No, as of 2026, Southwest Airlines does not allow you to use "Flight Credits" (travel funds) to purchase EarlyBird Check-In. Flight credits can only be applied toward the "base fare," taxes, and government fees of a new flight booking. Ancillary services—such as EarlyBird, pet fees, or upgraded boarding—must be paid for with a "fresh" form of payment like a credit card or a Southwest gift card. However, there is a "workaround" for some travelers: if you have a Southwest Rapid Rewards Priority Credit Card, you can pay for the EarlyBird fee and receive a statement credit for the cost (up to two per year). It is also important to note that EarlyBird Check-In is non-refundable; if you cancel your flight, the money spent on EarlyBird is forfeited and cannot be converted into a flight credit for future use.