Billings (BIL) to Sidney (SDY)
Flight time
≈ 1h 17m
Bearing
56° NE
Billings (BIL) to Sidney (SDY) is 244 miles (392 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies BIL–SDY
US DOT T-100 · filed dataIn April 2026, Cape Air was the only carrier flying nonstop BIL–SDY; the Cessna C-402 was the most common aircraft at 100% of departures; flights ran 44% full.
Departures
298
April 2026
Seats
2,682
both directions
Passengers
1,186
both directions
Load factor
44.2%
passengers ÷ seats
Who flies BIL–SDY?
Cape Air was the only carrier to fly nonstop BIL–SDY in April 2026 (298 departures).
- 9K
Cape Air
298 departures · 2,682 seats
Share of departures100.0%44.2%
Load
What plane flies BIL–SDY?
In April 2026, the Cessna C-402 flew 100% of BIL–SDY departures.
- Cessna C-402
298 departures · 44.2% load
100.0%
How has BIL–SDY traffic changed?
Nonstop BIL–SDY departures fell from 312 in May 2025 to 298 in April 2026.
Monthly nonstop BIL–SDY traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
312 departures · 1,132 passengers
40.3%
Load
June 2025
294 departures · 1,232 passengers
46.6%
Load
July 2025
285 departures · 1,306 passengers
50.9%
Load
August 2025
316 departures · 1,307 passengers
46.0%
Load
September 2025
283 departures · 1,152 passengers
45.2%
Load
October 2025
281 departures · 1,120 passengers
44.3%
Load
November 2025
273 departures · 1,181 passengers
48.1%
Load
December 2025
258 departures · 1,084 passengers
46.7%
Load
January 2026
246 departures · 816 passengers
36.9%
Load
February 2026
280 departures · 980 passengers
38.9%
Load
March 2026
270 departures · 1,035 passengers
42.6%
Load
April 2026
298 departures · 1,186 passengers
44.2%
Load
By direction
The DOT files each direction separately — they rarely match.
SDY → BIL
44.3% full
150 departures · 598 passengers
BIL → SDY
44.1% full
148 departures · 588 passengers
Nonstop BIL–SDY 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
Sidney
US
Sidney - Richland Regional Airport
Coordinates
47.71°N, 104.19°W
Hemisphere
N · W
Frequently asked
How far is Billings (BIL) from Sidney (SDY)?
BIL to SDY is 244 miles (392 km / 212 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from BIL to SDY?
A nonstop covers the 244-mile great-circle distance in roughly 1h 17m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies BIL–SDY?
In April 2026, the Cessna C-402 flew the largest share of departures (100.0%).
What mileage do I earn flying BIL–SDY?
Distance-based programs credit off the 244-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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