Everything you need to navigate Boston: 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 BOS 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
Boston official terminal map — airport authority website
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 BOS handles — which airlines fly from it, the gate range, and key amenities to know before you go.
Delta Air Lines' dedicated terminal (exclusive tenant), with WestJet operating as a codeshare partner. 21 gates total: 11 in the main building plus 10 in a satellite concourse connected by an underground pedestrian tunnel under the ramp. LEED-certified building with two Delta Sky Club lounges. Terminal A is NOT connected post-security to any other terminal — inter-terminal transfers require exiting security.
Multi-carrier domestic terminal serving Air Canada, Alaska Airlines, American Airlines, Boutique Air, Southwest Airlines, and United Airlines. 41 gates across two concourses (B North and B South), which are linked post-security. Amenities include American Airlines Admirals Club and United Airlines United Club. Post-security walkway connection to Terminal C opened in 2023.
JetBlue's primary hub at BOS (largest tenant), also home to Cape Air's operations base, Aer Lingus domestic-side check-in, and TAP Air Portugal departures. 27 gates. Connected post-security to Terminal E since 2016 and to Terminal B since 2023, making C the link in the B-C-E airside corridor. Features the USO Lounge in baggage claim and the 1951 Our Lady of the Airways Chapel (first airport chapel in the United States).
John A. Volpe International Terminal — Boston's dedicated international terminal with a full Federal Inspection Station (customs and immigration, capacity 2,000+ passengers per hour). 18 gates including 2 hardstand and 2 flexible-use positions; all gates are common-use. Serves virtually all non-US carriers not assigned to other terminals: Air France, British Airways, Lufthansa, Emirates, Icelandair, LOT Polish, Virgin Atlantic, Swiss, KLM, SAS, and others. Connected post-security to Terminal C since 2016.
Terminals B, C, and E are linked airside via post-security indoor walkways (C-E connector since 2016; B-C connector since 2023), forming a continuous corridor. Terminal A (Delta) has no post-security airside connection to other terminals. Inter-terminal transfers involving Terminal A require exiting security and using either: (1) the free Massport On-Airport Shuttle bus (Routes 11/55, every 5-6 minutes, runs curbside lower level) — also connects all 4 terminals; (2) pre-security moving walkways (Terminals A, B, E only); or (3) the MBTA Silver Line SL1 (free between terminals, runs to Airport Station on the Blue Line).
Timing tip
Always allow 15–30 minutes for any inter-terminal transfer at BOS — 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.
Terminal A (Delta) is the only terminal not connected to the B-C-E post-security airside corridor — if your connection involves Delta plus any other airline, plan to exit security and take the free inter-terminal shuttle (5-6 minute frequency), and budget at least 60 minutes minimum connection time.
A few habits that prevent last-minute sprints:
Experienced travellers at BOS use a short checklist every time:
The official Boston terminal map is on the airport authority website at https://maps.massport.com/. Maps are updated when new gates or concourses open; always verify your specific gate on your boarding pass.
Terminals B, C, and E are linked airside via post-security indoor walkways (C-E connector since 2016; B-C connector since 2023), forming a continuous corridor. Terminal A (Delta) has no post-security airside connection to other terminals. Inter-terminal transfers involving Terminal A require exiting security and using either: (1) the free Massport On-Airport Shuttle bus (Routes 11/55, every 5-6 minutes, runs curbside lower level) — also connects all 4 terminals; (2) pre-security moving walkways (Terminals A, B, E only); or (3) the MBTA Silver Line SL1 (free between terminals, runs to Airport Station on the Blue Line).
Terminal A (Delta) is the only terminal not connected to the B-C-E post-security airside corridor — if your connection involves Delta plus any other airline, plan to exit security and take the free inter-terminal shuttle (5-6 minute frequency), and budget at least 60 minutes minimum connection time. 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://maps.massport.com/ before you arrive to familiarise yourself with the layout. Terminal A (Delta) is the only terminal not connected to the B-C-E post-security airside corridor — if your connection involves Delta plus any other airline, plan to exit security and take the free inter-terminal shuttle (5-6 minute frequency), and budget at least 60 minutes minimum connection time.
A: Delta Air Lines' dedicated terminal (exclusive tenant), with WestJet operating as a codeshare partner. 21 gates total: 11 in the main building plus 10 in a satellite concourse connected by an underground pedestrian tunnel under the ramp. LEED-certified building with two Delta Sky Club lounges. Terminal A is NOT connected post-security to any other terminal — inter-terminal transfers require exiting security. B: Multi-carrier domestic terminal serving Air Canada, Alaska Airlines, American Airlines, Boutique Air, Southwest Airlines, and United Airlines. 41 gates across two concourses (B North and B South), which are linked post-security. Amenities include American Airlines Admirals Club and United Airlines United Club. Post-security walkway connection to Terminal C opened in 2023. C: JetBlue's primary hub at BOS (largest tenant), also home to Cape Air's operations base, Aer Lingus domestic-side check-in, and TAP Air Portugal departures. 27 gates. Connected post-security to Terminal E since 2016 and to Terminal B since 2023, making C the link in the B-C-E airside corridor. Features the USO Lounge in baggage claim and the 1951 Our Lady of the Airways Chapel (first airport chapel in the United States). E: John A. Volpe International Terminal — Boston's dedicated international terminal with a full Federal Inspection Station (customs and immigration, capacity 2,000+ passengers per hour). 18 gates including 2 hardstand and 2 flexible-use positions; all gates are common-use. Serves virtually all non-US carriers not assigned to other terminals: Air France, British Airways, Lufthansa, Emirates, Icelandair, LOT Polish, Virgin Atlantic, Swiss, KLM, SAS, and others. Connected post-security to Terminal C since 2016.
Leave-By calculator
The TSA Wait Times Leave-By calculator folds the live BOS 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 BOS TSA wait times · BOS terminals guide · BOS security tips