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MCAS Iwakuni, Japan

Iwakuni Kintaikyo Airport, Japan
Space-Available flights from MCAS Iwakuni, Japan — the only Marine-operated AMC passenger terminal in the world, connecting air stations across Japan and Korea with a weekly Patriot Express to Seattle.
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Space-Available flights from MCAS Iwakuni, Japan — the only Marine-operated AMC passenger terminal in the world, connecting air stations across Japan and Korea with a weekly Patriot Express to Seattle.

Marine Corps Air Station Iwakuni, on the Seto Inland Sea in southwestern Japan, runs the only Marine-operated AMC passenger terminal in the world. Established in 2011, its terminal connects Marine and Navy air stations across Japan and Korea, with a weekly Patriot Express to the U.S. West Coast.

For a Space-A traveler, Iwakuni is a high-frequency, small-aircraft terminal. It flies often — frequent hops to Futenma, Kadena, Yokota, and the Korea bases — but the aircraft are small, and most flights release only a handful of Space-A seats. Fill is low, so competition is light; the real constraint is how few seats each flight carries, not how many travelers are waiting for them.

The move at Iwakuni: take a regional hop if one moves you the right direction, but plan around seat counts rather than the flight count, and stay flexible. For the trip stateside, the Saturday Patriot Express to Seattle is the only mainland run — sign up early. And handle the Japan paperwork ahead of time: you need a Tourist passport, and non-SOFA travelers cannot clear customs into Japan here.

Terminal Information

IATA / ICAO
IWK / RJOI
Address
MCAS Iwakuni Passenger Terminal
Bldg. 727, Marine Corps Air Station Iwakuni
Iwakuni, Japan 96310
Hours
Monday–Friday 7 am – 5 pm, Saturday 7 am – 2 pm. Sunday, federal holidays, and evening or group arrivals and departures require prior coordination.
Commercial
0827-79-5509 / 5507 / 5262 (from Japan) / 011-81-827-79-5509 (from the U.S., drop the leading 0 of the area code) / DSN 315-253-5509 — Passenger Service Counter.

Flight Schedule PDFs

AMC's official scheduling PDFs, opened in a new tab.

What the data shows

At a Glance

Editorial summary of the live numbers below.

  • Iwakuni is the only Marine-operated AMC terminal in the world, and it is a busy intra-theater hub — it runs frequent flights connecting Marine and Navy air stations across Japan and Korea, plus a weekly Patriot Express to Seattle.
  • The aircraft are small. Iwakuni flies often, but most flights release only a handful of Space-A seats — plan around how many seats a flight carries, not around the raw flight count.
  • Fill is low, so competition for the seats that exist is light. If a flight is headed your way with seats released, getting on usually isn't the hard part — the constraint is the small seat count on each flight.
  • The Saturday Patriot Express to Seattle is the only run to the U.S. mainland — the largest aircraft on Iwakuni's schedule and the most contested. Saturday is the terminal's busiest day; sign up early for this one.
  • Cat VI reach is moderate — Category VI travelers reach the manifest on roughly half of categorized flights. On small aircraft a lower-priority traveler can't count on a seat, so flexibility matters more here than at a big-aircraft terminal.
  • April 2026 saw an unusually high spike in flight volume across many AMC terminals — probably driven by real-world operations rather than typical cadence. Weight the other months more heavily when planning your trip.
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Legend— Code column valuesFFirmTTentativeTBDTo Be DeterminedDODuty OnlyOFOrganic FlightSOSOFA OnlyCCRCountry Clearance RequiredPEPatriot ExpressPRPassport RequiredRRefueling Mission
TypeDateDepartureDestinationRoll callArrivalCodeReleasedClaimedFill %Sel catSel signupCompComp cat
Arrival2026-05-22MCAS Iwakuni, JapanKadena AB, Japan1945-2045PE
72-Hour2026-06-05Yokota AB, JapanMCAS Iwakuni, Japan1315T; PE20
72-Hour2026-06-04Seattle-Tacoma IAP, WAMCAS Iwakuni, Japan0430T0
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Premium

Patterns Over the Past 12 Months

See the past 12 months of patterns at this terminal — busiest months, day-of-week cadence, fill rates, and top destinations.

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Before travel day

How to Sign Up

Methods, contacts, and terminal-specific quirks.

Skip the emails. Plan a trip on Space-A+ and we'll submit your sign-up at this terminal automatically — and refresh it every 60 days so it never expires.

Plan Your Trip
Sign-up methods
Email · Online sign-up form
Confirmation
Print a copy of your sign-up email and bring it with you for roll call.

Quirks Worth Flagging

  • Military personnel must be on leave or pass/special-liberty status, and eligible DoW civilians on leave status, to sign up for Space-A. Contractors are not eligible for Space-A travel.
  • Iwakuni provides a Space-A eligibility packet — pick the paperwork that matches your category, then submit the forms to the terminal for verification before you are added to the Iwakuni Space-A registry. Do not alter the wording of these documents, or the forms will be kicked back. If you sign up electronically, call or email the terminal to confirm you are registered.
  • You must hold a Tourist (blue) passport. The no-fee Official passport is not authorized for Space-A leisure travel, per the Foreign Clearance Guide.
  • Non-SOFA travelers — retirees, Japanese or diplomatic passport holders, and DoW civilians or dependents not stationed in Japan — cannot clear customs into Japan at MCAS Iwakuni. They must enter through an authorized port of entry: Haneda, Yokota (on the Patriot Express), Kadena, or another terminal listed in the Foreign Clearance Guide. This matters if Iwakuni is your destination.
  • Roll call is conducted no earlier than 2 hours 20 minutes before departure. Early baggage check-in for booked Patriot Express passengers runs 2:30 pm to 4:30 pm the day before departure; pets cannot be checked in early.
  • The terminal is card-only — cash is not accepted. Pets are not authorized on Space-A flights. Baggage is 2 checked bags per traveler (up to 70 lbs and 62 linear inches each), plus 1 carry-on bag and 1 personal item that fits under an aircraft seat.
Travel day

When You Show Up

Parking, lodging, food, and what to do if you don't get on.

Parking

Parking is in the garage across the street from the terminal — the ground floor is short-term, the upper floors long-term.

Check-In

Check in at the MCAS Iwakuni Passenger Terminal, Bldg. 727. Bring a valid ID, your Tourist passport, your leave or travel orders, and a printed copy of your Space-A sign-up email. Terminal doors open no earlier than six hours before departure.

When to Arrive

The terminal is open Monday–Friday 7 am to 5 pm and Saturday 7 am to 2 pm; Sunday, holidays, and off-hours arrivals or departures need prior coordination. The 24-hour flight recording is currently unavailable, so confirm times against the 72-hour schedule or with the terminal directly. Mark present as early as you can — roll call runs no earlier than 2 hours 20 minutes before departure. The terminal's main floor has drink vending (limited during a machine swap-out), a DV lounge, and free WiFi; the second floor has a kids' play area, business lounge, movie and game rooms, and the USO.

USO
USO Iwakuni is on the 2nd floor of the passenger terminal, Bldg. 727 — a large lounge with sofas and cafe-style tables, eight CAC-enabled computers, a game room with current consoles, and a theater room with individual theater seats, plus free WiFi. Open Monday–Friday 8 am to 6 pm and Saturday 8 am to 2 pm, closed Sunday.
Where it goes

Common Destinations

Editorial notes to complement the live counts on the flight tables above.

  • MCAS Futenma, Japan
    Iwakuni's most frequent run — a hop southwest to the Marine air station on Okinawa, on small aircraft that release few Space-A seats and fill lightly.
  • A regular run to Okinawa and one of the busier terminals in the Pacific — a useful connection point for onward travel around the theater.
  • A regular run to the Tokyo area — the busiest AMC passenger hub in Japan, with a far deeper schedule than Iwakuni's small-aircraft runs.
  • The weekly Saturday Patriot Express — Iwakuni's only run to the U.S. mainland, on its largest aircraft. The most contested flight on the schedule; sign up early.
  • A regular run across to Korea — small aircraft, but a direct link into the peninsula when one flies your way.
  • An occasional hop to the Navy air facility near Tokyo — infrequent, but another connection toward the Kanto region.
If you need an alternate terminal

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Questions we hear

FAQ

Travelers ask these about this terminal specifically.

I know flights are based on mission requirements. Is there anything I can do to increase my chances of making the flight?

Sign up early, and show up early to mark present. If only a few Space-A passengers have marked present shortly before roll call, terminal staff will tell mission planners that cargo can be added to the pallet positions that would have held seats. On certain aircraft, that means fewer Space-A seats than there are travelers waiting. The fix is to mark present as early as you can — don't wait until just before roll call.

Do I really need to bring a copy of my sign-up email?

Yes — always bring a hard copy of your sign-up email, and make sure it shows a date and time stamp. Terminal staff use that stamp to confirm your priority on the manifest at roll call.

Will they let me on the flight if my ID is expired?

No. Check every ID before you travel, and if any will expire during your trip, renew them now. Expired IDs (including your CAC, dependent ID, and passport) will keep you off the flight.

References

Helpful Links

AMC PDFs, terminal-specific guides, and external resources.

Guide last reviewed . Sources: AMC Travel and Space-A+ historical data.