Nonstop flight route between Rockland, Maine, United States and Sofia, Bulgaria:
Departure Airport:
(44°3'36"N by 69°5'57"W)
Arrival Airport:
(42°41'42"N by 23°24'29"E)
Distance from RKD to SOF:
4,377.47 miles (7,044.83 km)
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Jump to:
- About this route
- RKD Airport Information
- SOF Airport Information
- Facts about RKD
- Facts about SOF
- Map of Nearest Airports to RKD
- List of Nearest Airports to RKD
- Map of Furthest Airports from RKD
- List of Furthest Airports from RKD
- Map of Nearest Airports to SOF
- List of Nearest Airports to SOF
- Map of Furthest Airports from SOF
- List of Furthest Airports from SOF
About this route:
A direct, nonstop flight between Knox County Regional Airport (RKD), Rockland, Maine, United States and Sofia Airport Vrazhdebna (SOF), Sofia, Bulgaria would travel a Great Circle distance of 4,377 miles (or 7,045 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 Knox County Regional Airport and Sofia Airport Vrazhdebna, 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 Knox County Regional Airport and Sofia Airport Vrazhdebna. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | RKD / KRKD |
| Airport Name: | Knox County Regional Airport |
| Location: | Rockland, Maine, United States |
| GPS Coordinates: | 44°3'36"N by 69°5'57"W |
| Area Served: | Rockland, Maine |
| Operator/Owner: | Knox County |
| Airport Type: | Public |
| Elevation: | 56 feet (17 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from RKD |
| More Information: | RKD Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | SOF / LBSF |
| Airport Names: |
|
| Location: | Sofia, Bulgaria |
| GPS Coordinates: | 42°41'42"N by 23°24'29"E |
| Area Served: | Sofia, Bulgaria |
| Operator/Owner: | Sofia Airport EAD |
| Airport Type: | Public |
| Elevation: | 1742 feet (531 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from SOF |
| More Information: | SOF Maps & Info |
Facts about Knox County Regional Airport (RKD):
- Because of Knox County Regional Airport's relatively low elevation of 56 feet, planes can take off or land at Knox County Regional 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 Knox County Regional Airport (RKD) is Wiscasset Airport (ISS), which is located 31 miles (50 kilometers) WSW of RKD.
- As per Federal Aviation Administration records, the airport had 13,866 passenger boardings in calendar year 2008, 14,461 enplanements in 2009, and 17,657 in 2010.
- The furthest airport from Knox County Regional Airport (RKD) is Albany Airport (ALH), which is located 11,708 miles (18,842 kilometers) away in Albany, Western Australia, Australia.
- Knox County Regional Airport (RKD) has 2 runways.
- Knox County Regional Airport covers an area of 538 acres at an elevation of 56 feet above mean sea level.
Facts about Sofia Airport Vrazhdebna (SOF):
- In addition to being known as "Sofia Airport Vrazhdebna", other names for SOF include "Vrazhdebna Airport" and "Летище София".
- During the Second World War, the facilities were used by the military.
- Terminal 2 was officially opened on 27 December 2006 with the symbolic arrival of Bulgaria Air flight FB 408 from Brussels.
- The new tower is an extremely important facility for both ATC and the airport because it is related to the safety and security of flights, explained by the transport department.
- The closest airport to Sofia Airport Vrazhdebna (SOF) is Plovdiv Airport (PDV), which is located 86 miles (138 kilometers) ESE of SOF.
- Sofia Airport Vrazhdebna (SOF) currently has only 1 runway.
- The furthest airport from Sofia Airport Vrazhdebna (SOF) is Chatham Islands (CHT), which is located 11,437 miles (18,405 kilometers) away in Waitangi, Chatham Islands, New Zealand.
- Sofia Airport Vrazhdebna handled 350,432 passengers last year.
- On 31 August 2006, Sofia Airport put its new runway system into operation, replacing the old and out-of-date facilities.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 31.23 miles (50.26 km) WSW | Wiscasset Airport (ISS) | Wiscasset, Maine, United States |     |
| 2 | 38.99 miles (62.74 km) WNW | Augusta State Airport (AUG) | Augusta, Maine, United States | |
| 3 | 43.32 miles (69.71 km) WSW | Naval Air Station Brunswick (NHZ) | Brunswick, Maine, United States | |
| 4 | 43.38 miles (69.82 km) NW | Waterville Robert Lafleur Airport (WVL) | Waterville, Maine, United States | |
| 5 | 45.35 miles (72.99 km) NE | Hancock County-Bar Harbor Airport (BHB) | Bar Harbor, Maine, United States | |
| 6 | 53.33 miles (85.83 km) NNE | Bangor International Airport (BGR) | Bangor, Maine, United States | |
| 7 | 58.82 miles (94.66 km) W | Auburn/Lewiston Municipal Airport (LEW) | Auburn/Lewiston, Maine, United States | |
| 8 | 59.05 miles (95.03 km) NW | Central Maine Airport of Norridgewock (OWK) | Norridgewock, Maine, United States | |
| 9 | 65.12 miles (104.80 km) NNE | Old Town Municipal Airport (OLD) | Old Town, Maine, United States | |
| 10 | 66.73 miles (107.38 km) WSW | Portland International Jetport (PWM) | Portland, Maine, United States | |
| 11 | 91.96 miles (148.00 km) W | Eastern Slopes Regional Airport (FRY) | Fryeburg, Maine, United States | |
| 12 | 92.58 miles (148.99 km) WSW | Sanford Seacoast Regional Airport (SFM) | Sanford, Maine, United States | |
| 13 | 108.65 miles (174.86 km) WNW | Berlin Regional Airport (BML) | Berlin, New Hampshire, United States | |
| 14 | 109.11 miles (175.59 km) NE | Princeton Municipal Airport (PNN) | Princeton, Maine, United States | |
| 15 | 109.78 miles (176.68 km) SW | Portsmouth International Airport at Pease (PSM) | Portsmouth, New Hampshire, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,707.78 miles (18,841.79 km) SSW | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 2 | 11,704.56 miles (18,836.61 km) SSW | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 3 | 11,701.73 miles (18,832.06 km) SSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 4 | 11,680.66 miles (18,798.16 km) SSW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 5 | 11,655.50 miles (18,757.66 km) SSW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 6 | 11,634.75 miles (18,724.26 km) SSW | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 7 | 11,567.46 miles (18,615.98 km) SSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 8 | 11,566.96 miles (18,615.17 km) SSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 9 | 11,555.62 miles (18,596.91 km) SSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 10 | 11,511.65 miles (18,526.16 km) SW | Esperance Airport (EPR) | Esperance, Australia | |
| 11 | 11,459.54 miles (18,442.29 km) SSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 12 | 11,374.24 miles (18,305.01 km) SW | Kambalda Airport (KDB) | Kambalda, Western Australia, Australia | |
| 13 | 11,372.20 miles (18,301.73 km) SSW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 14 | 11,361.85 miles (18,285.08 km) SSW | Windarling Airport (WRN) | Windarling, Australia | |
| 15 | 11,361.47 miles (18,284.47 km) SSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 86.04 miles (138.47 km) ESE | Plovdiv Airport (PDV) | Plovdiv, Bulgaria | |
| 2 | 90.21 miles (145.17 km) WNW | Niš Constantine the Great International Airport (INI) | Niš, Serbia | |
| 3 | 104.17 miles (167.64 km) WSW | Skopje Airport (SKP) | Skopje, Macedonia | |
| 4 | 114.70 miles (184.58 km) NNE | Craiova International Airport (CRA) | Craiova, Romania | |
| 5 | 116.49 miles (187.47 km) E | Stara Zagora Airport (SZR) | Stara Zagora, Bulgaria | |
| 6 | 120.78 miles (194.38 km) ENE | Gorna Oryahovitsa Airport (GOZ) | Gorna Oryahovitsa, Bulgaria | |
| 7 | 120.89 miles (194.55 km) W | Pristina International Airport "Adem Jashari" (PRN) | Pristina, Kosovo | |
| 8 | 121.98 miles (196.31 km) ESE | Haskovo Malevo Airport (HKV) | Haskovo, Bulgaria | |
| 9 | 137.99 miles (222.08 km) SSE | Kavala International Airport "Alexander The Great" (KVA) | Kavala, Greece | |
| 10 | 150.23 miles (241.78 km) ENE | Ruse Airport (ROU) | Rousse, Bulgaria | |
| 11 | 150.69 miles (242.52 km) E | Bezmer Air Base (JAM) | Yambol (Jambol), Bulgaria | |
| 12 | 151.99 miles (244.60 km) S | Thessaloniki International Airport "Makedonia" (SKG) | Thessaloniki, Greece | |
| 13 | 172.42 miles (277.48 km) SW | Ohrid Airport (OHD) | Ohrid, Republic of Macedonia | |
| 14 | 180.14 miles (289.91 km) W | Dolac Airport (IVG) | Berane, Montenegro | |
| 15 | 182.69 miles (294.02 km) SE | Alexandroupolis International Airport (AXD) | Alexandroupolis, Greece | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,436.55 miles (18,405.29 km) E | Chatham Islands (CHT) | Waitangi, Chatham Islands, New Zealand | |
| 2 | 11,080.97 miles (17,833.04 km) E | Gisborne Airport (GIS) | Gisborne, New Zealand | |
| 3 | 11,042.80 miles (17,771.62 km) E | Hawke's Bay Airport (NPE) | Napier, New Zealand | |
| 4 | 11,008.76 miles (17,716.84 km) E | Whakatane Airport (WHK) | Whakatane, New Zealand | |
| 5 | 11,008.49 miles (17,716.41 km) E | Hood Aerodrome (MRO) | Masterton, New Zealand | |
| 6 | 11,004.83 miles (17,710.51 km) SSW | Rurutu Airport (RUR) | Rurutu, French Polynesia | |
| 7 | 10,997.71 miles (17,699.06 km) S | Mangaia Island Airport (MGS) | Mangaia Island, Cook Islands | |
| 8 | 10,996.07 miles (17,696.41 km) E | Palmerston North Airport (PMR) | Palmerston North, New Zealand | |
| 9 | 10,986.67 miles (17,681.28 km) E | Taupo AirportTe Papa Waka Rererangi o Taupō (TUO) | Taupo, New Zealand | |
| 10 | 10,983.29 miles (17,675.84 km) E | Rotorua International Airport (ROT) | Rotorua, New Zealand | |
| 11 | 10,974.71 miles (17,662.04 km) E | Kapiti Coast Airport (PPQ) | Paraparaumu Beach, New Zealand | |
| 12 | 10,972.38 miles (17,658.28 km) E | Wellington International Airport (WLG) | Wellington, New Zealand | |
| 13 | 10,966.07 miles (17,648.14 km) E | Tauranga Airport (TRG) | Tauranga, New Zealand | |
| 14 | 10,959.16 miles (17,637.01 km) E | Wanganui Airport (WAG) | Wanganui, New Zealand | |
| 15 | 10,944.51 miles (17,613.43 km) E | Matamata Airport (MTA) | Matamata, New Zealand | |