twa was headquartered at one time in kansas city, missouri, and planned to make kansas city international airport its main domestic and international hub, but abandoned this plan in the 1970s. the airline later developed its largest hub at lambert-st. louis international airport. its main transatlantic hub was the twa flight center at john f. kennedy international airport in new york city, an architectural icon designed by eero saarinen, and completed in 1962.