Luggage Allowances and Airline Rules on a Long Journey

Luggage rules are one of the unglamorous realities of a long journey, and the traveller who has not looked into them before packing will eventually meet them in a way that is inconvenient and expensive. A multi-country journey typically involves several different airlines, and each operates under its own policy: different weight limits, different piece allowances, different rules about what qualifies as cabin baggage, and different charges when any of these is exceeded.

The good news is that the rules are knowable in advance and manageable without sacrificing the kit you need. The principle that resolves most complexity is simple: find the most restrictive allowance on any leg of your journey and pack to that limit for the whole trip. One bag configured for the strictest leg is a bag that will pass through every leg without a surprise. This article explains the landscape — the airline hierarchy, the light-aircraft problem, the carry-on question — so that the packing decisions you make at home hold up all the way to the departure gate.

How airlines set their allowances

Checked baggage allowances for long-haul international flights are typically generous: twenty-three kilograms per bag, sometimes two bags for business class, on the major network carriers that operate transatlantic and intercontinental routes. These allowances are set for economy on large widebody aircraft with substantial holds. They are not the benchmark for your whole journey — they are the upper end of a range.

Regional and domestic carriers, by contrast, often work to stricter limits: fifteen to twenty kilograms is common on smaller prop and jet services in Africa, South America and Central Asia. Budget carriers on short European or domestic segments may apply lower limits still, and often charge heavily for anything held luggage at all, making the carry-on limit the effective constraint. The booking confirmation or airline website for each segment tells you the allowance; a fifteen-minute check across all the flights in the itinerary before you pack is the whole task.

The light-aircraft problem

The most restrictive luggage rules on any of our journeys come not from commercial airlines but from the light aircraft that serve remote segments: the Cessna Caravan flight from a Serengeti airstrip on The Great Rift, the bush-plane hop to a remote high-altitude trailhead. These aircraft have small holds, weight-and-balance calculations that genuinely matter for safety, and firm limits that cannot be negotiated on the spot.

Most light-aircraft operators stipulate soft-sided luggage only, and often set limits as low as ten to fifteen kilograms total — carry-on included. Rigid suitcases, however well-rolling they are through an airport terminal, simply do not fit. Our itinerary documents flag every such leg clearly, but the practical rule is this: if your journey includes any remote airstrip transfer, your main bag must be a soft-sided duffel, and you must be able to consolidate your luggage to whatever the aircraft requires. A collapsible additional duffel for exactly this purpose is a useful addition to your kit.

Carry-on limits and what they actually mean

Every airline publishes a carry-on size limit, typically given as dimensions (height plus width plus depth) and a weight ceiling. In practice, the dimensions are enforced more consistently than the weight — the sizer frame at the gate is an objective test, while passengers carrying a noticeably heavy bag can often pass without being weighed. On low-cost carriers, carry-on enforcement has become stricter in recent years; on intercontinental long-haul it is generally more relaxed.

The items your carry-on must always contain — medications, travel documents, electronics, one change of clothing — place a practical floor on its size. A bag of twenty-five to thirty litres is typically the right carry-on for a complex multi-leg journey: large enough to hold the essentials, small enough to fit reliably in the overhead bin of a smaller regional aircraft and under the seat of a bush plane. Your carry-on is also your safety net if checked luggage is delayed; packing it to function independently for the first two days of the journey is sensible habit.

Fees, and how to avoid them

Excess baggage fees on international long-haul routes can be significant: twenty to fifty US dollars per kilogram is common, and an overweight bag by five kilograms can cost more than a night's accommodation. On some budget carriers, fees for hold luggage not booked in advance are punishingly high — sometimes exceeding the ticket price itself. Neither of these outcomes is inevitable, and neither requires you to pack less than you need.

Avoid them by knowing the allowance on every segment before you pack, packing to the most restrictive, pre-purchasing hold luggage on any budget carrier where it is offered, and weighing your bag at home. A small luggage scale — which weighs nothing and travels anywhere — pays for itself the first time it catches a bag that would otherwise have faced an airport charge. Checking in online where possible also allows you to declare luggage and pay the right rate in advance rather than at the counter.

Storing excess luggage along the route

Some segments of a long journey genuinely require less luggage than others. A polar expedition calls for bulky technical gear that is irrelevant in the Atacama desert; the heavy insulated jacket for Andes to Antarctica is unnecessary weight through the Peruvian summer. The practical solution for journeys where climate changes dramatically is left luggage: most major hotels will store a bag for guests between stays, and dedicated luggage storage facilities operate in most cities.

Our journey itineraries are built with vehicle transfers that can carry a larger volume of luggage than the most restrictive airstrip allows, so excess kit that would breach a bush-plane limit can often travel by road while you fly. The specific logistics of this — what travels how, and where a bag is collected — are detailed in each itinerary's logistics section. The principle is that you carry what the strictest mode of transport allows, and your other gear travels a different way when a better option exists.