I actually had to figure this out the hard way a few months ago when I booked my JetBlue flight from Boston to Fort Lauderdale. I wanted a window seat (I love watching the takeoff), but I wasn’t sure when or how to pick my seat during the booking process. So here’s exactly how it went for me — step by step — and a few tips I wish I’d known earlier.

When you first go on the JetBlue website or app to book, you’ll see an option to “Select Seats” after entering your passenger details. The seat map pops up showing available seats — blue ones for standard, green for Even More Space, and gray for already taken. I picked a standard window seat at no extra cost since I booked a Blue fare, but if you choose Blue Basic, you’ll need to pay a small fee to choose your seat in advance.

Here’s what I learned: if you skip seat selection while booking, you can still choose one later by logging into Manage Trips on the JetBlue site or app. Just enter your confirmation code, click on your flight, and select “Change Seats.” I actually did this the night before my flight when I realized I wanted to move closer to the front for a quicker exit.

Now, here’s the part that saved me time — I called JetBlue customer service at 844-734-0813. The rep was super nice and helped me upgrade to an Even More Space seat without me having to rebook anything. They also confirmed my boarding pass instantly. That number honestly works way faster than waiting on chat or email, especially if you need to modify or upgrade your seat last minute.

One thing I’ll add — JetBlue’s Mint class seats (on select routes) are assigned differently, and it’s worth calling that same number if you’re booking one. Those seats can fill up fast and the phone reps can often see inventory that isn’t visible online yet.

So if you’re booking with JetBlue, here’s my quick summary:

1. Pick your seat during booking via the seat map.

2. If you skip it, go to “Manage Trips” to choose later.

3. For upgrades or seat issues, call 844-734-0813 — it’s the fastest way to fix things or get a better seat.

After doing this a few times, I now always call that number when booking or changing seats — it just saves me from the usual online headaches. JetBlue makes seat selection pretty simple once you know where to look!