What Terminal Is Delta at Boston Logan (BOS)? Terminals A and E, Gates, and Connections

I spent twelve years working Delta gates down in Atlanta, and Boston is one of the few airports where I still watch seasoned travelers guess wrong about where to start. Logan doesn’t hand Delta a single terminal and call it a day. So here’s the straight version, no throat-clearing.

Quick answer: Delta uses both Terminal A and Terminal E at Logan

At Boston Logan (BOS), Delta flies from both Terminal A and Terminal E. Most domestic flights leave from Terminal A, every international flight leaves from Terminal E, and — this is the part the thin pages skip — some domestic flights leave from Terminal E too.

According to Delta’s own Boston airport guide, all of the airline’s international flights operate out of Terminal E, while domestic flights typically use Terminal A. But “typically” is doing real work in that sentence. Delta’s Boston airport advisory tells flyers flatly that domestic Delta departures use both A and E, and to confirm your terminal in the Fly Delta app or My Trips before you head out.

That’s the whole answer to the question you typed. Terminal assignment here follows your specific flight, not a tidy domestic-versus-international rule. The rest of this guide keeps you from standing at the wrong curb.

Terminal A: Delta’s domestic hub at Logan

Terminal A is Delta’s home base for domestic flying at Logan, and it’s really two buildings working as one. The Main Terminal holds gates A1–A11. A separate Satellite Concourse holds gates A13–A22. The two are joined by an underground pedestrian tunnel with moving walkways, so you don’t surface outdoors to get between them — according to iFly’s Logan terminal guide, that tunnel is the connection, and the terminal opened in its current form on March 16, 2005.

Here’s a detail no competitor page bothers to mention: when Terminal A was redeveloped, it became the first airport terminal in the world to earn LEED certification from the U.S. Green Building Council, per Delta’s news hub. Nice trivia, but the practical takeaway is simpler — this is a modern, walkable domestic terminal, and once you’re through security your gate is either in the Main Terminal (A1–A11) or a short indoor walk out to the Satellite Concourse (A13–A22).

Terminal E: where every international Delta flight departs

If your Delta flight leaves the country, it leaves from Terminal E. Full stop. Terminal E is Logan’s international building, and it just got a lot bigger. A $640 million, 390,000-square-foot expansion — designed by AECOM and luis vidal + architects, according to Engineering News-Record — added four new gates, taking the terminal from 12 to 16, and officially opened on November 14, 2023, after a quieter soft opening that August.

Massport, the authority that runs Logan, isn’t done either. The Boston Globe reported that Massport still hopes to add three more gates to Terminal E, which would bring it to 19, though no construction timeline has been set.

One caution so you don’t over-learn the rule: “international equals Terminal E” is reliable, but “domestic equals Terminal A” is not. Some domestic Delta flights operate out of Terminal E as well, which is exactly why you check your specific flight rather than assume.

How to find your exact gate and terminal before you leave for the airport

Because Logan won’t let you shortcut this with a rule of thumb, do the ten-second check before you leave home.

• Fly Delta app. Open your trip; the terminal and gate sit right on the flight card.
• My Trips on delta.com. Same information if you’d rather use a browser.
• Your boarding pass and confirmation email. The terminal is printed there, but treat the gate as a draft — assignments move.

Delta itself points travelers to the app and My Trips to confirm the terminal, precisely because it varies flight to flight. You can also pull up BOS’s live departures and gate board to see what’s actually happening on the day you fly. And if you’re driving in, it’s worth knowing how Logan regulars actually handle parking before you commit to a lot.

Connecting between Terminal A and Terminal E

This is where Logan earns its reputation, and where the thin pages leave you stranded. Terminals A and E are not connected after security. If your Delta itinerary has you switching between them, you’ve got three ways across, and Delta’s Boston airport map lays out all three.

How to cross	When it runs	Where it stops
Delta’s free shuttle bus (for domestic–international connections)	4:45 a.m. to 11:00 p.m. daily	Terminal A: by the food court near gates A17–A18 · Terminal E: near gate E13
Massport inter-terminal shuttle (bus #11)	Roughly every 5–6 minutes	Terminal A: curbside, on the lower level
Walk via the Skywalk Bridge	Anytime	Escalator up from the Terminal A lobby → about a 5-minute walk to Terminal E

A few honest notes on that table. Delta’s free shuttle is aimed at connecting passengers moving between domestic and international flights; the Terminal A stop sits by the food court on the satellite side near gates A17–A18, and the Terminal E stop is near gate E13. The Massport shuttle is the public, anyone-can-ride option — low-floor buses with luggage racks and wheelchair lifts, running curbside from the lower level at Terminal A on bus #11. And the walk is genuinely short: take the escalator up from the Terminal A lobby to the Skywalk Bridge and it’s about five minutes over to Terminal E, indoors the whole way.

If your layover is long enough that you’re tempted to leave and come back, read what really happens if you have to leave the airport during a layover first — Logan’s re-entry math isn’t always in your favor.

International arrivals connecting to a domestic flight: budget time for security

Here’s the single most important paragraph in this guide, so slow down. If you land at Logan on an international Delta flight and you’re connecting to a domestic one, you cannot stay airside the whole way. Per Delta’s Boston guidance, international arrivals clear U.S. Customs and Border Protection in Terminal E, then take the Massport shuttle over to Terminal A, and then clear security again. There is no post-security connection between A and E. None.

Translation from a former gate agent: don’t book a tight international-to-domestic connection at Logan and expect to sprint it. You’re re-clearing security in a different building after customs, and that’s the step that eats connections. Give yourself real time.

Delta Sky Clubs and the Delta One Lounge at BOS

Delta runs three Sky Clubs at Boston, which is a lot for one airline at one airport, and they’re split across both terminals.

In Terminal A, there are two. According to LoungeReview, the smaller of the pair sits on the mezzanine level near gate A7 in the Main Terminal — steps from the security checkpoint, but no showers. The larger, newer club is out in the Satellite Concourse near gate A18. So wherever your domestic gate lands, there’s a Sky Club within reasonable reach.

Terminal E is where Delta went big. Its third Boston club, the roughly 21,000-square-foot “E Concourse Club,” serves international departures, seats more than 400 guests, and overlooks Boston Harbor. Delta’s news hub lists two beverage bars, one premium bar, five shower suites and six soundproof phone booths — and says the addition pushes Delta’s simultaneous Sky Club capacity at BOS past 1,000 guests.

Inside that same space, Delta opened its third Delta One Lounge on December 11, 2024. This one’s reserved for Delta One customers: premium check-in before security and a three-course, seafood-centric dinner that Delta says is served in under an hour — built for people with a long-haul to catch.

No Delta status, or not flying up front? You’ve still got options. Here’s our take on getting lounge access without elite status so you’re not stuck paying gate-side prices for a bad sandwich.

What’s new at Logan that affects Delta flyers

Logan is a moving target right now, and it helps to know why the signage keeps changing. Massport’s 2024 year in review reported a record 43.5 million passengers, including more than 9 million international travelers — also a record — as the airport added nonstop international service like Delta’s route to Liberia, Costa Rica, plus new carriers such as Austrian Airlines and Etihad. More international flying is exactly why Terminal E keeps expanding.

There’s also relief coming for the terminal-shuffle problem. Boston.com reported that a post-security connector between Terminals A and B is in planning, which would eventually let passengers move between more terminals without re-clearing security. It’s a separate project from the A–E shuttle-and-walk setup you’ll use today, and it isn’t built yet — but it’s a sign Logan knows the connection experience needs work.

If your trip also touches New York, we mapped the same question there in our guide to Delta’s terminal at JFK.

FAQ: Delta at Boston Logan

Does Delta fly domestic out of Terminal E at BOS? Yes. Most domestic Delta flights use Terminal A, but some operate from Terminal E, and all international flights use E. Check your specific flight in the Fly Delta app or My Trips.

How do I get from Terminal E to Terminal A? Three ways: Delta’s free connection shuttle (4:45 a.m.–11:00 p.m. daily), Massport’s public inter-terminal shuttle on bus #11 (roughly every 5–6 minutes), or a five-minute walk across the Skywalk Bridge from the Terminal A lobby.

Is there a Delta Sky Club in Terminal E? Yes — the roughly 21,000-square-foot E Concourse Club, which overlooks Boston Harbor and includes five shower suites. The Delta One Lounge, opened December 11, 2024, sits inside it for Delta One customers.

Do I need to go through security again connecting from an international to a domestic Delta flight at BOS? Yes. You clear U.S. Customs in Terminal E, take the Massport shuttle to Terminal A, and re-clear security. There’s no post-security path between the two terminals, so leave extra time.