In U.S. airline news, Virgin America has increased certain passenger fees; Delta has opened up the availability of its Economy Comfort seats through more sales channels; and United creates a new spending opportunity for MileagePlus miles.

• Virgin America Airlines has boosted its fee for ticket changes and cancellations on non-refundable fares from $75 to $100, effective for tickets booked after July 20. The same fee increase from $75 to $100 applies to redeposits of Elevate points into a member's account when the member cancels an award ticket. And Virgin America customers who use the airline's call center to select or upgrade a seat assignment will now face a $20 service fee, the airline said.

• Airlines have been under increasing pressure to make all their ancillary fees more transparent, and more readily available for sale through more channels, and Delta has taken a step in that direction with its Economy Comfort extra-legroom seating. Delta said the extra-legroom seats can now be booked and purchased through the Amadeus global distribution system, which is used by many travel agencies worldwide to process airline bookings.

• United Airlines has kicked off its new MileagePlus Digital Media Store, a web-based content library where members of the carrier's loyalty program can use their miles to purchase and download music tracks, albums and movies. It is open to MileagePlus members who live in the U.S. The inaugural emphasis of the program is on music of all genres. In addition, "certain movies are available now, and TV shows and additional movies become available later this year," United said. Members can browse the offerings at www.digitalmediastore.mileageplus.com.