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USA Frontier free baggage size
45.7 × 35.6 × 20.3 cm
18 × 14 × 8 in (official) · 35 lb
Personal item, incl. handles, wheels and straps. Up to 35 lb.
Frontier's free personal item is 18 × 14 × 8 in (about 46 × 36 × 20 cm), measured with handles, wheels and straps included. Frontier's page gives a weight limit of up to 35 lb.
Watch out: Frontier says bags are sized at boarding. The centimetre figures are our conversion of Frontier's inches, rounded.
Official sources
Checked October 2026. Airlines change these rules, so your booking confirmation is the final word.
Baggage that fits Frontier’s free size (on paper)
Cabin MaxBackpack
Metz 24L backpack (40 × 30 × 20 cm) Stated size: 40 × 30 × 20 cm Ryanair: fits by stated sizeeasyJet: fits by stated sizeWizz Air: fits by stated sizeJet2: fits by stated sizeFrontier: fits by stated sizeAllegiant: fits by stated size
A simple soft backpack cut to exactly the Ryanair/Wizz under-seat size. View at Cabin Max ↗ Cabin MaxHoldall/backpack
Koda underseat cabin bag (40 × 30 × 20 cm) Stated size: 40 × 30 × 20 cm Ryanair: fits by stated sizeeasyJet: fits by stated sizeWizz Air: fits by stated sizeJet2: fits by stated sizeFrontier: fits by stated sizeAllegiant: fits by stated size
Cabin Max sells it as an under-seat bag for Ryanair, easyJet and Wizz Air. View at Cabin Max ↗ Cabin MaxBackpack
Manhattan Pro 24L cabin bag (40 × 30 × 20 cm) Stated size: 40 × 30 × 20 cm Ryanair: fits by stated sizeeasyJet: fits by stated sizeWizz Air: fits by stated sizeJet2: fits by stated sizeFrontier: fits by stated sizeAllegiant: fits by stated size
A smarter-looking 40 × 30 × 20 cm option for city breaks. View at Cabin Max ↗ Cabin MaxWheeled underseater
Anode 24L underseat small suitcase (40 × 30 × 20 cm) Stated size: 40 × 30 × 20 cm Ryanair: fits by stated sizeeasyJet: fits by stated sizeWizz Air: fits by stated sizeJet2: fits by stated sizeFrontier: fits by stated sizeAllegiant: fits by stated size
If you want wheels for cobbles-free cities. Check how your airline counts wheels. View at Cabin Max ↗ CabinZeroBackpack
Classic Backpack 28L (39 × 29.5 × 20 cm) Stated size: 39 × 29.5 × 20 cm Ryanair: fits by stated sizeeasyJet: fits by stated sizeWizz Air: fits by stated sizeJet2: fits by stated sizeFrontier: fits by stated sizeAllegiant: fits by stated size
A well-known travel backpack, slightly under the 40 × 30 × 20 cm box. View at CabinZero ↗ MonosBackpack
Metro Backpack (41.9 × 28.4 × 15.2 cm, 14 L) Stated size: 41.9 × 28.4 × 15.2 cm Ryanair: too bigeasyJet: fits by stated sizeWizz Air: too bigJet2: too bigFrontier: fits by stated sizeAllegiant: fits by stated size
A polished commuter-style backpack. At 41.9 cm tall it's over the 40 cm limit on Ryanair and Wizz, so we only recommend it for easyJet or the US airlines. View at Monos ↗ Guides planned to fit
Every guide’s packing list is planned to 40 × 30 × 20 cm, so it works on Frontier with room to spare.