In November 1953 American Airlines began the 1st regular non-stop commercial NY-LA air service with the Douglas DC7
.
- 1932 First scheduled cross-country passenger flights with no change of plane
- 1933 Transcontinental passenger flights in as little as 20 hours on the Boeing 247
- 1934 First three-stop airline flights (TWA DC-2)
- 1946 First one-stop airline flights (United DC-4 and TWA Constellation)
- 1953 First sustained nonstop airline flights (TWA may have flown some LA-NY nonstops in 1947)