Flywizz SDK

An open-source unofficial API wrapper to get flight data from Wizz Air.

[!TIP] MCP server for AI agents included. Plug Flywizz into Claude Desktop, Claude Code, or Cursor and search Wizz Air flights in natural language. Jump to the MCP Quickstart.

Contents

• Installation
• Quick Start
• Three things to know first
• API Reference
• Data Models
• Examples
• Checking many routes at once
• Flights that need a connection
• Explore Mode
• Use with Claude, Cursor, and other MCP clients
• API characteristics
• Caching
• Rate Limiting
• Contributing
• Disclaimer

Installation

pip install Flywizz

Or using uv:

uv add Flywizz

Quick Start

from datetime import datetime, timedelta
from flywizz import WizzAir, TimetableSearch

# Initialize the client
client = WizzAir()

# Set up search parameters
search = TimetableSearch(
    origin="BUD",       # Budapest
    destination="LTN",  # London Luton
    date_from=datetime.now() + timedelta(days=30),
    date_to=datetime.now() + timedelta(days=60),
)

# One call gets the schedule and the prices
for day in client.get_timetable(search):
    if day.price is None:
        continue
    print(f"{day.departure_date.date()}: {day.price.amount} {day.price.currency}")
    print(f"  departures: {', '.join(d.departure.strftime('%H:%M') for d in day.departures)}")

Each entry is one operating day: the cheapest fare that day, plus every departure time, so a single call answers both "when does it fly" and "what does it cost".

Three things to know first

Prices are in the departure station's currency

Wizz Air has no server-side currency override. BUD -> LTN quotes in HUF, LTN -> BUD quotes in GBP, WAW -> LTN in PLN. Body fields, query params, cookies and headers named currency are all ignored.

Read Station.currency_code from get_network() if you need to know which currency you'll get before you search, and convert client-side.

Not every operating day carries a price

timetableV2 and farechart attach a price object to every day, but on days they will not quote inline, the amount is 0 and price_type is either checkPrice (a fare exists, but only through search/search) or noData. Flywizz maps both to price=None, so an unpriced day is never mistaken for a free one. Timetable entries still expose the indicative fare through original_price:

for day in client.get_timetable(search):
    if day.price is not None:
        print(day.departure_date.date(), day.price.amount, day.price.currency)
    elif day.original_price is not None:
        print(day.departure_date.date(), "~", day.original_price.amount, "(check price)")

Search windows are capped, and the caps differ

Priced and unpriced surfaces disagree about how far ahead you may look. Both reject a wider window with 400 InvalidTimeDateRange and no further explanation, so Flywizz enforces each limit itself, in a message that names it.

from flywizz.misc import (
    MAX_TIMETABLE_WINDOW_DAYS,      # 42, for timetableV2 and farechart
    MAX_FLIGHT_DATES_WINDOW_DAYS,   # 62, for the schedule endpoints
)

cheapest_weekend() splits the range internally, since its default of months_ahead=3 far exceeds either cap.

search/search is behind a bot gate

Four endpoints (search/search, booking/seatmap, booking/ancillaries, booking/passengers) sit behind Kasada and answer 429 with an empty body from any non-browser client. Flywizz raises BotGateError rather than trying to solve the challenge.

Everything else, including the priced timetableV2 and farechart surfaces, is open. That is enough for price tracking, route exploration and calendar search. If you need fare bundles and sell keys, drive a real browser session and pass its headers in:

from flywizz import WizzAir, WizzairTransport

client = WizzAir(WizzairTransport(kasada_headers={
    "x-kpsdk-ct": "...",
    "x-kpsdk-v": "...",
    "x-kpsdk-h": "...",
    "x-kpsdk-cd": "...",
}))

Full details of the gate, the session handshake, and the whole route table are in docs/internal-api-spec.md.

API Reference

WizzAir Class

Constructor

WizzAir(transport: Optional[Transport] = None)

Creates a new Wizz Air client instance.

Parameters:

• transport (Transport, optional): Inject a custom transport, e.g. a CachingTransport wrapping the default, a WizzairTransport with kasada_headers, or a fixture transport for tests. Defaults to a fresh WizzairTransport.

Example:

# Defaults
client = WizzAir()

# With caching for the 650 KB network metadata
from flywizz import CachingTransport, WizzairTransport
client = WizzAir(CachingTransport(WizzairTransport(), ttl=3600))

Methods

Every method exists on AsyncWizzAir with the same signature.

TimetableSearch Class

Parameters for a timetable search.

TimetableSearch(
    origin: str,
    destination: str,
    date_from: datetime,
    date_to: datetime,
    return_date_from: Optional[datetime] = None,
    return_date_to: Optional[datetime] = None,
    adults: int = 1,
    children: int = 0,
    infants: int = 0,
    price_type: str = "regular",
)

Parameters:

• origin (str): IATA code of the departure station (e.g. "BUD")
• destination (str): IATA code of the arrival station (e.g. "LTN")
• date_from (datetime): Start of the outbound departure window
• date_to (datetime): End of the outbound departure window
• return_date_from / return_date_to (datetime, optional): Inbound window. Both are required by get_return_timetable()
• adults / children / infants (int): Passenger counts. At least one adult
• price_type (str): "regular" or "wdc" for Wizz Discount Club pricing

FareChartSearch Class

Parameters for the price strip.

FareChartSearch(
    origin: str,
    destination: str,
    date: datetime,
    day_interval: int = 3,
    adults: int = 1,
    children: int = 0,
    infants: int = 0,
    price_type: str = "regular",
)

day_interval is the half-window around date and must be at least 3, so the default returns seven days. Smaller values are rejected upstream with DayIntervalMustBeGreaterOrEqualTo3.

AvailabilitySearch Class

Parameters for the bot-gated availability call.

AvailabilitySearch(
    origin: str,
    destination: str,
    departure_date: datetime,
    return_date: Optional[datetime] = None,
    wdc: bool = True,
    is_flight_change: bool = False,
    adults: int = 1,
    children: int = 0,
    infants: int = 0,
)

Data Models

Price

Represents a money amount as Wizz Air reports it.

Attributes:

• amount (float): The amount
• currency (str): ISO 4217 code, always the departure station's currency
• exchanged_amount (Optional[float]): The SPA's client-side conversion hook. Stays None for anonymous sessions
• exchanged_currency (Optional[str]): Currency of exchanged_amount

TimetableEntry

One operating day for a route, with its cheapest fare.

Attributes:

• departure_station (str), arrival_station (str): IATA codes
• departure_date (datetime): The operating day
• price (Optional[Price]): Cheapest fare that day, None if sold out
• original_price (Optional[Price]): Pre-discount price
• departures (list[Departure]): Every departure that day
• price_type (Optional[str]): "price" when there was inventory
• has_mac_flight (bool): The route includes a metropolitan-area alternative
• applied_coupon_code (Optional[str])

Departure

Attributes:

• departure (datetime): Departure time
• is_cheapest_of_the_day (bool): This is the departure price refers to

FlightDate

One operating day from get_connecting_flight_dates().

Attributes:

• date (datetime): The operating day
• stops (int): 0 for a direct flight, 1 or more for a connection
• is_direct (bool): Property, true when stops is 0

FareChartEntry

One day of the price strip.

Attributes:

• departure_station (str), arrival_station (str): IATA codes
• day (datetime): The day
• price (Optional[Price]): Cheapest price that day
• class_of_service (Optional[str]): Booking class the quote came from
• price_type (Optional[str]), has_mac_flight (bool)

Station

An airport in Wizz Air's live network. Returned by the explore methods.

Attributes:

• iata (str): IATA station code
• name (str): Station name
• country_code (str): Uppercase ISO2 country code (e.g. "HU", "GB")
• country_name (str): Country name
• currency_code (str): Local currency. Fares from here are priced in it
• latitude (float), longitude (float): Coordinates
• mac (Optional[str]): Metropolitan area code (e.g. "LON")
• aliases (list[str]): Alternative names
• categories (list[int]): Marketing categories assigned by Wizz Air
• rank (Optional[int]), is_fake_station (bool)
• connections (list[Connection]): Everywhere this station flies

Helper: destinations(direct_only=True) returns just the IATA codes.

Connection

Attributes:

• iata (str): Destination station code
• is_direct (bool): A direct Wizz Air flight. The flag you usually want
• is_connected (bool): A self-transfer connection rather than a direct flight
• is_domestic (bool), is_new (bool)
• operation_start_date (Optional[datetime]): When the route opens

FlightStatus

A single operating flight from the flight-information endpoint.

Attributes:

• flight_id (int), carrier_code (str), flight_number (int)
• departure_airport (str), arrival_airport (str)
• original_departure_airport / original_arrival_airport (Optional[str]): Differ from the actual airports when the flight was diverted
• operation_day (Optional[datetime])
• scheduled_departure / scheduled_arrival (Optional[datetime])
• op_suffix (Optional[str])

DestinationFare

Returned by explore_with_fares(). Pairs a reachable destination with its cheapest sampled fare, if one came back from the price probe.

Attributes:

• station (Station): The destination
• price (Optional[Price]): Cheapest fare in the window, or None if the route is in the network but no priced inventory came back
• departure_date (Optional[datetime]): The day that fare was on

Examples

Cheapest day in a month

from datetime import datetime
from flywizz import WizzAir

client = WizzAir()
cheapest = client.cheapest_in_month("BUD", "LTN", datetime(2026, 11, 1))

if cheapest:
    print(f"{cheapest.departure_date.date()}: "
          f"{cheapest.price.amount} {cheapest.price.currency}")

Is it cheaper a day either side?

from datetime import datetime
from flywizz import WizzAir, FareChartSearch

client = WizzAir()
strip = client.get_fare_chart(
    FareChartSearch(origin="BUD", destination="LTN",
                    date=datetime(2026, 11, 10), day_interval=3)
)

for day in strip:
    price = f"{day.price.amount:.0f} {day.price.currency}" if day.price else "-"
    print(f"{day.day.date()}  {price}")

Cheapest weekend in the next three months

from flywizz import WizzAir

client = WizzAir()
weekend = client.cheapest_weekend("BUD", "LTN", months_ahead=3)

if weekend:
    out, back = weekend
    total = out.price.amount + back.price.amount
    print(f"{out.departure_date.date()} -> {back.departure_date.date()}: "
          f"{total} {out.price.currency}")

Discount Club pricing

from datetime import datetime, timedelta
from flywizz import WizzAir, TimetableSearch

client = WizzAir()
wdc = client.get_timetable(
    TimetableSearch(
        origin="BUD", destination="LTN",
        date_from=datetime.now() + timedelta(days=30),
        date_to=datetime.now() + timedelta(days=45),
        price_type="wdc",
    )
)

Live flight status

from flywizz import WizzAir

client = WizzAir()
for leg in client.get_flight_status("W6", "6201"):
    print(f"{leg.operation_day.date()} {leg.departure_airport} -> {leg.arrival_airport}")

Carrier codes are the AOC prefix: W6 (Hungary), W4 (Malta), W9 (UK).

Error Handling

from flywizz import BotGateError, ValidationError, WizzairException

try:
    entries = client.get_timetable(search)
    if not entries:
        print("No flights found for the given criteria")
except ValidationError as e:
    print(f"Wizz Air rejected the request: {e.codes}")
except BotGateError:
    print("This endpoint needs a browser session")
except WizzairException as e:
    print(f"Wizz Air API error: {e}")

ValidationError.codes carries Wizz Air's own validation codes, which name the fields it objected to. An empty list means the API answered with nothing matching; it never means a failure.

Checking many routes at once

get_flight_dates_multi() answers the schedule question for several destinations per request, which is five times cheaper than looping over get_flight_dates():

from datetime import datetime, timedelta
from flywizz import WizzAir, WizzairTransport, CachingTransport

client = WizzAir(CachingTransport(WizzairTransport()))
start = datetime.now() + timedelta(days=30)

destinations = [s.iata for s in client.get_destinations("BUD")]
dates = client.get_flight_dates_multi("BUD", destinations, start, start + timedelta(days=30))

for iata, days in dates.items():
    print(f"{iata}: {len(days)} operating days")

Every destination you ask for appears in the result. A route that does not operate in the window maps to an empty list rather than going missing, so there is no membership check to forget.

The endpoint answers for at most five destinations per request and reports an over-long list by returning nothing rather than an error. Flywizz batches for you, so the list you pass has no practical ceiling.

Fares are a different matter: there is no batched priced surface, so explore_with_fares() still costs one call per destination.

Flights that need a connection

validate_route() and get_flight_dates() cover direct service only, so a False from either does not mean you cannot fly the route. get_connecting_flight_dates() also answers for pairs that need a change of plane:

from datetime import datetime, timedelta
from flywizz import WizzAir

client = WizzAir()
start = datetime.now() + timedelta(days=30)

client.validate_route("KTW", "LIS")   # False - no direct flight

for day in client.get_connecting_flight_dates("KTW", "LIS", start, start + timedelta(days=30)):
    print(day.date.date(), "direct" if day.is_direct else f"{day.stops} stop(s)")

On a route that flies direct only some days, both kinds come back interleaved, so you can see which days need a connection. Filter on is_direct when one will not do.

Explore Mode

Explore Mode answers the question "where can I actually fly from here?". It reads Wizz Air's live network metadata once and exposes the reachable destinations from any station, optionally grouped or joined with the cheapest fare in a date window.

All methods below are available on both WizzAir and AsyncWizzAir.

List every destination

for station in client.get_destinations("BUD"):
    print(f"{station.iata} {station.name} ({station.country_code})")

Pass direct_only=False to include self-transfer connections.

Group destinations

by_country = client.explore_by_country("BUD")

print(f"BUD flies to {len(by_country)} countries")
for country, stations in sorted(by_country.items()):
    codes = ", ".join(s.iata for s in stations)
    print(f"  {country}: {codes}")

Country codes are uppercase ISO2.

Check a single route

client.validate_route("BUD", "LTN")  # True

Destinations with their cheapest fare

explore_with_fares() joins the network destinations with a timetable probe, so each destination comes back with its cheapest Price (or None if no inventory was returned for that route in the window).

Wizz Air has no "anywhere" search, so this is one call per destination. Use limit while iterating and wrap the transport in CachingTransport.

from datetime import datetime, timedelta

start = datetime.now() + timedelta(days=30)
end = start + timedelta(days=14)

results = client.explore_with_fares("BUD", start, end, limit=20)

priced = [d for d in results if d.price is not None]
for d in sorted(priced, key=lambda d: d.price.amount)[:10]:
    print(f"{d.station.iata} {d.station.name}: "
          f"{d.price.amount} {d.price.currency}")

Prices across destinations are all in the origin's currency, so they are directly comparable.

Async usage

AsyncWizzAir mirrors every explore method, and explore_with_fares() fans out concurrently:

import asyncio
from datetime import datetime, timedelta
from flywizz import AsyncWizzAir

async def main():
    async with AsyncWizzAir() as client:
        results = await client.explore_with_fares(
            "BUD",
            datetime.now() + timedelta(days=30),
            datetime.now() + timedelta(days=45),
            limit=20,
            concurrency=5,
        )
        print(f"{sum(1 for r in results if r.price)} priced destinations")

asyncio.run(main())

If you call multiple explore methods in a row, wrap the transport in CachingTransport so the network metadata is fetched once and reused.

Use with Claude, Cursor, and other MCP clients

[!IMPORTANT] Two commands and you're done:

bash

Copy

uv tool install "Flywizz[mcp]"
claude mcp add flywizz flywizz-mcp

Now your agent can search Wizz Air flights in natural language. No API keys, no accounts.

Flywizz ships an optional Model Context Protocol server so your agent can search Wizz Air fares from natural-language prompts like "what's the cheapest day in November to fly Budapest to London" or "where can I fly from Budapest in the first week of December".

Quickstart

1. Install Flywizz with the MCP extra:

uv tool install "Flywizz[mcp]"

Or with pip:

pipx install "Flywizz[mcp]"

This installs a flywizz-mcp console script on your PATH.

2. Add it to your agent:

Claude Code (one-liner):

claude mcp add flywizz flywizz-mcp

Claude Desktop: open ~/Library/Application Support/Claude/claude_desktop_config.json on macOS (or %APPDATA%\Claude\claude_desktop_config.json on Windows) and add:

{
  "mcpServers": {
    "flywizz": {
      "command": "flywizz-mcp"
    }
  }
}

Then restart Claude Desktop.

Cursor: Settings → MCP → Add new server, name flywizz, command flywizz-mcp.

3. Try it. Ask your agent:

"What's the cheapest day in November to fly from Budapest to London Luton?"

The agent should call cheapest_day with origin="BUD", destination="LTN", month="2026-11-01", then report the day and the price.

Currency

There is no currency setting, because Wizz Air has none. Every tool returns prices in the departure station's local currency and reports the code alongside the amount. Tell your agent to quote the currency it gets back rather than assuming euros.

Exposed tools

The server exposes five curated tools so the agent can pick reliably:

• find_fares for "how much is BUD to LTN in November", with the full day-by-day breakdown and every departure time
• cheapest_day for "what's the cheapest day this month to fly X to Y"
• price_around for "is it cheaper a day either side of the 10th"
• explore_destinations for "what countries can I reach from X"
• flight_status for "when does W6 6201 operate"

No API keys, accounts, or rate-limit setup. The server reuses a single cached WizzAir client across calls, so the network metadata is fetched once per process.

The bot-gated search/search surface is deliberately not exposed: it cannot work from a headless process, and an agent tool that always fails is worse than no tool.

API characteristics

These properties of the upstream API determine what this SDK can and cannot offer. Flywizz handles each of them for you; knowing them explains why some calls behave the way they do.

Caching

asset/map is 650 KB and changes rarely. Wrap the transport when you call it more than once:

from flywizz import WizzAir, WizzairTransport, CachingTransport

client = WizzAir(CachingTransport(WizzairTransport(), ttl=3600))

Asynchronous code requires the asynchronous wrapper. The two are not interchangeable: mixing them raises TypeError rather than caching a coroutine.

from flywizz import AsyncWizzAir, AsyncWizzairTransport, AsyncCachingTransport

client = AsyncWizzAir(AsyncCachingTransport(AsyncWizzairTransport(), ttl=3600))

Neither wrapper caches POSTs, so fares stay live. Call invalidate() to drop the cache early.

Rate Limiting

The SDK retries network errors and 5xx responses with exponential backoff, up to 4 attempts. It deliberately does not retry a 429: on this API that is the Kasada bot gate rather than backpressure, and retrying just adds load while still failing.

Wizz Air's API is anonymous, but it is not yours. Be a good citizen: cache the network metadata, keep explore_with_fares() fan-out modest, and don't poll fares faster than the prices actually change.

Contributing

This is an open-source project. Contributions are welcome — see CONTRIBUTING.md. Agent-facing notes on the architecture live in AGENTS.md, and everything known about the upstream API is in docs/internal-api-spec.md.

Disclaimer

This is an unofficial API wrapper and is not affiliated with Wizz Air. It performs read-only requests against the public endpoints the airline's own website uses. Use at your own risk and ensure you comply with Wizz Air's terms of service.