Updated

Southwest Airlines plans to sell live television service on five planes and expand it to more aircraft by mid-July.

The airline said Thursday that it would offer seven sports and news channels for passengers to watch on their own devices.

outhwest said it will test prices from $3 to $8 during a trial period. Passengers will need a Wi-Fi-enabled device such as a smartphone, tablet or laptop computer.

Live TV will be offered separately from wireless Internet access and customers won’t have to buy Internet access to watch TV.

The Southwest channels: NBC Sports, MLB (Major League Baseball), NFL Network, CNBC, MSNBC, Fox News and Fox Business News.

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Southwest hired Row 44 to provide the service, which the airline plans to expand to 20 planes by mid-July. Southwest said that if the service is successful, it will be added to all the airline’s Wi-Fi-enabled planes by the end of the year.

The airline has about 550 Boeing 737 jets including about 250 with Wi-Fi. It plans to outfit 70 percent of its fleet by the end of 2013.

Airlines have been expanding in-flight entertainment options such as Internet access to distinguish themselves from other airlines that often sell tickets for about the same price.