Yes, in 2026, most major U.S. airlines like American, Delta, and United allow you to use flight credits or "Trip Credits" to purchase a Basic Economy ticket. However, you should be fully aware of the "Basic Economy" trade-offs before you book. While the credit will cover the cost of the fare, the ticket itself remains highly restrictive: you typically cannot change or cancel the flight for a refund later, you may not be allowed a carry-on bag, and you will likely be assigned a seat at the gate. Some airlines have recently updated their policies to allow "partial" credit for cancelled Basic Economy flights (minus a cancellation fee), which was previously unheard of. If you have a large credit balance, many frequent flyers suggest using it for a "Main Cabin" fare instead, as the added flexibility and included amenities often provide much better overall value than the small savings found in Basic Economy. Always check the specific "Terms and Conditions" of your credit in the airline's mobile app to see if there are any expiration dates or "fare class" restrictions that apply to your specific voucher.