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Hey there, you’re reading an outdated post! The updated series from April 2015 can be found here.

This is the eighteenth post in a monthlong series. Each post will take about two minutes to read and may include an action item that takes the reader another two minutes to complete. I am writing this for an audience of people who know nothing about frequent flier miles, and my goal is that by the end, you know enough to fly for free anywhere you want to go.

This is the first of several posts that will talk about the basics of award bookings. I want to stress that this will just be the basics of award bookings. For complicated itineraries, you will need to learn a lot more, perhaps from my Anatomy of an Award series or Flyertalk. Or you’ll have to hire an expert award booker like me.

Today’s post will focus on using United.com, which is the best basic way to find availability when you’re booking with United or US Air miles. United and US Airways are both members of the Star Alliance, so their miles can be used to book awards on any Star Alliance carriers. United.com lists award space for most Star Alliance carriers, so you should start your award searches there.

On the home screen, in the flight search area, type in your origin and destination airports, your preferred outbound date, and the number of passengers. Now select One Way or Round Trip at the top and Award Travel at the bottom.

After clicking search, you’ll be brought to a screen with shaded calendars at the top and possible itineraries below. The calendar shows which dates have Economy availability, premium availability, or both. It’s a handy way to see which dates are your best options.

The itineraries below are listed from shortest time duration to longest. To the left of the itineraries, we can see whether there is saver space available on that itinerary in each of the three possible classes of service. Underneath the number of miles needed is the dollar amount of the taxes and fees for that itinerary.

Always scroll to the bottom of the itineraries because at some point, the list will start over with other, shorter itineraries that include partner flights.

One thing to be wary of is the icon just below the prices in miles and dollars that has an exclamation point and says Mixed Cabin. If you see that on a desirable itinerary, hold your cursor over the words Mixed Cabin. A small information bubble will pop up telling you the exact class on each flight.

You can then decide whether that itinerary merits its price or whether another is more desirable. If the classes are what you want except for a short regional flight, maybe the itinerary is OK. If the longest flight on the itinerary is in Economy, but United.com still wants to charge the first class price, the itinerary is a dud.

If you see an itinerary you like, and you’re using United miles, click on Select. If you are getting a oneway award, you’ll now pay for the reservation. If you were searching for a roundtrip, it will hold the outbound, and you’ll repeat the process to select a return.

If you see an itinerary you like, and you’re using US Air miles, note the flight numbers and times (or leave the screen up) and call US Air to book. As long as the itinerary has any non-US Air legs, the itinerary cannot be booked at usairways.com, so the phone ticketing fee will be waived when you call.

As a reminder, this is a very basic but adequate way to search Star Alliance availability when using US Air or United miles. More complicated ways that include searching segment by segment and using advanced tools like ExpertFlyer are beyond the scope of this post, but are discussed here at milevalue.com and elsewhere.

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