Well it's not a rumor anymore.
United, Southwest buy 73 Boeing jets in blow to Bombardier
United Airlines (UAL.N) said on Thursday it will buy 40 small planes from Boeing Co (BA.N), dealing a $3.2 billion blow to Bombardier Inc's (BBDb.TO) hopes of landing a major customer for its fledgling CSeries program.
Separately, Southwest Airlines Co (LUV.N) said it had ordered 33 of Boeing's 737-800 aircraft, a deal it struck in December but announced on Thursday.
(Reuters)
I believe the low price of oil was a big factor in this decision.
United could still buy smaller CS100s but that's now a very long shot.