Discovery 45L Backpack

Antler Discovery 45L Backpack is a 45L, 1.47kg3.2lb travel backpack measuring 55×35×24cm21.5×14×9.5in. It fits the carry-on size limit of 14 of 36 major airlines and the personal-item limit of 0 of 26. Under the seat, its 24cm9.4in side is over the 20cm7.9in limit at 15 of the 26 airlines it misses. Specs from antler.co.uk, checked October 2026.

Volume: 45Lfixed size
Weight: 1.47kg3.2lb3.2lb1.47kg
Carry-on: 14/36airlines fit it
Personal item: 0/26under-seat limits

Dimensions: 55×35×24cm21.5×14×9.5in 21.5×14×9.5in55×35×24cm
Price: $240 as of October 2026
Laptop: up to 16"
Opening: Clamshell, Full side opening for suitcase-style packing
Warranty: Lifetime Suitcases bought from 11 May 2023, manufacturing faults, registered within 30 days; bags and backpacks not mentioned.
Compartments: n/a
Bottle pockets: n/a

Organizer
Shoe compartment
Water-resistant
Sternum strap
Luggage pass-through

Material: Water-repellent recycled polyester

Large internal pocket big enough for shoes
Padded laptop sleeve for devices up to 16 in
Discreet trolley handle strap and chest strap

Last checked: 2026-10. Prices and specs may have changed.

Does the Antler Discovery 45L Backpack 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	5.5kg to pack (of 7kg)12.1lb to pack (of 15.4lb)
Air CanadaCabin bag not on every fare	Too bigToo big	Too bigToo big	No published limitNo published limit
Air FranceCabin bag not on every fare	Tight fit (no spare)Tight fit (no spare)	Too bigToo big	10.5kg to pack (of 12kg shared with personal item)23.1lb to pack (of 26.5lb shared with personal item)
Air India	Too bigToo big	No published limit	5.5kg to pack (of 7kg)12.1lb to pack (of 15.4lb)
AirAsia	Too bigToo big	Too bigToo big	5.5kg to pack (of 7kg shared with personal item)12.1lb to pack (of 15.4lb shared with personal item)
Alaska Airlines	Too bigToo big	No published limit	No published limitNo published limit
Allegiant AirCabin bag not on every fare	Tight fit (no spare)Tight fit (no spare)	Too bigToo big	No published limitNo published limit
American Airlines	Too bigToo big	Too bigToo big	No published limitNo published limit
ANA (All Nippon Airways)	Tight fit (no spare)Tight fit (no spare)	Too bigToo big	8.5kg to pack (of 10kg shared with personal item)18.7lb to pack (of 22lb shared with personal item)
AviancaCabin bag not on every fare	Tight fit (no spare)Tight fit (no spare)	No published limit	8.5kg to pack (of 10kg)18.7lb to pack (of 22lb)
British Airways	Tight fit (1cm spare)Tight fit (0.4in spare)	Too bigToo big	No published limitNo published limit
Cebu Pacific	Too bigToo big	Too bigToo big	8.5kg to pack (of 10kg shared with personal item)18.7lb to pack (of 22lb shared with personal item)
Delta Air Lines	Too bigToo big	No published limit	No published limitNo published limit
easyJetCabin bag not on every fare	Tight fit (1cm spare)Tight fit (0.4in spare)	Too bigToo big	13.5kg to pack (of 15kg)29.8lb to pack (of 33.1lb)
Emirates	Too bigToo big	No published limit	5.5kg to pack (of 7kg)12.1lb to pack (of 15.4lb)
Frontier AirlinesCabin bag not on every fare	Tight fit (1cm spare)Tight fit (0.4in spare)	Too bigToo big	14.4kg to pack (of 15.9kg)31.7lb to pack (of 35.1lb)
Gol Linhas Aereas	Tight fit (no spare)Tight fit (no spare)	No published limit	8.5kg to pack (of 10kg)18.7lb to pack (of 22lb)
IndiGo	Tight fit (no spare)Tight fit (no spare)	No published limit	5.5kg to pack (of 7kg)12.1lb to pack (of 15.4lb)
JetBlue Airways	Too bigToo big	Too bigToo big	No published limitNo published limit
KLMCabin bag not on every fare	Tight fit (no spare)Tight fit (no spare)	Too bigToo big	10.5kg to pack (of 12kg shared with personal item)23.1lb to pack (of 26.5lb shared with personal item)
LATAM Airlines	Tight fit (no spare)Tight fit (no spare)	Too bigToo big	10.5kg to pack (of 12kg)23.1lb to pack (of 26.5lb)
LufthansaCabin bag not on every fare	Too bigToo big	Too bigToo big	6.5kg to pack (of 8kg)14.3lb to pack (of 17.6lb)
Norwegian Air ShuttleCabin bag not on every fare	Too bigToo big	Too bigToo big	8.5kg to pack (of 10kg shared with personal item)18.7lb to pack (of 22lb shared with personal item)
Qantas	Too bigToo big	No published limit	5.5kg to pack (of 7kg shared with personal item)12.1lb to pack (of 15.4lb shared with personal item)
Qatar Airways	Too bigToo big	No published limit	5.5kg to pack (of 7kg)12.1lb to pack (of 15.4lb)
RyanairCabin bag not on every fare	Too bigToo big	Too bigToo big	8.5kg to pack (of 10kg)18.7lb to pack (of 22lb)
SAS	Too bigToo big	Too bigToo big	6.5kg to pack (of 8kg)14.3lb to pack (of 17.6lb)
Singapore Airlines	Tight fit (1cm spare)Tight fit (0.4in spare)	Too bigToo big	5.5kg to pack (of 7kg)12.1lb to pack (of 15.4lb)
Southwest Airlines	Tight fit (1cm spare)Tight fit (0.4in spare)	No published limit	No published limitNo published limit
Turkish Airlines	Too bigToo big	Too bigToo big	6.5kg to pack (of 8kg)14.3lb to pack (of 17.6lb)
United AirlinesCabin bag not on every fare	Too bigToo big	Too bigToo big	No published limitNo published limit
Vietjet Air	Too bigToo big	Too bigToo big	5.5kg to pack (of 7kg shared with personal item)12.1lb to pack (of 15.4lb shared with personal item)
VolarisCabin bag not on every fare	Tight fit (no spare)Tight fit (no spare)	Too bigToo big	8.5kg to pack (of 10kg)18.7lb to pack (of 22lb)
VuelingCabin bag not on every fare	Too bigToo big	Too bigToo big	8.5kg to pack (of 10kg)18.7lb to pack (of 22lb)
WestJetCabin bag not on every fare	Too bigToo big	Too bigToo big	No published limitNo published limit
Wizz AirCabin bag not on every fare	Too bigToo big	Too bigToo big	8.5kg to pack (of 10kg)18.7lb 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 1.47kg3.2lb. Limits and sources. Own a different bag? Check it against every airline.