As US futures point to a lower start, a number of shares are in play.
The group says it is alerting black travellers to exercise caution because booking and boarding flights could cause them "disrespectful, discriminatory or unsafe conditions".
It has been monitoring a pattern of what it calls "disturbing incidents" on the carrier.
Shares closed on Tuesday 1.90% up to US$51.95 each. On Wednesday's regular session, shares sank 2.41% to US$50.70 each.
It has reported third quarter earnings, which saw EPS come in at US$2.72 per share, against US$2.66 per share as consensus expected.
The group also raised its full year earnings forecast to a range of between US$11.20 and $11.40 a share, up ten cents from its previous range of $11.10 – $11.30.
Boeing shares on Wednesday lost 3.18% to US$257.54.
Elsewhere, shares of Lumber Liquidators Holdings Inc (NYSE:LL) added nearly 4.64% to US$36.50 in pre-market deals after the company said it had inked a memorandum of understanding to settle claims related to Chinese laminated wood flooring it previously sold. in the regular session, shares shed 0.20% to US$34.83.
AT&T Inc ( NYSE:T) shares shed over 2% to US$34.15 after hours after it reported downbeat earnings for its third quarter yesterday. Today, it shed 3.995 to US$33.49.
Sprint Corp (NYSE:S) added 2% after hours to US$7.14 as Wall Street reckons it will report quarterly earnings at $0 per share on revenues of US$8.69 billion. In regular trade on Wednesday, the group gained 0.21% to US$7.04.