Boston Logan Airport Terminals: A Four‑Terminal Playbook for Check‑In, Security, and Getting into Boston

You land at Boston Logan with a stroller, two carry‑ons, and that “we have exactly 65 minutes” connection buffer, then realize JetBlue is in Terminal C, your onward American flight is out of B, and there is no magic hallway between them. That is the Boston tax for picking the wrong terminal.

Boston Logan International Airport (BOS) looks compact on a map. In reality, it is four separate terminals, only three of them walk‑linked pre‑security, with a healthy number of lounges, several different ground transport types into the city, and one international building that can involve a long walk before you even see TSA. The airport rewards people who think terminal first, everything else second.

On a recent LAX–Boston–Asia connection in my family, the difference between a calm cup of coffee and a sprint with roller bags came down to one detail: knowing which Boston terminal their airline actually used.

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The Boston Logan terminal playbook in 30 seconds

If you are skimming this in a Lyft, start here.

Step 1: Check the “operated by” line on your ticket. Then:

• If it says Delta → go to Terminal A
• If it says American or Southwest → go to Terminal B
• If it says JetBlue → your flight may use B or C, so read the terminal printed on the boarding pass
• If it says British Airways, Lufthansa, or another foreign carrier → assume Terminal E unless your confirmation says otherwise

Step 2: Clear TSA in that same terminal.

• If you are at the wrong building and your flight is from Terminal C → take the Massport shuttle (no walkway to C)
• If you are at A or E and need the other → use the A–E Skywalk
• If you are at B and need A or E (or the reverse) → shuttle is usually fastest with kids and bags

Step 3: Once your terminal is locked:

• In A → you have the Delta Sky Club
• In B → main options are American’s Admirals Club and The Lounge (Chase Sapphire Lounge by The Club)
• In C → cardholders and lounge network members have the Chase Sapphire Lounge by The Club – Terminal C and The Club (The Lounge)
• In E → international carriers and lounge network members funnel into The Club BOS plus the British Airways and Lufthansa lounges

Step 4: Going into downtown Boston or Back Bay:

• Budget‑minded and flexible on time → airport shuttles like Uber Shuttle can be economical on a per‑person basis
• Cheapest with only a backpack → MBTA Silver Line SL1 or Blue Line
• Simplest with kids and luggage → Uber / Lyft or a Logan Express coach if you are suburban bound

With more than about an hour before boarding, you may have room for a lounge visit or a sit‑down meal. With less than an hour, focus on getting to your gate and grabbing whatever food is nearby.

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Boston Logan International Airport at a glance: which terminal has what

Here is the whole airport in one view.

Terminal A

• Who uses it (headline): Delta Air Lines
• Key lounges: Delta Sky Club – Terminal A
• Best way to other terminals: You can walk between A and E via the Skywalk and use the free Massport shuttle between terminals

Terminal B

• Who uses it (headline): American Airlines, plus some JetBlue and Southwest
• Key lounges:
  • American Airlines Admirals Club – Terminal B
  • The Lounge (Chase Sapphire Lounge by The Club)
  • United Club (United passengers and eligible elites)
• Best way to other terminals: Shuttle to A, C, or E

Terminal C

• Who uses it (headline): JetBlue hub, plus TAP Air Portugal and Cape Air
• Key lounges:
  • Chase Sapphire Lounge by The Club – Terminal C
  • The Club (The Lounge) – Terminal C
• Best way to other terminals: Shuttle only, no pre‑security walkway

Terminal E (John A. Volpe International Terminal)

• Who uses it (headline): International arrivals, British Airways, Lufthansa, other foreign carriers
• Key lounges:
  • The Club BOS – Terminal E
  • British Airways Terraces Lounge
  • Lufthansa Business Lounge
• Best way to other terminals: A–E Skywalk to A, shuttle to B or C

Think of Boston Logan Airport as four small airports whose landside shuttles tie them together. Once you clear security in one, you are basically married to that terminal.

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How Boston’s four terminals actually behave

Boston has four passenger terminals: A, B, C, and E. Each has its own curbside, check‑in hall, and TSA checkpoint. There is no shared “central” security like you see at some hubs.

High‑level structure:

• Terminal A

  • Primarily Delta Air Lines.
  • Connected airside to its satellite concourse and landside to Terminal E by the A–E Skywalk.
  • Houses one major lounge, the Delta Sky Club – Terminal A.

• Terminal B

  • A mixed home for American Airlines, JetBlue, and Southwest.
  • This is where American check‑in lives. Counters run from very early morning into late evening.
  • Lounges include:
    • American Airlines Admirals Club – Terminal B
    • The Lounge (Chase Sapphire Lounge by The Club), a Chase Sapphire Reserve focused space
    • United Club, a carrier lounge for United passengers

• Terminal C

  • Heavy on JetBlue, with TAP Air Portugal and Cape Air also present.
  • Not walk‑linked pre‑security to the others, so every mis‑drop here costs a shuttle ride.
  • Strong lounge coverage:
    • Chase Sapphire Lounge by The Club – Terminal C
    • The Club (The Lounge) – Terminal C with Priority Pass, LoungeKey, pay‑at‑door, and prepaid access

• Terminal E (John A. Volpe International Terminal)

  • Handles all inbound international flights that need customs plus many long‑haul departures, with 11 gates in our data.
  • Base for foreign carriers like British Airways and Lufthansa.
  • Lounge cluster includes:
    • The Club BOS – Terminal E (Priority Pass, LoungeKey, pay‑in, plus directed premium/elite passengers)
    • British Airways Terraces Lounge for BA premium and oneworld elites
    • Lufthansa Business Lounge for Lufthansa Business, Star Alliance Gold, and Miles & More elites

To be fair, one nuance really matters: sometimes a U.S. carrier that mainly uses another terminal will run particular international departures from E. If your app says “Terminal E” at Logan Airport, trust that instead of trying to be clever.

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BOS lounge landscape: all 12, by terminal

You do not need to memorize all twelve lounges, but it helps to see how they cluster.

Terminal A

• Delta Sky Club – Terminal A
  • Delta passengers with Sky Club access, select premium cabins, and eligible elites

Terminal B

• American Airlines Admirals Club – Terminal B
  • Admirals Club members, day passes, eligible oneworld Sapphire and Emerald, select premium cabins
• The Lounge (Chase Sapphire Lounge by The Club)
  • Chase Sapphire Reserve primary cardholders and authorized users with same‑day boarding pass, plus Priority Pass issued by Sapphire Reserve, and pay‑in when capacity allows
• United Club
  • United Club members, eligible Star Alliance Gold, and premium cabin passengers per program rules

Terminal C

• Chase Sapphire Lounge by The Club – Terminal C
  • Card‑centric, focused on Sapphire Reserve and associated access rules
• The Club (The Lounge) – Terminal C
  • Priority Pass, LoungeKey, other partner networks, pay‑at‑door, prepaid passes

Terminal E

• The Club BOS – Terminal E
  • Priority Pass, LoungeKey, pay‑in, and select directed premium or elite passengers
• British Airways Terraces Lounge
  • British Airways First and Club World passengers, oneworld Emerald and Sapphire on oneworld flights, plus select BA and oneworld elites per rules
• Lufthansa Business Lounge
  • Lufthansa Business Class passengers, Star Alliance Gold on same‑day Star flights, eligible Miles & More elites

Across BOS, the access patterns shake out like this:

• Priority Pass / LoungeKey in The Club / The Lounge locations in C and E
• Pay‑at‑door or prepaid access at several lounges
• Alliance access for oneworld and Star Alliance elites in their respective carrier lounges
• Credit card access concentrated in the Chase Sapphire Lounges in B and C

Treat Boston airport lounge access as a layer on top of your terminal choice, not the other way around.

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Wrong‑terminal recovery: a realistic A → C stroller scenario

Here is the playbook I wish more people had before they hit BOS with kids.

Imagine this:

• You arrive at Terminal A at 3:00 p.m. because your app shows Delta somewhere in the booking.
• At the counter you realize your 4:05 p.m. flight is JetBlue out of Terminal C.
• Boarding is at 3:35 p.m., not 4:05. You have a stroller, a lap‑child, and two rolling bags.

You are already in a hole. Here is how I would run that next stretch.

Minute 0–2: Accept reality and move your feet

• Do not stand there arguing with the first agent you see.
• Look for the Massport shuttle bus stop outside Terminal A with signage for “All Terminals.” You are hunting anything that lists C.

Minute 3–10: Commit to the shuttle

• Shuttles typically come every 5–6 minutes.
• You unload the stroller, angle the bags, and get everyone on board. Families can do this, but only if nobody wanders off for snacks.

Minute 11–18: Ride and unload at C

• Ride time is short, but it can include quick stops at other terminals and some slow loading.
• At Terminal C, do a fast gear check on the sidewalk so you are not rearranging your carry‑ons at the ticket counter.

Minute 19–27: Straight to TSA at C

• Ignore anything that is not security. No coffee, no bathroom unless absolutely necessary.
• Remember, any TSA line you clear in the wrong building is useless. The only checkpoint that matters for this flight is the one inside C.

Minute 28–35: Speed‑walk to the gate

• Once you are airside, you are finally on the right chessboard.
• Terminal C is compact enough that, unless your gate is at the very far end and your toddler decides to melt down, a focused walk usually gets you there before the doors close.

Two big takeaways from that timeline:

• A terminal mistake at Boston Logan can easily add significant time for a family, even when the shuttle is free and reasonably frequent.
• The only way you save the connection is by not stacking extra “little” delays, like bathroom trips and food stops before you are in the correct terminal and through security.

This exact playbook works in reverse too. If you get dropped at C but your boarding pass says B or E, swap in the right direction, but the logic is the same: shuttle first, TSA in the printed terminal, then walk to the gate.

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Lounge decisions that do not blow up your terminal plan

Boston having multiple lounges across its terminals sounds luxurious. It is, but the trap is simple: fall in love with a lounge in the wrong terminal, then burn time you do not have trying to reach it.

Think about BOS lounges in three tiers.

1. Terminal‑locked carrier lounges

These are tied to one airline and one building:

• Delta in A → Delta Sky Club – Terminal A
• American in B → American Airlines Admirals Club – Terminal B
• United in B → United Club

If you are flying those carriers and already in their home terminal, these are straightforward. If you are flying someone else, do not plan your day around chasing them.

Access is the usual mix of membership, eligible premium cabins, and alliance status, with hours generally aligned to the airline’s flight banks.

2. Priority Pass and lounge network coverage

Priority Pass, LoungeKey, and similar networks are strong in Boston Logan Airport, especially in C and E:

• Terminal C

  • The Club (The Lounge)
    • Access via Priority Pass, LoungeKey, other partner networks, pay‑at‑door, and prepaid passes

• Terminal E

  • The Club BOS – Terminal E
    • Priority Pass, LoungeKey, pay‑in, and select directed premium or elite passengers

There is also card‑centric access at:

• Terminal B → The Lounge (Chase Sapphire Lounge by The Club) for Chase Sapphire