Hawaii Interisland Flights: Airlines, Fares, Bags, and Timing

Interisland flights are how Hawaii moves. A household living on Oahu with family on Maui, a contractor billing hours on Kauai, or a newcomer still choosing an island will book short hops again and again. Most last under an hour in the air, and the price swings more than the flight time does. The cheapest fare and the dearest one on the same route can be $150 or more apart.

The market has changed a lot since 2024. Alaska Airlines now owns Hawaiian Airlines, Southwest has cut back the interisland network it built after 2019, and small-plane carrier Mokulele still serves the airports the jets skip. Bag rules have changed too. “Southwest is always cheaper because bags fly free” is no longer reliably true.

This article covers who flies where, what a one-way ticket typically costs, how long each route takes, what checked bags add, how early to get to each major airport, and why a ferry is not an option between most islands. It ends with the logistics of handing back one rental car and picking up another on a different island.

Which airlines fly between the Hawaiian islands in 2026

Three kinds of operator carry interisland passengers. One is the Hawaiian Airlines jet network, now run within the Alaska Air Group. Another is Southwest Airlines, on a smaller schedule than at its peak. The third is a commuter tier led by Mokulele Airlines, which flies nine-seat turboprops to small airports. Charter and air-tour operators fill niche gaps, but they rarely make sense for routine travel.

Hawaiian Airlines, now part of Alaska Air Group

Alaska Air Group closed its purchase of Hawaiian in September 2024. The two airlines moved to a single operating certificate in late 2025. The Hawaiian brand, livery and Boeing 717 interisland fleet remain, and the 717 still does most of the work on the main routes. Each 717 seats 128 passengers.

Loyalty has merged as well. HawaiianMiles and Alaska’s Mileage Plan combined into Atmos Rewards in 2025, so interisland segments now earn into the same account as mainland flights. Hawaiian still runs the most interisland departures, with the heaviest frequency on Honolulu–Kahului, Honolulu–Lihue and Honolulu–Kona.

Southwest Airlines

Southwest started interisland service in 2019 and briefly flew every major neighbor-island pair. Since 2024 it has cut that schedule repeatedly. Coverage of the cuts in the Honolulu Star-Advertiser and Civil Beat describes a network now concentrated on Honolulu routes, with fewer daily frequencies and some neighbor-to-neighbor pairs dropped or seasonal.

Two other changes matter for interisland buyers. In May 2025 Southwest ended its blanket two-free-bags policy, and in January 2026 it moved to assigned seating. Southwest remains a useful price check on Honolulu routes. Travelers should confirm that it actually flies their route on their dates before planning around it.

Mokulele Airlines and the small-plane tier

Mokulele Airlines flies Cessna 208 Grand Caravans, single-engine turboprops with about nine passenger seats. It belongs to Surf Air Mobility, which also took on Southern Airways Express’s former Hawaii routes. Mokulele serves Molokai (MKK), Lanai (LNY), Kalaupapa (LUP), Kapalua (JHM), Hana (HNM) and Waimea-Kohala (MUE), alongside connections at Honolulu, Kahului and Kona.

For Molokai residents and visitors, Mokulele is the main scheduled air link. The Molokai Hoolehua airport and Mokulele schedule breakdown covers that route in more depth. Expect weight-based seat assignment, low-altitude flying, and more weather cancellations than on the jets.

Interisland routes, distances and flight times

Interisland distances are short by mainland standards. Honolulu to Kahului is about 100 miles, roughly the distance from Los Angeles to Palm Springs. Most of the scheduled block time goes on taxiing, climbing and descending rather than cruising. That is why a 100-mile hop and a 163-mile hop are only about 10 minutes apart on the timetable.

The table below lists approximate scheduled gate-to-gate times. Time in the air is usually 10 to 15 minutes shorter. For mainland legs, the separate breakdown of nonstop flight times from US cities to Hawaii covers the transpacific portion of a trip.

Nonstop versus connecting through Honolulu

Honolulu is the hub. Most neighbor-to-neighbor trips, especially Kauai to the Big Island or Kauai to Maui, connect at HNL. A connection turns a 50-minute trip into a 2.5- to 3.5-hour journey. Kahului–Kona and Kahului–Hilo are the main neighbor-island pairs with regular nonstops, and their frequencies are a fraction of the Honolulu routes.

Typical one-way fares and what moves them

Interisland fares are priced like commuter fares. Demand peaks on Friday afternoons and Sunday evenings, and around holidays when families travel to see relatives. Fares on a given route can run anywhere from a sale price of about $49 to a walk-up price above $250. Prices listed are approximate one-way economy fares before bag fees.

Seasonal and weekly patterns

The busiest stretches are mid-June through mid-August, the two weeks around Christmas and New Year’s, spring break in March, and Thanksgiving week. Late April through May and September through early November are usually the cheapest. Within a week, Tuesday and Wednesday departures often price 15 to 25 percent below Friday and Sunday flights.

Seasonal demand on the neighbor islands also follows tourism. The breakdown of the best time to visit each Hawaiian island shows how Maui and Kauai winter peaks push interisland fares up from December through March, when mainland visitors stack Oahu stops onto neighbor-island trips.

Resident pricing and loyalty

Hawaii residents have historically been offered kamaaina perks, including discounted fares and bag benefits through airline resident programs. Program names and terms have changed with the Alaska–Hawaiian merger. Newcomers should register once they hold a Hawaii driver’s license or state ID. For frequent flyers, co-branded credit cards that waive the first checked bag often pay for themselves within one or two family round trips.

Checked bags and carry-on rules on interisland flights

Bag fees often decide which carrier is cheapest. A $79 fare plus two bags can cost more than a $99 fare with a waiver. The site’s dedicated interisland baggage fee breakdown goes line by line. The summary below shows the general structure in 2026. Fees change often, so check them at booking.

Hawaiian and Alaska waivers

Hawaiian’s interisland fees are lower than its transpacific fees. They are waived for first-class passengers, elite Atmos Rewards members, active-duty military and eligible co-branded cardholders. Overweight bags of 51 to 70 pounds draw a surcharge on top of the base fee. Bags heavier than that are charged at a much higher rate or must go as cargo.

Southwest after the free-bag era

Southwest’s May 2025 change ended the “two bags fly free” rule for most fares. Waivers now go to A-List Preferred members, higher fare bundles and some Rapid Rewards credit card holders. A family of four with one bag each could pay about $140 each way that would once have been free. That is a big shift for households that switched carriers just to avoid bag fees.

Mokulele weight rules

On a nine-seat Caravan, weight and balance govern everything. Mokulele asks passengers for body weight at booking or check-in and caps baggage weight per person. Bulky items such as surfboards generally cannot fit in the cabin or the belly pod. Anything large should travel on a jet carrier or go by interisland freight.

Surfboards, bikes, coolers and moving boxes

Both jet carriers accept surfboards, bikes and sealed coolers as checked items, though oversize charges usually apply. Board bags generally must be under about 115 linear inches. Moving boxes count as ordinary checked bags if they meet the 50-pound and 62-inch limits. Many relocating households tape boxes to exactly those limits and fly clothing and kitchenware rather than barging them.

How early to arrive at HNL, OGG, KOA and LIH

Interisland flights board and close fast. Bag-drop counters commonly close 30 to 45 minutes before departure, and boarding doors close about 10 to 15 minutes before. The 717 turns around at the gate in as little as 30 to 40 minutes, so a late passenger is unlikely to get a gate hold. The table shows practical arrival targets for each airport.

Honolulu (HNL)

HNL handles both interisland and mainland departures, so its security checkpoints back up when the morning mainland bank and the commuter interisland bank overlap. Travelers switching between terminals or carriers can use the free airside and landside shuttle described in the Wiki Wiki interterminal shuttle route layout. The Hawaii Department of Transportation airports division operates all of the state’s public airports.

Kahului (OGG)

Kahului is busy because it also handles heavy mainland traffic. The consolidated rental car facility is reached by an electric tram, which adds 10 to 15 minutes to drop-off. Mid-morning lines at TSA can run 20 to 30 minutes during summer and the December holidays.

Kona (KOA)

Kona’s terminal is open-air, with low-rise buildings and outdoor walkways between gates. Screening is usually quicker than at HNL or OGG. Rental returns sit across the road, and shuttles run every few minutes. Midday rain is uncommon on the Kona side, but strong sun and heat at the outdoor gates are routine.

Lihue (LIH)

Lihue is compact, with short walking distances. Its main bottleneck is rental return, since most agencies use off-terminal lots linked by shuttle buses. A 75-minute target leaves enough room for a 10- to 15-minute shuttle ride and a security line that grows when several mainland flights depart at once.

Agricultural rules between islands

The USDA pre-departure inspection applies to mainland-bound flights, not interisland ones. Interisland passengers still face state rules on moving certain plants, soil and pests between islands. The Hawaii Department of Agriculture Plant Quarantine Branch publishes the restricted list. Households moving potted plants between islands should check it before packing.

Why there is no ferry between most islands

Newcomers often expect a ferry network like Puget Sound’s or the Greek islands’. Hawaii has almost none. The only scheduled passenger ferry links Maui and Lanai, a crossing of about 9 miles from Maui’s south shore to Manele Harbor that takes about 60 to 75 minutes. Nothing scheduled connects Oahu, Maui, Kauai or the Big Island by sea.

The Hawaii Superferry, 2007 to 2009

The Hawaii Superferry began high-speed car and passenger service between Honolulu, Kahului and Nawiliwili in 2007. Protests on Kauai, litigation over environmental review, and a 2009 Hawaii Supreme Court ruling against the law that had let it operate ended the service in March 2009. Its vessels were sold. Proposals for a state-backed revival keep coming up at the Legislature, but none has turned into a schedule.

The channels and the economics

The channels are open ocean. The Kaiwi Channel between Oahu and Molokai and the Alenuihaha Channel between Maui and the Big Island regularly see 8- to 12-foot seas in trade-wind conditions, and higher swells in winter. A 100-mile crossing at 30 knots takes over 3 hours. A jet does it in 40 minutes for a similar fare.

What moves by sea instead

Freight still moves by water. Young Brothers runs regulated interisland barge service for vehicles, pallets and household goods. On the mainland-to-Hawaii side, Matson and Pasha Hawaii carry containers and roll-on/roll-off vehicles. The total cost of moving to Hawaii breakdown explains how those shipping lines fit into a full relocation budget.

Returning one rental car and picking up another

Rental cars cannot fly with their drivers, and one-way rentals between islands are not offered. A traveler moving from Oahu to Maui returns one car at HNL and rents a second at OGG. These are two separate contracts, often with two different companies, at two different rates. Daily rates vary widely by island and season.

The site’s Hawaii rental car prices by island and airport article covers that range in detail. A compact car commonly runs $55 to $90 per day off-peak and $100 to $160 in July or late December. Taxes and airport concession fees add roughly 20 to 30 percent to the base rate.

Step-by-step car swap timeline

1. Book the second rental when booking the flight; neighbor-island fleets sell out first.
2. Set the second pickup 60–90 minutes after scheduled landing.
3. Refuel within 10 miles of the departure airport to avoid refueling charges.
4. Arrive at the rental return 2 hours before departure if checking bags at HNL or OGG.
5. Photograph the odometer, fuel gauge and all four sides at return.
6. Keep the return receipt until the final charge posts.

Fuel and fees to plan for

Hawaii gasoline consistently costs more than the US average. EIA retail gasoline data for West Coast and Hawaii markets has often put prices above $4.50 per gallon. Agencies that refuel a car commonly charge $8 to $10 per gallon or a flat fee. On a 15-gallon tank, that mistake can cost $60 to $90 more than filling up nearby.

Is a car needed on every island?

On Oahu, households living in urban Honolulu can sometimes manage without a car, while the full Oahu loop drive shows how quickly rural areas require one. On Maui, the Big Island and Kauai, a car is effectively required. On Molokai and Lanai, rental fleets are tiny and should be reserved several weeks ahead.

Booking strategy for residents and relocating households

Frequent interisland travel is a real budget line for many Hawaii households. A family on Oahu visiting relatives on the Big Island four times a year can spend $1,600 to $2,400 a year on fares and bags. The Oahu versus neighbor islands comparison is useful for anyone weighing where to live against where they will need to travel.

Practical booking rules

• Price fare plus bags for each traveler, not the headline fare.
• Book 2–4 weeks ahead for ordinary trips, 8+ weeks for holidays.
• Prefer Tuesday, Wednesday or Saturday departures when flexible.
• First-wave morning flights are the least likely to be delayed.
• Leave at least 90 minutes when self-connecting between separate tickets at HNL.
• Compare co-branded card annual fees against annual bag spending.

Day trips versus overnights

Many Oahu residents fly to a neighbor island and back in a day for medical appointments, business meetings or family events. A 6:00 a.m. departure and an 8:00 p.m. return give about 11 to 12 hours on the ground. Add $70 to $120 for a one-day car and a round-trip fare of about $160 to $260, and a day trip still costs well under an overnight stay.

Weather, delays and irregular operations

Interisland jets run with high reliability under normal trade winds. Kona low storms from November through March, tropical systems from June through November, and volcanic haze (vog) near the Big Island can still disrupt the schedule. Mokulele’s single-engine Caravans fly under visual and instrument rules and are more sensitive to low ceilings at small airports such as Kapalua and Hana.

When flights cancel

Because the jets cycle between the islands all day, one disruption in the morning can ripple through the evening schedule. Rebooking onto a later flight is usually quick on high-frequency routes like HNL–OGG, which can see more than 20 Hawaiian departures a day. Low-frequency routes such as OGG–LIH or Mokulele’s Hana service may push travelers to the next day.

Visitors fitting interisland legs around fixed reservations, such as a timed Pearl Harbor visit, should not book an interisland arrival less than 3 to 4 hours before the reservation. Travelers returning to the mainland should leave a similar buffer between an interisland arrival and a transpacific departure on separate tickets. General visitor guidance is published through GoHawaii.

Frequently asked questions

How much do interisland flights in Hawaii cost?

Most one-way economy fares on the main jet routes run from about $79 to $149 when booked two to four weeks ahead. Sale fares can drop to around $49, while last-minute or holiday fares often pass $200. Checked-bag fees of roughly $25 to $45 per bag can raise the total cost noticeably.

Does Southwest still fly between the Hawaiian islands?

Southwest still runs interisland flights, but on a much smaller schedule than at its 2022 peak, mostly on routes touching Honolulu. It ended its universal free-bag policy in May 2025 and adopted assigned seating in January 2026. Travelers should confirm current routes and dates directly before planning around it.

How long is the flight from Honolulu to Maui?

Honolulu to Kahului is about 100 miles and is scheduled at roughly 35 to 45 minutes gate to gate. Actual time in the air is often closer to 25 or 30 minutes. With check-in, security, boarding and baggage claim, door-to-door travel usually takes 2.5 to 3 hours.

Can a rental car be dropped off on a different island?

No. Rental cars cannot be dropped off on another island, and no major agency offers interisland one-way rentals. Travelers return the first car at their departure airport and pick up a separate rental at their arrival airport. Booking both early, especially on Maui and Kauai, avoids sold-out fleets and peak-day pricing.

Is there a ferry from Oahu to Maui or the Big Island?

No scheduled passenger ferry connects Oahu with Maui, Kauai or the Big Island. The Hawaii Superferry stopped in March 2009 after legal challenges. The only regular passenger ferry runs between Maui and Lanai. Vehicles and household goods move between islands on Young Brothers barges instead.

How early should travelers arrive for an interisland flight at HNL?

About 90 minutes before departure is a sensible target at Honolulu when checking a bag, or 60 to 75 minutes with carry-on only. Bag-drop counters often close 30 to 45 minutes before departure. The busiest checkpoint periods are early morning and late afternoon.

Which airline flies to Molokai and Lanai?

Mokulele Airlines provides scheduled service to Molokai and Lanai using nine-seat Cessna Grand Caravans, mainly from Honolulu and Kahului. Fares typically run about $70 to $180 one-way. Passengers should expect weight-based seating, tight baggage limits, and a higher chance of weather-related delays than on jet routes.