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Mileage harvesting

United award price tracker

United award prices change after you book. TopTier keeps checking your booked trip and alerts you when it gets cheaper, so you can rebook and get the difference back in miles. One successful harvest could cover years of Premium.

See my 2027 projection

✓ Free to start · No credit card · Takes ~2 minutes

Award monitor · SFO → LHR

Lower price found

Booked

170K

Now

110K

60,000 miles

Polaris business · UA 901 · illustrative example

How it works

  1. 01

    Add your booked award

    Pick it from your imported trips or enter the route, date, cabin and miles paid.

  2. 02

    TopTier keeps checking

    It compares the current price for your itinerary with what you paid, and can flag a shorter trip too.

  3. 03

    You get alerted and rebook

    When the savings pass your threshold, you rebook with United and get the difference back.

What's official vs. what TopTier does

  • Official United rule

    United prices awards on its own flights dynamically, so the miles needed can go up or down after you book.

  • Official United rule

    Award change and cancellation terms depend on your ticket and Premier status. Check United's current policy.

  • TopTier estimate

    TopTier's alerts rely on sampled availability. Always confirm the price on united.com before you rebook.

Frequently asked questions

It means rebooking an award trip you already hold when the same trip becomes cheaper in miles, so you get the difference back. TopTier watches booked awards and alerts you when that happens.

Monitored trips are checked on a regular schedule. You'll get an alert when the savings pass the threshold you set.

Yes, one active monitor is free with no credit card. Premium ($9.99/month) covers up to 20 monitored trips and searches.

No. TopTier alerts you and you rebook directly with United. United's change rules for your ticket and status apply.

Keep exploring

How to rebook a cheaper award

A step-by-step rebooking guide.

How United award pricing works

Why prices move after you book.

Where can my miles take me?

Browse current award opportunities.

Monitor your first trip free.

Add a booked award and TopTier watches it for you, with no credit card required.

See my 2027 projection

✓ Free to start · No credit card · Takes ~2 minutes