Points Path is a new browser extension that lets you search for award flights using Google Flights. When you search for paid travel, it also shows you the price of an award. And if helps you compare whether it’s a good use of points or not.

• Points Path is a free tool to quickly find the best flights available with their miles and know whether they’re getting a good deal when using them. It populates results quickly right inside of Google Flights results.

• The browser extension comes from Julian Kheel, who used to write as The Devil’s Advocate for the Frequent Miler blog as well as serving as editorial director at The Points Guy and as travel and credit card rewards senior editor for CNN.

I really like the ability to click off of Google Flights to book award travel, not just paid flights.

Points Path is now out of beta because they’ve gone from just looking at one-way award pricing to doing roundtrip pricing as well (since you’ll often find lower roundtrip prices from Delta and American versus booking two one way trips). This is now available for United, Delta and American.

Julian tells me, “when an airline like Delta has an award sale that requires a roundtrip booking, you’ll see that same promotional pricing when you search roundtrip using Points Path.” And he also shares that the plan is to always keep this tool free.

They’re in the process of building out additional airline programs for this tool. For now this isn’t how you’re going to maximize transferable points like Chase, American Express and Bilt currencies using partners such as Turkish and ANA.

However they have Air France/KLM Flying Blue, Air Canada Aeroplan, and British Airways Executive Club in the near-term pipeline as additions.

I asked Julian how he plans to keep this tool free and he tells me that:

We currently earn money by providing travel-related content that contains affiliate links, much as others do. So as you search with Points Path, you may see stories about the best travel credit cards, or the best bonus offers currently available, and hopefully that content also provides value to people as they’re planning their trip.

In the future, Points Path will also have advanced features that may require a small monthly fee to access. For instance, our decision arrows that tell you whether to “Use Cash” or “Use Miles” on a flight are based on our ongoing analysis of cash and award pricing data. But there are folks who would rather set their own value for each currency, or who want even deeper calculations. For example, some travelers might want to know what United miles are worth when redeeming for first or business class seats, or the expected value of Delta miles if you’re booking less than 7 days out. So we’ll ask for a nominal fee from folks who really want to personalize their experience.

One of the things I’m most interested in is the data from the award searches Points Path is doing. They’re running thousands of searches per day, and this is what they’ve learned:

• “[M]ost frequent flyer experts value Delta SkyMiles somewhere between 1.0 and 1.3 cents per mile. Our own data shows a median value of 1.13 cents per Delta mile, almost exactly in the middle of that range.

• “And the general consensus that American miles are worth the most of the three major domestic programs, followed by United and then Delta, is also borne out in our data.”

Now, the value of a mile isn’t ‘the amount of travel you can buy with a mile.’ If you have cash, you can do more things with it than you can with miles. You need to apply a discount for the limits on how you can use the miles, and because we’ve seen that the Federal Reserve is willing to fight price inflation more aggressively than frequent flyer programs. The “value of a mile” is the price at which you’re indifferent to holding cash versus miles. But getting data on how much travel a given airline’s miles will buy is a useful starting place.

Download the tool, give it a spin, and share what you think.