No. 643 Large Carryall

Billykirk No. 643 Large Carryall is a 30L, 1.7kg3.7lb duffel measuring 30.5×48.3×22.9cm12×19×9in. It fits the carry-on size limit of 31 of 36 major airlines and the personal-item limit of 0 of 26. Under the seat, its 22.9cm9in side is over the 20cm7.9in limit at 15 of the 26 airlines it misses. Specs from billykirk.com, checked October 2026.

Volume: 30Lfixed size
Weight: 1.7kg3.7lb3.7lb1.7kg
Carry-on: 31/36airlines fit it
Personal item: 0/26under-seat limits

Dimensions: 30.5×48.3×22.9cm12×19×9in 12×19×9in30.5×48.3×22.9cm
Price: $675 as of October 2026
Laptop: n/a
Opening: n/a
Warranty: 5 years Called a limited lifetime warranty, but bags are covered for 5 years and Standard Issue items for 2.
Compartments: n/a
Bottle pockets: n/a

Organizer
Water-resistant
Shoulder strap

Material: 20 oz waxed canvas (#10 Duck), premium vegetable-tanned full-grain leather, nickel-plated solid brass hardware

Carry-on approved for virtually any airline, per Billykirk
Waxed canvas gives natural water and abrasion resistance
Adjustable cotton webbing shoulder strap (39 to 49 1/2 in), handle drop 6 1/4 in
Specs for the waxed canvas version; the leather versions weigh 4.10 lb

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

Does the Billykirk No. 643 Large Carryall 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	5.3kg to pack (of 7kg)11.7lb to pack (of 15.4lb)
Air CanadaCabin bag not on every fare	Tight fit (0.1cm spare)Tight fit (0in spare)	Too bigToo big	No published limitNo published limit
Air FranceCabin bag not on every fare	FitsFits	Too bigToo big	10.3kg to pack (of 12kg shared with personal item)22.7lb to pack (of 26.5lb shared with personal item)
Air India	Too bigToo big	No published limit	5.3kg to pack (of 7kg)11.7lb to pack (of 15.4lb)
AirAsia	Tight fit (0.1cm spare)Tight fit (0in spare)	Too bigToo big	5.3kg to pack (of 7kg shared with personal item)11.7lb to pack (of 15.4lb shared with personal item)
Alaska Airlines	Tight fit (0.1cm spare)Tight fit (0in spare)	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	Tight fit (0.1cm spare)Tight fit (0in spare)	Too bigToo big	No published limitNo published limit
ANA (All Nippon Airways)	FitsFits	Too bigToo big	8.3kg to pack (of 10kg shared with personal item)18.3lb to pack (of 22lb shared with personal item)
AviancaCabin bag not on every fare	FitsFits	No published limit	8.3kg to pack (of 10kg)18.3lb to pack (of 22lb)
British Airways	FitsFits	Too bigToo big	No published limitNo published limit
Cebu Pacific	Tight fit (0.1cm spare)Tight fit (0in spare)	Too bigToo big	8.3kg to pack (of 10kg shared with personal item)18.3lb to pack (of 22lb shared with personal item)
Delta Air Lines	Tight fit (0.1cm spare)Tight fit (0in spare)	No published limit	No published limitNo published limit
easyJetCabin bag not on every fare	FitsFits	Too bigToo big	13.3kg to pack (of 15kg)29.3lb to pack (of 33.1lb)
Emirates	Too bigToo big	No published limit	5.3kg to pack (of 7kg)11.7lb to pack (of 15.4lb)
Frontier AirlinesCabin bag not on every fare	FitsFits	Too bigToo big	14.2kg to pack (of 15.9kg)31.3lb to pack (of 35.1lb)
Gol Linhas Aereas	FitsFits	No published limit	8.3kg to pack (of 10kg)18.3lb to pack (of 22lb)
IndiGo	FitsFits	No published limit	5.3kg to pack (of 7kg)11.7lb to pack (of 15.4lb)
JetBlue Airways	Tight fit (0.1cm spare)Tight fit (0in spare)	Too bigToo big	No published limitNo published limit
KLMCabin bag not on every fare	FitsFits	Too bigToo big	10.3kg to pack (of 12kg shared with personal item)22.7lb to pack (of 26.5lb shared with personal item)
LATAM Airlines	FitsFits	Too bigToo big	10.3kg to pack (of 12kg)22.7lb to pack (of 26.5lb)
LufthansaCabin bag not on every fare	Tight fit (0.1cm spare)Tight fit (0in spare)	Too bigToo big	6.3kg to pack (of 8kg)13.9lb to pack (of 17.6lb)
Norwegian Air ShuttleCabin bag not on every fare	Tight fit (0.1cm spare)Tight fit (0in spare)	Too bigToo big	8.3kg to pack (of 10kg shared with personal item)18.3lb to pack (of 22lb shared with personal item)
Qantas	Tight fit (0.1cm spare)Tight fit (0in spare)	No published limit	5.3kg to pack (of 7kg shared with personal item)11.7lb to pack (of 15.4lb shared with personal item)
Qatar Airways	Tight fit (1.7cm spare)Tight fit (0.7in spare)	No published limit	5.3kg to pack (of 7kg)11.7lb to pack (of 15.4lb)
RyanairCabin bag not on every fare	Too bigToo big	Too bigToo big	8.3kg to pack (of 10kg)18.3lb to pack (of 22lb)
SAS	Tight fit (0.1cm spare)Tight fit (0in spare)	Too bigToo big	6.3kg to pack (of 8kg)13.9lb to pack (of 17.6lb)
Singapore Airlines	FitsFits	Too bigToo big	5.3kg to pack (of 7kg)11.7lb to pack (of 15.4lb)
Southwest Airlines	FitsFits	No published limit	No published limitNo published limit
Turkish Airlines	Tight fit (0.1cm spare)Tight fit (0in spare)	Too bigToo big	6.3kg to pack (of 8kg)13.9lb to pack (of 17.6lb)
United AirlinesCabin bag not on every fare	Tight fit (0.1cm spare)Tight fit (0in spare)	Too bigToo big	No published limitNo published limit
Vietjet Air	Tight fit (0.1cm spare)Tight fit (0in spare)	Too bigToo big	5.3kg to pack (of 7kg shared with personal item)11.7lb to pack (of 15.4lb shared with personal item)
VolarisCabin bag not on every fare	FitsFits	Too bigToo big	8.3kg to pack (of 10kg)18.3lb to pack (of 22lb)
VuelingCabin bag not on every fare	Too bigToo big	Too bigToo big	8.3kg to pack (of 10kg)18.3lb to pack (of 22lb)
WestJetCabin bag not on every fare	Tight fit (0.1cm spare)Tight fit (0in spare)	Too bigToo big	No published limitNo published limit
Wizz AirCabin bag not on every fare	Tight fit (0.1cm spare)Tight fit (0in spare)	Too bigToo big	8.3kg to pack (of 10kg)18.3lb 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 1.7kg3.7lb. Limits and sources. Own a different bag? Check it against every airline.