Which credit card should you use for Alaska Airlines flights?

If you're about to book an Alaska Airlines flight, you may be wondering which credit card will help you earn the most rewards and enjoy benefits like free checked bags.Alaska Airlines is part of the Atmos Rewards loyalty program, along with Hawaiian Airlines. It offers three Bank of America credit cards — two personal cards and one business card. And right now, these cards are offering elevated bonuses:Atmos™ Rewards Ascent Visa Signature® credit card: Earn 70,000 bonus points and a $99 Companion Fare (plus taxes and fees from $23) after spending $2,500 on purchases in the first 90 days from account opening. Based on TPG's September 2026 valuations, the points-only part of this offer is worth $1,085.Atmos™ Rewards Summit Visa Infinite® credit card: Earn 80,000 bonus points and a 25,000-point Global Companion Award after spending $4,000 on purchases in the first 90 days from account opening. This bonus is worth up to $1,628 when you include the value of the 25,000-point Global Companion Award, according to TPG's valuations.Atmos™ Rewards Visa Signature® Business Card: Earn 70,000 bonus points and a $99 Companion Fare (plus taxes and fees from $23) after spending $4,000 on purchases ...