United MileagePlus · UA

When Does United Airlines Release Award Seats? (2026 Guide)

Quick answer: United Airlines releases award seats exactly 337 days before departure through United MileagePlus, at midnight in Chicago (CT). New inventory loads on a rolling basis — every day at midnight, a fresh date 337 days from now becomes bookable.

Last verified: May 22, 2026

Release Window

T-337

days before departure

Time of Day

Midnight

Chicago (CT)

Loyalty Program

United MileagePlus

Where you book United Airlines award seats

United Airlines Award Release Schedule

Maximum advance	337 days before departure
Typical advance	337 days before departure
Time of day	Midnight, Chicago (CT)
Release cadence	Rolling daily — one new day at T-337 opens each midnight
Partner release rules	Partners typically see the same T-337 window with reduced inventory; check individual partner programs for exceptions
Last-minute releases	Often a second wave at T-14, T-7, and T-24h as unsold premium seats are dumped to awards
Program reference	https://www.united.com/ual/en/us/account/enroll/mileageplus

How United Airlines's Release Pattern Works

United opens awards 337 days out via dynamic pricing for own metal; partner space follows partner schedules.

How to Book United Airlines Award Seats the Moment They Open

Calculate the exact release moment. Departure date minus 337 days, midnight in Chicago (CT). Convert that to your local time and set an alarm.
Pre-fund the program. Make sure your United MileagePlus balance covers the redemption before the release moment — transfers from credit-card programs (Amex MR, Chase UR, Capital One, Citi TYP) can take minutes to days.
Have passenger details ready. Full legal names, passport numbers, dates of birth, and known traveller numbers. Premium-cabin saver awards can disappear in the time it takes to type a passport.
Be logged in five minutes early. Have the search page pre-loaded with route and date. Hit search the moment the clock changes.
Set a route alert as backup. Even if you miss the initial release, set a route alert so you're notified about mid-cycle releases and the T-14 / T-24h dumps.

Booking Tips for United MileagePlus

United's Excursionist Perk lets you add a free segment within the same continent on multi-segment awards.

Catch United Airlines Award Space the Moment It Opens

Search live availability or set a route alert and we'll ping you the moment new seats appear.

Search United Airlines availability Set a route alert

Frequently Asked Questions

When does United Airlines release award seats?

United Airlines releases award seats 337 days before departure through United MileagePlus. New inventory loads on a rolling daily basis, so each midnight a fresh day becomes bookable at the T-337 window (midnight in Chicago).

What time of day does United Airlines open award seats?

United Airlines releases the next bookable day at midnight local time in Chicago (CT). Set an alarm for the exact moment if you're chasing a premium-cabin seat — the most desirable awards on popular routes can disappear within minutes.

Can I book United Airlines award seats earlier than 337 days out?

No. 337 days is the maximum United MileagePlus booking window. The airline's revenue-management system loads each day's inventory one day at a time, so the date you want will become bookable on a rolling basis as it enters the T-337 window.

Does United Airlines release more award seats closer to departure?

Often, yes. Many airlines (including United Airlines) release a second wave of unsold premium-cabin seats to award inventory in the final two weeks before departure — typically at T-14, T-7, and T-24 hours. It's not as reliable as the initial release, but it's worth monitoring if you missed the first window.

How do I get notified when new United Airlines award space opens?

Set a route alert on Award Travel Finder for the specific origin/destination/date range you want. We monitor United Airlines availability and ping you the moment new award seats appear — including the last-minute releases at T-14 and T-24h.

Are partner award seats released at the same time as United Airlines's own?

Not always. Partners (other Star Alliance, Oneworld, or SkyTeam programs booking United Airlines) typically see United Airlines's inventory at the same T-337 window, but with reduced seat counts and occasional delays. For the best premium-cabin access on United Airlines metal, booking through United MileagePlus directly is usually the safest bet.