Gate B71 is where Dulles regulars detour for a heavy burger
This is the Five Guys in Terminal B by gate B71, post-security, and it has a 3.3 rating that undersells how many long-haul flyers make it their pre-Europe ritual. It’s the standard Five Guys setup: order at the counter, wait while they cook everything to order, then grab your bag and hunt for a seat near the B70–B72 cluster.
Expect to pay airport pricing: think roughly $$ for a burger, fries, and drink, noticeably higher than a strip-mall Five Guys but with the same oversized fry portions reviewers mention. One Google reviewer even calls out that a single fries easily feeds two, which matches what regulars do to keep both cost and food coma under control.
Lines here spike before evening banks of flights out of B, and multiple reviews mention 15–20 minute waits during those peaks. Build in at least an extra 20 minutes to your layover if you’re targeting a 6–10 p.m. departure, especially on United banks to Europe. This is not a grab-and-go-in-five-minutes stop.
Order the standard cheeseburger or little cheeseburger and customize with the usual toppings list; that’s what most people in line seem to be doing. The fries are the headline item: cooked in peanut oil, served in the familiar overflowing cup, and consistent enough that one reviewer said they’re “exactly what you expect,” which is a high bar for airport food. Shakes are hit-or-miss depending on how slammed the staff is.
Watch out for the seating crunch near B71; the area gets packed, with lots of people eating out of paper bags at nearby gates B69–B72. If your flight boards from a distant gate in A or C, grab your food here and plan to walk 8–10 minutes back. One practical move: mobile check your gate, eat at B71, then head to the AeroTrain with at least 25 minutes to spare.