Flight Search API Without Subscription

Search live fares and itineraries with Duffel pay-per-request — no airline-data contract for occasional lookups.

How do I add flight search without an airline-data deal?

Short answer: query Duffel through Locus and pay per request from one balance. Flight APIs normally mean commercial agreements, credentials per airline, and volume commitments. Through Locus you skip all of that — search live offers by route, date, and cabin with a single call.

What flight data can I get pay-per-use?

Live offer search

Search real fares across airlines by origin, destination, dates, passengers, and cabin class.

Itinerary details

Get segments, durations, layovers, baggage rules, and fare conditions for each offer.

Agent trip planning

Let an AI agent compare options, check the weather at the destination with OpenWeather, and summarize the best picks.

Why flights fit pay-per-request

•No airline contracts — Direct airline and GDS integrations demand business development and minimums. One balance replaces all of it for occasional use.
•Travel features without travel volume — Adding a fare widget, a trip planner, or an expense checker should not require travel-industry scale.
•Combine with context — Pair fares with OpenWeather forecasts and Tavily travel guides — three providers, one balance.

Build a fare check for cents

A typical flow: search offers for a route and date range, filter by duration and stops with a code step, and present the top three with trade-offs summarized by an LLM. Each search publishes its current per-request price in the catalog, so a travel feature costs exactly what its users trigger.

Related resources

Frequently asked questions

Can I add flight search without airline contracts?

Yes. Query Duffel live offers through Locus pay-per-request — no commercial agreements, credentials per airline, or volume commitments.

What flight details can I get by API?

Live fares across airlines with segments, durations, layovers, baggage rules, and fare conditions for each offer.

Can I build a fare-drop alert tool?

Yes. Search offers on a schedule, filter by duration and stops with a code step, and alert when the price drops.

Search flights pay-per-use View travel endpoints