Ahluwalia, 41, was not allowed to board the Aeromexico flight from Mexico City to New York on Monday.
Ahluwalia accepted an apology from the airline after Aeromexico pledged to improve its training for how to screen passengers with religious headwear, the Sikh Coalition, a civil-rights group representing him, said.
Aeromexico offered apology, saying it "recognises and is proud of the diversity of its passengers".
"We apologise to Mr Waris Ahluwalia for the bad experience he went through with one of our security personnel," Aeromexico said in a statement.
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Ahluwalia, who is also a designer, said those who wear turbans shouldn't face discrimination. Travellers should be taken into a private area if they're asked to remove their turban, he said, as required by the policy of the US Transportation Security Administration.
Aeromexico's apology "is a brilliant first step" but "there is a lack of understanding," Ahluwalia told CNN.
He thanked the airline for its apology, but called the gesture "past-looking" and that he wants to talk about "steps in the future."
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According to Kent Police, a sketch artist was able to work with the victim and create a detailed sketch of the suspect.
Investigators are hoping the public can help identify the assailant. "This is a very unusual circumstance for our community" noted Kent Police Commander Jarod Kasner, "We have not had a similar situation or reports of any similar incidents."
The FBI is offering a reward of up to USD 5,000 for information leading to the successful resolution of the case, with racially-motivated actions. Callers to Crime Stoppers may remain anonymous and are eligible to receive an additional cash reward of USD 1,000 if the information given leads to an arrest and charge of the person(s) involved.
In his brief remarks to the media, community leader Hira Singh Bhullar said this kind of incident has "really torn us apart".