Most major U.S. airlines eliminated flat airline change fees on standard domestic tickets in 2020, but changing a flight still isn’t free. You’ll owe the fare difference whenever your new flight costs more than the original, basic economy tickets at most carriers can’t be changed at all, and ultra-low-cost airlines still charge modification fees running $49 to $99 per passenger per direction. There are also same-day change fees, third-party booking fees, and a handful of situations where the airline owes you a refund instead.
The 24-Hour Free Cancellation Window
Federal rules give you one guaranteed no-cost lever. Under 14 CFR 259.5, airlines must either hold your reservation at the quoted fare for 24 hours without payment, or let you cancel without penalty within 24 hours of booking.1eCFR. 14 CFR 259.5 – Customer Service Plan The catch: your flight must be at least seven days away. Book something departing in three days and this protection doesn’t apply.
If you cancel during the window, the airline must return your money in the original form of payment, not as a voucher or credit.1eCFR. 14 CFR 259.5 – Customer Service Plan This applies regardless of fare class, so even a non-refundable basic economy ticket qualifies during those first 24 hours. Once the window closes, the terms of your specific fare take over.
How Your Fare Class Decides What You Pay
The fare you picked at checkout controls almost everything about the cost of a change. This is where most travelers get caught, because the gap between a changeable ticket and a locked-down one can look small at purchase and turn expensive later.
Basic Economy
Basic economy is the most restrictive fare at every carrier that offers it. American Airlines basic economy tickets cannot be changed after the 24-hour window, though AAdvantage members may be able to cancel and receive a travel credit for a fee.2American Airlines. Basic Economy United’s basic economy works the same way: no changes allowed, only cancellation for partial travel credit after the first 24 hours.3United Airlines. Basic Economy If you can’t fly and you’re holding one of these tickets, you’ll likely lose most or all of the fare.
Standard Economy and Above
At the major carriers, regular economy and higher cabins no longer carry a flat change fee. United’s standard economy includes the ability to change your flight after booking with no fees.4United Airlines. Basic Economy – Section: United Economy American’s Main Cabin, Premium Economy, Business, and First Class all carry no change fee, though the fare difference still applies.5American Airlines. Fares and Trip Options Premium cabins generally include the most generous change and cancellation terms as a built-in benefit of the higher ticket price.
Ultra-Low-Cost Carriers
ULCCs are the exception to the industry trend. Frontier still charges change fees on basic fares: $49 per passenger per direction if you change between 59 and 7 days before departure, and $99 within the last six days. Their bundled and business fares avoid these charges entirely.6Frontier Airlines. Change Policy Don’t assume every airline has dropped change fees just because the biggest carriers have.
The Fare Difference and What Happens to Leftover Value
Even with no change fee, you’re responsible for the fare difference between your original ticket and the new flight. If your original ticket cost $350 and the replacement is currently priced at $500, you pay $150 to complete the switch. That calculation happens in real time based on current pricing, so the cost of a change can swing significantly depending on when you make it.
When the new flight costs less than your original, most airlines issue the leftover value as a travel credit rather than refunding the difference to your card. How long those credits last depends on the airline and fare type. American Airlines gives AAdvantage members 12 months to use trip credits and non-members six months.7American Airlines. Travel Credit Southwest’s credits from voluntary changes on standard fares expire 12 months from the original booking date, and basic fares drop to a six-month expiration.8Southwest Airlines. Expiration of Flight Credits
Not every carrier gives you the residual value at all. Frontier’s policy explicitly states that if your new itinerary costs less than the original, no leftover credit is issued.6Frontier Airlines. Change Policy Check the specific airline’s credit policy before switching to a cheaper flight thinking you’ll bank the difference.
Same-Day Change and Standby Fees
If you want an earlier or later departure on the day you’re flying, most major airlines offer two paths at very different prices.
Same-day confirmed changes guarantee you a seat on the new flight. American charges a starting fee of $60 for domestic routes.9American Airlines. Same-Day Travel Delta charges $75 for general members and Silver Medallion holders, while Gold, Platinum, and Diamond members pay nothing.10Delta Air Lines. Same-Day Flight Changes These fees are separate from any fare difference.
Same-day standby is usually free but comes with no seat guarantee. You keep your original booking while waiting for an open seat on an earlier flight; if space doesn’t open, you fly as originally planned. At Delta, standby is offered only when same-day confirmed isn’t available for the flight you want.10Delta Air Lines. Same-Day Flight Changes American offers standby at no charge for domestic routes.9American Airlines. Same-Day Travel Both options depend on seat availability, so they work best on routes with multiple daily departures.
When the Airline Owes You a Refund Instead
Some changes cost you nothing because the airline caused them. If the airline cancels your flight or makes a significant schedule change, you’re entitled to a full refund in your original form of payment regardless of whether you bought a non-refundable ticket. Under DOT rules, a “significant change” means a domestic flight rescheduled to depart or arrive three or more hours earlier or later than planned. For international flights, the threshold is six hours.11U.S. Department of Transportation. Refunds
Several other airline-initiated changes also trigger a refund right:
- Your departure or arrival airport is switched to a different one.
- The new itinerary has more stops than what you booked.
- You’re moved to a lower class of service than what you paid for.
If you decline the airline’s rebooking, the refund must go out within seven business days for credit card purchases and 20 calendar days for cash or check. Airlines sometimes offer travel vouchers instead of cash. You’re never required to accept them, and any voucher you do take must be valid for at least five years under DOT rules.11U.S. Department of Transportation. Refunds
Waivers for Military Orders, Bereavement, and Illness
Airlines routinely waive change restrictions and fees for active-duty military members who can’t travel because of deployment or orders. Spirit Airlines waives modification fees for service members with valid documentation such as a deployment letter or a notice from a governing body, though the fare difference still applies.12Spirit Airlines Support. What Benefits Does Spirit Provide for Active-Duty Military Service Members
Death in the family and serious illness are handled case by case. American Airlines considers ticket refunds when a passenger, immediate family member, or traveling companion dies, with documentation such as a death certificate and proof of relationship required. For critical illness, American requires qualifying documentation submitted directly to its refunds team. Policies vary across carriers, and none of these exceptions are automatic. You’ll need to contact the airline, explain the situation, and submit paperwork.
Travel insurance is another route. A policy purchased before the covered event can reimburse change fees and sometimes fare differences when you reschedule due to illness, injury, severe weather, mandatory evacuation, or similar unforeseen circumstances. Voluntary changes for personal convenience and pre-existing medical conditions are almost always excluded.
Third-Party Bookings Add Fees and Friction
Booking through an online travel agency like Expedia, Priceline, or Orbitz creates an extra layer that can make changes harder and more expensive. The DOT advises passengers to contact the travel agency directly for ticket problems, because the airline may be limited in what it can do when someone else issued the ticket.13U.S. Department of Transportation. Buying a Ticket
Many airlines won’t let you modify a third-party booking through their own website or app. You go back through the agency, which may charge its own service fee on top of whatever the airline charges. These agency fees vary but can add $25 to $50 to the cost of a change. The 24-hour federal cancellation rule still applies, but exercising it through a third party can involve longer hold times and more friction than a direct booking.
Making the Change Without Paying Extra
Log into the airline’s website or app and go to the trip management section, usually labeled “My Trips” or “Manage Reservations.” Enter your six-character booking confirmation code and last name to pull up the reservation.14Virgin Atlantic. Understanding Your Booking Select the segment you want to change, and the system shows available alternatives along with any cost difference. Pay the fare difference, confirm, and a revised itinerary arrives by email.
Handling the change by phone can cost you extra. Some carriers apply a ticketing service fee for phone-assisted transactions. Delta, for example, adds a $50 handling charge for same-day changes processed through its reservation line rather than online.15Delta Air Lines. Change Your Flight If the airline’s digital tools can handle your change, skip the call.