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
Filed traffic dataIn June 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 53% full.
Departures
278
June 2026
Seats
2,502
both directions
Passengers
1,338
both directions
Load factor
53.5%
RPM ÷ ASM
Who flies BIL–SDY?
Cape Air was the only carrier to fly nonstop BIL–SDY in June 2026 (278 departures).
- 9K
Cape Air
278 departures · 2,502 seats
Share of departures100.0%53.5%
Load
What plane flies BIL–SDY?
In June 2026, the Cessna C-402 flew 100% of BIL–SDY departures.
- Cessna C-402
278 departures · 53.5% load
100.0%
How has BIL–SDY traffic changed?
Nonstop BIL–SDY departures fell from 285 in July 2025 to 278 in June 2026.
Monthly nonstop BIL–SDY traffic, trailing 12 months through June 2026. Bars scale to the busiest month; months with no filed service show as zero.
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
May 2026
286 departures · 1,254 passengers
48.7%
Load
June 2026
278 departures · 1,338 passengers
53.5%
Load
By direction
Each direction is filed separately — they rarely match.
BIL → SDY
52.8% full
141 departures · 670 passengers
SDY → BIL
54.2% full
137 departures · 668 passengers
Nonstop BIL–SDY traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through June 2026; filings from 2025. Public domain (US Government work).
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 June 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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