Terminal 3

F20 can be a 15‑minute hike from G at SFO

Terminal 3 sits on United turf with 35 gates spread across E and F, plus a secure connector into International G. United runs almost all its domestic SFO traffic from here, so the place fills fast during the 6–9 a.m. and late‑afternoon banks. Think of it as one big United campus: newer T3 West on the F side, older bits closer to the E‑gates, all tied into the G concourse through an airside walkway.

Layout, walking times, and that airside connector

From mid‑F (around F15–F18) to mid‑G usually runs 10–15 minutes on foot through the T3–International G connector, and you stay past security the whole way. Regulars avoid AirTrain for T3–G moves and just walk, especially if they’re heading to the Polaris Lounge in G before a long‑haul. If you’re landing at an E‑gate and connecting to G, some locals say to cut straight into the connector instead of following signs back toward the T3 food court, which adds a pointless loop.

Security and PreCheck timing

The main T3 checkpoint handles most United traffic, and the early‑morning rush hits around the 6–7 a.m. departure bank. Reddit flyers call out the far‑right lane as the best bet: that’s the dedicated PreCheck side, and at 5:30–6:30 a.m. it often moves noticeably faster than the center lanes. If you’re tight for a 6:15 a.m. departure, you want to be at the T3 doors 60 minutes ahead, not 30.

Food: Bourbon Pub, Yank Sing, Andale, Pizza Loca, Peet’s

Bourbon Pub sits on the F side and runs bar‑food prices in the $18–$25 range for burgers and mains; it’s the sit‑down choice if you have a full hour. Yank Sing shows up as the dim sum option in T3 with dumplings priced roughly $10–$15 per steamer, a nicer play than another sad burger when you’re delayed. Andale Mexican Kitchen offers burritos and tacos in the $12–$16 band, fast enough to grab between a 45‑minute turn. Pizza Loca and Peet’s Coffee dot the E/F concourses; a Peet’s latte will run you about $6 and keeps lines steady from 5 a.m. onward.

Lounges and where the crowds thin out

The American Express Centurion Lounge sits airside in T3 near the E‑gates, and cardholders report typical waits during the evening United bank around 5–7 p.m. If the lounge is on “waitlist,” flyers often walk 10 minutes toward F1–F6 and park at a regular gate instead. That F1–F6 pocket runs significantly quieter than the jammed F20–F25 cluster, with a better shot at grabbing a power outlet without hovering.

Shopping: local art, tech, and Levi’s

Near the center of T3 you’ll see the San Francisco Arts Commission Store with local art and gifts that actually say “San Francisco” without Golden Gate cliché, plus postcards for under $5. Tech on the Go fills the usual cable and charger gap with last‑minute USB‑C and international plug adapters, often at 20–30% above downtown prices but cheaper than missing a power cord entirely. A Levi’s store carries 501s and hoodies with SFO and SF logos; if you forgot a jacket and are staring at a foggy 55°F arrival, this is where you fix it.

What regulars do and what to watch

Frequent United flyers on FlyerTalk say they budget at least 90 minutes for domestic–to–International G connections through T3, even though the walk alone rarely tops 15 minutes. Complaints pile up around F20–F25 during peak banks, with people literally sitting on the floor because every seat is taken. The terminal also flips from remodeled to older in a few steps, which makes it feel like a maze when a last‑minute gate change sends you from an E‑gate to the far F‑end with 20 minutes to go.

One last tip

If your connection within the United system at SFO is under 60 minutes and involves T3 to G with checked bags, treat it as high‑risk and mentally plan for a misconnect; above 90 minutes, walk the airside connector, skip AirTrain, and you’re usually fine.