Should-Cost — Air

Picture a forwarder’s air quote: $5.73 per chargeable kg, Shanghai to Frankfurt, all-in. Looks tight. Compares well to the published Air Index. Move on.

But that all-in number is hiding the structure. The base rate is $3.80/kg. Fuel surcharge adds $0.70/kg. Security/screening adds $0.08/kg. Origin handling adds $185 per shipment plus a per-kg fee. Destination handling, broker, AWB fee, trucking to the consignee — each one a separate line. Plus the duty that’s not in the quote at all. Plus the chargeable-vs-actual weight calculation that’s the single largest lever on most low-density lanes.

Air is the easiest mode to quote and the hardest mode to should-cost. A single per-kilogram rate hides a structure that is deeply lane- and commodity-specific.

Starting cold? “Should cost” decomposes a forwarder’s quoted price into the cost drivers underneath. Read the Air chapter first if the operational context is new.

Cost build-up — per shipment, airport-to-airport-plus-handling

Line item	Typical range	Primary driver	Negotiability	Benchmark
Base air freight (+100 kg bracket)	$2.00–$6.50 / chargeable kgillustrative	Trade-lane capacity, belly vs. freighter availability	Spot / contract split	[TAC Index], [WorldACD], [Xeneta]
Fuel surcharge (FSC)	$0.40–$1.20 / kgillustrative	Jet fuel price	Indexed (weekly or monthly)	Carrier tariff
Security surcharge (SSC / screening)	$0.04–$0.15 / kgillustrative	Origin regime ( TSA , ACC3 , RA3 )	Fixed	Carrier tariff
Origin handling (pickup, build-up, ULD build)	$75–$300 / shipment + $0.05–$0.25/kgillustrative	Forwarder local cost, ULD strategy	Negotiable with forwarder	Forwarder RFP
Airway bill fee	$35–$75illustrative	Carrier admin	Fixed	Carrier tariff
Dangerous goods handling (if applicable)	$75–$400 / shipmentillustrative	IATA DGR classification	Fixed by carrier DG tariff	[IATA DGR]
Destination handling, break-down, customs clearance	$125–$400 / shipment + $0.05–$0.20 / kgillustrative	Destination airport, broker tier	Negotiable	Broker RFP
Trucking to final destination	$0.15–$2.00 / kgillustrative	Distance, shipment size	Negotiable	[DAT] LTL benchmarks
Duty + MPF + fees	Variable	HTS, origin, tariff policy	None on rate; lots on classification	US HTS schedule, EU TARIC
Cold-chain premium (if CEIV Pharma)	25–60% over standard air rateillustrative	Commodity, carrier capability	Limited	Pharma carrier pricing
SAF book-and-claim	$5–$20 / kg on SAF shareillustrative	Sustainability target	Negotiable	Carrier SAF programs

Sensitivities

1. Chargeable vs. actual weight. Low-density freight pays on volumetric weight (6000 cm³/kg divisor per [IATA TACT]). Packaging optimization routinely yields 15–35% chargeable-weight reductionillustrative at zero freight-rate change. This is the single largest should-cost lever on most air lanes.
2. Weight-break brackets. Rates tier at -45 kg, +45, +100, +300, +500, +1000. A shipment that’s 290 kg chargeable should often be padded to 300 to drop into the next bracket; a 95 kg shipment consolidated with another of the same origin can save 20%+illustrative.
3. Routing (direct vs. 2-leg). 2-leg via a hub is often 30–50%illustrative cheaper than direct service on thinner lanes, at the cost of 1–2 additional transit days and a handoff failure point.
4. Day-of-week and peak timing. Mid-week capacity is looser than weekend; pre-Chinese-New-Year, pre-Christmas, and post-Black-Friday peaks tighten rates 50%+illustrative.

Where to benchmark

• Spot rates: [TAC Index] is the primary global air spot index; [Xeneta] provides contract and spot benchmarking for subscribers. [Freightos Air Index] publishes daily public spot data.
• Volumes and yields: [WorldACD] publishes market-level yield and tonnage data.
• DG-specific: [IATA DGR] for classification; carrier-specific DG surcharge tariffs for pricing.
• Cold chain: IATA CEIV Pharma certification is the practical bar; premium varies by lane.

Shipper levers

1. Packaging redesign. Measure actual vs. chargeable weight ratio on the last 90 days of air shipments. A ratio over 1.8illustrative means a meaningful share of your air spend is paying for packaging air.
2. Forwarder tender structure. For consistent air volumes, negotiate a lane-level agreement with 2 incumbents plus spot-access to a third; avoid single-forwarder dependency in volatile markets.
3. Weight-break optimization. Instrument your forwarder quoting to flag shipments within 10% of a weight break.
4. Sea-air hybrid conversion. For mid-value lanes where air is the reflex choice, sea-air via Dubai, LAX, or Singapore delivers 40–55%illustrative of air cost at 10–14 days vs. 30+ by ocean.
5. Expedite reason-coding. Require PO-level reason code on every air tender. Use the data to shift the root-cause conversation upstream.

Hidden-cost map

• Screening surcharges for unknown-shipper cargo in TSA / ACC3 regimes.
• DG reclassification fees. If origin handler disputes the shipper’s DG declaration, the shipment can sit until reclassified at shipper cost.
• Rebuild fees. If a forwarder has to rebuild a ULD at a transit hub because of oversize or weight distribution, a per-rebuild fee applies.
• Detention at airport. Cargo not moving through destination handling within free time (typically 24–48 hoursillustrative) triggers terminal detention, distinct from the trucker’s version.
• Cold-chain integrity events. A pharma lane where temperature was out-of-range triggers disposition cost and potentially full write-off.

Worked example

Lane: Shanghai PVG → Frankfurt FRA, 500 kg actual / 750 kg chargeable, general cargo, Tuesday tender in Q2. Numbers are illustrative.

Cost composition Total: $4,300

66%

12%

1. Base air freight (750 kg × $3.80) $2,850 66.3%
2. Fuel surcharge $525 12.2%
3. Destination handling + broker $340 7.9%
4. Trucking FRA → DC $210 4.9%
5. Origin handling $185 4.3%
6. Insurance (0.1%) $75 1.7%
7. Security surcharge $60 1.4%
8. AWB fee $55 1.3%

Line	Cost
Base air freight @ $3.80/kg × 750 kg	$2,850
FSC @ $0.70/kg × 750 kg	$525
Security surcharge @ $0.08/kg × 750 kg	$60
Origin handling	$185
AWB fee	$55
Destination handling + customs broker	$340
Trucking FRA → consignee DC (150 km)	$210
Duty + MPF equivalent	(excluded: commodity-dependent)
Insurance @ 0.1% of $75k value	$75
Airport-plus-handling total	$4,300

Effective “all-in” rate: $5.73 per chargeable kg, vs. the $3.80 base. The base freight is 66%illustrative of total; the other third is where shipper negotiation and operational discipline move the number.

References

• [IATA TACT] — the 6000 cm³/kg chargeable-weight divisor and general-cargo tariff structure.
• [IATA DGR] — dangerous goods classification and handling rules.
• [IATA ULD Regulations] — ULD specifications and build standards.
• [TAC Index], [WorldACD], [Xeneta], [Freightos Air Index] — air cargo rate and volume benchmarks.
• [GLEC Framework] — air emissions intensity methodology.

Full details on the References page.