70%
Where this price sits in the route’s own history
Compared against fares we’ve recorded for the same route, the same departure month, and the same distance from departure. Not against a national average.
Flight price intelligence
Tell us your route.
We’ll email you when to book.
We watch the fare every day and score it against everything we’ve ever seen on that route. When it’s genuinely a good time to book, you get one email explaining why.
No search results to wade through.No account.No newsletter.
The Price Hash Score
A number that has to earn its own credibility.
Every fare we record gets scored 0–100 by deterministic code — never by a language model. Two inputs, both drawn from the route’s own history rather than from anyone’s opinion.
30%
How much runway is left
Most routes have a point where fares start climbing. We measure where that point actually falls on your route, and how far you still are from it.
0%
What anyone pays us
The scoring code has no access to affiliate data — not as a policy, but as a hard boundary in the codebase. It cannot rank by commission because it cannot see commission.
The confidence gate
When we don’t know, we say nothing.
Below sixty recorded fares for a route and booking window, we refuse to produce a score at all — and refuse to send you anything. Most weeks, most routes have nothing worth saying. You will hear from us less than you expect.
One bad alert teaches you to ignore every future one. That trade is never worth making.
under 20 fares recordedno score at all
20–59scored, but never emailed
60 or moreworth an email
What arrives
One email. One fare. One reason.
No digest, no roundup, no “12 deals you might like”. The reasoning line is the part that matters — it is what makes the number believable, and every figure in it is checked against the underlying data before it is ever sent.
JFK → LIS from $337. Book it.
Price Hash Score
94/100
JFK → LIS
From $337 one way · Nov 30 · AA
Lowest fare seen for these dates. Bags and seat selection are extra.
At $337, this is 26% below the typical $456 fare we see on this route for November departures. Across 60 fares recorded over 5 weeks, we have seen it below $350 twice. Fares on this route usually start climbing around 45 days before departure, and you are 84 days out.
When to book
The questions worth asking before you buy.
How far in advance should you book a flight? It depends on the route
Every single-number booking rule averages thousands of routes into a figure that fits none of them. Here's how to find where your route's fares start to climb.
Do flight prices drop closer to departure? Why last-minute deals are the exception
Last-minute fare drops are real, which is why waiting for one feels reasonable. Here's why they're the exception on most routes, and what to do instead.
Are flight price alerts worth it? What separates a useful alert from noise
Most price alerts tell you a fare changed. That's not the same as telling you it's good. Here's what to look for in an alert before it trains you to ignore it.
Common questions
Straight answers.
What is a Price Hash Score?
A Price Hash Score is a 0–100 rating of how good a specific flight fare is, judged against the recorded price history of that exact route, departure month and booking window. 90 or above means book it now. It is computed by deterministic code, never by an AI model.
How far in advance should I book a flight?
There is no single number of days that holds across routes. Each route has a point where its fares stop drifting and start climbing toward departure, and the aim is to book a good fare before it. PriceHash measures that point from the route’s own recorded fares, and until a route has enough history to locate it, makes no timing claim at all.
How often will PriceHash email me?
At most once a week per route, and usually far less. Alerts are sent on a score threshold plus a cooldown, never on a schedule, so if a route has nothing worth saying for a month you hear nothing for a month.
Is the fare in the email what I will pay?
It is the lowest fare seen for those dates, so bags and seat selection are extra. The score compares that lowest fare against the lowest fares recorded for the same route and booking window, which is a like-for-like comparison, but treat the figure in the email as where the price starts rather than a final total.
Does PriceHash sell flights?
No. PriceHash does not take payments, hold bookings, or act as a travel agent. The alert email links you to the fare and you book wherever you prefer.
Does an AI decide the price or the score?
No. Every number is computed by deterministic code. A language model only writes the sentence explaining the score, and every figure in that sentence is checked against the source data before the email is allowed to send.
What does PriceHash cost?
PriceHash is free while in beta. A paid tier with unlimited routes and earlier alerts is planned, but nothing is charged today.
How does PriceHash make money?
Eventually through a subscription. PriceHash may earn a small referral fee when you book, but the scoring code has no access to that data, so commissions cannot influence which fares you are shown.
Why does PriceHash sometimes refuse to score a route?
Below roughly 60 recorded fares for a route and booking window, there is not enough history to judge a price fairly, so PriceHash produces no score and sends no alert. One misleading alert costs more than several missing ones.
Pick one route you actually want to fly.
We’ll start recording it today and tell you when it’s worth booking.