Daniel K. Inouye International Airport
(Honolulu Airport - HNL)
Travelers flying through Daniel K. Inouye International Airport (HNL) have convenient options for mailing letters, sending postcards, or shipping packages while visiting Oʻahu. Although HNL does not have a full-service United States Postal Service (USPS) branch inside the terminals, multiple mail drop points, select postage purchasing locations, and nearby post offices make it easy to access mailing services during your trip.
Whether you're dropping a postcard in the mail before heading home or need full postal support for shipping documents or souvenirs, HNL and the surrounding Honolulu area provide accessible solutions for domestic and international travelers.
The closest and most practical full-service post office for airport travelers is located just minutes from the airport:
USPS – Honolulu Airport Post Office
3600 Aolele St, Honolulu, HI 96820
Located less than 1 mile from HNL — approximately 3 minutes by car / airport shuttle access
Services Offered:
• Priority Mail & Priority Express shipping
• First-Class and international mailing
• Package and parcel acceptance
• Flat-rate boxes and packaging supplies
• P.O. box rentals
• Money orders
• Prepaid package drop-off
This post office is the most convenient option for travelers who need to mail larger items, send time-sensitive packages, or pick up postal supplies.
While HNL does not operate a USPS customer counter inside the terminal, USPS mail drop boxes are located throughout the airport, making it easy to send outgoing mail.
Mail drop boxes at HNL are best suited for:
• Letters
• Postcards
• Prepaid small parcels with postage already attached
Typical mail drop locations include:
• Terminal 1 lobby near check-in counters
• Terminal 2 ticketing area
• Curbside pickup and drop-off zones
✱ Important: There are no mail drop boxes beyond TSA security checkpoints, so plan to mail items before entering security.
Several newsstands, gift shops, and convenience stores inside the terminals offer:
• Postcards
• Stamps
• Pre-stamped envelopes
These are convenient options for travelers who want to send a quick message or souvenir to friends and family. For packaging supplies (boxes, padded mailers, tape), visit the nearby USPS branch or private shipping centers off-airport.
For those needing specialty shipping, international courier handling, or expedited services beyond USPS, Oʻahu offers several nearby locations:
• FedEx Ship Center – Honolulu (Near HNL): Offers Express & Ground shipping, packaging supplies, and document services.
• The UPS Store – Honolulu / Salt Lake: Full packaging and mailing services, printing, and secure drop-off.
• DHL Authorized Shipping Counter – Ala Moana: Best suited for international parcels, customs documentation, and specialty handling.
These options are ideal for business travelers or visitors mailing fragile items, large souvenirs, or goods requiring international courier service.
• Mail before security — There are no USPS drop boxes past TSA.
• Visit USPS for large items — Best solution for parcels, souvenirs, or document shipping.
• Use hotel concierge if staying in Waikīkī — Many Waikīkī hotels will hold or mail packages for guests.
• Pack valuables separately — Always keep passports, electronics, and medication with you.
• Allow transit time — The Airport Post Office is close, but expect lines during peak hours.
Whether you're sending a postcard with a tropical stamp, returning purchases home, or shipping work-related items, Daniel K. Inouye International Airport and the surrounding Honolulu area make postal services accessible and convenient.
Travelers benefit from:
• USPS drop boxes inside the airport
• Stamps and postcards sold in terminal shops
• A full-service USPS location less than 1 mile from HNL
• Additional FedEx / UPS / DHL options for specialty shipping