Best Carry-On for Budget Airlines (2026)

Monos lists the Carry-On at $275 on the official page we fetched earlier on November 10, 2026: 22 × 14 × 9 in including wheels and handles, 6.60 lb, 39.9 L, with a 100-day unused trial. The official warranty does not cover airline damage unless you add Essential or Pro within 30 days. Those exterior numbers sit inside United’s 9 × 14 × 22 in carry-on box, Frontier’s 24 × 16 × 10 in box, and Allegiant’s 10 × 16 × 22 in box. That is the rare clean paper match among the hard-shell spinners we have official sizes for. We have not put the bag in a sizer, and a packed bag can come in larger than the empty spec. Monos is still a better paper fit for a mixed United-plus-ULCC itinerary than Away’s official 14.4 in width.

Away lists The Carry-On at $275. The official Size block is 22 × 14.4 × 9.1 in including wheels and handles, 7.5 lb, 41 L. The same page’s FAQ has listed 21.7 × 14.4 × 9 in, and earlier header/meta figures on that page have listed 7.1 lb and 39.8 L. We disclose those official conflicts and do not average them. On the Size-block figures, the bag sits inside Frontier’s 24 × 16 × 10 in box and Allegiant’s 10 × 16 × 22 in box, and it sits over United’s published 14 in width and 9 in depth. LifetimeCare for purchases on or after April 14, 2026 covers years 1–5 of complimentary repairs for manufacturing defects and functional travel or airline mishandling, with one replacement if the bag cannot be repaired, and repair support after year 5. That warranty is a reason some shoppers still pick Away on a looser ULCC box even when the United paper fit is not clean.

Briggs & Riley lists the Baseline Essential 22" 2-Wheel at $679: 9.7 lb, 39–51 L, unexpanded exterior 22 × 14 × 9 in, expanding to 11.5 in deep with CX, then compressing again. Unexpanded, those figures match United’s box and sit inside Frontier and Allegiant. Expanded, 11.5 in is over Frontier’s and Allegiant’s 10 in depth and United’s 9 in — the same “may need to be checked or compressed when expanded” issue as other expandable bags. Simple as that® covers functional repairs for life, including airline damage, without proof of purchase; cosmetic damage and lost or stolen bags are excluded, and the customer pays inbound shipping. This is a two-wheel bag, not a spinner. It is also more than twice the official price of the Monos and Away spinners, which is why it is the fit-and-warranty pick, not a value pick.