“The Default”: Alaska Airlines Eyes Interisland Boeing 737s To Replace Hawaiian’s Aging 717s

Alaska Air Group is signaling a meaningful shift in the long-term fleet strategy for Hawaiian Airlines' interisland network, with Boeing 737s — specifically the 737-800 variants already operating within Alaska's mainline fleet — emerging as the leading replacement candidate for Hawaiian's aging Boeing 717s. The disclosure came from Alaska's CFO and now-President Shane Tackett at the IATA Annual General Meeting in Rio de Janeiro, where he described 737s as "the default at this point" and "the most likely answer" to eventually succeed the 717. While Tackett was careful to characterize the transition as non-imminent, the public framing of a preferred aircraft type signals that internal planning has progressed beyond early-stage speculation. Hawaiian's 717 fleet, configured for 106–134 passengers and built explicitly for the high-frequency, short-sector demands of island-hopping, has no direct modern successor in production, which has forced Alaska Air Group to evaluate options that were not originally designed for that specific mission profile.

The operational gap between the 717 and the 737-800 is substantial and warrants serious consideration for pilots and operators who understand both aircraft's performance envelopes. The 737-800 typically seats 160–189 passengers — a 25 to 75 percent capacity increase over the 717 — and carries a range of roughly 2,935 to 3,115 nautical miles, far exceeding what interisland sectors, which often clock in at 25 to 45 flight minutes, will ever demand. The mismatch between airframe capability and mission is not necessarily a disqualifier, however. Southwest Airlines already operates 737 MAX 8s on routes like Honolulu (HNL) to Kahului (OGG), providing a direct operational precedent that larger single-aisle narrowbodies can turn profitably on ultra-short Hawaiian sectors. The key variable is load factor discipline: a 737 spreading fixed costs across nearly 180 seats on a sub-hour segment requires consistently high passenger volumes to generate the same unit economics a 717 achieves at 120 seats. For Hawaiian's interisland operation, which historically runs some of the highest frequency-to-market-size ratios in domestic U.S. aviation, that demand must be reliably present across all departure banks throughout the day.

Fleet commonality is the strategic logic driving the 737's frontrunner status, and it is the lens through which pilots and chief pilots at Alaska Air Group operations should interpret this decision. Alaska already operates an ETOPS-certified 737 fleet across transoceanic routes to Hawaii and Mainland destinations, meaning the airline's maintenance infrastructure, pilot training pipeline, simulator availability, and parts inventory are already deeply aligned with the Boeing narrowbody family. Introducing the A220 or the Embraer E195-E2 — both of which have been discussed as 717 successors and both of which fit the 717's capacity segment far more precisely — would require stand-alone type rating programs, separate maintenance contracts, and parallel spare parts ecosystems that carry long-term cost burdens regardless of per-aircraft efficiency gains. The Airbus A220-100, at 100–125 seats, and the E195-E2, at 120–146 seats, are arguably better-optimized replacements from a pure mission standpoint, but the organizational overhead of a new type certification and fleet management structure within a combined Alaska-Hawaiian entity complicates that calculus significantly.

For working pilots at both carriers, the eventual fleet decision carries tangible professional implications. Hawaiian Airlines pilots currently hold 717 type ratings specific to that aircraft's MD-95 lineage, and a transition to 737 operations would require formal retraining and potential seniority-driven bidding realignments within the combined pilot group, whose contract and scope provisions remain a point of ongoing labor discussion following the Alaska-Hawaiian merger. Alaska's 737 pilots, by contrast, would find the interisland mission a significant operational departure from their current long-haul overwater assignments — high-frequency short sectors demand a different fatigue management posture, faster turnaround discipline, and adjusted descent and approach planning compared to transoceanic routes. Part 121 operators monitoring this situation should also note that the 717's quick-turn performance and narrow ground footprint have historically enabled gate configurations at smaller interisland terminals that a wider, heavier 737 may stress at capacity-constrained airports like Hilo (ITO) or Lanai (LNY).

The broader significance of Alaska's interisland fleet decision extends well beyond Hawaii. It reflects a widening industry pattern in which post-merger fleet rationalization consistently favors commonality over mission optimization, a trend visible at United after its Continental merger, at American following its US Airways integration, and now emerging at the Alaska-Hawaiian combination. Airlines operating diverse fleets inherited through acquisition have repeatedly concluded that the training, maintenance, and scheduling benefits of a single narrowbody family outweigh the marginal operational efficiency of a purpose-built regional type. For business aviation and charter operators watching this space, the gradual retirement of the 717 from interisland service could also influence the used aircraft market and MRO demand for that type. With fewer major operators sustaining 717 support infrastructure, Part 135 and charter operators who rely on that supply chain for parts and trained technicians may face increasing pressure on maintenance costs and availability as the 717's commercial operator base continues to contract.