Checks one route against your price target each day and emails you once, when the fare first drops below it.
Uses
Gmail
Email me when a flight fare drops below my target
Run every day.Run every day.
Set fareApiUrl to blank.Set fareApiUrl to blank.Set fareApiToken to blank.Set fareApiToken to blank.Set originAirport to blank.Set originAirport to blank.Set destinationAirport to blank.Set destinationAirport to blank.Set departureDate to blank.Set departureDate to blank.Set returnDate to blank.Set returnDate to blank.Set targetPrice to 0.Set targetPrice to 0.Set currencyCode to USD.Set currencyCode to USD.Set alertEmailAddress to blank.Set alertEmailAddress to blank.Set priceTarget to 0.Set priceTarget to 0.
If a step below fails, save the error as targetPriceErrorIf a step below fails, save the error as targetPriceErrorTry
Round targetPrice to 2 decimal places and save it as priceTarget.Round targetPrice to 2 decimal places and save it as priceTarget.On error
Stop and report a problem: Put the most you are willing to pay into the 'targetPrice' step as a plain number - 450, not $450 or 1,450 - then run it again.Stop and report a problem: Put the most you are willing to pay into the 'targetPrice' step as a plain number - 450, not $450 or 1,450 - then run it again.
If priceTarget is less than or equal to 0If priceTarget is less than or equal to 0Yes
Stop and report a problem: The 'targetPrice' step is still 0, so no fare could ever count as a drop. Set it to the most you are willing to pay, then run it again.Stop and report a problem: The 'targetPrice' step is still 0, so no fare could ever count as a drop. Set it to the most you are willing to pay, then run it again.No
No steps
Set daysUntilDeparture to 0.Set daysUntilDeparture to 0.If a step below fails, save the error as departureDateErrorIf a step below fails, save the error as departureDateErrorTry
Count the days from today's date to departureDate and save it as daysUntilDeparture.Count the days from today's date to departureDate and save it as daysUntilDeparture.On error
Stop and report a problem: The 'departureDate' step is not a date this workflow can read. Write it as 2026-11-14, then run it again.Stop and report a problem: The 'departureDate' step is not a date this workflow can read. Write it as 2026-11-14, then run it again.If daysUntilDeparture is less than 0If daysUntilDeparture is less than 0Yes
Finish the run: The date in the 'departureDate' step has already passed, so there is nothing left to watch on this route. Set a new date to start watching again.Finish the run: The date in the 'departureDate' step has already passed, so there is nothing left to watch on this route. Set a new date to start watching again.No
No steps
Set routeLabel to originAirport to destinationAirport.Set routeLabel to originAirport to destinationAirport.Set watchTag to Fare watch originAirport-destinationAirport departureDate.Set watchTag to Fare watch originAirport-destinationAirport departureDate.Set underTargetMarker to fare is under your target.Set underTargetMarker to fare is under your target.Set aboveTargetMarker to fare is back above your target.Set aboveTargetMarker to fare is back above your target.Set fareSearch to a record of origin, destination, departure date, and currency.Set fareSearch to a record of origin, destination, departure date, and currency.Set returnLine to blank.Set returnLine to blank.If returnDate isn't blankIf returnDate isn't blankYes
Change fareSearch to a record of origin, destination, departure date, and 2 more.Change fareSearch to a record of origin, destination, departure date, and 2 more.Change returnLine to Returning: returnDateChange returnLine to Returning: returnDate
.No
No steps
Set fareResponse to an empty record.Set fareResponse to an empty record.If a step below fails, save the error as fareApiErrorIf a step below fails, save the error as fareApiErrorTry
Fetch fareApiUrl and save it as fareResponse.Fetch fareApiUrl and save it as fareResponse.On error
Stop and report a problem: The fare search did not answer, so no fare was checked. Check the address in the 'fareApiUrl' step and the key in the 'fareApiToken' step. The endpoint said: fareApiError as text.Stop and report a problem: The fare search did not answer, so no fare was checked. Check the address in the 'fareApiUrl' step and the key in the 'fareApiToken' step. The endpoint said: fareApiError as text.Set offers to fareResponse.body.offers.Set offers to fareResponse.body.offers.Set offerCount to 0.Set offerCount to 0.If a step below fails, save the error as fareShapeErrorIf a step below fails, save the error as fareShapeErrorTry
Count the items in offers and save it as offerCount.Count the items in offers and save it as offerCount.On error
Stop and report a problem: The fare search answered in a shape this workflow cannot read. The endpoint in the 'fareApiUrl' step has to answer with a JSON object holding a list called 'offers', and each offer needs a number in 'price'.Stop and report a problem: The fare search answered in a shape this workflow cannot read. The endpoint in the 'fareApiUrl' step has to answer with a JSON object holding a list called 'offers', and each offer needs a number in 'price'.If offerCount is 0If offerCount is 0Yes
Finish the run: No fares came back for routeLabel on departureDate, so there was nothing to compare with your target.Finish the run: No fares came back for routeLabel on departureDate, so there was nothing to compare with your target.No
No steps
Set bestPrice to 0.Set bestPrice to 0.Set bestOffer to an empty record.Set bestOffer to an empty record.Set pricedOffers to 0.Set pricedOffers to 0.Set skippedOffers to 0.Set skippedOffers to 0.
For each offer in offers:For each offer in offers:Set offerPrice to 0.Set offerPrice to 0.Set offerHasPrice to false.Set offerHasPrice to false.If a step below fails, save the error as offerPriceErrorIf a step below fails, save the error as offerPriceErrorTry
Round offer.price to 2 decimal places and save it as offerPrice.Round offer.price to 2 decimal places and save it as offerPrice.Change offerHasPrice to true.Change offerHasPrice to true.On error
Add 1 to skippedOffers.Add 1 to skippedOffers.If offerHasPrice is yesIf offerHasPrice is yesYes
If pricedOffers is 0 or offerPrice is less than bestPriceIf pricedOffers is 0 or offerPrice is less than bestPriceYes
Change bestPrice to offerPrice.Change bestPrice to offerPrice.Change bestOffer to offer.Change bestOffer to offer.No
No steps
Add 1 to pricedOffers.Add 1 to pricedOffers.No
No steps
If skippedOffers is greater than 0If skippedOffers is greater than 0Yes
Show in the output: Skipped skippedOffers offer(s) that carried no usable price. Each offer needs a number in 'price'.Show in the output: Skipped skippedOffers offer(s) that carried no usable price. Each offer needs a number in 'price'.No
No steps
If pricedOffers is 0If pricedOffers is 0Yes
Stop and report a problem: The fare search returned offerCount offer(s) but none of them carried a number in 'price', so no fare could be compared with your target.Stop and report a problem: The fare search returned offerCount offer(s) but none of them carried a number in 'price', so no fare could be compared with your target.No
No steps
Set airlineLine to blank.Set airlineLine to blank.If a step below fails, save the error as airlineErrorIf a step below fails, save the error as airlineErrorTry
Trim bestOffer.airline and save it as airlineText.Trim bestOffer.airline and save it as airlineText.If airlineText isn't emptyIf airlineText isn't emptyYes
Change airlineLine to Airline: airlineTextChange airlineLine to Airline: airlineText
.No
No steps
On error
Change airlineLine to blank.Change airlineLine to blank.Set bookingLine to blank.Set bookingLine to blank.If a step below fails, save the error as bookingLinkErrorIf a step below fails, save the error as bookingLinkErrorTry
Trim bestOffer.link and save it as linkText.Trim bestOffer.link and save it as linkText.If linkText isn't emptyIf linkText isn't emptyYes
Change bookingLine to Book here: linkTextChange bookingLine to Book here: linkText
.No
No steps
On error
Change bookingLine to blank.Change bookingLine to blank.GmailList emails matching 'subject:@watchTag'. Save it as priorAlerts.List emails matching 'subject:@watchTag'. Save it as priorAlerts.Set priorMessages to priorAlerts.emails.Set priorMessages to priorAlerts.emails.Set priorAlertCount to 0.Set priorAlertCount to 0.If a step below fails, save the error as alertHistoryErrorIf a step below fails, save the error as alertHistoryErrorTry
Count the items in priorMessages and save it as priorAlertCount.Count the items in priorMessages and save it as priorAlertCount.On error
Stop and report a problem: Could not read your mailbox to see what this watch has already reported, so nothing was sent rather than risk repeating an alert. Reconnect Gmail and run it again.Stop and report a problem: Could not read your mailbox to see what this watch has already reported, so nothing was sent rather than risk repeating an alert. Reconnect Gmail and run it again.Set newestAlertSubject to blank.Set newestAlertSubject to blank.If priorAlertCount is greater than 0If priorAlertCount is greater than 0Yes
If a step below fails, save the error as alertSubjectErrorIf a step below fails, save the error as alertSubjectErrorTry
Trim the first item of priorMessages.subject and save it as newestAlertSubject.Trim the first item of priorMessages.subject and save it as newestAlertSubject.On error
Change newestAlertSubject to blank.Change newestAlertSubject to blank.No
No steps
Check whether newestAlertSubject contains underTargetMarker and save it as alreadyReported.Check whether newestAlertSubject contains underTargetMarker and save it as alreadyReported.Set fareIsUnderTarget to bestPrice is less than or equal to priceTarget.Set fareIsUnderTarget to bestPrice is less than or equal to priceTarget.If fareIsUnderTarget is yes and alreadyReported is noIf fareIsUnderTarget is yes and alreadyReported is noYes
GmailSend an email to alertEmailAddress.Send an email to alertEmailAddress.
Subject: watchTag - underTargetMarkerA fare on this route has dropped below your target.
Route: routeLabel
Leaving: departureDate
returnLineCheapest fare found: currencyCode bestPrice formatted as a number with thousands separators with 2 decimal places
Your target: currencyCode priceTarget formatted as a n...Else if @alreadyReported is yes and @fareIsUnderTarget is no
GmailSend an email to alertEmailAddress.Send an email to alertEmailAddress.
Subject: watchTag - aboveTargetMarkerThe fare you were told about has gone back above your target.
Route: routeLabel
Leaving: departureDate
returnLineCheapest fare now: currencyCode bestPrice formatted as a number with thousands separators with 2 decimal places
Your target: currencyCode priceTarget formatte...Otherwise
Show in the output: Cheapest fare for routeLabel on departureDate is currencyCode bestPrice formatted as a number with thousands separators with 2 decimal places against a target of currencyCode priceTarget formatted as a number with thousands separators with 2 decimal places. Nothing has changed since the last email, so none was sent.Show in the output: Cheapest fare for routeLabel on departureDate is currencyCode bestPrice formatted as a number with thousands separators with 2 decimal places against a target of currencyCode priceTarget formatted as a number with thousands separators with 2 decimal places. Nothing has changed since the last email, so none was sent.