Travel packing · Rules checked July 2026

Will your bag fit before you reach the gate?

Packing lists are easy. The expensive part is finding out your wheels, handle, or overstuffed front pocket pushed the bag past an airline's actual rule.

Check my measured bag

Four source-complete U.S. airline policies. No product pitch. No pretend boarding guarantee.

Outside measurements count.Shell, pockets, wheels, handles, and whatever you crammed in at the last minute.

Working decision

One bag. Four airline rules. The catches left intact.

Enter the bag's three external dimensions once. The checker compares the same measured object with American, Delta, Southwest, and JetBlue, then separates a numeric fit from an under-seat condition or stale source.

Open the airline bag-fit checker

How this section earns a URL

Start with the wrong-answer risk

Measure
Use the real packed bag, not a retail dimension that may ignore bulges or hardware.
Compare
Keep each airline's item type, date, and documented exceptions attached to the answer.
Verify
Open the official rule before flying. Aircraft and itinerary conditions still outrank a website.

Keep working through the bag

Four different ways a packing plan can fail

Inside geometryWill these packing cubes fit?Volume budgetIs the bag enough for the trip?FAA battery rulesWhere can the battery go?Weight budgetHow much allowance is left?