If you've ever wondered whether a flight is cheaper in cash or miles, a browser extension called Points Path is betting you'll want to find out — and for a few days it's letting everyone try the paid version at no cost.

Through noon Eastern on Thursday, November 12, Points Path has switched on every Pro feature for all users. There's no credit card, no trial subscription and nothing to cancel afterwards: you just sign into a free account and the premium tools turn on. When the window closes, accounts drop back to the standard free tier.

So what does the tool actually do? It sits on top of Google Flights and displays award prices alongside the cash fares, so you can see what a seat costs in miles without opening separate searches on each airline's website. It also flags when an award price looks like a decent redemption rather than a poor one.

The free-for-now Pro package expands that significantly. Instead of the usual five airline programs, you can search award availability across 18, including Air Canada Aeroplan, Air France-KLM Flying Blue and Avianca LifeMiles — three of the most popular transfer partners for people holding flexible bank points. You also get Flight Alerts and Flex Alerts, which monitor specific awards so you're not refreshing the site yourself, plus a seven-day Points Calendar for comparing redemption prices across a whole week of dates. Two more perks are aimed at frequent flyers: Delta and United cardmember pricing, which surfaces the discounted award rates some co-branded cardholders get, and Points Wallet, a dashboard that keeps track of your airline miles and credit card points in one place.

The regular free version, which returns automatically after the promotion, still covers Alaska, American, Delta, JetBlue and United on both domestic and international routes with no search limits — a reasonable baseline if you mostly fly US carriers.

Anyone who continues past the promo will pay full freight: Pro normally runs $99.99 a year, with a public sale price of $89.99 for the first year. The site View from the Wing also passed along a code, VFTW15, which brings a new first-year subscription down to $84.99.

Why bother? If you've been sitting on transferable points and you're weighing which program to move them to for an upcoming trip, this is a rare chance to compare all the options side by side without committing to a subscription. Even a single search session before Thursday noon could tell you whether transferring to Avianca or Aeroplan saves you tens of thousands of miles on the same seat. Installation is simple — add the browser extension, create a free account, and you're in. If you like it, the discount code softens the annual fee; if not, you lose nothing and your account quietly reverts to the free tier.

One caveat: award availability and pricing change constantly, so treat the tool's "good deal" flags as a guide rather than gospel, and book promptly if you find the redemption you want.