Chasm 26L

Thule Chasm 26L is a 26L, 0.91kg2lb travel backpack measuring 53.3×30×21.1cm21×12×8.5in. 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 21.1cm8.3in side is over the 20cm7.9in limit at 15 of the 26 airlines it misses. Specs from thule.com, checked October 2026.

Volume: 26Lfixed size
Weight: 0.91kg2lb2lb0.91kg
Carry-on: 31/36airlines fit it
Personal item: 0/26under-seat limits

Dimensions: 53.3×30×21.1cm21×12×8.5in 21×12×8.5in53.3×30×21.1cm
Price: $159.95 as of October 2026
Laptop: up to 17"
Opening: n/a
Warranty: Lifetime Limited lifetime cover for defects in materials or workmanship, not wear, accidents or misuse.
Compartments: n/a
Bottle pockets: 1

Organizer
Water-resistant
Sternum strap
Luggage pass-through

Material: 100% recycled 900D polyester, Phthalate-free laminate

Padded laptop sleeve opens from the top or through a side zipper
Weather-resistant front panel and base, PFC-free water-repellent finish
Daisy chains and a bike light attachment loop

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

Does the Thule Chasm 26L 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	6.1kg to pack (of 7kg)13.4lb to pack (of 15.4lb)
Air CanadaCabin bag not on every fare	Tight fit (1.7cm spare)Tight fit (0.7in spare)	Too bigToo big	No published limitNo published limit
Air FranceCabin bag not on every fare	Tight fit (1.7cm spare)Tight fit (0.7in spare)	Too bigToo big	11.1kg to pack (of 12kg shared with personal item)24.5lb to pack (of 26.5lb shared with personal item)
Air India	Too bigToo big	No published limit	6.1kg to pack (of 7kg)13.4lb to pack (of 15.4lb)
AirAsia	Tight fit (1.9cm spare)Tight fit (0.7in spare)	Too bigToo big	6.1kg to pack (of 7kg shared with personal item)13.4lb to pack (of 15.4lb shared with personal item)
Alaska Airlines	Tight fit (1.9cm spare)Tight fit (0.7in spare)	No published limit	No published limitNo published limit
Allegiant AirCabin bag not on every fare	Tight fit (1.7cm spare)Tight fit (0.7in spare)	Too bigToo big	No published limitNo published limit
American Airlines	Tight fit (1.9cm spare)Tight fit (0.7in spare)	Too bigToo big	No published limitNo published limit
ANA (All Nippon Airways)	Tight fit (1.7cm spare)Tight fit (0.7in spare)	Too bigToo big	9.1kg to pack (of 10kg shared with personal item)20.1lb to pack (of 22lb shared with personal item)
AviancaCabin bag not on every fare	Tight fit (1.7cm spare)Tight fit (0.7in spare)	No published limit	9.1kg to pack (of 10kg)20.1lb to pack (of 22lb)
British Airways	FitsFits	Too bigToo big	No published limitNo published limit
Cebu Pacific	Tight fit (1.9cm spare)Tight fit (0.7in spare)	Too bigToo big	9.1kg to pack (of 10kg shared with personal item)20.1lb to pack (of 22lb shared with personal item)
Delta Air Lines	Tight fit (1.9cm spare)Tight fit (0.7in spare)	No published limit	No published limitNo published limit
easyJetCabin bag not on every fare	FitsFits	Too bigToo big	14.1kg to pack (of 15kg)31.1lb to pack (of 33.1lb)
Emirates	Tight fit (0.9cm spare)Tight fit (0.4in spare)	No published limit	6.1kg to pack (of 7kg)13.4lb to pack (of 15.4lb)
Frontier AirlinesCabin bag not on every fare	FitsFits	Too bigToo big	15kg to pack (of 15.9kg)33.1lb to pack (of 35.1lb)
Gol Linhas Aereas	Tight fit (1.7cm spare)Tight fit (0.7in spare)	No published limit	9.1kg to pack (of 10kg)20.1lb to pack (of 22lb)
IndiGo	Tight fit (1.7cm spare)Tight fit (0.7in spare)	No published limit	6.1kg to pack (of 7kg)13.4lb to pack (of 15.4lb)
JetBlue Airways	Tight fit (1.9cm spare)Tight fit (0.7in spare)	Too bigToo big	No published limitNo published limit
KLMCabin bag not on every fare	Tight fit (1.7cm spare)Tight fit (0.7in spare)	Too bigToo big	11.1kg to pack (of 12kg shared with personal item)24.5lb to pack (of 26.5lb shared with personal item)
LATAM Airlines	Tight fit (1.7cm spare)Tight fit (0.7in spare)	Too bigToo big	11.1kg to pack (of 12kg)24.5lb to pack (of 26.5lb)
LufthansaCabin bag not on every fare	Tight fit (1.7cm spare)Tight fit (0.7in spare)	Too bigToo big	7.1kg to pack (of 8kg)15.7lb to pack (of 17.6lb)
Norwegian Air ShuttleCabin bag not on every fare	Tight fit (1.7cm spare)Tight fit (0.7in spare)	Too bigToo big	9.1kg to pack (of 10kg shared with personal item)20.1lb to pack (of 22lb shared with personal item)
Qantas	Tight fit (1.9cm spare)Tight fit (0.7in spare)	No published limit	6.1kg to pack (of 7kg shared with personal item)13.4lb to pack (of 15.4lb shared with personal item)
Qatar Airways	Too bigToo big	No published limit	6.1kg to pack (of 7kg)13.4lb to pack (of 15.4lb)
RyanairCabin bag not on every fare	Too bigToo big	Too bigToo big	9.1kg to pack (of 10kg)20.1lb to pack (of 22lb)
SAS	Tight fit (1.7cm spare)Tight fit (0.7in spare)	Too bigToo big	7.1kg to pack (of 8kg)15.7lb to pack (of 17.6lb)
Singapore Airlines	FitsFits	Too bigToo big	6.1kg to pack (of 7kg)13.4lb to pack (of 15.4lb)
Southwest Airlines	FitsFits	No published limit	No published limitNo published limit
Turkish Airlines	Tight fit (1.7cm spare)Tight fit (0.7in spare)	Too bigToo big	7.1kg to pack (of 8kg)15.7lb to pack (of 17.6lb)
United AirlinesCabin bag not on every fare	Tight fit (1.9cm spare)Tight fit (0.7in spare)	Too bigToo big	No published limitNo published limit
Vietjet Air	Tight fit (1.9cm spare)Tight fit (0.7in spare)	Too bigToo big	6.1kg to pack (of 7kg shared with personal item)13.4lb to pack (of 15.4lb shared with personal item)
VolarisCabin bag not on every fare	Tight fit (1.7cm spare)Tight fit (0.7in spare)	Too bigToo big	9.1kg to pack (of 10kg)20.1lb to pack (of 22lb)
VuelingCabin bag not on every fare	Too bigToo big	Too bigToo big	9.1kg to pack (of 10kg)20.1lb to pack (of 22lb)
WestJetCabin bag not on every fare	Tight fit (1.9cm spare)Tight fit (0.7in spare)	Too bigToo big	No published limitNo published limit
Wizz AirCabin bag not on every fare	Tight fit (1.7cm spare)Tight fit (0.7in spare)	Too bigToo big	9.1kg to pack (of 10kg)20.1lb 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 0.91kg2lb. Limits and sources. Own a different bag? Check it against every airline.