Boise (BOI) to Salt Lake City (SLC)

290mi
466 km252 nm

Flight time

≈ 1h 23m

Bearing

130° SE

Boise (BOI) to Salt Lake City (SLC) is 290 miles (466 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.

Route map: BOI → SLCBOISLC

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What actually flies BOI–SLC

Filed traffic data

In July 2026, Delta Air Lines operated the most departures, one of 9 carriers flying nonstop BOI–SLC; the Airbus A220-100 was the most common aircraft at 38% of departures; flights ran 80% full.

Departures

316

July 2026

Seats

37,515

both directions

Passengers

30,000

both directions

Load factor

80.0%

RPM ÷ ASM

Who flies BOI–SLC?

Delta Air Lines operated the most nonstop BOI–SLC departures in July 2026 (238), one of 9 carriers on the route.

  • DL

    Delta Air Lines

    238 departures · 31,463 seats

    79.7%

    Load

  • OO

    SkyWest Airlines

    69 departures · 4,920 seats

    84.3%

    Load

  • WN

    Southwest Airlines

    3 departures · 487 seats

    85.6%

    Load

  • AA

    American Airlines

    1 departures · 190 seats

    86.3%

    Load

  • 13Q

    Chartright Air

    1 departures · 10 seats

    90.0%

    Load

  • UA

    United Airlines

    1 departures · 126 seats

    54.0%

    Load

  • AS

    Alaska Airlines

    1 departures · 161 seats

    77.0%

    Load

  • 37Q

    Eastern Air Express

    1 departures · 144 seats

    0.7%

    Load

  • 3EQ

    Silver Air

    1 departures · 14 seats

    35.7%

    Load

What plane flies BOI–SLC?

In July 2026, the Airbus A220-100 flew 38% of BOI–SLC departures — more than any other aircraft type.

How has BOI–SLC traffic changed?

Nonstop BOI–SLC departures rose from 312 in August 2025 to 316 in July 2026.

Monthly nonstop BOI–SLC traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.

  • August 2025

    312 departures · 31,118 passengers

    81.0%

    Load

  • September 2025

    308 departures · 29,829 passengers

    82.7%

    Load

  • October 2025

    313 departures · 29,491 passengers

    86.0%

    Load

  • November 2025

    300 departures · 26,260 passengers

    80.5%

    Load

  • December 2025

    303 departures · 27,573 passengers

    82.4%

    Load

  • January 2026

    254 departures · 22,104 passengers

    77.2%

    Load

  • February 2026

    229 departures · 20,169 passengers

    77.6%

    Load

  • March 2026

    301 departures · 27,157 passengers

    80.3%

    Load

  • April 2026

    309 departures · 26,989 passengers

    76.8%

    Load

  • May 2026

    315 departures · 29,140 passengers

    84.1%

    Load

  • June 2026

    289 departures · 28,037 passengers

    83.3%

    Load

  • July 2026

    316 departures · 30,000 passengers

    80.0%

    Load

By direction

Each direction is filed separately — they rarely match.

BOI → SLC

83.0% full

161 departures · 15,712 passengers

SLC → BOI

76.9% full

155 departures · 14,288 passengers

Nonstop BOI–SLC traffic has been filed since 2025.

Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through July 2026; filings from 2025. Public domain (US Government work).

The airports

BOI

Boise

US

Boise Air Terminal/Gowen Field

Coordinates

43.56°N, 116.22°W

Hemisphere

N · W

SLC

Salt Lake City

US

Salt Lake City International Airport

Coordinates

40.79°N, 111.98°W

Hemisphere

N · W

Frequently asked

How far is Boise (BOI) from Salt Lake City (SLC)?

BOI to SLC is 290 miles (466 km / 252 nautical miles) measured great-circle — the shortest path over the surface of the Earth.

How long is the flight from BOI to SLC?

A nonstop covers the 290-mile great-circle distance in roughly 1h 23m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.

What plane flies BOI–SLC?

In July 2026, the Airbus A220-100 flew the largest share of departures (38.3%), followed by the Airbus A320 (34.8%).

What mileage do I earn flying BOI–SLC?

Distance-based programs credit off the 290-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.

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