Nonstop flight route between Sion, Switzerland and Tununak, Alaska, United States:
Departure Airport:
(46°13'10"N by 7°19'36"E)
Arrival Airport:
(60°34'32"N by 165°16'18"W)
Distance from SIR to TNK:
5,046.25 miles (8,121.13 km)
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- About this route
- SIR Airport Information
- TNK Airport Information
- Facts about SIR
- Facts about TNK
- Map of Nearest Airports to SIR
- List of Nearest Airports to SIR
- Map of Furthest Airports from SIR
- List of Furthest Airports from SIR
- Map of Nearest Airports to TNK
- List of Nearest Airports to TNK
- Map of Furthest Airports from TNK
- List of Furthest Airports from TNK
About this route:
A direct, nonstop flight between Sion Airport (SIR), Sion, Switzerland and Tununak Airport (TNK), Tununak, Alaska, United States would travel a Great Circle distance of 5,046 miles (or 8,121 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 Sion Airport and Tununak 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 Sion Airport and Tununak Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | SIR / LSGS |
| Airport Names: |
|
| Location: | Sion, Switzerland |
| GPS Coordinates: | 46°13'10"N by 7°19'36"E |
| Area Served: | Sion, Switzerland |
| Elevation: | 1585 feet (483 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from SIR |
| More Information: | SIR Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | TNK / |
| Airport Names: |
|
| Location: | Tununak, Alaska, United States |
| GPS Coordinates: | 60°34'32"N by 165°16'18"W |
| Area Served: | Tununak, Alaska |
| Operator/Owner: | State of Alaska DOT&PF - Central Region |
| Airport Type: | Public |
| Elevation: | 14 feet (4 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from TNK |
| More Information: | TNK Maps & Info |
Facts about Sion Airport (SIR):
- The furthest airport from Sion Airport (SIR) is Chatham Islands (CHT), which is nearly antipodal to Sion Airport (meaning Sion Airport is almost on the exact opposite side of the Earth from Chatham Islands), and is located 12,188 miles (19,615 kilometers) away in Waitangi, Chatham Islands, New Zealand.
- Sion Airport (SIR) has 2 runways.
- In addition to being known as "Sion Airport", other names for SIR include "Aéroport de Sion" and "LSGS /LSMS".
- The closest airport to Sion Airport (SIR) is Aosta Valley Airport (AOT), which is located 33 miles (54 kilometers) S of SIR.
Facts about Tununak Airport (TNK):
- Tununak Airport (TNK) currently has only 1 runway.
- The furthest airport from Tununak Airport (TNK) is Cape Town International Airport (CPT), which is located 10,590 miles (17,043 kilometers) away in Cape Town, South Africa.
- In addition to being known as "Tununak Airport", another name for TNK is "4KA".
- Because of Tununak Airport's relatively low elevation of 14 feet, planes can take off or land at Tununak 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.
- The closest airport to Tununak Airport (TNK) is Toksook Bay Airport (OOK), which is located only 7 miles (11 kilometers) ESE of TNK.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 33.31 miles (53.61 km) S | Aosta Valley Airport (AOT) | Aosta, Italy |     |
| 2 | 40.64 miles (65.41 km) NW | Lausanne Airport (QLS) | Lausanne, Switzerland | |
| 3 | 42.49 miles (68.38 km) SW | Megève Aerodrome (MVV) | Megève, France | |
| 4 | 48.55 miles (78.14 km) N | Bern Airport (BRN) | Bern, Switzerland | |
| 5 | 50.66 miles (81.53 km) W | Annemasse Aerodrome (QNJ) | Annemasse, France | |
| 6 | 58.20 miles (93.66 km) W | Geneva International Airport (GVA) | Geneva, Switzerland | |
| 7 | 65.86 miles (106.00 km) SSW | Courchevel Airport (CVF) | Courchevel, France | |
| 8 | 66.71 miles (107.36 km) SSW | Méribel Airport (MFX) | Meribel, France | |
| 9 | 71.98 miles (115.84 km) SSE | Turin Airport (TRN) | Turin, Italy | |
| 10 | 75.96 miles (122.25 km) NE | Emmen Swiss Air Base (EML) | Emmen, Lucerne, Switzerland | |
| 11 | 77.30 miles (124.41 km) E | Lugano Airport (LUG) | Lugano, Agno, Switzerland | |
| 12 | 78.50 miles (126.34 km) ESE | Milan Malpensa Airport (MXP) | Milano, Italy | |
| 13 | 80.19 miles (129.05 km) WSW | Chambéry Airport (CMF) | Chambéry, France | |
| 14 | 90.13 miles (145.05 km) NW | Besançon - La Vèze Aerodrome (QBQ) | Besançon / La Vèze, France | |
| 15 | 91.13 miles (146.66 km) NNW | Montbéliard - Courcelles Aerodrome (XMF) | Montbéliard, France | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,188.10 miles (19,614.80 km) SE | Chatham Islands (CHT) | Waitangi, Chatham Islands, New Zealand | |
| 2 | 11,749.62 miles (18,909.14 km) ESE | Hood Aerodrome (MRO) | Masterton, New Zealand | |
| 3 | 11,732.10 miles (18,880.94 km) SE | Hawke's Bay Airport (NPE) | Napier, New Zealand | |
| 4 | 11,730.83 miles (18,878.89 km) SE | Gisborne Airport (GIS) | Gisborne, New Zealand | |
| 5 | 11,727.65 miles (18,873.78 km) ESE | Wellington International Airport (WLG) | Wellington, New Zealand | |
| 6 | 11,721.62 miles (18,864.07 km) ESE | Palmerston North Airport (PMR) | Palmerston North, New Zealand | |
| 7 | 11,719.38 miles (18,860.46 km) ESE | Kapiti Coast Airport (PPQ) | Paraparaumu Beach, New Zealand | |
| 8 | 11,710.67 miles (18,846.45 km) ESE | Kaikoura Aerodrome (KBZ) | Kaikoura, New Zealand | |
| 9 | 11,693.26 miles (18,818.43 km) ESE | Woodbourne Airport (BHE) | Blenheim, New Zealand | |
| 10 | 11,689.24 miles (18,811.97 km) E | Christchurch International Airport (CHC) | Christchurch, New Zealand | |
| 11 | 11,681.75 miles (18,799.91 km) ESE | Wanganui Airport (WAG) | Wanganui, New Zealand | |
| 12 | 11,666.63 miles (18,775.57 km) SE | Taupo AirportTe Papa Waka Rererangi o Taupō (TUO) | Taupo, New Zealand | |
| 13 | 11,663.50 miles (18,770.54 km) E | Ashburton Aerodrome (ASG) | Ashburton, New Zealand | |
| 14 | 11,656.56 miles (18,759.37 km) ESE | Nelson AirportTe Papa Waka Rererangi o Whakatū (NSN) | Nelson, New Zealand | |
| 15 | 11,654.53 miles (18,756.10 km) SE | Whakatane Airport (WHK) | Whakatane, New Zealand | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 6.69 miles (10.77 km) ESE | Toksook Bay Airport (OOK) | Toksook Bay, Alaska, United States | |
| 2 | 20.71 miles (33.32 km) ESE | Nightmute Airport (NME) | Nightmute, Alaska, United States | |
| 3 | 32.93 miles (52.99 km) NE | Newtok Airport (WWT) | Newtok, Alaska, United States | |
| 4 | 36.82 miles (59.26 km) WSW | Mekoryuk Airport (MYU) | Mekoryuk, Alaska, United States | |
| 5 | 44.76 miles (72.03 km) SE | Chefornak Airport (CYF) | Chefornak, Alaska, United States | |
| 6 | 61.49 miles (98.95 km) SE | Kipnuk Airport (KPN) | Kipnuk, Alaska, United States | |
| 7 | 67.60 miles (108.78 km) N | Chevak Airport (VAK) | Chevak, Alaska, United States | |
| 8 | 71.76 miles (115.49 km) NNW | Hooper Bay Airport (HPB) | Hooper Bay, Alaska, United States | |
| 9 | 86.98 miles (139.98 km) NNW | Cape Romanzof Air Force Station Cape Romanzof Long Range Radar Site (CZF) | Cape Romanzof, Alaska, United States | |
| 10 | 88.29 miles (142.10 km) N | Scammon Bay Airport (SCM) | Scammon Bay, Alaska, United States | |
| 11 | 90.28 miles (145.29 km) E | Tuntutuliak Airport (WTL) | Tuntutuliak, Alaska, United States | |
| 12 | 92.26 miles (148.49 km) ESE | Kongiganak Airport (KKH) | Kongiganak, Alaska, United States | |
| 13 | 95.07 miles (152.99 km) ENE | Kasigluk Airport (KUK) | Kasigluk, Alaska, United States | |
| 14 | 98.33 miles (158.25 km) ENE | Nunapitchuk Airport (NUP) | Nunapitchuk, Alaska, United States | |
| 15 | 103.29 miles (166.23 km) ENE | Atmautluak Airport (ATT) | Atmautluak, Alaska, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,590.30 miles (17,043.40 km) S | Cape Town International Airport (CPT) | Cape Town, South Africa | |
| 2 | 10,569.22 miles (17,009.47 km) SSW | George Airport (GRJ) | George, South Africa | |
| 3 | 10,535.79 miles (16,955.67 km) SSW | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 4 | 10,491.39 miles (16,884.21 km) SSW | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 5 | 10,444.20 miles (16,808.27 km) SSW | East London Airport (ELS) | East London, South Africa | |
| 6 | 10,332.58 miles (16,628.64 km) SSW | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 7 | 10,299.55 miles (16,575.47 km) S | Kleinsee Airport (KLZ) | Kleinzee, South Africa | |
| 8 | 10,266.32 miles (16,521.99 km) S | Aggeneys Airport (AGZ) | Aggeneys, South Africa | |
| 9 | 10,266.31 miles (16,521.99 km) S | Wild Coast Sun Airport (MZF) | Mzamba, South Africa | |
| 10 | 10,262.54 miles (16,515.91 km) SSW | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 11 | 10,233.36 miles (16,468.95 km) SSW | Mafeteng Airport (MFC) | Mafeteng, Lesotho | |
| 12 | 10,225.72 miles (16,456.67 km) SSW | Semonkong Airport (SOK) | Semonkong, Lesotho | |
| 13 | 10,224.06 miles (16,453.98 km) S | Alexander Bay Airport (ALJ) | Alexander Bay, South Africa | |
| 14 | 10,221.48 miles (16,449.83 km) SSW | Lebakeng Airport (LEF) | Lebakeng, Lesotho | |
| 15 | 10,216.30 miles (16,441.50 km) SSW | Lesobeng Airport (LES) | Lesobeng, Lesotho | |