Elqui 18L Daypack

Cotopaxi Elqui 18L Daypack is a 18L, 0.45kg1lb travel backpack measuring 44.5×26.7×19.1cm17.5×10.5×7.5in. It fits the carry-on size limit of 36 of 36 major airlines and the personal-item limit of 7 of 26. Under the seat, its 44.5cm17.5in side is over the 40cm15.7in limit at 12 of the 19 airlines it misses. Specs from cotopaxi.com, checked September 2026.

Volume: 18Lfixed size
Weight: 0.45kg1lb1lb0.45kg
Carry-on: 36/36airlines fit it
Personal item: 7/26under-seat limits

Dimensions: 44.5×26.7×19.1cm17.5×10.5×7.5in 17.5×10.5×7.5in44.5×26.7×19.1cm
Price: $90 as of September 2026
Laptop: no laptop sleeve
Opening: Panel access, Front panel opening
Warranty: Lifetime Replaces items with a manufacturing defect for the product's lifetime.
Compartments: n/a
Bottle pockets: 2

Price history

$90 at every weekly check since Oct 5, 2026 (3 checks).

Checked weekly on the brand's US store.

Hydration sleeve
Water-resistant
Hip belt (removable)
Sternum strap (removable)

Hiking daypack with stretch pockets on the harness
Stretch mesh front dump pocket
EVA foam mesh back panel

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

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

Draw against

Cabin bag, tight (0.9cm spare)Cabin bag, tight (0.4in spare) 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	Tight fit (0.9cm spare)Tight fit (0.4in spare)	Too bigToo big	6.6kg to pack (of 7kg)14.6lb 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	11.6kg to pack (of 12kg shared with personal item)25.6lb to pack (of 26.5lb shared with personal item)
Air India	Tight fit (0.9cm spare)Tight fit (0.4in spare)	No published limit	6.6kg to pack (of 7kg)14.6lb to pack (of 15.4lb)
AirAsia	FitsFits	Too bigToo big	6.6kg to pack (of 7kg shared with personal item)14.6lb 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	Tight fit (0.5cm spare)Tight fit (0.2in spare)	No published limitNo published limit
American Airlines	FitsFits	Tight fit (0.5cm spare)Tight fit (0.2in spare)	No published limitNo published limit
ANA (All Nippon Airways)	FitsFits	Too bigToo big	9.6kg to pack (of 10kg shared with personal item)21.2lb to pack (of 22lb shared with personal item)
AviancaCabin bag not on every fare	FitsFits	No published limit	9.6kg to pack (of 10kg)21.2lb to pack (of 22lb)
British Airways	FitsFits	Tight fit (0.5cm spare)Tight fit (0.2in spare)	No published limitNo published limit
Cebu Pacific	FitsFits	Too bigToo big	9.6kg to pack (of 10kg shared with personal item)21.2lb 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	Tight fit (0.5cm spare)Tight fit (0.2in spare)	14.6kg to pack (of 15kg)32.2lb to pack (of 33.1lb)
Emirates	FitsFits	No published limit	6.6kg to pack (of 7kg)14.6lb to pack (of 15.4lb)
Frontier AirlinesCabin bag not on every fare	FitsFits	Tight fit (0.9cm spare)Tight fit (0.4in spare)	15.5kg to pack (of 15.9kg)34.2lb to pack (of 35.1lb)
Gol Linhas Aereas	FitsFits	No published limit	9.6kg to pack (of 10kg)21.2lb to pack (of 22lb)
IndiGo	FitsFits	No published limit	6.6kg to pack (of 7kg)14.6lb 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	11.6kg to pack (of 12kg shared with personal item)25.6lb to pack (of 26.5lb shared with personal item)
LATAM Airlines	FitsFits	Tight fit (0.5cm spare)Tight fit (0.2in spare)	11.6kg to pack (of 12kg)25.6lb to pack (of 26.5lb)
LufthansaCabin bag not on every fare	FitsFits	Too bigToo big	7.6kg to pack (of 8kg)16.8lb to pack (of 17.6lb)
Norwegian Air ShuttleCabin bag not on every fare	FitsFits	Too bigToo big	9.6kg to pack (of 10kg shared with personal item)21.2lb to pack (of 22lb shared with personal item)
Qantas	FitsFits	No published limit	6.6kg to pack (of 7kg shared with personal item)14.6lb to pack (of 15.4lb shared with personal item)
Qatar Airways	FitsFits	No published limit	6.6kg to pack (of 7kg)14.6lb to pack (of 15.4lb)
RyanairCabin bag not on every fare	Tight fit (0.9cm spare)Tight fit (0.4in spare)	Too bigToo big	9.6kg to pack (of 10kg)21.2lb to pack (of 22lb)
SAS	FitsFits	Too bigToo big	7.6kg to pack (of 8kg)16.8lb to pack (of 17.6lb)
Singapore Airlines	FitsFits	Too bigToo big	6.6kg to pack (of 7kg)14.6lb to pack (of 15.4lb)
Southwest Airlines	FitsFits	No published limit	No published limitNo published limit
Turkish Airlines	FitsFits	Too bigToo big	7.6kg to pack (of 8kg)16.8lb 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	6.6kg to pack (of 7kg shared with personal item)14.6lb to pack (of 15.4lb shared with personal item)
VolarisCabin bag not on every fare	FitsFits	Tight fit (0.5cm spare)Tight fit (0.2in spare)	9.6kg to pack (of 10kg)21.2lb to pack (of 22lb)
VuelingCabin bag not on every fare	Tight fit (0.9cm spare)Tight fit (0.4in spare)	Too bigToo big	9.6kg to pack (of 10kg)21.2lb 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	9.6kg to pack (of 10kg)21.2lb 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 0.45kg1lb. Limits and sources. Own a different bag? Check it against every airline.