You bought too much. Your suitcase won't close. Here's the 2026 math on whether to ship via USPS, UPS, or FedEx — versus paying the airline's extra-bag fee — plus two clever pack-more tricks that don't cost a thing extra.
In 2026, every major U.S. airline charges ~$45 for the first checked bag and ~$55 for the second on Hawaii-mainland economy flights. A third bag costs $150 to $200. An overweight bag adds $100 or $200. A USPS Large Flat Rate Box ships up to 70 pounds anywhere in the U.S. for $34.02. The math: ship anything under about 22 pounds; pay the bag fee for 22-50 pounds in a single bag; always ship if you're facing an overweight, third-bag, or buy-a-new-suitcase situation.
You booked a Basic Economy fare to Hawaii because the round-trip was three hundred bucks. You spent a week buying Kona coffee, macadamia-nut chocolate, an ukulele, a slack-key CD or two, an aloha shirt or four, some Maui Brewing IPA you can't get at home, and a few jars of guava jam from the farmers' market. Now your suitcase weighs sixty-two pounds and won't zip.
Welcome to the most expensive part of your trip. Every major U.S. airline that flies to Hawaii raised baggage fees in April 2026 — Delta on the 8th, United on the 3rd, Alaska and Hawaiian on the 10th, Southwest and American on the 9th. The carrier-to-carrier spread is now about five dollars. They're basically the same.
Across United, Delta, Alaska, Hawaiian, Southwest, and American, here's what you'll pay one-way on Hawaii-mainland economy in 2026:
| Bag | Fee (each carrier) |
|---|---|
| 1st checked bag | $45 ($50 at airport for UA/AA) |
| 2nd checked bag | $55 ($60 at airport for UA/AA) |
| 3rd+ checked bag | $150 (Southwest) / $200 (everyone else) |
| Overweight 51-70 lb | +$100 |
| Overweight 71-100 lb | +$200 |
| Oversize (63"+ linear) | +$200 |
Note: Standard bag allowance is 50 lb / 62 linear inches. Elite-status flyers, Hawaii residents on interisland flights, and certain co-brand credit cardholders still get bag waivers. Hawaiian and Alaska are now the same loyalty program (Atmos Rewards) after the September 2024 merger. JetBlue does not fly to Hawaii — that partnership ended in 2025-2026.
Each strategy works in a different scenario. Most savvy travelers stack two or three of them.
This is the headline play. USPS Priority Mail Flat Rate is the same price domestically, whether you're shipping Honolulu to Los Angeles or Phoenix to Boston. There is no Hawaii surcharge. Each flat-rate box accepts up to 70 pounds of contents, and the price doesn't change between one ounce and seventy pounds.
Current 2026 retail prices (post the April 26, 2026 USPS rate adjustment, in effect through January 17, 2027):
| Box | Dimensions | Retail price | Weight cap |
|---|---|---|---|
| Small Flat Rate Box | 8 11/16 × 5 7/16 × 1¾" | $13.66 | 70 lb |
| Medium Flat Rate Box | 11¼ × 8¾ × 6" (top loader) | $24.79 | 70 lb |
| Large Flat Rate Box | 12¼ × 12¼ × 6" | $34.02 | 70 lb |
| APO/FPO/DPO Large Box | same as Large | $32.56 | 70 lb (military discount) |
| Priority Mail Envelope | 12.5 × 9.5" | $12.91 | 70 lb |
Transit time: 2-3 business days to most West Coast destinations, 3-4 days East Coast. Free $100 insurance is included; you can add more at the counter for a few dollars per $100 declared.
The boxes are free. Walk into any post office and take them from the lobby rack — no purchase required. Or order them online at store.usps.com and they ship to your hotel (allow 3-5 business days; do this before you fly to Hawaii).
Where to drop off in Waikiki: The Waikiki Post Office at 330 Saratoga Road is the closest USPS location to most Waikiki hotels. Walking distance from the Halekulani, Royal Hawaiian, Sheraton Waikiki, and Hilton Hawaiian Village. Free parking lot, the largest box inventory of the three Waikiki locations, and open Saturdays until 1:00 PM. The Waikiki Shopping Plaza station and the Kuhio Ave station also accept packages — see our locations directory.
UPS and FedEx are essentially never cheaper than USPS for the tourist shipping souvenirs home from Hawaii. Both carriers treat Hawaii as Zone 7 or Zone 8 from the mainland and apply distance-based pricing — plus an extra-zone surcharge of around $3-$8 per shipment that USPS does not charge.
Rough comparison for a 15-pound box, Honolulu to Los Angeles, ground service:
| Carrier & Service | Approx. cost | Transit |
|---|---|---|
| USPS Large Flat Rate Box (up to 70 lb) | $34.02 | 2-3 business days |
| USPS Ground Advantage | $38-$48 | 5-10 business days |
| UPS Ground (Hawaii Extended Zone) | $55-$80 | 5-10 business days |
| FedEx Ground / Home Delivery | $55-$80 | 5-10 business days |
| UPS or FedEx 2-Day Air | $80-$130 | 2 business days |
When UPS or FedEx is actually the right call:
There is no UPS Store or FedEx Office inside the 96815 ZIP code — both companies serve Waikiki from neighboring neighborhoods. Closest options:
Important note for UPS Store visits: walk-in shipping at any UPS Store uses UPS's “Retail” rate, which sits 20-50% above the “Daily” rate businesses pay. The workaround that saves real money: generate the shipping label online (free account at ups.com, or third-party label tools like Pirate Ship or Shippo), then drop the pre-paid package at the same UPS Store. Drop-offs are free; you skip the in-store markup entirely. Bring your own packing tape.
A 2026 note worth flagging: UPS Ground from Hawaii is not actually ground — no truck crosses the Pacific. UPS air-freights Hawaii-origin parcels but bills and times them at the cheaper Ground rate (5-10 business days). Also, FedEx Express Saver (3-day) is not available to or from Hawaii — your FedEx express options out of Honolulu are 2Day, Standard Overnight, and Priority Overnight only.
This isn't a shipping option — it's a make-your-existing-bag-fit-more option. Compression packing cubes are zippered cubes with two zippers: one closes the cube normally, the second squeezes air out and shrinks the cube's volume by 30 to 60 percent on soft goods.
What compresses well: sweaters, fleece, T-shirts, aloha shirts, beach towels, sarongs, swim trunks, socks, underwear. What doesn't: denim, structured jackets, anything with hard parts.
The strategic play is avoidance: compress your clothes hard enough that everything fits in your existing checked bag, and you don't need to buy a second bag at all. A six-piece compression cube set runs $20-$60 on Amazon — pays for itself in one trip if it saves you a single $55 second-bag fee.
Synergy with USPS: compression cubes also make USPS Flat Rate Boxes much more efficient. A Large Flat Rate Box is $34.02 regardless of how densely you pack it. Cram in two cubes of compressed clothing — say twelve T-shirts and four aloha shirts — and your effective per-shirt shipping cost is roughly $2.
Reference: How compression cubes work (Travel Her Story), Best compression cubes (Pack Hacker).
The pocketed travel jacket is a clever side-step: airlines weigh and count your bags, but they don't weigh you. Wear a jacket loaded with dense, valuable items on the plane and you've effectively added a small carry-on without it counting against any baggage allowance.
The category leader is the SCOTTeVEST Pack Windbreaker, which has 19 hidden pockets, folds into its own back pocket, and is water-resistant. Both men's and women's versions exist. Price: around $149. Pockets are sized for everything from a phone to a paperback to a small camera to a passport-and-wallet combo.
What to put in the jacket:
What NOT to put in: liquids over 3.4 oz (TSA), anything sharp (TSA), anything you wouldn't carry through a metal detector. The jacket goes through the X-ray bin or stays on your body during screening — TSA officers see this jacket constantly and know what it is.
Reference: SCOTTeVEST Pack Windbreaker, Pack Hacker review.
Sometimes the math says “pay the bag fee, move on with your life.” The exact tipping point depends on weight, but here's the rough rule: if you're sending 22-50 pounds and it fits in a single bag under the 50-pound limit, paying the airline's $45-$55 bag fee is usually slightly cheaper than two USPS Flat Rate boxes — and your stuff arrives with you instead of in the mail two to three days later.
The strategy is also more attractive when you have fragile items you want hand-controlled (you can lift your bag gently off the carousel; USPS will toss it eight to twelve times), or items with high replacement value where you'd rather not insure separately.
Don't pay the bag fee when: you'd trigger an overweight surcharge, you'd need a third bag, or you'd need to buy a new suitcase. Those scenarios always lose to shipping.
Per-pound effective cost of each option, calculated at typical pack densities. The cheapest option in each scenario is in bold.
| Option | At typical fill | Per-pound cost |
|---|---|---|
| USPS Small Flat Rate ($13.66) at 4 lb | 4 lb | $3.42 / lb |
| USPS Medium Flat Rate ($24.79) at 15 lb | 15 lb | $1.65 / lb |
| USPS Large Flat Rate ($34.02) at 22 lb | 22 lb | $1.55 / lb |
| USPS Large Flat Rate ($34.02) packed to 35 lb | 35 lb | $0.97 / lb |
| USPS Large Flat Rate ($34.02) packed to 70 lb (max) | 70 lb | $0.49 / lb |
| Airline 2nd bag at $55, packed to 35 lb | 35 lb | $1.57 / lb |
| Airline 2nd bag at $55, max-packed to 50 lb | 50 lb | $1.10 / lb |
| Airline 3rd bag at $200, max-packed to 50 lb | 50 lb | $4.00 / lb |
| If you're paying for… | Ship via USPS when shipping weight is below… |
|---|---|
| 1st or 2nd bag at $45-$55 | ~22-25 lb (one Medium FR Box, or one Large FR Box underfilled) |
| 2nd bag overweight at $145 | ~70 lb (essentially always — overweight is the worst surcharge) |
| 3rd bag at $150-$200 | Always — even shipping three Large Flat Rate boxes ($102) beats a third bag |
| Buying a $50 disposable suitcase + $55 bag fee = $105 | ~65 lb across 2 Large FR Boxes ($68 total) |
| Option | Cost |
|---|---|
| Airline 2nd bag (any major carrier) | $55 |
| 2× USPS Large Flat Rate Boxes | $68.04 |
| 1× Large + 1× Medium | $58.81 |
| 3× Medium Flat Rate | $74.37 |
Verdict: The airline bag wins by about $5-$13, and your stuff arrives with you. This is the scenario where it's tempting to ship but the math doesn't quite get there — unless you stack on compression cubes (pack more into your first bag and skip the second entirely).
| Option | Cost |
|---|---|
| 60 lb bag (one bag, overweight) — bag fee + overweight | $145 |
| 45 lb bag ($45 bag) + ship 15 lb in 1× Medium FR Box ($24.79) | $69.79 |
| 45 lb bag ($45) + ship 15 lb in 1× Large FR Box ($34.02) | $79.02 |
| 45 lb bag ($45) + 15 lb USPS Ground Advantage (~$42) | $87.00 |
Verdict: Splitting an overweight bag saves $65-$75 every time. The +$100 overweight surcharge is the single most expensive line item on the airline's fee schedule. If your bag is going to be heavy, pull 10-15 pounds out at the hotel and ship them separately. This is the most important rule in the entire article.
| Option | Cost |
|---|---|
| 3rd bag, Southwest | $150 |
| 3rd bag, Hawaiian / Alaska / Delta / United / American | $200 |
| Ship 30-50 lb in 2-3 Large FR Boxes | $68-$102 |
| 2× Large FR + 1× Medium | $92.83 |
Verdict: The third-bag fee is punitive ($150-$200). USPS wins by $50-$130, every single time, regardless of carrier. No exceptions. If you find yourself reaching for a third bag, stop and find the nearest post office.
Tempting move: walk into the ABC Store on Kalakaua, buy a cheap medium suitcase for $50, throw your overflow into it, pay the checked-bag fee, done.
| Option | Cost |
|---|---|
| Cheap suitcase (ABC, Ross, TJ Maxx, Walmart Waikiki) | $40-$70 |
| + Checked bag fee (1st or 2nd) | $45-$55 |
| Total: new bag + fee | $85-$125 |
| Ship contents in 2× Large Flat Rate Boxes | $68.04 |
| Ship contents in 3× Large Flat Rate Boxes (heavy load) | $102.06 |
Verdict: USPS beats the buy-a-suitcase math by $17-$57, and you don't have to lug a second bag through the rental-car return, the parking shuttle, and the cab home. If you genuinely want a new suitcase as a souvenir of the trip, fine — but don't use it as your shipping solution.
The main Saratoga Road post office has the most Flat Rate boxes available, the longest hours, and free parking. Walk in with the box, hand it over, pay the postage, done.
Get directions to the main post office →It depends on weight. Under about 22 pounds, USPS Priority Mail Flat Rate wins. Between 22 and 50 pounds in a single bag, the airline's first or second bag fee ($45-$55 in 2026) is usually cheaper than two flat-rate boxes. The moment you trigger an overweight surcharge, need a third bag, or are considering buying a new suitcase, USPS wins decisively — often by $50-$130.
On all six major U.S. carriers serving Hawaii in 2026 (United, Delta, Alaska, Hawaiian, Southwest, American), standard economy fees are approximately $45 for the first checked bag, $55 for the second, $150 (Southwest) or $200 (everyone else) for a third, plus +$100 overweight for bags 51-70 pounds and +$200 for 71-100 pounds. Prices are nearly identical across all six airlines after the April 2026 industry-wide hikes.
USPS Priority Mail Flat Rate is the same price domestically: Small $13.66, Medium $24.79, Large $34.02 (rates effective April 26, 2026 through January 17, 2027). Each box holds up to 70 pounds. There is no Hawaii surcharge. USPS Ground Advantage runs $28-$130 depending on weight, with 5-10 business day transit. Priority Mail Express starts around $42 for 1-2 day delivery.
No. Southwest ended its decades-old “Two Bags Fly Free” policy on May 28, 2025. As of 2026, Southwest charges $45 for the first checked bag and $55 for the second on Hawaii-mainland flights — the same as Delta, United, Alaska, Hawaiian, and American. Free bags now only apply to A-List Preferred and Choice Extra fares, Rapid Rewards co-brand cardholders, and Hawaii residents on interisland flights.
No. JetBlue does not operate flights to Hawaii in 2026. The JetBlue-Hawaiian Airlines loyalty partnership wound down in 2025-2026 — last bookable September 30, 2025, with completed travel by March 31, 2026.
Yes. They reduce the volume of soft goods (clothing, towels, sweaters) by 30 to 60 percent. The strategic win is avoiding the extra bag fee entirely — pack more into your existing checked bag. They also pair well with USPS Large Flat Rate boxes, where the price stays $34.02 regardless of how densely you pack. A six-piece cube set is $20-$60 on Amazon and pays for itself in one trip.
The SCOTTeVEST Pack Windbreaker has 19 hidden pockets, folds into its own back pocket, and is water-resistant. Around $149. The jacket holds dense items like cameras, e-readers, jars, books, and electronics — effectively a wearable extra bag that doesn't count against your baggage allowance. TSA sees these jackets constantly and knows what they are. Best for valuables and small dense items, not for bulky clothing (that goes in compression cubes).
Almost never for a tourist. UPS and FedEx treat Hawaii as Zone 7 or Zone 8 from the mainland and add distance-based pricing plus a Hawaii extended-zone surcharge ($3-$8). A 15-pound box from Honolulu to Los Angeles via UPS Ground runs $55-$80, versus $34.02 in a USPS Large Flat Rate Box. UPS and FedEx are competitive only for oversized items (surfboards), alcohol shipments (USPS cannot ship alcohol), or time-critical overnight needs.
The Waikiki Post Office at 330 Saratoga Road is the closest USPS location to most Waikiki hotels — walking distance from the Halekulani, Royal Hawaiian, Sheraton Waikiki, and Hilton Hawaiian Village. Hours: Mon-Fri 9:00 AM – 4:30 PM, Sat 9:00 AM – 1:00 PM. Free parking lot. The Ala Moana Center USPS counter is another option about a mile from Waikiki. Many hotel concierge desks will also accept pre-paid USPS Priority labels for pickup — ask before assuming.
USPS Priority Mail takes 2-3 business days from Honolulu to most West Coast destinations and 3-4 days East Coast. USPS Ground Advantage takes 5-10 business days (Hawaii-origin packages over 15.99 ounces move by ocean freight, adding transit time). Priority Mail Express is 1-2 business days to most major markets. Holiday season can add 1-2 days.
Yes. All Priority Mail Flat Rate boxes and envelopes are free at any post office — walk in and take what you need from the lobby rack. You can also order them in bulk at store.usps.com and have them shipped free to your hotel (allow 3-5 business days; do this before you fly to Hawaii if possible). ABC Stores in Waikiki sell packing tape, bubble wrap, and Sharpies if you didn't bring them.
70 pounds. Every flat-rate container — Small Box, Medium Box, Large Box, all envelopes — caps at 70 lb. The price doesn't change between one ounce and seventy pounds. A Large Flat Rate Box maxed at 70 lb costs $34.02 — that's $0.49 per pound, the cheapest per-pound transit available domestically. Practical reality: 70 pounds of stuff rarely fits in a 12¼ × 12¼ × 6" Large box. Books, jars, and dense food items are the only categories that consistently max it out.
Everything you can mail (coconut, potato, pineapple, ukulele, fresh ahi) and everything you can't (lava rock, sand, fresh fruit, citrus). Source-cited.
Read the full guide →Hawaii's most iconic souvenir. No box, no envelope — just write the address on the husk. USPS Fact #1057.
How to do it →330 Saratoga Road. Full-service, free parking lot, best Flat Rate box inventory of the three Waikiki locations.
Hours & directions →All baggage fees and shipping rates verified against published 2026 sources. Rates change frequently — verify before you book or ship.
Last updated: May 20, 2026 · Rates reflect April 2026 airline hikes and the USPS rate change effective April 26, 2026 through January 17, 2027.