Does the Osprey Daylite Plus 20 fit American's carry-on bag limit?

Only if it is not packed full. The Osprey Daylite Plus 20 is listed 0.4 in deeper than the American carry-on bag limit (22 × 14 × 9 in (56 × 36 × 23 cm)), and fine on height and width. Packed less full, a soft pack gets thinner.

American limit 22 × 14 × 9 in (56 × 36 × 23 cm) · American baggage page, checked 2026-10-26Osprey Daylite Plus 20 48 × 28 × 24 cm (18.9 × 11.02 × 9.45 in) · maker’s page

Osprey Daylite Plus 20 in the American sizer

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FRONTSIDE14 in wide9 in deep22 in tall
American carry-on bag limitOsprey Daylite Plus 20, as listedDrawn to scale
FRONTSIDE14 in wide8 in deep18 in tall
American · Personal item

Osprey Daylite Plus 20

Too bigNo. The Osprey Daylite Plus 20 is larger than the American personal item limit of 18 × 14 × 8 in (45 × 35 × 20 cm) in height and depth: height −0.9 in, width +3.0 in, depth −1.4 in.
LimitBagRoomHeight, in1818.9−0.9 inWidth, in1411+3.0 inDepth, in89.5−1.4 inWeight, kgnone0.585—

Must fit under the seat in front of you.

Other bags for American

Daylite Plus 20 on other airlines

AirlineVerdict
DeltaFits if not packed full
UnitedFits if not packed full
SouthwestFits
JetBlueFits if not packed full
SpiritFits
FrontierFits
AllegiantFits
RyanairToo big
All 18 airlines for the Daylite Plus 20

Questions

Is the Osprey Daylite Plus 20 allowed as American carry-on bag?

Only if it is not packed full. The Osprey Daylite Plus 20 is listed 0.4 in deeper than the American carry-on bag limit (22 × 14 × 9 in (56 × 36 × 23 cm)), and fine on height and width. Packed less full, a soft pack gets thinner.

Is the Osprey Daylite Plus 20 allowed as American personal item?

No. The Osprey Daylite Plus 20 is larger than the American personal item limit of 18 × 14 × 8 in (45 × 35 × 20 cm) in height and depth: height −0.9 in, width +3.0 in, depth −1.4 in.