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This is the fifteenth post in a monthlong series that started here. 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. Previously Airline Partners and Hubs.

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, which is the best basic way to find availability when you’re booking with United or US Airways.

The basic way that award booking works is that airlines release space on certain flights in certain cabins for award bookings. These seats are usually equally available to members of their own mileage program and members of their partners’ programs.

Most people reading this site are Americans. Among Star Alliance members, Americans are most likely to have United or US Airways miles. They may also have Aeroplan (Air Canada), Miles & More (Lufthansa and others), KrisFlyer (Singapore), LifeMiles (TACA/Avianca), and other miles.

All these airlines are members of the Star Alliance, so their miles can be used to book awards on any Star Alliance carrier. lists award space for most Star Alliance carriers, so you should start your award searches there since few airline sites list award space for so many partners. Then you book with the airline whose miles you are using by calling that airline or using its website if possible.

On the home screen of, 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. I’ll search a oneway from San Francisco to Frankfurt.

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

The itineraries below the calendars are listed from shortest 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. Saver space is denoted with a blue button and is approximately half the price of “Standard” space.

There is nothing standard about Standard space. In my hundreds of award bookings, I have booked Standard space twice. It is double-priced space you should avoid. Furthermore, Standard space is only bookable with United miles. Saver space is available to all partners.

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 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, the computer 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 another Star Alliance member’s miles, note the flight numbers and times (or leave the screen up) and call the other airline whose miles you are using.

I know it’s confusing, but sometimes you search for Lufthansa space on then call US Airways to book if you are using US Airways miles.

When booking, the rules of the airline whose miles you are apply. That means the miles price may be different that says or there may be some other fees or fuel surcharges United would not charge. just tells you whether there is space, not the price the partner airline will charge.

As a reminder, this is a very basic but adequate way to search Star Alliance availability when using any Star Alliance 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 and elsewhere.

For further reading, see:

Master Thread: Free Oneways on United Awards

Tricking’s Award Calendar

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