Everything you need to navigate Billings: the official terminal map link, what airlines fly from each concourse, how to move between terminals, and gate-finding tips that save you backtracking. Verify your specific gate on your boarding pass — assignments change.

The BIL airport authority publishes the most up-to-date map on its official website. Use the link below before you travel so you know the terminal layout and gate locations before you clear security.
Official map
Billings official terminal map — airport authority website
Billings interactive map — searchable by gate, airline, or amenity
Maps are updated when terminals are renovated or new concourses open. Terminal 5 at LAX, for example, has been closed since October 2025 for reconstruction — always confirm your terminal from your boarding pass rather than relying on a saved map.
Here is what each terminal or concourse at BIL handles — which airlines fly from it, the gate range, and key amenities to know before you go.
A 220,000-sq-ft terminal building completed after a $45 million, multi-year modernization (2019–2024) that replaced the airport's original 1990s-era facility. The main level (landside) holds airline ticket counters, the Gateway Taproom & Grill sit-down restaurant, Skyblu Gifts, the USPS dropbox, ATMs, the TSA security checkpoint, and baggage claim with two carousels on the west side. Elevators and escalators connect this level up to the Concourse (airside) level.
Past security, passengers reach an open 'Great Room' with floor-to-ceiling windows facing the runways, a fireplace, Mountain Mudd Coffee, and the Skyward Brews bar. The concourse splits into Concourse A and Concourse B, together totaling 9 gates and 8 jet bridges (up from 6 gates/4 jet bridges pre-renovation). Alaska/Horizon, Allegiant, American/Envoy, Delta/SkyWest, and United/SkyWest all operate out of these two concourses; a food court (Logan's Diner, Stacked a Montana Grill, Cinnabon) sits adjacent to the checkpoint.
Both concourses are reached airside from the central Great Room via covered walkways — roughly a 5-minute walk to Concourse A and 10 minutes to Concourse B from the main checkpoint. BIL is a single small terminal, so there is no interterminal train or landside shuttle required between concourses; everything is walkable.
Timing tip
Always allow 15–30 minutes for any inter-terminal transfer at BIL — wait times for people-movers, buses, or security re-screening add up faster than the physical distance suggests. Build the buffer into your Leave-By time, not your gate arrival time.
BIL is compact — checkpoint to any gate is a 5–10 minute walk at most — so the standard advice is to arrive at least 90 minutes before a domestic flight (2 hours during holiday peaks) rather than the 2–3 hours needed at large hub airports. Confirm which concourse (A or B) your airline uses at check-in since directional signage from the Great Room splits early.
A few habits that prevent last-minute sprints:
Experienced travellers at BIL use a short checklist every time:
The official Billings terminal map is on the airport authority website at https://www.flybillings.com/1850/Airport-Map — an interactive version is also at https://www.ifly.com/airports/billings-logan-international-airport/terminal-map. Maps are updated when new gates or concourses open; always verify your specific gate on your boarding pass.
Both concourses are reached airside from the central Great Room via covered walkways — roughly a 5-minute walk to Concourse A and 10 minutes to Concourse B from the main checkpoint. BIL is a single small terminal, so there is no interterminal train or landside shuttle required between concourses; everything is walkable.
BIL is compact — checkpoint to any gate is a 5–10 minute walk at most — so the standard advice is to arrive at least 90 minutes before a domestic flight (2 hours during holiday peaks) rather than the 2–3 hours needed at large hub airports. Confirm which concourse (A or B) your airline uses at check-in since directional signage from the Great Room splits early. Your boarding pass shows the exact gate. Open your airline app about two hours before departure — gate assignments sometimes change after check-in closes. Look for departure boards throughout the terminal for real-time gate information.
Use the official interactive map at https://www.ifly.com/airports/billings-logan-international-airport/terminal-map before you arrive to familiarise yourself with the layout. BIL is compact — checkpoint to any gate is a 5–10 minute walk at most — so the standard advice is to arrive at least 90 minutes before a domestic flight (2 hours during holiday peaks) rather than the 2–3 hours needed at large hub airports. Confirm which concourse (A or B) your airline uses at check-in since directional signage from the Great Room splits early.
Main Terminal: A 220,000-sq-ft terminal building completed after a $45 million, multi-year modernization (2019–2024) that replaced the airport's original 1990s-era facility. The main level (landside) holds airline ticket counters, the Gateway Taproom & Grill sit-down restaurant, Skyblu Gifts, the USPS dropbox, ATMs, the TSA security checkpoint, and baggage claim with two carousels on the west side. Elevators and escalators connect this level up to the Concourse (airside) level. Concourse Level (Concourse A and Concourse B): Past security, passengers reach an open 'Great Room' with floor-to-ceiling windows facing the runways, a fireplace, Mountain Mudd Coffee, and the Skyward Brews bar. The concourse splits into Concourse A and Concourse B, together totaling 9 gates and 8 jet bridges (up from 6 gates/4 jet bridges pre-renovation). Alaska/Horizon, Allegiant, American/Envoy, Delta/SkyWest, and United/SkyWest all operate out of these two concourses; a food court (Logan's Diner, Stacked a Montana Grill, Cinnabon) sits adjacent to the checkpoint.
Leave-By calculator
The TSA Wait Times Leave-By calculator folds the live BIL security wait, your drive time, and terminal navigation into one exact time to leave home — so you reach your gate without guessing.
See also: Live BIL TSA wait times · BIL terminals guide · BIL security tips