Allpa 18L Daypack

Cotopaxi Allpa 18L Daypack is a 18L, 0.62kg1.4lb travel backpack measuring 43.2×27.9×20.3cm17×11×8in. It fits the carry-on size limit of 32 of 36 major airlines and the personal-item limit of 0 of 26. Under the seat, its 20.3cm8in side is over the 20cm7.9in limit at 15 of the 26 airlines it misses. Specs from cotopaxi.com, checked September 2026.

Volume: 18Lfixed size
Weight: 0.62kg1.4lb1.4lb0.62kg
Carry-on: 32/36airlines fit it
Personal item: 0/26under-seat limits

Dimensions: 43.2×27.9×20.3cm17×11×8in 17×11×8in43.2×27.9×20.3cm
Price: $130 as of September 2026
Laptop: up to 15"
Opening: Panel access, Traditional panel-loader with zippered main compartment
Warranty: Lifetime Replaces items with a manufacturing defect for the product's lifetime.
Fit: Women's
Compartments: n/a
Bottle pockets: n/a

Price history

$130 at every weekly check since Oct 5, 2026 (3 checks).

Checked weekly on the brand's US store.

Organizer
Water-resistant
Luggage pass-through

Material: Front panel 100% recycled 450D polyester TPU; body 100% recycled 840D ballistic ripstop nylon with PFAS-free C0 DWR finish and PU backing; lining 100% recycled polyester

15 inch padded laptop sleeve and 13 inch padded tablet sleeve
Women-focused fit in harness and back panel
Fleece-lined pocket and two exterior accessory pockets

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Last checked: 2026-09. Prices and specs may have changed.

Does the Cotopaxi Allpa 18L Daypack fit airline carry-on limits?

Draw against

Too bigToo big on Ryanair. cabin bag 55×40×20cm21.5×15.5×8in · under the seat 40×30×20cm15.5×12×8in. Bag in cminches, turned to fit.

Flag as a tight fit undercm spare

Airline	Carry-on	Personal item	Cabin-bag weight
Air Arabia	Too bigToo big	Too bigToo big	6.4kg to pack (of 7kg)14.1lb to pack (of 15.4lb)
Air CanadaCabin bag not on every fare	FitsFits	Too bigToo big	No published limitNo published limit
Air FranceCabin bag not on every fare	FitsFits	Too bigToo big	11.4kg to pack (of 12kg shared with personal item)25.1lb to pack (of 26.5lb shared with personal item)
Air India	Too bigToo big	No published limit	6.4kg to pack (of 7kg)14.1lb to pack (of 15.4lb)
AirAsia	FitsFits	Too bigToo big	6.4kg to pack (of 7kg shared with personal item)14.1lb to pack (of 15.4lb shared with personal item)
Alaska Airlines	FitsFits	No published limit	No published limitNo published limit
Allegiant AirCabin bag not on every fare	FitsFits	Too bigToo big	No published limitNo published limit
American Airlines	FitsFits	Too bigToo big	No published limitNo published limit
ANA (All Nippon Airways)	FitsFits	Too bigToo big	9.4kg to pack (of 10kg shared with personal item)20.7lb to pack (of 22lb shared with personal item)
AviancaCabin bag not on every fare	FitsFits	No published limit	9.4kg to pack (of 10kg)20.7lb to pack (of 22lb)
British Airways	FitsFits	Too bigToo big	No published limitNo published limit
Cebu Pacific	FitsFits	Too bigToo big	9.4kg to pack (of 10kg shared with personal item)20.7lb to pack (of 22lb shared with personal item)
Delta Air Lines	FitsFits	No published limit	No published limitNo published limit
easyJetCabin bag not on every fare	FitsFits	Too bigToo big	14.4kg to pack (of 15kg)31.7lb to pack (of 33.1lb)
Emirates	Tight fit (1.7cm spare)Tight fit (0.7in spare)	No published limit	6.4kg to pack (of 7kg)14.1lb to pack (of 15.4lb)
Frontier AirlinesCabin bag not on every fare	FitsFits	Too bigToo big	15.3kg to pack (of 15.9kg)33.7lb to pack (of 35.1lb)
Gol Linhas Aereas	FitsFits	No published limit	9.4kg to pack (of 10kg)20.7lb to pack (of 22lb)
IndiGo	FitsFits	No published limit	6.4kg to pack (of 7kg)14.1lb to pack (of 15.4lb)
JetBlue Airways	FitsFits	Too bigToo big	No published limitNo published limit
KLMCabin bag not on every fare	FitsFits	Too bigToo big	11.4kg to pack (of 12kg shared with personal item)25.1lb to pack (of 26.5lb shared with personal item)
LATAM Airlines	FitsFits	Too bigToo big	11.4kg to pack (of 12kg)25.1lb to pack (of 26.5lb)
LufthansaCabin bag not on every fare	FitsFits	Too bigToo big	7.4kg to pack (of 8kg)16.3lb to pack (of 17.6lb)
Norwegian Air ShuttleCabin bag not on every fare	FitsFits	Too bigToo big	9.4kg to pack (of 10kg shared with personal item)20.7lb to pack (of 22lb shared with personal item)
Qantas	FitsFits	No published limit	6.4kg to pack (of 7kg shared with personal item)14.1lb to pack (of 15.4lb shared with personal item)
Qatar Airways	FitsFits	No published limit	6.4kg to pack (of 7kg)14.1lb to pack (of 15.4lb)
RyanairCabin bag not on every fare	Too bigToo big	Too bigToo big	9.4kg to pack (of 10kg)20.7lb to pack (of 22lb)
SAS	FitsFits	Too bigToo big	7.4kg to pack (of 8kg)16.3lb to pack (of 17.6lb)
Singapore Airlines	FitsFits	Too bigToo big	6.4kg to pack (of 7kg)14.1lb to pack (of 15.4lb)
Southwest Airlines	FitsFits	No published limit	No published limitNo published limit
Turkish Airlines	FitsFits	Too bigToo big	7.4kg to pack (of 8kg)16.3lb to pack (of 17.6lb)
United AirlinesCabin bag not on every fare	FitsFits	Too bigToo big	No published limitNo published limit
Vietjet Air	FitsFits	Too bigToo big	6.4kg to pack (of 7kg shared with personal item)14.1lb to pack (of 15.4lb shared with personal item)
VolarisCabin bag not on every fare	FitsFits	Too bigToo big	9.4kg to pack (of 10kg)20.7lb to pack (of 22lb)
VuelingCabin bag not on every fare	Too bigToo big	Too bigToo big	9.4kg to pack (of 10kg)20.7lb to pack (of 22lb)
WestJetCabin bag not on every fare	FitsFits	Too bigToo big	No published limitNo published limit
Wizz AirCabin bag not on every fare	FitsFits	Too bigToo big	9.4kg to pack (of 10kg)20.7lb to pack (of 22lb)

Compared in any orientation against each airline's published size limit. A tight fit has under 2cm to spare, so a packed soft bag may not pass a sizer. Set it to 0 to turn the warning off. Weight is what the airline allows in the cabin minus this bag's empty 0.62kg1.4lb. Limits and sources. Own a different bag? Check it against every airline.