Launching today
flights.cx
Describe your trip, get the best few ways to fly
1 follower
Describe your trip, get the best few ways to fly
1 follower
Tell it the trip in your own words. It asks only what it still needs, checks the dates and airports around yours, and comes back in about a minute with the best few ways to fly, each with its reason.
Free
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Promoted
Last summer I was booking a flight home and noticed two one-way tickets were way cheaper than any round trip. Flight search is supposed to find the best price, it doesn't always though.
So I built flights.cx. Describe the trip and your constraints in plain words, and it searches more than you would: your exact dates, the days either side, nearby airports, one ticket or two. You get the best few options, each with a line on why.
The first version took ~4 min a search. Then I moved the part that picks the flights from an LLM to Jev (TypeSafe's decision model). Searching is open-ended, it needs an LLM, but picking the best flight once you know the constraints is a decision. Searches dropped to ~1.5 min and results got consistent. All the price math is done in code, and any AI reply that invents a number gets thrown out.
It's beaten me at finding flights plenty of times, mostly when the dates can move. There are still rough edges I'm working through, and it hasn't fully replaced Google Flights for me yet, but it will soon.
Free, no account needed. Code's on GitHub (MIT).