These cards offer some of the highest sign-up bonuses, whether you prefer earning flexible rewards, airline miles, or hotel points but many are for a limited time.
The United Business card has the highest welcome bonus of any airline credit card right now, and it comes with elite-like benefits for a modest annual fee.
The United Club Infinite, Quest, Explorer, and Gateway cards all have higher-than-normal bonuses, but these offers will expire on August 10, 2022 by the end of the day.