The Pacific Northwest has a way of spoiling you before you even board — Seattle-Tacoma International's new international terminal is genuinely pleasant to move through, and if you're connecting or positioning through the Alaska Airlines lounges before a transatlantic departure, you'll find them among the better domestic options on the West Coast. What makes this particular routing interesting is the choice it presents: British Airways operates nonstop service to Heathrow, putting you in a Club Suite seat that, since its rollout, has become one of the more compelling hard-product offerings in transatlantic business class — doors, direct aisle access, and a forward-facing orientation that suits the overnight rhythm of this westbound-to-eastbound crossing beautifully. Delta's offering via their Atlanta or JFK hubs adds a connection but opens access to their Delta One suite product, which competes directly and appeals to SkyMiles loyalists who've accumulated equity worth burning on exactly this kind of journey.
The nine-and-a-half hour block time works in your favor psychologically — long enough to justify the cabin fully, short enough that you land at Heathrow mid-morning without the brutal disorientation of an ultra-long-haul arrival. Seasoned travelers on this route know to book the BA nonstop when premium availability opens, which tends to happen furthest in advance on shoulder-season departures. January through March and again in October and November represent the windows where the cabin is quieter, award space breathes more freely, and the overall experience feels less like a crowded commuter run and more like the transatlantic crossing it deserves to be. Heathrow's Terminal 5 — BA's home — rewards early arrivals with the Concorde Room if your status or ticket class qualifies, and that alone can reframe how you begin a London trip entirely.
