If you only learn one mechanical detail about the GoWild Pass, make it this one. The booking window decides everything: what you can book, when you should be online, and why some people always seem to grab the good flights while others stare at sold out screens.
If you haven't read our plain English intro to the GoWild Pass yet, start there. This post goes one level deeper.
The domestic rule
Domestic flights become bookable at midnight, local time of the departure airport, on the calendar day before the flight leaves. Not 24 hours before. Midnight.
That distinction matters more than it sounds, so let's do it carefully with an example:
Your flight departs Saturday, at any time Saturday, whether 6am or 11:30pm. The day before is Friday. So the window opens at 12:00am Friday, the moment Thursday night ticks over into Friday. Every Saturday flight opens at that same moment.
Which means a flight leaving Saturday at 11:30pm can be booked almost 48 hours ahead if you're online right when the window opens. The people who dismiss GoWild as "same day only" have never done this math.
The international rule
International flights are friendlier: they open 10 days before departure. If you're eyeing Cancun, San Juan, or Costa Rica, you can plan a real trip with real notice. A lot of passholders use domestic fares for spontaneous hops and save the international window for trips that need a bit of structure.
Connections and time zones
Two details that save headaches:
- The window follows the local time of your departure airport. Booking a 6am flight out of Denver from the East Coast? Denver's midnight is 2am your time.
- For connecting itineraries, what matters is when your first segment departs. If the first leg leaves tomorrow, the system will ticket the whole journey even if the connection lands the day after.
The 60 minute cutoff
Booking closes 60 minutes before departure, at the same time check-in closes. Same day airport runs are absolutely a thing with this pass, but give yourself more margin than you think you need. Booking at minute 61 and then sprinting through security is a rite of passage we don't recommend.
Does availability change after midnight?
Constantly. Airlines oversell and adjust inventory all the way to departure. A flight that shows nothing at midnight can open up at 9am when a block of seats gets released, and a flight with plenty of GoWild space can vanish after a cancellation elsewhere floods it with rebooked passengers. Checking more than once is the strategy.
That routine is why we built WildFares. Instead of re-searching routes one by one all day, our engine watches the whole network and shows you what's open right now. But whether you use our tool or raw patience, the rule is the same: check early, check often.
Later in this series we'll cover early booking promotions, which bend these windows for a fee, and the blackout dates that override everything. Speaking of which, that's the next post.
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WildFares is an independent tool and publication. We are not affiliated with, endorsed by, or sponsored by Frontier Airlines, Inc. GoWild! is a trademark of Frontier Airlines, Inc. Where this article mentions third party products or services, including other GoWild search tools, those names are trademarks of their respective owners and we have no affiliation or relationship with them. Program rules, prices, taxes, and dates change often. Always confirm current terms directly with the airline before you buy or book anything.