Interisland Flight Baggage 2026: Hawaiian and Southwest Fee Structure

Anyone relocating to Hawaii quickly learns that interisland travel is less like a domestic flight and more like a regional bus route with luggage rules that can double the price of a $79 fare. Hawaiian Airlines and Southwest Airlines dominate the interisland market between Honolulu, Kahului, Lihue, and Kona, and their baggage policies are the single biggest variable a new resident has to price in.

The difference is not marginal. Hawaiian charges $30 for the first checked bag on interisland routes unless the traveler holds a HawaiianMiles Pualani status or a co-branded credit card. Southwest, which entered the interisland market in 2019, changed its bag policy on April 9, 2026: non-Hawaii-resident fares now pay $30 for the first checked bag and $40 for the second. Hawaii residents with a Hawaii mailing address in their Rapid Rewards profile still check two bags free. The gap that once turned into hundreds of dollars across a year of ohana visits is now narrower.

Boarding order, gate location, and third-carrier options from Mokulele and Southern Airways then layer on top of the fee split. This piece works through each layer in the order relocating households actually confront it, from booking through walking on the jet bridge at HNL, OGG, LIH, or KOA.

The Baggage-Fee Split at a Glance

Interisland flights average 40 minutes in the air between Honolulu (HNL) and Kahului (OGG), 45 minutes between HNL and Lihue (LIH), and 50 minutes between HNL and Kona (KOA). Base fares fluctuate between $59 and $189 one-way. Baggage fees can add anywhere from $0 to $200 to that base, depending on the carrier, the traveler’s status, and the bag itself.

The table below lays out the direct comparison for a single one-way ticket booked in economy, without status or a co-branded card, at time of check-in.

Two free bags is not a small perk on interisland routes because a large share of trips are one-way moves: a couch bound for a new rental in Kihei, a surfboard headed to a Hanalei winter, a college student ferrying dorm gear from Manoa back to Kauai. Hawaiian’s pre-2026 $25/$35/$50 stack was long the industry standard here. Both carriers raised interisland bag fees in 2026 and now charge the same rates: $30 for the first bag and $40 for the second.

Hawaiian Airlines Interisland Baggage Rules

Hawaiian Airlines operates the densest interisland schedule in the state, with more than 170 daily interisland flights on Boeing 717 aircraft that seat 128 passengers. Its baggage rules for interisland routes are lighter than for its transpacific or international network, and the fee structure is separate from what it charges on flights to the mainland.

Checked bag fees and weight limits

On interisland segments, Hawaiian charges $30 for the first checked bag, $40 for the second, and $150 each for the third through sixth (fee increased in 2026). Each bag must weigh 50 pounds or less and measure no more than 62 linear inches (length + width + height). Overweight fees stack on top of the base fee: $50 for 51–70 pounds, $200 for 71–100 pounds.

Oversize and irregular items

Surfboards, bicycles, and coolers all count as one checked piece on Hawaiian interisland. A single surfboard bag containing up to two boards runs $35 on interisland routes. Bicycles ship for the standard checked-bag fee if they fit within 62 linear inches, which usually requires partial disassembly. Coolers must be sealed with tape and drained before drop-off at the ticket counter.

Payment and timing

Hawaiian collects baggage fees at check-in through its app, kiosks at HNL Terminal 1, or agents at ticket counters. Prepaying online 24 hours out does not discount the fee, unlike some mainland carriers. Cash is not accepted at HNL kiosks; only credit and debit cards work. Fees post as separate line items on the credit card statement.

HawaiianMiles Waivers and Elite Tiers

HawaiianMiles members earn free interisland bags through two paths: elite status or a co-branded credit card. Elite tiers reset every calendar year based on flown miles or segments. The card path requires no flying at all, which changes the math for a household that flies interisland six or eight times a year.

Pualani Gold and Platinum

Pualani Gold status kicks in at 20,000 flown miles or 30 segments in a calendar year. Members receive two free checked bags on interisland and transpacific flights, priority check-in, and Zone 2 boarding. Pualani Platinum lifts the threshold to 40,000 miles or 60 segments and adds a third free bag plus Zone 1 boarding.

Barclays Hawaiian Airlines World Elite Mastercard

The Barclays-issued Hawaiian Airlines World Elite Mastercard, launched in its current form in 2018, waives the first checked bag fee for the primary cardholder and up to six companions on the same reservation. The card carries a $99 annual fee. For a family of four flying HNL to OGG twice a year, the card pays for itself on baggage alone within one round trip.

Which fares get which waivers

Southwest’s Interisland Bag Fees (Updated April 2026)

Southwest launched interisland service in April 2019 with HNL–OGG as the debut route, a shift covered in detail by the Honolulu Star-Advertiser business desk at the time. By 2022 the carrier operated on all four major interisland pairs: HNL–OGG, HNL–LIH, HNL–KOA, and OGG–KOA. As of April 9, 2026, Southwest charges $30 for the first checked bag and $40 for the second on interisland routes for non-Hawaii residents. Hawaii residents with a Hawaii mailing address registered in their Rapid Rewards account still receive two free checked bags.

Bag limits and dimensions

Southwest allows two checked bags at 50 pounds and 62 linear inches each, matching the Hawaiian standard. A third bag costs $50. Overweight fees run $75 for 51–100 pounds. Southwest does not accept bags over 100 pounds on interisland routes at all — a stricter cap than Hawaiian’s $200 tier at 100 pounds. Household relocations planning to fly bulky items must weigh accordingly.

Fare-class differences

The 2023 rebrand added Wanna Get Away Plus at $10–$40 over the base Wanna Get Away fare. Neither changes the checked-bag fee. What Wanna Get Away Plus buys is same-day standby, transferable flight credit, and one earned tier point per dollar. On a 40-minute HNL–OGG hop, most travelers stick with the base fare and pocket the difference.

Boarding Groups and Baggage Implications

Baggage strategy on interisland flights is not just about what a traveler pays at the counter — it is also about whether the carry-on makes it onto the plane. Both carriers use different boarding systems, and both cap overhead bin space on the 717 and 737-800 airframes used here.

Hawaiian’s zone system

Hawaiian boards in five zones: Zone 1 (First Class, Pualani Platinum, active military), Zone 2 (Pualani Gold, Extra Comfort), Zones 3–5 (Main Cabin by seat row, back to front). Zone 5 passengers routinely find full overhead bins on the 717, which offers 128 seats and roughly 55 overhead compartments. Gate-checking a roll-aboard becomes the norm on the last-boarding third of the plane.

Southwest’s A/B/C position system

Southwest assigns numbered positions within three groups: A1–A60, B1–B60, C1–C60. Check-in opens exactly 24 hours before departure; positions fill by check-in order. EarlyBird Check-In runs $15–$25 per segment and automates check-in 36 hours out, generally landing a mid-B or better position. Business Select and A-List Preferred members claim A1–A15 automatically.

Why boarding matters for interisland bags

Southwest’s open seating means late boarders take middle seats far from their bags. Hawaiian’s assigned seats fix the seat problem but not the bin problem. On a full HNL–OGG flight, roughly 25 to 35 roll-aboards get gate-checked when overheads fill. Gate-check tags are free on both carriers and bags come out at the destination jet bridge, not baggage claim.

Gate Locations at HNL, OGG, LIH, and KOA

Interisland gate assignments matter for connections, walking time, and — on the outbound leg — how much time a traveler has after clearing agricultural screening at HNL. Both carriers cluster in predictable areas at each airport, but the patterns differ enough that a first-time interisland traveler can miss a connection without planning.

HNL: Terminal 1 versus Terminal 2

Hawaiian Airlines interisland flights depart from HNL Terminal 1, formerly called the Interisland Terminal, at gates 51–60. Southwest operates from HNL Terminal 2, gates C1–C11 in the main concourse. Connecting between the two terminals requires the free Wiki Wiki bus; travelers can review the shuttle route in this interterminal transit walkthrough before their first connection.

OGG (Kahului)

Hawaiian typically uses gates 15–18 on the interisland concourse at OGG, while Southwest gates cluster at 20–24 in the west end. The two carriers do not overlap. Walking time from Southwest gates to the OGG rental car center runs about 12 minutes; from Hawaiian gates the walk is closer to 8 minutes. Day-trippers heading for a Molokini snuba boat save time from the Hawaiian side.

LIH (Lihue)

Lihue is a small airport with just nine gates total. Hawaiian works out of gates 3–5 on the north concourse; Southwest usually operates from gates 6–8. Total concourse walk from either gate cluster to the exit is under 4 minutes. Baggage claim at LIH sits directly across from the exit, no shuttle needed.

KOA (Kona)

Kona International is an open-air airport. Hawaiian uses gates 1–5 in the makai (ocean-side) concourse; Southwest operates from gates 7–10 in the newer mauka concourse added during the 2020–2022 expansion tracked by the Hawaii Department of Transportation. Walking time between the two runs roughly 6 minutes, all outdoors. On a rainy Kona morning the walk with a soft-sided bag becomes a real problem.

Travelers landing at KOA en route to South Kau destinations such as Papakolea Green Sand Beach or upcountry stops like the Volcano Winery tasting flight should budget the extra outdoor walk when connecting between the two carriers.

Gate-Check, Personal Items, and Carry-On Enforcement

Both carriers publish nearly identical carry-on dimensions: 22 x 14 x 9 inches for a roll-aboard and 18.5 x 8.5 x 13.5 inches for a personal item. Enforcement is where the two diverge in practice, and where relocating households can burn cash they did not budget for.

Hawaiian gate checks

Hawaiian’s ramp crews at HNL Terminal 1 gate-check aggressively when the 717 is full. The airline’s own agents will pull oversize roll-aboards from the boarding line and tag them for the belly. There is no fee for a valid-sized bag that gets gate-checked because the overhead ran out. An oversized bag caught at the gate incurs the $30 first-bag fee.

Southwest gate checks

Southwest’s ramp crews are more permissive at HNL Terminal 2, partly because open seating stretches boarding time and the 737-800 has more bin space than the 717 (approximately 175 overhead capacity across 143–175 seats). Voluntary gate-checks are common because C-group passengers with roll-aboards often surrender them at the jet bridge rather than fight for bin space.

Personal items that avoid scrutiny

Neither carrier weighs personal items at interisland gates. A soft-sided duffel that fits under the seat is treated the same as a laptop backpack. Travelers moving between islands frequently pack a compressible duffel as a personal item to carry snorkel gear or a rash guard, then check the main bag on Southwest for free.

Mokulele Airlines and Southern Airways Add-Ons

Beyond Hawaiian and Southwest, two small commuter carriers serve interisland routes that the majors skip or fly less often. Mokulele Airlines and Southern Airways Express both operate Cessna 208 Grand Caravans — nine-seat single-engine turboprops — and now share ownership under Surf Air Mobility since the 2022 merger.

Baggage weight caps

Mokulele’s baggage allowance is aggressive: one personal item under 10 pounds free, one checked bag under 25 pounds for $10, and each additional pound over 25 charged at $1 per pound up to a 50-pound cap. Total combined weight per passenger (body plus baggage) is capped at 350 pounds because of Cessna load balancing.

Southern Airways Express add-ons

Southern Airways applies similar caps and adds $12 for a bike box and $10 for a golf bag. Surfboards are not accepted on either Mokulele or Southern Airways Cessna Caravans — the fuselage is too narrow. Any traveler moving boards between islands must use Hawaiian or Southwest and factor the surfboard fee into the routing.

Where the commuters actually fly

Mokulele and Southern Airways serve the routes the majors abandoned or never flew: Kalaupapa (LUP), Hana (HNM), Kamuela/Waimea (MUE), and Molokai (MKK). A relocation to Molokai typically means the Mokulele Cessna Caravan from Honolulu — a route walked through in the Molokai Hoolehua Airport routing overview.

Real-World Cost Scenarios

Working through concrete scenarios makes the fee split easier to internalize. The table below compares four typical interisland trips at 2026 prices, assuming no status and no co-branded card, using representative base fares from mid-week booking.

The pattern is clear. Hawaiian wins on single travelers with no bags or on surfboard-heavy trips where its lower $35 board fee undercuts Southwest’s $75. Southwest wins overwhelmingly for families, movers, and anyone shipping more than one bag per person on the same ticket.

Interisland Baggage for Movers and Longer Relocations

Bringing household goods across the Kaiwi or Alenuihaha channels is a different problem from vacation luggage. Interisland flight baggage handles clothing, kitchenware, and a bike, but anything larger goes by ocean freight. Matson operates interisland barge service through its Hawaii Interisland Terminal at Honolulu Harbor, and Pasha Hawaii covers roll-on/roll-off cargo on parallel routes.

What still makes sense to fly

Small households moving from Oahu to a Maui rental frequently ship the couch by Young Brothers barge but fly clothing, laptops, and a few boxes as checked bags. As of April 2026, both carriers charge $30 for the first bag and $40 for the second. Hawaii residents on Southwest still check two bags free. Hawaiian would run $280 in bag fees per adult moving four bags each ($30 + $40 + $150 + $150); Southwest charges the same for non-residents, but residents save with the two-free-bag perk. On a two-adult household, that is $440 either kept or paid.

Agricultural inspection at HNL

Every checked bag leaving HNL for the neighbor islands passes through the Hawaii Department of Agriculture inspection point on the ramp side. Prohibited items include coqui frogs, unauthorized soil, and any citrus. The HDOA Plant Quarantine Branch publishes the full list. Inspection failure can pull a bag from the flight entirely.

Which Carrier Fits Which Traveler

The Hawaiian versus Southwest choice comes down to how much baggage a traveler moves, how often, and how much boarding position matters. A single-scenario recommendation misses the point — the honest answer depends on the trip and the household.

Frequent solo commuters

A physical therapist doing consulting work between Oahu and Maui two days a week has no checked bag and flies with a laptop backpack. For that traveler, Hawaiian’s Zone-based boarding and denser schedule (26 daily HNL–OGG flights versus Southwest’s 14) usually wins. Extra Comfort seats on the 717 for $30 add legroom on the 40-minute hop.

Families visiting ohana

A family of four flying HNL–LIH twice a year with two bags each faces $960 in Hawaiian bag fees annually versus $0 on Southwest. Southwest’s schedule at LIH covers all the major daytime windows even if it lacks the every-hour density Hawaiian offers between Honolulu and Kahului. First-timers weighing island stays can review the Waikiki versus Ko Olina lodging tradeoff before booking.

Neighbor-island professionals

Physicians, contractors, and skilled trades often build their business across two or more islands. A contractor pricing out a Kauai remodel might fly LIH weekly with tools. Both carriers charge $50 for a third bag, but only Hawaiian accepts the 71–100 pound tier for $200 — meaning a full toolbox flies only on Hawaiian without shipping ahead.

Surfers and outdoor athletes

A surfer moving between Waikiki and the Hana coast for winter swells benefits from Hawaiian’s $35 surfboard fee versus Southwest’s $75. Add a wetsuit and fins in a carry-on and the total per trip runs $60 on Hawaiian, $75 on Southwest. Details on the Hana route pullouts appear in the Twin Falls roadside etiquette walkthrough.

Day-trippers with windward Oahu destinations

Interisland day-trippers landing at HNL who plan a Windward-side excursion such as the Kualoa Ranch filming-location tour should factor drive time from either terminal. Southwest passengers with only a personal item can clear T2 arrivals in about 8 minutes and reach a rental car faster than Hawaiian passengers waiting on a checked bag at T1.

Booking Timing and Fee Prepayment

Both carriers permit online check-in 24 hours before departure. Fees are the same whether paid online, at kiosk, or at counter — no discount for early payment. Timing still matters because it affects overhead bin access and gate-check exposure on flights that reliably fill.

The 24-hour Southwest scramble

Southwest opens check-in at exactly T–24 hours. A traveler who checks in at T–23:59 typically lands in the A group; T–20:00 hits B; T–4:00 or later ends up in C. EarlyBird Check-In at $15–$25 automates check-in at T–36 hours and reliably delivers a mid-B slot. A-List members (25 flights or 35,000 tier-qualifying points annually) auto-check at T–36 hours.

Hawaiian same-day changes

Hawaiian’s fare rules on interisland allow same-day standby for $25 in Main Cabin. Same-day confirmed changes run $50 in Main Cabin, free in First Class. Both fees apply per segment. For last-minute swaps between a HNL–OGG 10:00 flight and the 11:15 that got quieter after weather cleared, the standby fee is often worth it.

Frequently asked questions

Does the HawaiianMiles Barclays card cover the first bag for the whole family?

Yes, the Barclays Hawaiian Airlines World Elite Mastercard waives the first checked bag fee for the primary cardholder plus up to six companions on the same reservation. That is a savings of up to $175 per one-way trip for a family of seven flying interisland. The $99 annual fee pays back on a single round trip for a family of four.

Are Southwest interisland flights really always two bags free?

Every Southwest interisland fare — Wanna Get Away, Wanna Get Away Plus, Anytime, and Business Select — includes two free checked bags at 50 pounds and 62 linear inches each. A third bag runs $50 and any bag over 100 pounds is refused entirely on interisland routes. The two-bag policy dates to Southwest’s April 2019 interisland launch and has held through every fare-class change since.

What happens to a gate-checked bag on an interisland flight?

Gate-checked bags on Hawaiian’s 717 and Southwest’s 737-800 come out at the destination jet bridge, not baggage claim. Ramp crews tag the bag with a claim stub at the gate and load it into the belly hold. On the 40-minute HNL–OGG flight, gate-checked bags typically appear on the jet bridge within 4 minutes of aircraft parking at the arrival gate.

Can surfboards fly on interisland routes?

Both Hawaiian and Southwest accept surfboards as checked bags on interisland flights. Hawaiian charges $35 for a surfboard bag holding up to two boards; Southwest charges $75 as an oversize checked bag. Neither Mokulele nor Southern Airways Cessna Caravans accept boards because the fuselage is too narrow. Board bags must be under 115 linear inches for both major carriers.

How much time is needed between Southwest and Hawaiian at HNL?

HNL Terminal 1 (Hawaiian) and Terminal 2 (Southwest) are connected by the free Wiki Wiki shuttle. The shuttle runs every 5 minutes and the ride itself takes 3 to 4 minutes. Total connection time including bag drop and security should be budgeted at 90 minutes for interisland-to-interisland transfers between the two carriers, longer on peak morning banks.

Do children get free bags on interisland flights?

No, children are charged full baggage fees on both carriers regardless of age. A child under two flying as a lap infant on Hawaiian pays no fare but any bag the parent checks in the child’s name still costs $25 for the first, $35 for the second. Southwest’s two-free-bags policy applies to every ticketed passenger including children, one of the largest structural advantages for family travel.

What about pets and their carriers on interisland flights?

Hawaiian charges $35 for an in-cabin pet carrier on interisland flights and $60 in the checked hold. Southwest does not accept pets in the cargo hold on interisland routes; only in-cabin pets under 25 pounds combined weight are permitted for a $95 fee. Neither carrier waives pet fees for elite members or credit card holders, and neither counts the pet carrier toward the standard carry-on allowance.