The crossword solutions for the term KEEP CLIMBING AIRLINE are DELTA, which is a major American airline. DELTA Air Lines, Inc. is headquartered in Atlanta, Georgia and is one of the world's largest airlines. It operates over 5, 400 flights daily and serves an extensive domestic and international network that includes 319 destinations in 54 countries on six continents. DELTA is a founding member of the SkyTeam airline alliance, which provides customers with extensive worldwide destinations, flights, and services.