
U.S Forest Service (Ogden |
2 | 2h 37m |
MWHEPH Ephrata, US |
BGR
Bridger Aerospace |
1 | 3h 19m |
MWHSJC San Jose, US |
EJA
Netjets Aviation |
1 | 1h 46m |
MWHKS40 Prosser, US |
TKR
FOR Firefighting Purposes- NOT TO BE Assigned |
1 | 0h 13m |
MWHWA15 Coulee City, US |
EJA
Netjets Aviation |
1 | 0h 6m |
MWHOLM Olympia, US |
TKR
FOR Firefighting Purposes- NOT TO BE Assigned |
1 | 1h 3m |
MWHK4SD Reno, US |
SCP
Helicopter.Pl S.A. |
1 | 2h 42m |
MWHALW Walla Walla, US |
SCP
Helicopter.Pl S.A. |
1 | 3h 35m |
MWHMFR Medford, US |
XCN
U.S Forest Service (Ogden |
1 | 3h 24m |
MWHNKX San Diego, US |
GRZ
GRZ |
1 | 2h 36m |
MWHW20 Moses Lake, US |
BGR
Bridger Aerospace |
1 | 4h 36m |
MWHMFR Medford, US |
TKR
FOR Firefighting Purposes- NOT TO BE Assigned |
1 | 1h 35m |



