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Delta Air Lines

One of flying's few freebies: Online messaging

One of flying's few freebies: Online messaging

Since most airlines began nearly a decade ago to charge for extras that previously were included in the cost of the ticket, freebies have become rare for air travelers.

But there are a few exceptions.

The latest example is Delta Air Lines, which on Oct. 1 began to let passengers on most flights use their smartphones, laptop computers and digital tablets to send messages for free, using the carrier’s onboard Wi-Fi system.

The program lets passengers contact friends and family via iMessage, Whatsapp and Facebook Messenger.

Alaska Airline launched a similar service earlier this year. Not to be outdone, American Airlines’ chief executive, Doug Parker, announced...

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