FlyerTalk Forums - View Single Post - Does same day change still exist?
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Old Feb 4, 2020 | 5:38 pm
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sfozrhfco
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Join Date: Apr 2003
Programs: B6 Mosaic 3, Bonvoy LT Titanium (x SPG LT), UA Silver
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Depends on the fare type:

https://www.jetblue.com/flying-with-us/our-fares

You should be able to do it online but since the introduction of the basic fares, some changes seem to not be working, so if it doesn't allow you to change it online, you can call.
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