You can change most JetBlue flights, but the cost depends on your ticket type and how far ahead you book the change

JetBlue lets you change your flight without a change fee on most tickets, but you will pay the difference if your new flight costs more. If your new flight costs less, JetBlue keeps the difference as a credit to your account — you do not get money back. The rules are stricter if you bought the cheapest "Blue Basic" fare: you cannot change the date or destination at all, though you can still change the time on the same day for free.

You can make the change online through your JetBlue account, by phone, or at the airport. The earlier you change, the more flight options you will have and the less likely you are to pay extra. Changing the day before or the day of travel often means paying a higher fare because fewer seats remain.

Key Takeaways

  • Blue Basic fares cannot be changed to a different date or destination, but you can switch to another flight on the same day at no cost.
  • Blue, Blue Plus, and Mint fares have no change fee, but you pay the fare difference if your new flight is more expensive.
  • You can change your flight online, by phone at 1-800-JETBLUE, or at the airport ticket counter.
  • The fare difference is calculated from the time you make the change, not from your original booking date, so last-minute changes often cost more.
  • If your new flight is cheaper, the difference stays in your JetBlue account as a credit and does not transfer to other airlines.

What each JetBlue ticket type allows

Blue Basic is the lowest-priced option. You cannot change the date or destination. You can change to a different flight on the same calendar day at no cost, but only if seats are available. If you need to change to a different day or city, you will have to cancel and rebook, which means losing your ticket value entirely — there is no refund or credit.

Blue is the standard economy fare. You can change to any other Blue or higher-tier flight on any date or to any JetBlue destination. There is no change fee. If the new flight costs more, you pay the difference. If it costs less, the difference becomes a credit in your JetBlue account that you can use for a future booking.

Blue Plus and Mint (the premium cabin) follow the same rules as Blue: no change fee, you pay fare differences, unused differences become credits. Blue Plus includes a checked bag and priority boarding, and Mint includes meals, lie-flat seats, and other premium amenities — those benefits stay with you if you change.

How to change your flight online

Log into your JetBlue account at jetblue.com and select "Manage My Booking" from the homepage. Enter your confirmation number and last name, then click the flight you want to change. You will see available flights for your new date and destination (if your ticket allows changes). The system will show you the fare for each option and calculate what you owe or what credit you will receive.

Review the new flight details, seat assignment, and total cost. If you are satisfied, complete the payment if there is a fare difference. You will receive a new confirmation number by email. Your original confirmation number is no longer valid — use the new one for check-in and any future changes.

If you are changing within 24 hours of your original flight, the online system may not let you complete the change. In that case, call 1-800-JETBLUE or go to the airport ticket counter.

Changing by phone or at the airport

Call JetBlue at 1-800-JETBLUE (1-800-538-2583) with your confirmation number and have your payment method ready if there is a fare difference. A representative will search for available flights, explain the cost, and process the change. Phone lines are busiest in the early morning and evening, so expect longer wait times during those hours.

At the airport, go to the JetBlue ticket counter before you check in. Tell the agent you want to change your flight. They can rebook you on the same day or a future date if seats are available. If you are changing on the day of travel and your new flight leaves soon, the agent may be able to expedite the process, but there is no may provide.

Understanding fare differences and credits

When you change your flight, JetBlue compares the price of your new flight to the price of your original flight at the time you make the change — not the price you paid when you booked. If airfares have gone up, you will pay the difference. If they have gone down, you receive a credit.

A credit stays in your JetBlue account under your name and confirmation number. You can use it for any future JetBlue flight for the same passenger. Credits do not expire as long as your account remains active, but they cannot be transferred to another person, refunded as cash, or used on other airlines. If you do not use the credit within a reasonable time, JetBlue may close your account and forfeit the balance, though the company does not publish a specific important date.

What happens if you miss your flight or need to cancel instead

If you miss your flight, you cannot change it — you can only cancel. Canceling a Blue Basic ticket gives you nothing. Canceling a Blue, Blue Plus, or Mint ticket gives you a credit for the full fare, which works the same way as a change credit: it stays in your account and you can use it for a future flight.

If you cancel and later decide you want to rebook, you will pay the current fare for the new flight and explore your credit to that cost. You do not get the difference back if the new flight is cheaper than the original.

Changing flights booked through a travel agent or third-party site

If you booked through a travel website like Kayak, Expedia, or Costco Travel, or through a travel agent, you cannot change the flight directly through JetBlue. You must go back to the site or agent where you booked and request the change there. They will contact JetBlue on your behalf and handle the fare difference.

This process takes longer than changing directly with JetBlue and may involve additional fees from the third party. If you frequently change flights, booking directly with JetBlue is faster and simpler.

Frequently Asked Questions

Can I change my flight to a different airline?

No. JetBlue changes are only to other JetBlue flights. If you want to fly a different airline, you must cancel your JetBlue ticket and book a new ticket with that airline. You will lose your JetBlue fare unless you have a credit from a previous change.

What if I want to change my flight but no seats are available?

If your ticket type allows changes but no seats exist on your preferred flight, you can request to be waitlisted. JetBlue will hold your original flight while you wait. If a seat opens up, you will be notified and the change will process. If no seat opens before your original flight departs, you keep your original reservation.

Do I have to pay a change fee if I change within 24 hours of booking?

No. JetBlue does not charge a change fee on any ticket type (except Blue Basic, which cannot be changed to a different date). The 24-hour window applies only to cancellations: you can cancel and get a full refund within 24 hours of booking if you booked at least seven days before departure.

Can I change my seat assignment when I change my flight?

Yes. When you change your flight online or by phone, you will be assigned a new seat automatically. You can then change your seat selection for free if other seats are available. At the airport, the agent can assign you a different seat when they rebook you.

What if the fare difference is very high?

You are not required to pay it. If the new flight costs significantly more, you can decline the change and keep your original flight. You can also cancel and receive a credit (if your ticket type allows it) and rebook later when fares are lower.