Flying with the kit
Travel Packs, Weighed in Grams
A bag you fly with is still a bag you carry. Here is the carry-on gear measured the same way as everything else on this site: the maker's own grams, against a named reference, divided by the price.
By Mike M. · Updated September 2026 · 1 page in this section

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Start here
NOMATIC Lineup
Top pick: NOMATIC Navigator RS Pack 15L. The only bag NOMATIC makes that beats the reference on weight: 1,089 g for 15 L expanding to 21 L, in 420D ripstop rather than tarpaulin, at the lowest list price in the range. It saves 394 g against the Farpoint 40 and is the best grams-per-dollar figure in the line by a distance.
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What this hub covers, and what it does not
This is a backpacking site, and this hub exists for one reason: at some point the kit has to get on a plane. That raises two questions the trail pages do not answer. What do you carry a backpacking pack in when a baggage belt would tear the mesh pockets off it, and if you want a single bag for a trip that is not a hiking trip, what does that bag weigh? Both are weight-and-money questions, so they get the same treatment as a tent or a quilt: the maker's own grams, measured against a named reference, divided by the price.
What this hub is not is a luggage section. There are no suitcases here, no packing cubes, no city-break guides and no “best destinations” lists. If a bag cannot be weighed in grams and compared against a reference, it does not belong on this site, and that rule has not moved.
Why travel packs get their own reference
Every score on this site is a comparison, and a comparison is only honest if the two things do the same job. Backpacking packs are measured against the Osprey Rook 65, a 62 L framed pack with a hipbelt that carries load. A 20 L clamshell carry-on does none of that, so scoring it against the Rook would produce a grams-saved figure that reads as damning and means nothing.
Carry-on travel bags therefore have a reference of their own: the Osprey Farpoint 40, 40 L at 1,483 g, the bag most people actually buy when they decide to travel with one bag. A travel pack that beats that on grams per dollar has earned something. One that does not is buying you organisation, structure or lockable zips instead, and the honest thing to do is say which.
Carry-on fit is a dimension problem, not a volume one
Litres do not get you through a gate; centimetres do. The widely cited cabin guideline is 55 x 40 x 20 cm, and every airline sets its own, usually tighter on depth than anything else. That last number is where expandable travel packs quietly fail: a bag that measures 15 cm deep collapsed and 24 cm deep expanded is inside the allowance empty and outside it packed. Every bag on this hub carries its maker-published dimensions in both inches and centimetres for exactly that reason, so you can check your own airline's figure against it before you buy rather than at the gate.
Flying with a backpacking pack
If you already own a pack you like, the cheapest answer to this whole hub is usually not another bag. A trail pack goes in the hold badly: the mesh pockets, the exposed webbing and the trekking-pole loops are exactly what a baggage belt catches, and a torn hipbelt a day before a trip is a bad day. Cinch every strap, stow or remove the hipbelt if it comes off, and put the whole thing inside a duffel or the pack's own raincover. That is a cheap fix for a problem a three-hundred-dollar bag also solves.
The other half of the answer is on the packs hub rather than this one. Best backpacking backpacks for travel ranks the 55-65 L packs that fly well, with published torso fits and the warranties that cover airline handling, and the sizing guide is where to start if you have never measured a torso. This hub picks up where those stop: the bags built as luggage first.
What the extra weight actually buys
Clamshell travel packs are heavy for their volume, and there is no way to present that otherwise. A tarpaulin shell, a structured panel, lockable YKK zips, a padded laptop sleeve and twenty-odd pockets all weigh something, and none of it carries load the way a frame does. What they buy is the thing a top-loading trail pack genuinely cannot do: open flat on a table, hold a laptop you can pull out at security without unpacking, and look like a work bag rather than an expedition.
That is a real trade and some people should take it. The point of weighing it in grams is that you take it knowingly. Start with the NOMATIC lineup, ranked — the range runs from a 1,089 g bag that beats the reference to a 2,341 g one that does not come close, and the gap between them is the whole argument.
Ranked picks
The rankings

Ranked picks
NOMATIC Lineup
Six NOMATIC carry-on bags with the maker's published weights and dimensions, ranked by grams saved per dollar against the Osprey Farpoint 40, with which ones actually fit a 55 x 40 x 20 cm cabin allowance.
By Mike M. · Updated November 2026
Top pick: NOMATIC Navigator RS Pack 15L · 6 ranked
Check price at NOMATICAlso on Amazon#ad · Price set by NOMATIC · Affiliate disclosure for the link to NOMATIC Navigator RS Pack 15L
From other sections
Keep going

Packs
Best Travel Backpacks
Five 55-65 L backpacking packs with maker-published torso fits, plus the premium one-bag carry-on, ranked by grams saved per dollar and judged on what matters when a pack also has to fly: access, closure, warranty and cabin dimensions.
By Mike M. · Updated November 2026
Top pick: Granite Gear Virga3 55 · 6 ranked
$199.95Virga3 55#ad · Price as of November 12, 2026 · Affiliate disclosure for the link to Granite Gear Virga3 55

Packs
Backpack Sizing Guide
Measure your torso length and hip circumference in two minutes, then match them to a size chart built from the ranges four makers publish, plus how to tell a fit problem from a volume problem.
By Mike M. · Updated October 2026
Featured pick: Granite Gear Virga3 55
$199.95Virga3 55#ad · Price as of November 12, 2026 · Affiliate disclosure for the link to Granite Gear Virga3 55

Packs
What Size Backpack
REI's liter ranges by trip length, how a lighter base weight shrinks the volume you need, and the published torso ranges across four budget packs.
By Mike M. · Updated September 2026
Featured pick: 3F UL Gear QiDian 40+16
QiDian 40+16 · check price#ad · Price as of November 12, 2026 · Affiliate disclosure for the link to 3F UL Gear QiDian 40+16
Questions