Research
Travel data, checked and free to use
We track the rules that change what a trip costs: bag fees, carry-on limits and how long connections really take. Every study comes with its sources and a CSV you can use with a link back.
Checked Bag Fee Index 2026
What a checked bag costs on 44 airlines, converted to dollars, from free to $100+ each way.
Carry-On Size Index 2026
We measured a standard U.S. carry-on against the limits of 81 airlines. Abroad, it's too big more often than not.
Connection Time Index 2026
How long a layover you really need at 56 airports, from a quick domestic hop to customs and a terminal change.
The data is free to use in articles and research; please credit Good Flight Deals with a link to the study.
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