The Economy Lot at $10/day, with shuttles running approximately every 15 minutes, 24 hours a day. It functions as overflow parking when the closer-in lots reach capacity, and at $10/day it's the most cost-efficient option on airport property. The shuttle ride from Economy is roughly 5-7 minutes including boarding wait — short enough that the shuttle isn't the friction it can be at larger airports.
| Lot | Daily rate | Hourly | Best for |
|---|---|---|---|
| Economy Lot (shuttle) | $10/day | $2/hour | Cheapest; trips of any length |
| Long-Term Surface | $17/day | $2/hour | Skip the shuttle, mid-tier |
| Long-Term East Garage | $20/day | $2/hour | Covered, secondary garage |
| Long-Term Main Garage | $23/day | $2/hour | Covered, closest to terminal |
| Short-Term | $30/day | $2/hour | Picking up arrivals only |
| Curbside Valet | $28/day | — | 4 AM-1 AM, no walk; reserve ahead |
| Cell Phone Waiting Lot | Free | — | Waiting for arriving passengers |
Rates published by Boise Airport Authority and operated by The Car Park, retrieved 2026-04-30 from iflyboise.com/parking-transportation/parking-rates/.
Use booking.parking.iflyboise.thecarpark.com — the airport's official reservation portal operated by The Car Park (BOI's parking concessionaire). You enter arrival and return dates, pick a lot tier (Economy / Long-Term Surface / East Garage / Main Garage / Short-Term / Curbside Valet), and pre-pay. Reserved spots guarantee availability — particularly valuable during winter ski-season weekends, summer peaks, and major Idaho events when the closer-in lots can fill. We don't currently sell BOI inventory on parkingaccess.com, so the honest play is to send you straight to The Car Park's portal with your dates.
The math is closer than you'd expect. Curbside Valet is $28/day vs. Long-Term Main Garage at $23/day — only a $5/day premium for someone walking up to the curb, taking your keys, and parking the car for you. For business travelers with luggage, mobility considerations, or anyone leaving from BOI in Idaho winter weather (snow, ice on cars after a week-long trip), the $5/day is genuinely worth it. The catch: Valet is only available 4 AM to 1 AM. If your flight arrives between 1 AM and 4 AM, you'll need a different option. Reservations are encouraged for valet — drop-off without reservation can mean waiting if the curbside team is at capacity.
| Origin | Distance | Drive |
|---|---|---|
| Downtown Boise | ~5 mi | 10-15 min |
| Boise State University | ~5 mi | 10-15 min |
| Garden City | ~7 mi | 12-18 min |
| Meridian | ~12 mi | 15-25 min |
| Eagle | ~15 mi | 18-28 min |
| Kuna | ~20 mi | 22-32 min |
| Nampa | ~22 mi | 25-35 min |
| Caldwell | ~30 mi | 32-42 min |
| Mountain Home (incl. AFB) | ~50 mi | 55-65 min |
| Twin Falls | ~130 mi | 2 hr |
| McCall | ~100 mi | 2 hr |
| Sun Valley / Ketchum | ~150 mi | 2.5 hr |
| Bogus Basin (ski) | ~22 mi | 35-45 min |
Boise International serves as the gateway airport for several Idaho recreation destinations that don't have their own commercial service. From a parking standpoint:
For Treasure Valley residents, BOI almost always wins on parking — Economy at $10/day undercuts SLC's Long-Term Economy ($12/day), and the 5-hour drive to SLC eats most of the cost difference even before fuel. The case for SLC comes down to flight network: SLC is Delta's western hub with broader nonstop service, especially internationally. For domestic point-to-point trips, BOI is the right answer. For international or transcontinental connections, SLC's wider network can offset the drive — but only by a thin margin once you factor parking + drive time + meals + the risk of weather closing the I-84 / I-15 corridor in winter.
For 5:30-7:30 AM departures, plan to be at your parking spot 65 minutes before boarding if you're in the Long-Term Main Garage (closest, no shuttle), 75 minutes from Long-Term Surface or East Garage, and 85 minutes from Economy with the shuttle. BOI's TSA wait is consistently among the fastest in the US — typically under 10 minutes outside of holiday peaks. The single central security checkpoint serves both Concourse B (Southwest, Allegiant, JetBlue, Frontier) and Concourse C (Alaska, American, Delta, United).
BOI is unusual in the US system because it serves as the only meaningful commercial airport for a state-sized region — the next major airport is roughly 5 hours away by car (SLC east, SEA northwest, GEG north). Practical implications for parking:
Three peak windows produce real capacity pressure on closer-in BOI lots: winter ski season (December-March, especially Friday-Sunday around Bogus Basin / Sun Valley / Tamarack peak weekends), summer travel (June-August Friday afternoons), and the week before Thanksgiving and Christmas. During these windows, Long-Term Main Garage and East Garage typically reach capacity by Friday afternoon, with overflow pushing to Long-Term Surface and then Economy. Reservations through the booking.parking.iflyboise.thecarpark.com portal guarantee a spot — strongly recommended for any peak-window departure.
Boise International operates a single terminal with two concourses meeting at a central security checkpoint and ticketing area. Concourse B serves Southwest (the largest carrier at BOI), Allegiant, JetBlue, and Frontier; Concourse C serves Alaska, American, Delta, and United. Both concourses radiate from the central pavilion, with terminal-edge-to-farthest-gate walks under 8 minutes. From any of the parking tiers — Economy, Long-Term Surface, East Garage, Main Garage, Short-Term, or Curbside Valet — travelers funnel through the same central security checkpoint, then split toward B or C. The compact design means no parking tier creates a meaningful walking-distance penalty.
Yes — the Cell Phone Waiting Lot is free indefinitely while you wait for an arriving passenger. There's no published free long-term parking option at BOI. The Curbside drop-off zone is free for short stops (typically under 5 minutes for active loading/unloading).
Yes — booking.parking.iflyboise.thecarpark.com is the airport's official reservation portal, operated by The Car Park. You can reserve any tier including Curbside Valet. Reservations are strongly recommended during winter ski-season weekends and summer holiday peaks when closer-in lots can reach capacity.
Approximately 5-7 minutes from boarding to terminal drop-off, with shuttles running every 15 minutes around the clock. The Economy Lot is the airport's overflow parking and the shuttle service runs continuously matching flight operations.
The Long-Term East Garage at $20/day is the cheapest covered option at BOI, undercutting the Long-Term Main Garage ($23/day) by $3/day. East Garage is slightly farther from the terminal but still walkable; Main Garage is closer but more expensive. For drivers who specifically want covered parking with the closest possible terminal access, Main Garage at $23/day is the answer.
Yes — Curbside Valet is operated by The Car Park at $28/day, available 4 AM to 1 AM (extended later if necessary to accommodate incoming flights). Reservations are encouraged. The valet team handles vehicle pickup and return curbside, eliminating the parking-and-walk routine entirely.
There's no published maximum stay limit on Economy, Long-Term Surface, or either garage tier. Two weeks at Economy runs $140 ($10 × 14). For 3+ week stays — common for Idaho seasonal travelers and Mountain Home AFB deployments — call The Car Park directly to confirm long-stay accommodation.
December-March Friday afternoons are BOI's busiest parking window, driven by skiers leaving for out-of-state ski destinations and Bogus Basin / Sun Valley return-trip travelers. Long-Term Main Garage and East Garage typically reach capacity Friday afternoon. Pre-book through booking.parking.iflyboise.thecarpark.com to guarantee a spot.
Valley Regional Transit (VRT) operates limited bus service to BOI from downtown Boise, but headways are infrequent — for most travelers it's not a practical option. Uber and Lyft are price-competitive from anywhere inside the Treasure Valley on trips of 1-2 days. Friend or family drop-off remains the cheapest non-parking option for residents within 30 minutes.
Yes — Long-Term Surface ($17/day) is uncovered surface parking with a short walk to the terminal, Long-Term Main Garage ($23/day) is the closest covered structure with the shortest walk to the terminal entrance. The $6/day premium for the Main Garage buys covered parking and a shorter walk; for a 7-day trip that's $42 more total. For Idaho winter weather (snow, ice accumulation on the windshield over a week-long absence), the Main Garage premium is often worth it.
Rates and operational details verified as of 2026-04-30 from publicly published sources (iflyboise.com/parking-transportation/parking-rates/, booking.parking.iflyboise.thecarpark.com). All BOI parking is operated by The Car Park as the airport's concessionaire. Always confirm current rates at the booking portal before traveling.
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