U.S. Route 270
| US-270 highlighted in red | |
| Route information | |
| Auxiliary route of US 70 | |
| Length | 643 mi (1,035 km) | 
| Existed | 1930–present | 
| Major junctions | |
| West end | US-54 / US-83 in Liberal, KS | 
| 
 | |
| East end | I-530 / US 65 at White Hall, AR | 
| Location | |
| Country | United States | 
| States | Kansas, Oklahoma, Arkansas | 
| Highway system | |
U.S. Route 270 (US 270) is a spur of US 70. It travels for 643 miles (1,035 km) from Liberal, Kansas at US 54 and US 83 to White Hall, Arkansas at Interstate 530 (I-530) and US 65. It travels through the states of Arkansas, Oklahoma, and Kansas. It travels through the cities of Oklahoma City, Oklahoma, Hot Springs, Arkansas, and McAlester, Oklahoma.