Nonstop flight route between Perth, Western Australia, Australia and Sidney, Montana, United States:
Departure Airport:
(31°56'25"S by 115°58'0"E)
Arrival Airport:
(47°42'24"N by 104°11'32"W)
Distance from PER to SDY:
10,078.56 miles (16,219.83 km)
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Jump to:
- About this route
- PER Airport Information
- SDY Airport Information
- Facts about PER
- Facts about SDY
- Map of Nearest Airports to PER
- List of Nearest Airports to PER
- Map of Furthest Airports from PER
- List of Furthest Airports from PER
- Map of Nearest Airports to SDY
- List of Nearest Airports to SDY
- Map of Furthest Airports from SDY
- List of Furthest Airports from SDY
About this route:
A direct, nonstop flight between Perth Airport (PER), Perth, Western Australia, Australia and Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States would travel a Great Circle distance of 10,079 miles (or 16,220 kilometers).
A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the large distance between Perth Airport and Sidney-Richland Municipal Airport, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between Perth Airport and Sidney-Richland Municipal Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | PER / YPPH |
| Airport Name: | Perth Airport |
| Location: | Perth, Western Australia, Australia |
| GPS Coordinates: | 31°56'25"S by 115°58'0"E |
| Area Served: | Perth, Western Australia |
| Operator/Owner: | Government of Australia |
| Airport Type: | Public |
| Elevation: | 67 feet (20 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from PER |
| More Information: | PER Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | SDY / KSDY |
| Airport Name: | Sidney-Richland Municipal Airport |
| Location: | Sidney, Montana, United States |
| GPS Coordinates: | 47°42'24"N by 104°11'32"W |
| Area Served: | Sidney, Montana |
| Operator/Owner: | Sidney Richland Airport Authority |
| Airport Type: | Public |
| Elevation: | 1985 feet (605 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from SDY |
| More Information: | SDY Maps & Info |
Facts about Perth Airport (PER):
- Perth Airport handled 13,664,394 passengers last year.
- It was also on this day that Qantas commenced its Wallaby service using the Constellation Charles Kingsford Smith" from Sydney to South Africa via Western Australia, the Cocos Islands, and Mauritius.
- Perth Airport (PER) has 2 runways.
- The closest airport to Perth Airport (PER) is Jandakot Airport (JAD), which is located only 12 miles (19 kilometers) SSW of PER.
- The furthest airport from Perth Airport (PER) is L.F. Wade International Airport (BDA), which is nearly antipodal to Perth Airport (meaning Perth Airport is almost on the exact opposite side of the Earth from L.F. Wade International Airport), and is located 12,389 miles (19,938 kilometers) away in Ferry Reach (near Hamilton), Bermuda.
- Because of Perth Airport's relatively low elevation of 67 feet, planes can take off or land at Perth Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
- —Text of roadside plaque in memory of John Scott.
- At this time also, airline operators Qantas and Ansett set about on ambitious capital works programs to construct new domestic terminals for their respective airlines on the northern side of the terminal, where they still stand to this day.
Facts about Sidney-Richland Municipal Airport (SDY):
- The closest airport to Sidney-Richland Municipal Airport (SDY) is Sloulin Field International Airport (ISN), which is located 41 miles (67 kilometers) NE of SDY.
- Scheduled air service temporarily ceased on March 8, 2008, when Big Sky Airlines ended operations in bankruptcy.
- The furthest airport from Sidney-Richland Municipal Airport (SDY) is Sir Gaëtan Duval Airport (RRG), which is located 10,383 miles (16,711 kilometers) away in Rodrigues Island, Mauritius.
- Sidney-Richland Municipal Airport (SDY) has 2 runways.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11.97 miles (19.26 km) SSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia |     |
| 2 | 25.46 miles (40.97 km) W | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 3 | 100.76 miles (162.16 km) S | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 4 | 125.11 miles (201.34 km) SSW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 5 | 125.30 miles (201.66 km) NNW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 6 | 146.38 miles (235.57 km) SSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 7 | 156.14 miles (251.28 km) SE | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 8 | 160.95 miles (259.03 km) S | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 9 | 189.27 miles (304.60 km) N | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 10 | 229.84 miles (369.90 km) NNW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 11 | 233.07 miles (375.10 km) SSE | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 12 | 241.00 miles (387.85 km) N | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 13 | 241.85 miles (389.22 km) ENE | Windarling Airport (WRN) | Windarling, Australia | |
| 14 | 287.02 miles (461.92 km) NNE | Mount Magnet Airport (MMG) | Mount Magnet, Western Australia, Australia | |
| 15 | 310.86 miles (500.28 km) NNW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,389.01 miles (19,938.13 km) NE | L.F. Wade International Airport (BDA) | Ferry Reach (near Hamilton), Bermuda | |
| 2 | 11,732.80 miles (18,882.06 km) ENE | Billy Mitchell Airport (HNC) | Hatteras, North Carolina, United States | |
| 3 | 11,714.53 miles (18,852.66 km) ENE | Dare County Regional Airport (MEO) | Manteo, North Carolina, United States | |
| 4 | 11,713.53 miles (18,851.06 km) ENE | First Flight Airport (FFA) | Kill Devil Hills, North Carolina, United States | |
| 5 | 11,712.19 miles (18,848.89 km) NNE | Nantucket Memorial Airport (ACK) | Nantucket, Massachusetts, United States | |
| 6 | 11,701.82 miles (18,832.21 km) ENE | Pine Island Airport (DUF) | Corolla, North Carolina, United States | |
| 7 | 11,689.30 miles (18,812.06 km) NNE | Marthas Vineyard Airport (MVY) | Vineyard Haven, Massachusetts, United States | |
| 8 | 11,681.48 miles (18,799.47 km) NNE | Barnstable Municipal Airport (HYA) | Hyannis, Massachusetts, United States | |
| 9 | 11,681.47 miles (18,799.45 km) ENE | Elizabeth City Regional Airport (ECG) | Elizabeth City, North Carolina, United States | |
| 10 | 11,675.97 miles (18,790.61 km) NNE | Otis Air National Guard Base Coast Guard Air Station Cape Cod (FMH) | Falmouth, Massachusetts, United States | |
| 11 | 11,674.74 miles (18,788.63 km) ENE | Naval Air Station Oceana (NTU) | Virginia Beach, Virginia, United States | |
| 12 | 11,674.72 miles (18,788.60 km) NNE | Block Island State Airport (BID) | Block Island, Rhode Island, United States | |
| 13 | 11,671.86 miles (18,783.99 km) NE | Ocean City Municipal Airport (OCE) | Ocean City, Maryland, United States | |
| 14 | 11,669.22 miles (18,779.74 km) NNE | Montauk Airport (MTP) | Montauk, New York, United States | |
| 15 | 11,668.81 miles (18,779.08 km) NE | Wallops Flight Facility Airport (WAL) | Wallops Island, Virginia, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 41.33 miles (66.52 km) NE | Sloulin Field International Airport (ISN) | Williston, North Dakota, United States | |
| 2 | 48.66 miles (78.31 km) SW | Dawson Community Airport (GDV) | Glendive, Montana, United States | |
| 3 | 69.41 miles (111.70 km) WNW | L. M. Clayton Airport (OLF) | Wolf Point, Montana, United States | |
| 4 | 76.29 miles (122.77 km) NNW | Sher-Wood Airport (PWD) | Plentywood, Montana, United States | |
| 5 | 90.57 miles (145.76 km) SE | Dickinson Theodore Roosevelt Regional Airport (DIK) | Dickinson, North Dakota, United States | |
| 6 | 111.04 miles (178.70 km) SSE | Bowman Municipal Airport (BWM) | Bowman, North Dakota, United States | |
| 7 | 117.38 miles (188.91 km) WNW | Glasgow International Airport (GGW) | Glasgow, Montana, United States | |
| 8 | 118.10 miles (190.06 km) NNE | Estevan Regional Aerodrome (YEN) | Estevan, Saskatchewan, Canada | |
| 9 | 118.99 miles (191.50 km) SW | Miles City Airport (MLS) | Miles City, Montana, United States | |
| 10 | 131.42 miles (211.49 km) W | Jordan Airport (JDN) | Jordan, Montana, United States | |
| 11 | 139.74 miles (224.89 km) ENE | Minot Air Force Base (MIB) | Minot, North Dakota, United States | |
| 12 | 140.05 miles (225.38 km) ENE | Minot International Airport (MOT) | Minot, North Dakota, United States | |
| 13 | 174.07 miles (280.14 km) ESE | Bismarck Municipal Airport (BIS) | Bismarck, North Dakota, United States | |
| 14 | 189.51 miles (304.99 km) N | Regina International Airport (YQR) | Regina, Saskatchewan, Canada | |
| 15 | 191.53 miles (308.24 km) NNW | CFB Moose Jaw (YMJ) | Moose Jaw, Saskatchewan, Canada | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,383.49 miles (16,710.57 km) SSE | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,297.57 miles (16,572.29 km) SE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 3 | 10,290.39 miles (16,560.74 km) SE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 4 | 10,266.41 miles (16,522.14 km) SE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 10,218.50 miles (16,445.05 km) SE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 6 | 10,203.17 miles (16,420.36 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 7 | 10,179.29 miles (16,381.94 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 8 | 10,169.42 miles (16,366.06 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 9 | 10,153.64 miles (16,340.65 km) W | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 10 | 10,120.11 miles (16,286.69 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 11 | 10,113.85 miles (16,276.63 km) ESE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 12 | 10,100.83 miles (16,255.67 km) WSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 13 | 10,089.33 miles (16,237.15 km) WSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 14 | 10,078.56 miles (16,219.83 km) WSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 15 | 10,076.48 miles (16,216.49 km) W | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |