The best empty leg routes, and the months they actually appear

Empty leg inventory is concentrated, not spread evenly across the map. A handful of corridors (New York–South Florida, Los Angeles–Las Vegas, the ski-country runs into Aspen and Eagle) produce a large share of all listed legs, and each corridor has a season when it floods. Watch the right route in the right month and you’ll see multiple legs a week. Watch the wrong one and you’ll wait.

The reason is mechanical. An empty leg is the shadow of a charter flight: every paid trip somewhere creates a repositioning flight near it. So empty legs cluster wherever charters cluster, which means wealth corridors, second-home geography, and event calendars decide the map.

The corridors that produce the most legs

Corridor	Peak season	Typical aircraft	What drives it
New York – South Florida	November–April	Light to heavy	Snowbird migration, the densest charter corridor in the US
Los Angeles – Las Vegas	Year-round	Light, turboprop	Constant event and weekend traffic, 45-minute hop
Los Angeles – San Francisco	Year-round	Light, midsize	Business shuttle traffic both directions
New York – Hamptons/Nantucket	June–August	Turboprop, light	Summer weekend waves, Friday out, Sunday back
Denver/ski metros – everywhere	December–March	Midsize, super-mid	Aspen, Eagle/Vail, Jackson Hole holiday traffic
Texas triangle (Dallas–Houston–Austin)	Year-round	Light	Business traffic between in-state bases
London – Paris / Nice / Geneva	May–September	Light, midsize	Mediterranean summer season, Alps in winter
New York – London	Spring and fall	Heavy	Transatlantic repositioning after one-way bookings

Treat the table as a probability map, not a schedule. No specific leg is guaranteed; the corridor pattern is.

The seasonal calendar, month by month

Winter belongs to Florida. From November through April the southbound charter wave out of the Northeast creates a steady northbound return flow of empty aircraft, and the reverse around holiday weekends. February adds ski country: legs in and out of Denver spike around Presidents’ Day week, often on super-midsize aircraft because mountain airports and family luggage demand them.

Late April and May reverse the flow. Snowbirds head home, so the discounted direction flips: now the cheap legs run northbound out of Miami and Palm Beach as operators reposition for summer. The same flip happens in reverse every October.

Summer moves the action to short hops and to Europe. The Hamptons run from Teterboro is the classic: jets ferry out Friday afternoon and come back empty, then do the opposite on Sunday. In Europe, London to Nice and Ibiza fills the board from May through September, with the same weekend rhythm.

September and October are the quiet bargain window. Charter demand dips between summer and the holiday rush, operators reposition fleets for winter, and the buyers who were competing with you in February are back at work. Discounts on what does appear run deeper.

Direction matters as much as route

Empty legs run against the paying traffic. When everyone charters New York to Palm Beach in December, the empty aircraft fly Palm Beach to New York. If your trip happens to run with the repositioning direction, you’ve found the sweet spot: maximum inventory, minimum competition from other flexible buyers.

This is worth planning around. A northbound Florida trip in January or a Vegas-to-LA Monday flight puts you in the discounted direction, and those legs sit on the board longer because fewer buyers want them.

Event spikes you can set a watch by

Big events create one-way charter surges and a matching wave of empty returns within 48 hours: Super Bowl week, the Masters, Art Basel Miami in early December, F1 weekends in Las Vegas and Austin, Monaco Grand Prix out of Nice. The pattern is always the same shape: inbound legs get scarce and expensive before the event, outbound empty legs flood the board the morning after it ends.

If you can travel the day after an event rather than the day of, the same corridor switches from seller’s market to buyer’s market.

What this means for your alerts

Pick your home metro, then set alerts before the season starts, not during it. A New York alert set in October catches the whole winter Florida wave; one set in February catches half of it. The corridors above tell you which months your metro’s board will be busy, and the flexibility playbook covers what to do when a match lands.

Or skip the theory and look at the pattern live: the current board shows exactly which corridors are producing legs this week.