Cheap flights from Baltimore-Washington to Denver International from $169
Updated 2026-07-25
1488 miles great-circle distance, typically flown in 3h 24m with 6 airlines operating direct service from Baltimore-Washington (BWI) to Denver International (DEN). Fares on this corridor stay relatively stable across the year — booking 4–8 weeks ahead and choosing a midweek departure typically secures the best price.
Flying from Baltimore-Washington
Baltimore-Washington Thurgood Marshall is Southwest Airlines' largest East Coast hub and one of the cheapest US airports for domestic travel. The MARC Penn Line and Amtrak both serve BWI Rail Station — a 12-minute light rail shuttle ride from the terminal — with onward service to Washington Union Station in 30 minutes ($8 MARC, $20+ Amtrak). Limited international long-haul (BA to London, Condor to Frankfurt seasonally); the focus is heavy short-haul Southwest and ULCC capacity.
Arriving in Denver
Denver International is 25 miles northeast of downtown Denver — the most remote big-city airport in the US, deliberately sited to allow for unlimited expansion. The University of Colorado A Line commuter train runs from a dedicated station every 15 minutes to Union Station in 37 minutes for $10.50. Snow can disrupt operations from November through April; Denver fares are cheapest in shoulder seasons (April–May, September–October).
Who flies BWI to DEN?
| Airline | IATA | Flight time | Cabin |
| Southwest Airlines | WN | 3h 24m | Economy |
| Spirit Airlines | NK | 3h 24m | Economy |
| Frontier Airlines | F9 | 3h 24m | Economy |
| American Airlines | AA | 3h 24m | Economy |
| Delta Air Lines | DL | 3h 24m | Economy |
| United Airlines | UA | 3h 24m | Economy |
6 carriers fly direct on this corridor. Frequencies vary by season — summer and winter holiday peaks see additional flights.
Baltimore to Denver FAQs
Direct flights from Baltimore-Washington (BWI) to Denver International (DEN) take approximately 3h 24m for the 1488-mile journey, plus 30–60 minutes of taxi, climb and descent. Total airport-to-airport time depends on cruise winds and air-traffic queueing on approach.
6 carriers operate direct service from Baltimore-Washington (BWI) to Denver International (DEN): Southwest Airlines, Spirit Airlines, Frontier Airlines, American Airlines, Delta Air Lines and 1 more. Frequencies vary by season and carrier — Southwest Airlines typically operates the highest weekly count on this corridor.
No — United States is domestic travel for US citizens. A US passport is not required for the 50 states, DC or US territories (Puerto Rico, US Virgin Islands, Guam, American Samoa, Northern Mariana Islands), though Real ID-compliant ID is required at TSA from May 2025.
Denver International (DEN) is the primary international airport for Denver. Allow 30–60 minutes for the ground transfer by train, express bus, taxi or rideshare depending on traffic and time of day. See the airport's official website for current train and shuttle timetables.