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Airfare Brain

Airfare Brain v1.0.5

True flight cost with bags

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From the developer

Declared capabilities

  • True cost of a fare with bags and seats
  • Compare airlines once bags are added
  • Online vs airport prices

Declared limitations

  • Booking and payment are out of scope
  • Airline not covered
  • Out of scope: hotels

Not specified in the available declarations: pricing & account requirements.

Onboarding example

I found a Ryanair return for €39. What will it cost with a 20kg bag?
Sources & dates

Developer declarations; not independently tested. Listing last checked Nov 6, 2026. Package observed Nov 6, 2026.

View package source →

Description

From the marketplace listing

Airfare Brain gives the true cost of a flight once the extras are added: bags, seats, priority boarding, airport check-in, changes and payment fees, on 29 airlines in Europe and North America, including Ryanair, easyJet, Wizz Air, Jet2, British Airways, Lufthansa, KLM, Air France, Iberia, Turkish Airlines, Delta and United. Every price is taken from the airline's own fee pages and returned with its source link and the date it was checked. Where an airline publishes no price, the answer says so (or gives a figure labelled with the third party that reported it); an unknown fee is never counted as free. Ask it to: - add the bags and seats you want to a fare you found, for the whole party and both flights; - compare airlines once bags are included (the cheapest fare is often not the cheapest trip); - show what an extra costs online versus at the airport; - price a whole trip into one airport, including what car hire there really costs (from its sister site, Car Rental Brain). Read-only, no account, nothing personal requested. It has no live fares and never books: give it the fare from any flight search. The airfarebrain.com website's flight search links to Kiwi.com through an affiliate programme; the tools themselves return fee data only. Limitations: published ranges, not quotes for a specific flight; airlines change fees, so each answer carries the date it was checked.

Language: English · Automatically detected from descriptions.

Changes

No changes recorded yet. Follow this plugin to keep track of future changes.

First seen Nov 6, 2026. Last seen Nov 6, 2026.

Keywords

Files & skills

File archives

Plugin package4 files · 25.7 KBBrowse files →

Release notes

First release: five read-only tools over Airfare Brain's sourced, dated fee data for 29 airlines.

Declared in the saved package. Remote tools may change independently.

Package details

Publisher declarations from the archived package. These are separate from our research and the live service's terms.

Package author
Airfare Brain
Keywords
See keywords
Commerce declaration
Does not support commerceThis does not establish whether access is free or paid.
Review scenarios
5 positive · 3 negativeScenario counts, not test results.

Declared capabilities

  • True cost of a fare with bags and seats
  • Compare airlines once bags are added
  • Online vs airport prices
  • Bag sizes and what's included
  • Whole trip with car hire at the airport
  • Every price sourced and dated

Package observed Nov 6, 2026.

Technical details
First seen
Nov 6, 2026 · 12:00 UTC
Last seen
Nov 6, 2026 · 18:00 UTC
Collection status
Collected

plugin_asdk_app_6adfd901c7208191aec5d7e27f5112d0

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