Nonstop flight route between Portland, Oregon, United States and Union Island, Saint Vincent and the Grenadines:
Departure Airport:
(45°32'57"N by 122°24'3"W)
Arrival Airport:
(12°35'54"N by 61°24'52"W)
Distance from TTD to UNI:
4,203.95 miles (6,765.58 km)
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Jump to:
- About this route
- TTD Airport Information
- UNI Airport Information
- Facts about TTD
- Facts about UNI
- Map of Nearest Airports to TTD
- List of Nearest Airports to TTD
- Map of Furthest Airports from TTD
- List of Furthest Airports from TTD
- Map of Nearest Airports to UNI
- List of Nearest Airports to UNI
- Map of Furthest Airports from UNI
- List of Furthest Airports from UNI
About this route:
A direct, nonstop flight between Portland-Troutdale Airport (TTD), Portland, Oregon, United States and Union Island Airport (UNI), Union Island, Saint Vincent and the Grenadines would travel a Great Circle distance of 4,204 miles (or 6,766 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 Portland-Troutdale Airport and Union Island 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 Portland-Troutdale Airport and Union Island Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | TTD / KTTD |
| Airport Name: | Portland-Troutdale Airport |
| Location: | Portland, Oregon, United States |
| GPS Coordinates: | 45°32'57"N by 122°24'3"W |
| Area Served: | Portland, Oregon |
| Operator/Owner: | Port of Portland |
| Airport Type: | Public |
| Elevation: | 39 feet (12 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from TTD |
| More Information: | TTD Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | UNI / TVSU |
| Airport Name: | Union Island Airport |
| Location: | Union Island, Saint Vincent and the Grenadines |
| GPS Coordinates: | 12°35'54"N by 61°24'52"W |
| Area Served: | Union Island |
| Airport Type: | Public |
| Elevation: | 14 feet (4 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from UNI |
| More Information: | UNI Maps & Info |
Facts about Portland-Troutdale Airport (TTD):
- The airport was purchased by the Port of Portland in 1942, serving as a reliever airport for nearby Portland International Airport until the 1950s.
- Portland-Troutdale Airport (TTD) currently has only 1 runway.
- The furthest airport from Portland-Troutdale Airport (TTD) is Tôlanaro Airport (FTU), which is located 10,901 miles (17,543 kilometers) away in Tôlanaro, Madagascar.
- The closest airport to Portland-Troutdale Airport (TTD) is Portland International Airport (PDX), which is located only 10 miles (16 kilometers) WNW of TTD.
- Portland-Troutdale Airport is a public use airport located 10 nautical miles east of the central business district of Portland, in Multnomah County, Oregon, United States.
- Because of Portland-Troutdale Airport's relatively low elevation of 39 feet, planes can take off or land at Portland-Troutdale 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.
Facts about Union Island Airport (UNI):
- The closest airport to Union Island Airport (UNI) is Canouan Airport (CIW), which is located only 8 miles (14 kilometers) NE of UNI.
- Union Island Airport (UNI) currently has only 1 runway.
- The furthest airport from Union Island Airport (UNI) is Umbu Mehang Kunda Airport (WGP), which is nearly antipodal to Union Island Airport (meaning Union Island Airport is almost on the exact opposite side of the Earth from Umbu Mehang Kunda Airport), and is located 12,203 miles (19,639 kilometers) away in Waingapu, Sumba, East Nusa Tenggara, Indonesia.
- Because of Union Island Airport's relatively low elevation of 14 feet, planes can take off or land at Union Island 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 9.88 miles (15.90 km) WNW | Portland International Airport (PDX) | Portland, Oregon, United States |     |
| 2 | 26.56 miles (42.74 km) W | Portland-Hillsboro Airport (HIO) | Hillsboro / Portland, Oregon, United States | |
| 3 | 26.73 miles (43.02 km) ENE | Cascade Locks State Airport (CZK) | Cascade Locks, Oregon, United States | |
| 4 | 46.01 miles (74.04 km) NNW | Southwest Washington Regional Airport (KLS) | Kelso, Washington, United States | |
| 5 | 53.03 miles (85.34 km) SSW | McNary Field (SLE) | Salem, Oregon, United States | |
| 6 | 59.86 miles (96.33 km) E | Columbia Gorge Regional Airport (DLS) | The Dalles, Oregon, United States | |
| 7 | 66.99 miles (107.81 km) NNW | South Lewis County Airport (TDO) | Toledo, Washington, United States | |
| 8 | 79.53 miles (127.99 km) WSW | Pacific City State Airport (PFC) | Pacific City, Oregon, United States | |
| 9 | 82.60 miles (132.94 km) WNW | Astoria Regional Airport (AST) | Astoria, Oregon, United States | |
| 10 | 84.66 miles (136.25 km) SSW | Corvallis Municipal Airport (CVO) | Corvallis, Oregon, United States | |
| 11 | 85.92 miles (138.27 km) SE | Madras Municipal AirportMadras Army Airfield (MDJ) | Madras, Oregon, United States | |
| 12 | 100.99 miles (162.53 km) NNW | Olympia Regional Airport (OLM) | Olympia, Washington, United States | |
| 13 | 104.97 miles (168.94 km) SW | Newport Municipal Airport (ONP) | Newport, Oregon, United States | |
| 14 | 106.04 miles (170.66 km) N | Gray Army Airfield (GRF) | Tacoma, Washington, United States | |
| 15 | 106.38 miles (171.20 km) SSW | Eugene Airport (EUG) | Eugene, Oregon, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,901.01 miles (17,543.43 km) SSE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 2 | 10,827.90 miles (17,425.77 km) SSE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 3 | 10,758.30 miles (17,313.76 km) S | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 4 | 10,728.90 miles (17,266.45 km) S | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 10,701.21 miles (17,221.88 km) S | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 6 | 10,674.94 miles (17,179.61 km) SSE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 7 | 10,668.54 miles (17,169.31 km) SSE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 8 | 10,656.44 miles (17,149.84 km) ESE | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 9 | 10,639.73 miles (17,122.95 km) ESE | East London Airport (ELS) | East London, South Africa | |
| 10 | 10,630.20 miles (17,107.61 km) ESE | King Shaka International (DUR) | Durban, KwaZulu-Natal, South Africa | |
| 11 | 10,628.09 miles (17,104.21 km) ESE | Richards Bay Airport (RCB) | Richards Bay, KwaZulu-Natal, South Africa | |
| 12 | 10,626.99 miles (17,102.44 km) SSE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 13 | 10,624.69 miles (17,098.73 km) SSW | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 14 | 10,617.76 miles (17,087.58 km) ESE | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 15 | 10,613.89 miles (17,081.35 km) ESE | Mthatha Airport (UTT) | Mthatha, South Africa | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 8.48 miles (13.65 km) NE | Canouan Airport (CIW) | Canouan Island, Saint Vincent and the Grenadines | |
| 2 | 9.26 miles (14.90 km) SSW | Lauriston Airport (CRU) | Carriacou Island, Grenada | |
| 3 | 25.49 miles (41.02 km) NE | Mustique Airport (MQS) | Mustique Island, Saint Vincent and the Grenadines | |
| 4 | 28.83 miles (46.39 km) NNE | J. F. Mitchell Airport (BQU) | Bequia, Saint Vincent and the Grenadines | |
| 5 | 40.14 miles (64.59 km) NNE | E.T. Joshua Airport (SVD) | Arno Vale (near Kingstown), Saint Vincent, Saint Vincent and the Grenadines | |
| 6 | 48.12 miles (77.44 km) SSW | Maurice Bishop International Airport (GND) | St. George's, Grenada | |
| 7 | 84.34 miles (135.74 km) NNE | Hewanorra International Airport (UVF) | Vieux-Fort, Saint Lucia | |
| 8 | 102.24 miles (164.53 km) NNE | George F. L. Charles Airport (SLU) | Castries, Saint Lucia | |
| 9 | 107.58 miles (173.13 km) SSE | A.N.R. Robinson International Airport (TAB) | Scarborough, Tobago, Trinidad and Tobago | |
| 10 | 133.61 miles (215.02 km) ENE | Grantley Adams International Airport (BGI) | Bridgetown, Barbados | |
| 11 | 138.52 miles (222.92 km) S | Piarco International Airport (POS) | Piarco (near Port of Spain), Trinidad and Tobago | |
| 12 | 140.58 miles (226.24 km) NNE | Aimé Césaire Airport (FDF) | Le Lamentin / Fort de France, Martinique | |
| 13 | 152.52 miles (245.46 km) SSW | Güiria Airport (GUI) | Guiria, Venezuela | |
| 14 | 183.20 miles (294.83 km) SW | General José Francisco Bermúdez Airport (CUP) | Carúpano, Venezuela | |
| 15 | 189.19 miles (304.47 km) N | Canefield Airport (DCF) | Canefield, Dominica | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,203.33 miles (19,639.31 km) SSW | Umbu Mehang Kunda Airport (WGP) | Waingapu, Sumba, East Nusa Tenggara, Indonesia | |
| 2 | 12,167.01 miles (19,580.86 km) WSW | Tardamu Airport (SAU) | Savu Island, East Nusa Tenggara, Indonesia | |
| 3 | 12,156.27 miles (19,563.57 km) S | Sultan Muhammad Salahuddin Airport (BMU) | Bima, Indonesia | |
| 4 | 12,139.21 miles (19,536.12 km) SSW | Komodo Airport (LBJ) | Labuan Bajo, Flores Island, Indonesia | |
| 5 | 12,128.61 miles (19,519.06 km) SSE | Lombok International Airport (LOP) | Mataram (near Praya), Lombok, Indonesia | |
| 6 | 12,119.98 miles (19,505.16 km) SSW | Bajawa Soa Airport (BJW) | Bajawa, Indonesia | |
| 7 | 12,110.52 miles (19,489.95 km) SSE | Selaparang Airport (AMI) | Mataram, Indonesia | |
| 8 | 12,104.11 miles (19,479.63 km) SW | H. Hasan Aroeboesman Airport (ENE) | Ende, Flores, Indonesia | |
| 9 | 12,083.80 miles (19,446.94 km) SE | Ngurah Rai International Airport (NRIA) (DPS) | Denpasar, Bali, Indonesia | |
| 10 | 12,067.69 miles (19,421.01 km) SW | Frans Seda Airport (MOF) | Maumere, Indonesia | |
| 11 | 12,067.68 miles (19,421.00 km) SW | Wonopito Airport (LWE) | Lewoleba, Indonesia | |
| 12 | 12,053.69 miles (19,398.49 km) WSW | El Tari Airport (KOE) | Kupang, East Nusa Tenggara, Indonesia | |
| 13 | 12,023.34 miles (19,349.64 km) SE | Blimbingsari Airport (BWX) | Banyuwangi Regency, East Java, Java Island, Indonesia | |
| 14 | 11,994.55 miles (19,303.30 km) SSW | Broome International Airport (BME) | Broome, Western Australia, Australia | |
| 15 | 11,964.20 miles (19,254.47 km) SW | Derby Airport (DRB) | Derby, Western Australia, Australia | |