Billings (BIL) to Denver (DEN)
Flight time
≈ 1h 43m
Bearing
153° SE
Billings (BIL) to Denver (DEN) is 455 miles (733 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies BIL–DEN
US DOT T-100 · filed dataIn April 2026, SkyWest Airlines operated the most departures, one of 2 carriers flying nonstop BIL–DEN; the Boeing 737-800 was the most common aircraft at 44% of departures; flights ran 84% full.
Departures
256
April 2026
Seats
28,386
both directions
Passengers
23,960
both directions
Load factor
84.4%
passengers ÷ seats
Who flies BIL–DEN?
SkyWest Airlines operated the most nonstop BIL–DEN departures in April 2026 (136), one of 2 carriers on the route.
- OO
SkyWest Airlines
136 departures · 8,388 seats
Share of departures53.1%78.0%
Load
- UA
United Airlines
120 departures · 19,998 seats
Share of departures46.9%87.1%
Load
What plane flies BIL–DEN?
In April 2026, the Boeing 737-800 flew 44% of BIL–DEN departures — more than any other aircraft type.
- Boeing 737-800
113 departures · 87.5% load
44.1% - Bombardier CRJ-550
68 departures · 78.4% load
26.6% - Embraer E175
65 departures · 78.7% load
25.4% - Boeing 737 MAX 9
4 departures · 78.9% load
1.6% - Bombardier CRJ-200
3 departures · 45.3% load
1.2% - Boeing 737-900ER
2 departures · 86.0% load
0.8% - Boeing 737 MAX 8
1 departures · 84.9% load
0.4%
How has BIL–DEN traffic changed?
Nonstop BIL–DEN departures fell from 328 in May 2025 to 256 in April 2026.
Monthly nonstop BIL–DEN traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
328 departures · 27,848 passengers
85.0%
Load
June 2025
356 departures · 29,590 passengers
86.0%
Load
July 2025
353 departures · 30,712 passengers
88.8%
Load
August 2025
359 departures · 30,868 passengers
87.4%
Load
September 2025
337 departures · 26,920 passengers
78.9%
Load
October 2025
314 departures · 27,435 passengers
78.8%
Load
November 2025
285 departures · 24,743 passengers
82.1%
Load
December 2025
252 departures · 24,099 passengers
83.8%
Load
January 2026
247 departures · 22,316 passengers
74.7%
Load
February 2026
220 departures · 20,497 passengers
77.2%
Load
March 2026
245 departures · 23,877 passengers
81.6%
Load
April 2026
256 departures · 23,960 passengers
84.4%
Load
By direction
The DOT files each direction separately — they rarely match.
DEN → BIL
84.3% full
129 departures · 12,011 passengers
BIL → DEN
84.5% full
127 departures · 11,949 passengers
Nonstop BIL–DEN traffic has been filed with the US DOT since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through April 2026; filings from 2025. Public domain (US Government work). The DOT publishes roughly three months in arrears.
The airports
Frequently asked
How far is Billings (BIL) from Denver (DEN)?
BIL to DEN is 455 miles (733 km / 396 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from BIL to DEN?
A nonstop covers the 455-mile great-circle distance in roughly 1h 43m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies BIL–DEN?
In April 2026, the Boeing 737-800 flew the largest share of departures (44.1%), followed by the Bombardier CRJ-550 (26.6%).
What mileage do I earn flying BIL–DEN?
Distance-based programs credit off the 455-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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