Direct advice: Avoid sending belongings inside plain cardboard containers; select a rigid case made of polycarbonate, ABS or plywood certified by the carrier. Most international airlines set maximum linear dimensions at 62 inches (158 cm) and standard weight limits at 23 kg (50 lb) in economy and 32 kg (70 lb) in higher classes. Overweight or oversized pieces incur surcharges that vary by carrier and route–verify exact allowances on the airline website prior to departure.
Packing recommendations: Reinforce seams with high-grade packing tape and strengthen corners with plastic or foam edging. Provide at least 5 cm (2 in) of cushioning around fragile items, place electronics centrally and immobilize small parts to prevent shifting. Remove old travel tags, attach a clear external identity label with phone number and address, and include an internal inventory sheet sealed inside the case.
Security notes: Lock with a TSA-recognized mechanism when traveling to, from or via the United States; carriers may cut non-approved locks during inspections. Spare lithium batteries must remain in cabin baggage only; loose cells placed in stowed cargo are typically prohibited. Do not pack flammable aerosols, unprotected compressed gas cylinders or wet batteries in stowed items without prior airline approval; declare battery-powered equipment at the check-in desk.
Liability and alternatives: International air carriage often falls under the Montreal Convention, which caps damage liability at roughly 1,288 SDR (approximately USD 1,800). Declare high-value goods and purchase additional insurance or ship via a freight courier with tracked door-to-door service and explicit declared-value coverage when higher protection is required. When a rigid case is impractical, courier shipping frequently offers better claims handling and higher insured limits than standard airline acceptance.
Quick checklist: 1) Verify carrier size and weight allowances on the airline website. 2) Reinforce case and pad fragile contents. 3) Photograph contents and exterior labels at drop-off to document condition. 4) Secure with a TSA-approved lock when applicable. 5) Keep spare lithium cells and irreplaceable items in hand-carried baggage with receipts and serial numbers recorded.
Cardboard containers in the aircraft hold: short answer
Yes – a sturdily constructed corrugated container or wooden crate is typically accepted as hold baggage when it meets an airline’s size, weight and packing requirements.
Common dimensional limit: 62 linear inches / 158 cm (length + width + height). Typical free weight allowance: 23 kg (50 lb) in economy; 32 kg (70 lb) often allowed in higher classes or via paid extras. Oversize or overweight items trigger additional charges or require cargo handling.
Packaging specs: double-wall corrugated or kiln‑dried timber; seams taped with minimum 50 mm (2 in) water‑resistant tape overlapped by at least 75 mm; reinforced corners using angled protectors; interior voids filled with bubble wrap, foam, or kraft paper to prevent movement; small, rigid inner cases recommended around fragile items.
Security and screening: attach a durable external ID tag with full name, phone and email plus a duplicate ID inside. Secure closure using a TSA‑approved lock on U.S. itineraries or tamper‑evident cable ties on other routes. Expect customs or security personnel to open packaging during inspection; design packaging to remain intact and organized after resealing.
Restricted items: spare lithium batteries generally must travel in the cabin with terminals insulated; flammable liquids, compressed gases and wet batteries are prohibited in the hold. Declare antiques, high‑value electronics and perishables in advance; airlines may refuse fragile or improperly presented freight.
Claims and cross‑border transport: photograph contents and packaging at drop‑off, retain receipts and serial numbers. Purchase declared‑value protection at the airline desk or obtain private transit insurance when declared compensation exceeds carrier liability (commonly about $20/kg). Wooden crates crossing borders must meet ISPM‑15 phytosanitary marking to clear customs.
Which airlines accept corrugated cartons and shipping containers as hold items?
Recommendation: Major carriers generally permit corrugated cartons in the aircraft hold when packaging meets published size and weight limits; verify the exact policy with the airline 48–72 hours prior to departure.
United States carriers: Delta, United, American and Southwest treat corrugated cartons the same as standard pieces if linear dimensions remain at or under 62 in (158 cm) and weight stays at or under 50 lb (23 kg); oversized or overweight pieces trigger surcharges, with overweight fees commonly starting near $100 USD and rising substantially above 70 lb (32 kg).
International operators: Lufthansa, British Airways and Air France accept commercial shipping cartons but apply either a piece concept or weight concept depending on fare class and route; verify which concept applies on your itinerary and request oversized handling when linear dimensions exceed 158 cm.
Low-cost carriers: Ryanair, EasyJet and Wizz impose stricter external-dimension rules and may reject irregular containers at gate screening; advance purchase of a special tag or pre-notification increases acceptance odds, while on-the-spot refusals carry limited carrier liability.
Packing recommendations: reinforce corners with strapping tape, double-wrap seams, place fragile items in padded inner containers, secure loose parts, remove or properly declare spare lithium batteries, affix a durable ID tag with phone and address, and photograph contents immediately prior to handover.
Operational steps: call the airline’s baggage service desk when booking and again 48–72 hours prior; request written confirmation via email when an agent approves a non-standard container; consider declared-value coverage or shipping high-value items via courier. If transporting compact items such as an umbrella, compare options and consider buying a replacement at destination – see best small golf umbrella. Travelers planning souvenir shipments nearby attractions may find related logistics when checking the best aquarium in orlando.
How to measure a carton and calculate dimensional weight
Measure external dimensions in inches, then calculate dimensional weight (DIM) with the carrier divisor; airlines bill by the greater of DIM versus actual scale weight.
Measure length, width and height at the longest points including wheels, handles, straps and any protrusions. Round each measurement up to the next whole inch when the carrier requests imperial units; round up to the next whole centimetre if metric is specified.
Imperial formula (inches → pounds): (L × W × H) ÷ 166 = DIM weight in lb. Many passenger airlines apply 166 as the divisor; a minority apply 139 or 167. Always round DIM up to the next whole pound per carrier policy.
Metric formula (centimetres → kilograms): (L × W × H) ÷ 6000 = DIM weight in kg. Round up to the next whole kilogram when the airline requires metric rounding.
Example (imperial): 30 × 20 × 12 in → 7,200 in³ → 7,200 ÷ 166 = 43.37 lb → billed as 44 lb. If the scale shows 35 lb, billing will reflect 44 lb.
Example (metric): 76 × 51 × 30 cm → 116,280 cm³ → 116,280 ÷ 6000 = 19.38 kg → billed as 20 kg.
Check the carrier’s published divisor, rounding rule and maximum linear dimensions (L+W+H) before departure. Oversize linear sums or single-side exceedances typically trigger an oversize fee separate from weight-based charges.
At the check-in counter, have the parcel staged and weighed accurately; if mass approaches the allowance, bring a trolley to move heavy parcels to the counter best luggage trolleys.
How to pack fragile items to survive aircraft hold handling
Wrap each fragile object in two layers of 10 mm bubble wrap (3/8″) and place items inside a rigid hard-shell case surrounded by at least 5 cm (2″) of cushioning on every side; preferred clearance is 10 cm (4″).
Item preparation and individual protection
Clean and dry objects, then wrap them individually: first layer soft tissue or acid-free paper, second layer 10 mm bubble wrap, third optional 5 mm foam sheet for items with sharp edges. Secure with non-solvent tape only on the wrap, not directly on the item surface.
For glassware, ceramics and single-pane picture frames: roll each item with corrugated board corners, then two bubble-wrap layers, and place vertically with separators between pieces. For electronics: place in original foam inserts when available, add moisture-absorbing silica gel packets (2–5 g per 1000 cm³ internal volume).
Internal layout, cushioning and shock control
Center heavy items and surround them with lightweight padding; do not let fragile items touch exterior walls. Use layered approach: 1) base pad: 5–10 cm closed-cell polyethylene foam, 2) item layer with separators (corrugated dividers or custom-cut foam), 3) top pad identical to base. Target total internal clearance of 10–15 cm around the group for high-risk transit.
Add crush-proof inserts for irregular shapes: 30–50 kg/m³ polyethylene foam or 20–30 kg/m³ polyurethane foam cut to shape. For very fragile or high-value pieces, add an internal suspension system (slinging with foam strips) to isolate from direct impacts.
Fragility level | Wrap per item | Minimum side padding | Divider / insert | Extra measures |
---|---|---|---|---|
High (glass, ceramics, single-pane frames) | 2× 10 mm bubble + corrugated corners | 10 cm (4″) | Corrugated dividers or cut foam | Vertical orientation, silica gel |
Medium (electronics, plated metal) | 1× 10 mm bubble + 5 mm foam sheet | 5 cm (2″) | Original foam insert or custom-cut foam | Antistatic wrap, screw down loose parts |
Low (books, textiles, framed prints with plexi) | Paper wrap + 5 mm foam | 3–5 cm (1–2″) | Flat foam layers | Rigid flat support to prevent bending |
Seal seams with water-resistant tape and reinforce corners externally with edge protectors. Mark the exterior with two adhesive “FRAGILE” labels and place a printed inventory inside. For high-value shipments add tamper-evident seals and photograph the packed configuration before drop-off.
Sealing, labeling, and attaching ID to a carton destined to aircraft hold
Seal all seams with 2-inch (48 mm) polypropylene packing tape applied in an H-pattern across top and bottom; extend each run 50–75 mm past edges.
- Select filament (fiberglass) tape rated ≥150 lbf tensile when seams will see high stress; place a 25–50 mm strip centered over every primary seam.
- Apply two 25 mm polyester straps positioned circumferentially, one near each end; secure with crimp seal or buckle and tension until snug (target 25–50 lbf).
- Affix tamper-evident numbered seals across the main opening; photograph serials and store images in phone or cloud storage.
- Attach a Travel Sentry/TSA-approved combination lock through strap loops or zipper pulls to allow authorized inspection by US security agents.
- Place the carrier-issued tag inside a waterproof clear pouch mounted on the top face adjacent to a handle; affix a second ID tag on a long side; insert a printed copy of contact and routing details behind the pouch and inside the carton.
- Include these fields on external and internal ID: full name; telephone with country code (example: +44 20 …); email; destination city and IATA code (example: LHR); final street address; alternate contact; flight number and date.
- Remove or obscure previous carrier barcodes and old stickers to prevent misreads and misrouting.
- Apply two “FRAGILE” stickers and two orientation arrows on opposite faces; recommended sticker size 75 × 100 mm or mark clearly with a permanent waterproof marker.
- Reinforce exposed corners and handles: wrap 75 mm tape around edges and add rigid corner protectors when shipping heavy items.
- Insert a laminated duplicate ID card stapled to the inner flap; include the same contact fields plus a brief inventory list of high-value contents.
- Photograph all sides, both ID tags, the carrier tag in the pouch, and every seal number immediately before handing to the agent; retain photos until delivery confirmed.
Recommended materials and specs:
- 2-inch (48 mm) polypropylene packing tape – primary top/bottom sealing.
- Filament (fiberglass) tape, ≥150 lbf tensile – seam reinforcement.
- 25 mm polyester strapping with crimp seals or ratchet buckles – external reinforcement.
- Tamper-evident numbered security seals or stainless cable ties – at least two across the main opening.
- Travel Sentry / TSA-approved combination lock (TSA007 compatible).
- Clear waterproof ID pouch, 150 × 100 mm (6 × 4 in) – carrier tag and printed contact copy.
- FRAGILE and orientation arrow stickers, 75 × 100 mm; permanent waterproof marker (black).
- Laminated duplicate ID card and a printed itinerary copy placed inside.
Choose suitcase, hard case, or air cargo: direct recommendation
Pick a wheeled suitcase when total mass ≤23 kg, linear dimensions ≤158 cm, contents are rugged, and quick gate-to-carousel transfer matters.
Select an ATA-rated hard case when electronics, musical instruments, artwork, or jewelry require maximum impact protection and water resistance; add custom foam inserts, layered padding, and TSA-approved locks; expect case tare weight of 2–6 kg and possible oversize surcharges if exterior size exceeds carrier limits.
Prefer air cargo when a single piece weighs >32 kg, any dimension surpasses 158 cm linear, shipment volume exceeds standard allowance, hazardous articles require documented handling, or door-to-door pickup, tracking, and customs brokerage are needed.
Decision checklist
- Weight thresholds: pick suitcase if ≤23 kg; consider hard case up to 32 kg when protection priorities outweigh added tare mass; choose cargo when >32 kg.
- Size limits: if linear dimension (length+width+height) >158 cm, expect oversize charges on passenger services; cargo often handles oversized items more economically.
- Value and fragility: items with high replacement cost or delicate components → hard case with fitted foam and declared value insurance.
- Hazardous or regulated items: lithium battery spares, industrial chemicals, large volumes of liquids → route through air cargo with proper declarations and IATA packing instructions.
- Multiple connections or mixed carriers: long transfers and non-aligned handling chains increase loss/damage risk → prefer cargo with tracking and customs brokerage.
- Speed versus cost: tight deadlines and short trips → suitcase; bulk or heavy shipments where per-kg cargo rates undercut excess/oversize passenger fees → air cargo.
Costs, paperwork, and handling notes
- Fees: passenger excess/oversize charges commonly range from $50 to $400 USD per piece depending on carrier and route; cargo pricing includes freight charge per kg, terminal handling, and customs clearance fees.
- Documentation: cargo shipments require airway bill, commercial invoice, and customs paperwork; high-value items benefit from declared value and insurance policy with explicit transit coverage.
- Timing: allow an additional 24–72 hours for cargo processing and customs clearance compared with normal gate procedures; express freight options shorten transit but increase cost.
- Security and locks: hard-sided containers with integrated TSA-accepted locks reduce tampering risk; loose-zip suitcases with cable ties provide less protection.
- Handling risk: repeated transfers increase impact exposure; choose hard case or cargo routing when multiple ground moves and transfers are unavoidable.