Nonstop flight route between Washington, D.C. / Virginia, United States and Hat Yai, Songkhla Province, Thailand:
Departure Airport:

Arrival Airport:

Distance from IAD to HDY:
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- About this route
- IAD Airport Information
- HDY Airport Information
- Facts about IAD
- Facts about HDY
- Map of Nearest Airports to IAD
- List of Nearest Airports to IAD
- Map of Furthest Airports from IAD
- List of Furthest Airports from IAD
- Map of Nearest Airports to HDY
- List of Nearest Airports to HDY
- Map of Furthest Airports from HDY
- List of Furthest Airports from HDY
About this route:
A direct, nonstop flight between Washington Dulles International Airport (IAD), Washington, D.C. / Virginia, United States and Hat Yai International Airport (HDY), Hat Yai, Songkhla Province, Thailand would travel a Great Circle distance of 9,264 miles (or 14,909 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 Washington Dulles International Airport and Hat Yai International 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 Washington Dulles International Airport and Hat Yai International Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | IAD / KIAD |
Airport Name: | Washington Dulles International Airport |
Location: | Washington, D.C. / Virginia, United States |
GPS Coordinates: | 38°56'39"N by 77°27'20"W |
Area Served: | Washington metropolitan area |
Airport Type: | Public |
Elevation: | 313 feet (95 meters) |
# of Runways: | 5 |
View all routes: | Routes from IAD |
More Information: | IAD Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | HDY / VTSS |
Airport Names: |
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Location: | Hat Yai, Songkhla Province, Thailand |
GPS Coordinates: | 6°55'59"N by 100°23'34"E |
Operator/Owner: | Airports of Thailand |
Airport Type: | Public |
Elevation: | 90 feet (27 meters) |
# of Runways: | 1 |
View all routes: | Routes from HDY |
More Information: | HDY Maps & Info |
Facts about Washington Dulles International Airport (IAD):
- Because of Washington Dulles International Airport's relatively low elevation of 313 feet, planes can take off or land at Washington Dulles International 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 design included a landscaped man-made lake to collect rainwater, a low-rise hotel, and a row of office buildings along the north side of the main parking lot.
- Conceived in early planning sessions in 1959, Dulles is one of the few remaining airports to use the mobile lounge for boarding and disembarkation from aircraft, and to transfer passengers between the midfield concourses and to and from the main terminal building.
- The main terminal was extended in 1996 to 1,240 feet —Saarinen's original design length—which was slightly more than double its originally constructed length of 600 feet.
- Washington Dulles International Airport (IAD) has 5 runways.
- The furthest airport from Washington Dulles International Airport (IAD) is Margaret River Airport (MGV), which is located 11,659 miles (18,763 kilometers) away in Margaret River, Western Australia, Australia.
- Washington Dulles Airport is the busiest airport in the Washington metropolitan area, and second busiest airport in the larger Baltimore–Washington metropolitan area with over 22 million passengers a year.
- A new and permanent C/D concourse is planned as part of the D2 Dulles Development Project.
- By the 1980s, the original design, which had mobile lounges meet each plane, was no longer well-suited to Dulles' role as a hub airport.
- The closest airport to Washington Dulles International Airport (IAD) is Leesburg Executive Airport (JYO), which is located only 11 miles (17 kilometers) NNW of IAD.
Facts about Hat Yai International Airport (HDY):
- In addition to being known as "Hat Yai International Airport", another name for HDY is "ท่าอากาศยานหาดใหญ่".
- Hat Yai International Airport handled 2,465,370 passengers last year.
- The furthest airport from Hat Yai International Airport (HDY) is Cap. FAP José A. Quiñones González International Airport (CIX), which is nearly antipodal to Hat Yai International Airport (meaning Hat Yai International Airport is almost on the exact opposite side of the Earth from Cap. FAP José A. Quiñones González International Airport), and is located 12,419 miles (19,986 kilometers) away in Chiclayo, Peru.
- During the 2005 Songkhla bombings, a bomb planted at the departure lounge by Pattani separatists exploded on April 3, 2005, killing one passenger and injuring 10.
- Hat Yai International Airport (HDY) currently has only 1 runway.
- The closest airport to Hat Yai International Airport (HDY) is Sultan Abdul Halim Airport (AOR), which is located 51 miles (82 kilometers) S of HDY.
- Because of Hat Yai International Airport's relatively low elevation of 90 feet, planes can take off or land at Hat Yai International 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.