Flight price watcher → SMS when it drops
Tell Carly your route and target price — she monitors fares hourly and texts you the moment something drops below the threshold.
The workflow at a glance
How this workflow works, step by step
- 1 Trigger Hourly check
Carly runs this workflow on a schedule — hourly check. No clicks, no reminders. It just fires.
- 2 HTTP Fetch fares
Carly makes an HTTP request to fetch fares. Useful for APIs that don't have a native integration — auth, retries, and pagination are handled.
- 3 Filter Below threshold
Carly drops anything that doesn't match: below threshold. The flow only continues for relevant items.
- 4 LLM Summarize deal
An LLM step does the thinking: summarize deal. Carly picks the right model for the job and you can swap models per step if you need to.
- 5 Action Text you
Carly texts you the result over SMS. You can reply back and the conversation continues.
When to use this template
- You want this work to happen consistently without anyone remembering to do it.
- You're already using tools Carly connects to, and the manual version of this is eating real minutes a week.
- You want a visible canvas you can audit and edit — not a black-box agent doing things you can't see.
When not to use it
- This task only happens once or twice a month — the setup cost won't pay back.
- The decision in the middle of the flow needs human judgment every single time, not just on edge cases.
- Your stack doesn't include any of the apps above and you don't want to wire a generic HTTP step.
Build it in 10 minutes — copy this prompt
Paste this in an email to and Carly will build the workflow for you.
Hey Carly — please build me this workflow. Name: Flight price watcher → SMS when it drops What it should do: Tell Carly your route and target price — she monitors fares hourly and texts you the moment something drops below the threshold. Steps: 1. Trigger: Hourly check (cron) 2. HTTP: Fetch fares 3. Filter: Below threshold 4. LLM: Summarize deal 5. Action: Text you (SMS) Tools to wire up: (your call — pick the right ones) Set it live once you've got it working. Thanks!
Questions teams ask before building this
How long does this workflow take to set up?
Most teams have "Flight price watcher → SMS when it drops" running in under 10 minutes. Copy the prompt on this page into an email to carly@usecarly.com and Carly wires the workflow together for you, including authenticating the tools you need.
Can I edit this template after Carly builds it?
Yes. Every workflow lives on the Carly canvas where you can rename steps, change conditions, swap LLM models, add filters, and re-route branches. Templates are starting points, not locked recipes.
What if I use a different tool than the ones in this template?
Carly connects to 200+ tools, plus a generic HTTP node for any API that doesn't have a native integration. Tell Carly your stack when you send the prompt and she'll pick the right connectors.
Does this run automatically once it's built?
Yes. The trigger at the start of the workflow fires automatically — on a schedule, on an inbound email, on a webhook, on a calendar event, whatever this template specifies. Carly handles the listening; you only step in when a step is gated on you.
Ready to run Flight price watcher → SMS when it drops?
Carly will build it for you and you'll be up and running in 10 minutes.
Build it in Carly