Seattle (SEA) airport guide & terminal map

Last updated: June 2026 by the Myflyyatra travel team. Gate and airline assignments change, so always confirm your gate with your airline or your boarding pass before you travel.

Seattle-Tacoma International Airport (SEA) is the biggest airport in the Pacific Northwest. Most people call it Sea-Tac. In 2025 it set a record with about 52.7 million passengers, making it the 11th-busiest airport in the United States — and it has been named the best airport in North America by Skytrax three years running. It is busy (and often crowded, since it now carries far more travelers than it was designed for), but it is easy to get around once you understand the layout. This guide walks you through the full Seattle airport map — every terminal, all the gates, where to eat, and how to find your bag. Use it to plan your trip before you fly, so you spend less time lost and more time relaxing.

Sea-Tac Airport quick facts

How the Seattle airport map is laid out

Sea-Tac has one main terminal, also called the Central Terminal. From the middle of this terminal, four arms stretch out. These arms are the concourses: A, B, C, and D. The whole shape looks a bit like the letter X.

Between the concourses sit two more buildings — the satellite terminals:

• North Satellite (N Gates) — 20 gates, used almost entirely by Alaska Airlines

• South Satellite (S Gates) — 14 gates, used by international carriers

You cannot walk to the satellites. Instead, you ride a free underground train called the SEA Underground. It runs after you pass security and takes only a minute or two.

Here is the simple version of the Seattle airport terminal layout:

• Level 5 – Ticketing and check-in

• Level 4 – Walkway to the Link Light Rail and parking garage

• Level 3 – Baggage claim and ground transport (pick-up)

Good to know — Upgrade SEA: The airport is in the middle of the largest expansion in its history (the Sustainable Airport Master Plan), including a big Concourse C expansion, with work ramping up around the 2026 World Cup. Expect some signage, gate, and walkway changes — check your airline app on the day you fly.

Seattle airport main terminal map

The Central Terminal is the heart of Sea-Tac. This is where you check in, drop bags, and clear security. Check-in counters sit on Level 5. There are six security checkpoints, and you can use any of them with a valid boarding pass — pick the one closest to your gate to save time.

After security, follow the signs to your concourse or to the train for the satellites. The terminal also has shops, coffee stands, and rest areas while you wait.

Seattle airport gate map: the four concourses

Each concourse has its own set of gates. Below is a clear breakdown so you know roughly where to go. Gate numbers can shift, so always check your boarding pass for the exact gate.

• Concourse A — the southern arm. Delta Air Lines runs many flights from here, plus some international connections. A Delta Sky Club sits near the start of the concourse, and the International Arrivals Facility is right next door.

• Concourse B — the southwest arm. It handles many shorter flights, including Southwest routes and some Delta service. It is one of the closer concourses to security, so the walk is short.

• Concourse C — on the north side, a main area for Alaska Airlines, with plenty of food, shops, and the Alaska Lounge. A large new two-story Alaska flagship lounge is being added as part of the C expansion.

• Concourse D — handles U.S. and some international flights. Alaska and American both use this concourse. Look here for sit-down dining and lounge space.

North Satellite (N Gates) map

The North Satellite is mostly an Alaska Airlines zone. It went through a big remodel and now feels modern and open, with a spacious Alaska Lounge, lots of charging spots, a nursing suite on the mezzanine, and a strong food lineup. To reach it, ride the SEA Underground train from near Concourse C or D.

South Satellite (S Gates) map: the international terminal

The South Satellite is Sea-Tac's international gateway. Most long-haul international flights leave from here. Airlines that use the S Gates include Emirates, British Airways, ANA, Japan Airlines, Korean Air, Cathay Pacific, EVA Air, Finnair, Hainan, and China Airlines, among others. This is also where you find duty-free shopping and international lounges. To reach the South Satellite, take the train from near Concourse B.

2026 update — international arrivals have changed. If you land from abroad, you now collect your bags and clear U.S. Customs at the modern International Arrivals Facility (IAF) next to Concourse A — not in the South Satellite itself. Passengers arriving at the South Satellite walk across a sky-bridge over the tarmac to reach the IAF, so the old underground-train step is no longer needed.

Which terminal is my airline at Sea-Tac?

This is the most common question travelers ask. Here is a quick airline-to-concourse guide based on the official Port of Seattle listings. Gate areas can change with the season, so confirm with your boarding pass before you go.

Good to know: Alaska Airlines is the home hub at Sea-Tac and runs roughly half of all flights here, which is why it spreads across three areas — C, D, and the North Satellite. Since Alaska's merger with Hawaiian, some of its new long-haul international flying (such as to Tokyo, and planned service to Seoul and Rome) uses Hawaiian's widebody jets.

How to get between terminals at Seattle airport

Moving around Sea-Tac is simple once you know the trick. For the concourses (A, B, C, D), you can walk — they all connect after security. For the North and South Satellites, ride the free SEA Underground, an automated train that runs underground, comes often, and takes only a minute or two. No ticket and no fee — just follow the signs.

Lounges at Sea-Tac

SEA has about 12 lounges. The main ones:

• Alaska Lounges in Concourse C, Concourse D, and the North Satellite — open to Alaska Lounge+ members, eligible premium tickets, or a day pass (around $45–60).

• Delta Sky Clubs in Concourse A and Concourse B — for Delta premium passengers, Sky Club members, and eligible Amex cardholders.

• Amex Centurion Lounge for Platinum and Centurion cardholders.

• The Club at SEA and the United Club, which offer paid day passes.

Security: checkpoints, SEA Spot Saver, PreCheck & CLEAR

Sea-Tac has six checkpoints in the main terminal, and you can use any of them. Two tools save real time: TSA PreCheck (available at two checkpoints) and CLEAR (at checkpoints 1 and 6, daily 4 a.m.–10 p.m.). SEA also runs a free virtual-queue program called SEA Spot Saver that lets you reserve a security time slot in advance and skip the standby line — worth using during busy holiday weekends, when SEA lines are notoriously long. For international arrivals, Global Entry and Mobile Passport Control speed up the customs process at the IAF.

Seattle airport food map

Sea-Tac has food in every concourse, from quick grab-and-go counters to sit-down spots. Here is where to look:

• Concourses A and B: Local favorites and quick bites — a popular pick is Beecher's Handmade Cheese.

• Concourse C: A wide mix of dining and coffee, including Starbucks.

• Concourse D: Sit-down meals and lounges, with options like sushi and pizza.

• North Satellite (N Gates): A newly remodeled food court with strong local and quick choices.

• South Satellite (S Gates): Dining built for long international waits.

Tip: If you have a tight connection, eat in the concourse where your gate is. The satellites are great, but the train ride eats into your time.

Family & accessibility facilities

SEA is genuinely family-friendly: there are children's play areas between the Central Terminal and Concourse A and near gate D25, nursing rooms and pods throughout the airport (plus a nursing suite in the North Satellite), and even a couple of Little Free Libraries near Concourse A. The airport is fully accessible, and wheelchair assistance can be arranged through your airline.

Baggage claim and arrivals map

When you land, head down to Level 3 for baggage claim. The carousels are numbered and assigned by airline — as a rough guide, Delta often uses the southern carousels and Alaska the northern ones — and screens above each carousel show your flight. If you arrive from an international flight, you first collect your bags and clear customs at the International Arrivals Facility next to Concourse A before you reach the public baggage claim.

How to get to and from Seattle airport

Link Light Rail (cheapest and fastest to downtown)

The Link Light Rail (1 Line) is the easiest way to reach downtown Seattle. The SeaTac/Airport Station connects to the airport parking garage by a covered walkway on Level 4.

• Cost: about $3 per adult (riders 18 and under ride free)

• Time: around 38–40 minutes to downtown (Westlake Station)

• Frequency: trains every 8–15 minutes

A newer 2 Line also runs across Lake Washington to Bellevue and Redmond, which helps if you are heading to the Eastside.

Taxi, rideshare, and driving

If you drive, use International Boulevard or SR-99 to reach the airport. Drop-offs are at the Level 5 curb, pick-ups at the Level 3 Ground Transportation Plaza. There is a free cell phone waiting lot off International Blvd for pickups.

Parking

The main garage sits right across from the terminal and connects by covered walkways (general rates are roughly $40–50 per day — confirm current pricing and pre-book at portseattle.org, as rates change by season and lot). Off-airport lots nearby are cheaper and run free shuttles.

Hotels near Sea-Tac

There is no hotel inside the terminal, but a cluster of hotels sits along International Boulevard just outside the airport, most with free shuttles to the terminal — a handy choice for very early departures, long layovers, or red-eye arrivals from India.

Flying In for the 2026 FIFA World Cup

If you are traveling this summer, note that Seattle is a 2026 FIFA World Cup host city, with matches at Lumen Field in downtown Seattle between mid-June and early July 2026. SEA is the gateway for fans, and the Link Light Rail connects the airport directly to downtown near the stadium in about 40 minutes for around $3 — by far the easiest way in on a match day, when traffic and rideshare demand spike. Expect the airport and trains to be busier than usual throughout the tournament.

Flying From Seattle to India + Connection Guide

Sea-Tac does not have a nonstop to India, so every route connects through a hub — often Dubai on Emirates (which flies SEA nonstop), or through a European or Asian hub on Delta and its partners.

Arriving back from India and connecting to a U.S. flight — the step-by-step. International flights into SEA are processed at the International Arrivals Facility next to Concourse A:

1. Deplane at the South Satellite (or your arrival gate) and follow signs to the International Arrivals Facility — South Satellite arrivals cross the sky-bridge to reach it.

2. Collect all your checked bags, even if they are tagged through.

3. Clear U.S. Customs and immigration. Global Entry or Mobile Passport Control speeds this up.

4. Re-check your bags for your onward flight at the connection counters.

5. Go to your departure concourse and clear security again. From the IAF you are right by Concourse A, with the rest of the concourses a short walk and the satellites a quick train ride away.

For an international-to-domestic connection, plan for at least 2.5–3 hours after a long flight from India, since you must clear customs, re-check bags, and pass security again.

Popular flights from Seattle (SEA) to India

Flying from Seattle to India? Sea-Tac connects to all major Indian cities through one-stop routes. Below are popular fares to help you plan. Prices are starting estimates and change with season and demand.

Ready to book your trip to India? MyFlyyatra finds you the best deals on Seattle-to-India flights, with friendly support every step of the way. Compare fares and reserve your seat today.

Note: Airline and terminal assignments at SEA can change, including during ongoing airport upgrades. Always confirm your terminal and gate with your airline or your boarding pass before you travel.