Many premium cards that carry large annual fees come with annual travel credits. For example, the Chase Sapphire Reserve comes with a $450 annual fee, but also a $300 travel credit. This travel credit can be used for almost anything travel related.
American Express- American Express only covers airline incidentals on a chosen airline (e.g., bags, seat selection, etc.). For what might trigger the credit, check FlyerTalk: Southwest, American, Alaska, Delta, and United.
- Platinum- $200 airline credit per year and $15 Uber credit each month ($35 in December).
- Gold- $100 airline per year
- Hilton Aspire- $250 airline credit year, $250 Hilton Resort credit, and a free weekend night.
- Sapphire Reserve- $300 per cardmember year. The credit is automatic and covers almost everything travel related. (e.g., airline ticket or hotel room)
- Ritz Carlton- $300 per calendar year, which means you can get two credits in your first cardmember year. The travel credit is supposed to be only for airline incidentals (i.e. upgrades, bag fees, etc.), but I found a workaround that worked for three years so far to turn the credit into cash. I book a Frontier Airlines flight three months in advance with "The Works" package, which is basically refundability, seat upgrades, bags, etc. I screenshot the fees I paid for "The Works" and secure message that to Chase. A week after Chase gives me the travel credit, I cancel the Frontier flight for free and request a refund for the full amount from Frontier. That turns your hard to use travel credit into cash.
Citi Prestige- $250 every December, so you can receive the credit twice in your first cardmember year. The credit works for any purchase with an airline including airfare.
US Bank Altitude Reserve-$325 per cardmember year. Easy to use and automatic. It covers anything travel related including flights and hotels.
Bank of America Premium Rewards- $100 airline incidental credit per calendar year. In the past, American Airlines eGiftcards triggered the credit.
City National Bank Crystal Visa- $250 per calendar year for incidental charges. In the past, this has includes American Airlines eGiftcards and airline award taxes and fees.
Wells Fargo Propel World- $100 per cardmember year for airline incidentals. In the past, most airline gift cards triggered the credit.
First National Bank TravElite- $100 credit per calendar year. In the past, airline gift cards and award taxes and fees have triggered the credit.