Spelt
I was frustrated with existing APIs for searching flight prices, so I built this. It's a simple API to search for flights and get their prices. It can also return booking links. Generous free tier (happy to give more credits, lmk) + super low pricing. Lmk any thoughts or improvement ideas :)
Spelt launched on August 18, 2015 with 94 votes, #434 of 3,588 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 11 years on.
What it does
Ignav is a self-serve API for flight prices and booking links. Search one-way or round-trip fares, filter by price, airline, bags, stops, and time, then use the returned ignav_id to fetch direct airline and OTA booking URLs. It’s built for flight search apps, price trackers, and AI travel tools, with 1,000 free requests and simple usage-based pricing.
A self-serve API for flight prices and booking links. Build flight search apps, price trackers, and AI travel tools.
Build flight search, price trackers, and AI travel tools with a simple self-serve API. Every answer is a couple of calls — live fares, then a link straight to the airline. Every itinerary includes an ignav_id you can use to fetch booking links. curl -X POST "https://ignav.com/api/fares/one-way" \ -H "X-Api-Key: YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{"origin":"SFO","destination":"JFK","departure_date":"2026-10-07"}' Response Read the docs → { "origin" : "SFO" , "destination" : "JFK" , "departure_date" : "2026-10-07" , "itineraries" : [ { "price" : { "amount" : 299 , "currency" : "USD" , "status" : "verified" } , "outbound" : { "carrier" : "American Airlines" ,…from ignav.com
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Intuitive nutrition information2015 · spe.lt · ▲89A self-serve API for flight prices and booking links. Build flight search apps, price trackers, and AI travel tools.
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