Free, no-login flight search with real-time pricing from multiple airlines.
app.octotrip/flights MCP Server
This MCP server provides a free, no-login flight search that can search and compare flights using real-time pricing from multiple airlines and booking platforms. The server is exposed as a single tool within the MCP ecosystem.
🛠️ Key Features
Free flight search
No-login access
Real-time pricing
Compares results across multiple airlines and booking platforms
🚀 Use Cases
Compare flight options for the same route and travel dates
Retrieve up-to-date prices from multiple sources for travel planning
⚡ Developer Benefits
Simplifies integration via MCP (toolCount: 1)
Supports use cases centered on “flight-search” and “real-time pricing”
⚠️ Limitations
Requires no-login usage; the provided information does not describe any authenticated features
Searches live flight offers between an origin and destination for given travel dates. Supports one-way (omit return_date) and round-trip searches with flexible passenger counts and cabin class. Use this when the user wants to compare available flights, airlines, prices, layovers, or booking links for a specific route. Do not use it for rental cars, hotels, trains, or general travel planning unless the user has flight-search intent. The tool queries external flight aggregator APIs in real time, returns price-ranked results grouped by number of stops, and includes affiliate booking links. Results and booking links are valid for approximately 15 minutes due to real-time airline pricing. It does not book flights, modify reservations, charge users, or store user data.
Parameters10
origin
string
required
Departure city, airport name, or IATA code (e.g. 'Frankfurt', 'JFK', 'London Heathrow').
destination
string
required
Arrival city, airport name, or IATA code.
departure_date
string
required
Departure date. Accepts common formats such as YYYY-MM-DD, DD.MM.YYYY, or natural-language dates.
return_date
any
optional
Return date for round-trip. Omit for one-way flights.
adults
integer
optional
Number of adult passengers (1-9). Defaults to 1.
children
integer
optional
Number of children aged 2-11 (0-9). Defaults to 0.
infants
integer
optional
Number of infants under 2 (0-9). Defaults to 0.
trip_class
string
optional
Cabin class: Y for economy, C for business. Defaults to Y.
currency
string
optional
Preferred ISO 4217 currency code for prices (e.g. EUR, USD, GBP). Defaults to EUR.
locale
string
optional
Preferred language code (e.g. en, de, fr). Defaults to en.
Raw schema
{
"type": "object",
"properties": {
"origin": {
"description": "Departure city, airport name, or IATA code (e.g. 'Frankfurt', 'JFK', 'London Heathrow').",
"title": "Origin",
"type": "string"
},
"destination": {
"description": "Arrival city, airport name, or IATA code.",
"title": "Destination",
"type": "string"
},
"departure_date": {
"description": "Departure date. Accepts common formats such as YYYY-MM-DD, DD.MM.YYYY, or natural-language dates.",
"title": "Departure Date",
"type": "string"
},
"return_date": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Return date for round-trip. Omit for one-way flights.",
"title": "Return Date"
},
"adults": {
"default": 1,
"description": "Number of adult passengers (1-9). Defaults to 1.",
"maximum": 9,
"minimum": 1,
"title": "Adults",
"type": "integer"
},
"children": {
"default": 0,
"description": "Number of children aged 2-11 (0-9). Defaults to 0.",
"maximum": 9,
"minimum": 0,
"title": "Children",
"type": "integer"
},
"infants": {
"default": 0,
"description": "Number of infants under 2 (0-9). Defaults to 0.",
"maximum": 9,
"minimum": 0,
"title": "Infants",
"type": "integer"
},
"trip_class": {
"default": "Y",
"description": "Cabin class: Y for economy, C for business. Defaults to Y.",
"title": "Trip Class",
"type": "string"
},
"currency": {
"default": "EUR",
"description": "Preferred ISO 4217 currency code for prices (e.g. EUR, USD, GBP). Defaults to EUR.",
"title": "Currency",
"type": "string"
},
"locale": {
"default": "en",
"description": "Preferred language code (e.g. en, de, fr). Defaults to en.",
"title": "Locale",
"type": "string"
}
},
"required": [
"origin",
"destination",
"departure_date"
],
"title": "searchArguments"
}
OctoTrip is free to use. Booking links contain affiliate attribution -- OctoTrip may earn a commission at no extra cost to you. Search results are ranked by price within each stop-count group, not by affiliate payout.
Transport: stateless streamable HTTP. Responses use text/event-stream (SSE). No session persistence or resumability. Rate limit: 1 request/second with burst capacity of 5.
Tool: search
Searches live flight offers between an origin and destination for given travel dates. Supports one-way and round-trip searches with flexible passenger counts and cabin class. Returns price-ranked results grouped by number of stops, showing the cheapest options from multiple airlines and booking platforms. The tool queries external flight aggregator APIs in real time and includes affiliate booking links. It does not book flights, modify reservations, charge users, or store user data.
Parameters
Parameter
Type
Required
Default
Description
origin
string
yes
--
Departure city, airport name, or IATA code (e.g. "Frankfurt", "JFK")
destination
string
yes
--
Arrival city, airport name, or IATA code
departure_date
string
yes
--
Departure date (YYYY-MM-DD, DD.MM.YYYY, or natural-language)
return_date
string
no
--
Return date for round-trip. Omit for one-way
adults
integer
no
1
Number of adult passengers (1-9)
children
integer
no
0
Number of children aged 2-11 (0-9)
infants
integer
no
0
Number of infants under 2 (0-9)
trip_class
string
no
"Y"
Cabin class: Y for economy, C for business
currency
string
no
"EUR"
ISO 4217 currency code (EUR, USD, GBP, etc.)
locale
string
no
"en"
Response language code (en, de, etc.)
Response Format
Results are grouped by number of stops with the cheapest options per group:
json
{"results":[{"airline":"Lufthansa","airline_code":"LH","alliance":"Star Alliance","flight_numbers":["LH120","LH121"],"is_direct":true,"stops":0,"total_duration_minutes":110,"outbound":{"departure":"FRA","arrival":"MUC","departure_time":"18:15","arrival_time":"19:10","departure_date":"2026-07-15","arrival_date":"2026-07-15","duration_minutes":55,"stops":0,"legs":[{"flight_number":"LH120","carrier":"Lufthansa","aircraft":"Airbus A319","departure":"FRA","arrival":"MUC","departure_time":"18:15","arrival_time":"19:10","departure_date":"2026-07-15","arrival_date":"2026-07-15","duration_minutes":55}]},"return":{ ... },"price":292.39,"currency":"EUR","baggage":"No checked bag, Cabin bag: 1 piece(s)","gate":"City.Travel","booking_url":"https://...","link_type":"affiliate","affiliate_disclosure":"This link contains affiliate attribution. OctoTrip may earn a commission at no extra cost to you.","tags":["convenient_ticket","direct"]}],"total":6,"total_available":876,"origin_resolved":{"iata":"FRA","name":"Frankfurt Airport","city":"Frankfurt am Main","country_code":"DE"},"destination_resolved":{"iata":"MUC","name":"Munich Airport","city":"Munich","country_code":"DE"},"validity":"Results and booking links are valid for approximately 15 minutes.","query":{ ... }}
Result Validity
Search results and booking links are valid for approximately 15 minutes. Flight prices are determined through a real-time bidding process and are not guaranteed beyond this window. If a user wants to book, they should do so promptly. For stale results, run a new search.
Error Responses
The server returns structured errors with suggestions:
airport_not_found -- airport could not be resolved. Try an IATA code, city name, or airport name.
disambiguation_needed -- multiple airports found (e.g. "New York" returns JFK, LGA). Pick one and retry.
invalid_date -- date format not recognized. Use YYYY-MM-DD, DD.MM.YYYY, or similar.
no_results -- no flights available for the given criteria. Try different dates or a nearby airport.
Example Prompts
Find me the cheapest direct flight from New York to London in August
Compare flights from Frankfurt to Munich on July 15, round-trip returning July 22
I need a one-way flight from LAX to Tokyo next Friday, economy class
Search for 2 adults and 1 child flying from Barcelona to Paris on September 1
What's the cheapest business class flight from Dubai to Singapore this month?
Privacy
This server does not log IP addresses, search queries, or any user-identifiable data. See PRIVACY.md for full details including sample log entries.
