Delta Air Lines and Google will offer free in-flight WiFi to customers on Delta flights equipped with Gogo Inflight Internet service between Nov. 20, 2010 and Jan. 2, 2011.

With more than 540 WiFi-enabled aircraft flying more than 2,200 domestic flights each day, Delta expects more than 11 million customers to benefit from this holiday promotion.

“Our frequent travelers live with us in the air much of the year, and we are always looking for ways to say ‘thank you’ for their business,” said Tim Mapes, Delta’s senior vice president – Marketing. “Our holiday promotion with Google’s Chrome browser team allows us to offer our customers free WiFi as a small token of appreciation while also making it easier for them to squeeze last-minute shopping into their hectic schedules or connect with family members as they head home for the holidays.”

Delta began installing WiFi on its domestic fleet in fall 2008 and today operates the largest fleet of WiFi enabled aircraft in the world.

Customers using the free WiFi during the holiday season can tag #DeltaWifi on Twitter to show they are tweeting from 30,000+ feet. Users can also add the hashtag to their tweets to participate in discussions and follow other users by searching for “#DeltaWifi.”

More information on about Delta’s in-flight Wi-Fi services is available at delta.com/wifi and on their Facebook page at facebook.com/delta.

Virgin is also working with Google for WiFi access.

Many of you know that Virgin America is the first airline in the U.S. to offer fleetwide WiFi and they recently announced their own partnership with Google to provide the same types of services on their flights.

Same timeframe, November 20, 2010 through January 2, 2011,

Virgin America is also offering flyers one more seasonal gift: a sale on its award-winning flights, with “byte-size” fares from $39* short-haul and from $109* long-haul, restrictions, taxes and fees apply.

“As the only airline based in Silicon Valley, in-flight WiFi has been popular with our guests since we launched it on our first aircraft in November of 2008,” said David Cush, President and CEO of Virgin America. “Both business and leisure travelers are logging on at a growing rate, and many travelers consider the availability of in-flight WiFi one of the key factors in their booking decision. We saw a jump in the number of guests logging on after last year’s free WiFi gift and we expect to see an increase again. Once people try WiFi at 35,000 feet they rarely go back.”

Although guests traveling on any of Virgin America’s flights from November 20, 2010-January 2, 2011, will enjoy free web access via their mobile devices, Gogo is normally available for $12.95 for flights of over three hours; $9.95 for flights between 1.5 and three hours; $4.95 for short haul flights of less than 1.5 hours; and handheld/PDA pricing of $7.95 for flights over 1.5 hours and $4.95 for short flights. Monthly passes on Virgin America are also available for $29.95 for laptops and $19.95 for handhelds.