Frontier Airlines, Southwest Airlines and United Airlines operate nonstop flights from Boise (BOI) to Denver (DEN). The nonstop flight takes around ~1h 18m, covering 647 miles (1,042 km). Updated 28 June 2026.
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Yes, Frontier Airlines, Southwest Airlines and 1 more airline operate nonstop flights from Boise (BOI) to Denver (DEN).
Frontier Airlines, Southwest Airlines, United Airlines operate nonstop flights from Boise to Denver.
The nonstop flight from Boise to Denver takes ~1h 18m (approximately 1042 km).