Boarding Sizer · 2026 ● Rejected

Amazon Basics 21-Inch Hardside Carry-On on Aer Lingus

Bag 21.7×14.8×10" vs sizer 21.6×15.7×9.4"

✕ Denied

Overhead Carry-On Verdict

No — it's oversized.

Personal Item · Under-Seat ✕ Too big

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Route AER · AMA

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The verdict, explained

At 21.7x14.8x10", the Amazon Basics 21-Inch Hardside Carry-On exceeds Aer Lingus's 21.6x15.7x9.4" carry-on sizer — it is 0.1" too big on its longest side, 0.6" too big on its shortest side. Expect it to be turned away at the gate and gate-checked. On Aer Lingus: Short-haul Saver fare: small cabin bag only. It is too large for Aer Lingus's under-seat personal-item space, so it has to go overhead or be checked.

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Dimension Breakdown inches

Axis	Bag	Sizer	Margin
Length	21.7"	21.6"	-0.1"
Width	14.8"	15.7"	+0.9"
Height	10"	9.4"	-0.6"

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Frequently asked

Does the Amazon Basics 21-Inch Hardside Carry-On fit Aer Lingus's carry-on size limit?

No. The Amazon Basics 21-Inch Hardside Carry-On is larger than Aer Lingus's 21.6x15.7x9.4" carry-on limit and will likely be gate-checked.

What is Aer Lingus's carry-on size limit?

Aer Lingus allows carry-on bags up to 21.6x15.7x9.4" (length x width x height), including wheels and handles. Short-haul Saver fare: small cabin bag only.

Can the Amazon Basics 21-Inch Hardside Carry-On be a personal item on Aer Lingus?

No. At 21.7x14.8x10" it is too big for Aer Lingus's under-seat personal-item space (13.0x9.8x7.9"); it travels as a carry-on instead.

Bags that clear Aer Lingus's sizer

Alternatives that fit the 21.6×15.7×9.4" limit outright.

The Amazon Basics 21-Inch Hardside Carry-On on other airlines

Same bag, different sizers — check before a connecting or return flight.

The bag

Amazon Basics 21-Inch Hardside Carry-On

Hardside Spinner · 21.7×14.8×10"

The Amazon Basics 21-Inch Hardside Carry-On is a hard-shell hardside spinner measuring 21.7x14.8x10 inches. Its rigid shell keeps a fixed shape, so its measured size is exactly what the gate sizer sees.

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💡 At the gate

Airlines measure at the widest external point — wheels, handles, and bulging pockets all count. Pull soft-bag compression straps fully tight before you size it.