October is this market's high season and its highest difficulty setting: the best material, the biggest events, and the one month where showing up unbooked fails everywhere. The planner, by destination and lead time:
The two capitals
Salem is Halloween's world headquarters — Haunted Happenings runs all month, the streets costume themselves, and the arithmetic is brutal: near a million visitors, timed tickets on everything, hotels booked by August (the Hawthorne's ball sells out a year ahead). Go for the carnival, arrive by train from Boston, book two to three weeks minimum for tours and much longer for beds. New Orleans runs the adult version — Halloween week turns the Quarter into a costumed street opera, the ghost tours double as parades, and the Monteleone wants reserving with the tour tickets. Pick Salem for spectacle-with-history, New Orleans for the party with teeth.
The event heavyweights
Eastern State's Halloween Nights (late September through mid-November) is the country's benchmark venue event — haunted houses inside a real penitentiary; weeknights beat the sold-out weekends and the history-tour add-on beats everything. The Queen Mary mounts shipboard Halloween programming at scale, the Winchester runs its "Unhinged" productions through the real labyrinth, and the Stanley's Shining ball and masquerade own the mountain tier — costumes serious, tickets early.
The quiet-strong plays
Savannah and Charleston load events without Salem's crush — book two weeks out and the squares and gaslight do the rest. St. Augustine runs October strong but survives walk-ups better than anywhere on this list. Gettysburg's October sells its weekends out; the Myrtles' mystery tours and the Crescent's programs want the month's lead time. The Lizzie Borden overnight on Halloween itself is the list's single hardest reservation — months, and luck.
The late-September loophole
Nine-tenths of the atmosphere at half the crush: the last two weeks of September run the early events (Halloween Nights opens, the decorations rise, the weather turns) with bookable rooms everywhere. It is the planner's best open secret, especially for Salem and Savannah.
The master calendar
A year out: Hawthorne ball, Stanley masquerade. Summer: October beds in Salem, New Orleans, and the famous rooms anywhere. Six weeks: Eastern State and Alcatraz night dates (the on-sale windows), Savannah and Charleston tours. Two weeks: everything else — and if the calendar already beat you, take the loophole, or take November: the decorations linger, the crowds vanish, and the dead, by every guide's testimony, do not check the date.
