How many CONNECTING itineraries each source may return, per direction, airport pair and date. A connection has no single flight number, so it cannot be price-matched against other sources — every one is its own row, and every row is one billed item. 3 (the default) returns the three cheapest per source; 1 returns only the cheapest; raise it up to "Max offers per source" for the full set. This governs Skyscanner and Kiwi connections. It does not apply to nonstop flights (they merge across sources on their flight number), and it does not apply to the per-date cheapest fares from easyJet, Wizz Air and Norwegian — those already return at most one row per airport pair, and on a multi-airport city easyJet returns one row per airport it actually serves (searching London Heathrow returns Gatwick, Luton, Stansted and Southend), which no setting here changes.
Minimum:1
Maximum:100
Default:3