American latest to add 'Basic Economy,' carry-on restrictions

American has formally introduced its long-expected Basic Economy fare class, saying the fare type will first go up for sale this February in 10 “select markets.”

With that, all three of the USA’s biggest airlines have now introduced their own versions of a basic economy fare. Like at United, fliers buying American’s Basic Economy fare will only be able to bring onboard carry-ons small enough to fit under the seat in front of them. Delta, the first to introduce a version of basic economy, does not restrict carry-ons.

For American, carry-ons that must be stowed in overhead bins are not allowed -- though elite-level frequent-fliers and holders of certain American Airlines-branded credit cards will be exempted.

American's Basic Economy fares also will not allow changes -- not even for a fee -- and will make fliers among the last to board the plane. The fares will earn frequent-flier miles, but elite status will be earned more slowly for those buying Basic Economy. Seats will be assigned at check-in or can be selected within 48 hours of departure for a fee.