Hawaiian Airlines: Often offers strong inter-island connectivity and premium service on transpacific routes; may route via West Coast partners for BOS-origin travelers. Alaska Airlines: Competitive fares and solid West Coast connections through Seattle or Los Angeles; good mileage program for West Coast flyers. Delta, United, American: Large networks with multiple West Coast hubs (SFO, LAX, SEA, PHX) providing one-stop itineraries from Logan International Airport (BOS) to Ellison Onizuka Kona International Airport at Keahole (KOA). Choose based on preferred connection city, luggage needs, seat options, and loyalty program benefits. For February travel, compare bundled fares that include checked bags and seat assignments to avoid costly add-ons. CTA: Compare airlines side-by-side and filter for baggage-included fares for February Boston to Kona travel.