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Heathrow has four active terminals and your airline determines which one you use. Terminal 5 is British Airways territory, the newest and most polished. Terminal 2, the Queen's Terminal, handles Star Alliance carriers. Terminal 3 has Virgin Atlantic and several US carriers. Terminal 4 is smaller and serves a mix of international airlines.

The terminals are not walkable between each other. Free inter-terminal transfers run on the Elizabeth Line or Heathrow Express between T2/T3 (which share a central area) and T5. T4 requires a separate bus. Build in 60 minutes if you need to change terminals for a connection.

Immigration at 6 to 8 AM is slow. The morning wave of transatlantic red-eyes all land in the same window, and queues back up. E-gates work for US passport holders, which helps, but the volume is real. The airport is well-signed and functional, not beautiful. Shopping is extensive if you clear customs early.

Nine terminals arranged in a horseshoe around a central loop road that crawls during peak hours and stops entirely during evening pushes. Upper level is departures, lower level is arrivals, and the drive between terminals can take 20 minutes even though the physical distance is trivial. Signage works if you already know where you are going and fails if you do not.

Walking between terminals means exiting security and re-entering, which makes airside connections slow and frustrating. The Tom Bradley International Terminal sits at the bend of the horseshoe and handles most international traffic. Terminal age and condition vary widely: some have been renovated in the last few years, others look and feel decades old. An Automated People Mover is under construction to connect the terminals to a new Metro station and a consolidated car rental facility.

Security lines swing unpredictably by terminal and time of day. The evening red-eye push backs up multiple terminals simultaneously. Budget extra time and do not rely on a short queue. Food and retail inside security have improved recently, particularly in the Bradley terminal and the recently refreshed domestic terminals.

Ontario International Airport has two terminals connected by a short outdoor walkway, serving the Inland Empire east of Los Angeles. The airport is uncrowded by LA standards. Security lines rarely stretch past 20 minutes. Walking from the curb to your gate takes five to ten minutes.

The terminals have been modernized with updated check-in areas and expanded food options past security. Ontario handles a fraction of the traffic that LAX sees, which means shorter lines at every step: check-in, TSA, and baggage claim. For travelers in Riverside, San Bernardino, or the eastern suburbs, Ontario cuts over an hour of freeway driving each way compared to LAX.

A single-terminal airport where you walk from the curb to your gate in under 10 minutes, and security rarely takes more than 20. John Wayne serves Orange County from Santa Ana and exists because LAX is an hour north on a freeway that almost never flows. The terminal is compact, modern enough, and refreshingly easy to navigate.

The runway is short and the airport operates under strict noise restrictions. Departing aircraft use reduced thrust and climb steeply to comply with noise abatement rules over the Newport Beach neighborhoods south of the field. These restrictions cap daily operations, which is why nonstop service from distant cities remains limited. The steep departure angle is noticeable if you have not experienced it before.

SNA sits 10 minutes from Irvine, 15 from Disneyland in Anaheim, and around 40 miles southeast of downtown LA. For anyone whose destination is Orange County, this airport removes LAX from the equation entirely. No rail connection exists. You need a car or rideshare to get anywhere from here.

Hollywood Burbank is the smallest of the three Los Angeles-area airports and the fastest to get through. One terminal building with a layout simple enough that you can see your gate from the security line. Some flights still board from the tarmac via stairs, which feels like a regional airport dropped into a metro of 13 million people. The terminal is compact, with limited food options past security and no real shopping.

What Burbank gives up in size it gains in speed. Security lines rarely stack up. Baggage claim is steps from the gate area. The parking lot sits across the street from the terminal entrance. The whole experience, from car to gate, takes less time than navigating the LAX terminal loop road. For anyone on the Valley side of Los Angeles, that speed is the point.

Long Beach Airport is one of the smallest commercial airports in the LA metro, with an open-air layout that feels more like a regional station than a modern terminal. Outdoor walkways connect check-in to the gates. Walking distances are measured in steps, not minutes. Security lines are short, parking is close, and the whole experience is the opposite of LAX.

The terminal has a handful of food and drink spots past security but nothing extensive. Strict city noise ordinances limit the number of daily flights, which keeps the airport small and quiet but restricts which airlines and routes can operate here. For routes it serves, the convenience is hard to beat.