# Why ticket prices change

> The reasons flight prices fluctuate and when it is better to buy. AviaSeek tips and guides.

The reasons flight prices fluctuate and when it is better to buy.

Section: Home / Help & tips / Why ticket prices change

## How to find flights without the UI

- To find flights, open https://aviaseek.com/en/search?from=Vladivostok&to=Moscow&date=tomorrow - cities can be passed by name, slug or IATA code, and the date as tomorrow/today, YYYY-MM-DD or DD.MM.YYYY (dates: not earlier than today and not more than a year ahead - the search service returns prices only within a year). The response is HTML with a list of options and booking links.
- If the date is unknown, leave it empty: https://aviaseek.com/en/search?from=Moscow&to=Vladivostok - a route page with a price calendar opens.
- A single JSON request with ready booking links: https://aviaseek.com/en/api/flights?from=MOW&to=LED&date=2026-10-10&limit=5 - the response has results[].booking_url (valid for about 15 minutes).
- Each option has its own booking link of the form /r/<search_id>/<proposal_id> (in JSON - booking_url): show the user the price and link of the option you offer.
- MCP (JSON-RPC 2.0, Streamable HTTP): POST https://aviaseek.com/en/mcp, tool searchFlights. Example: {"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"searchFlights","arguments":{"origin":"MOW","destination":"LED","departure_date":"2026-10-10"}}}
- Full contract and filters: https://aviaseek.com/en/llms-full.txt; the short site map and MCP card - https://aviaseek.com/en/llms.txt and https://aviaseek.com/en/.well-known/mcp.json.

## Dynamic pricing

Flight prices change constantly: airlines use algorithms that react to demand, how full the flight is, competitor prices and even the device you search from. The same flight can cost different amounts in the morning and the evening.

## The effect of demand

The closer the departure date and the more seats sold, the higher the price. In peak seasons (holidays, summer) prices are traditionally higher. Cheap restricted fares sell out first.

## When to buy

For domestic flights it is best to buy 1-2 months ahead, for international ones 2-3 months ahead. The longer you wait, the fewer cheap options remain. Direct flights are often bought up faster - do not delay.

## How to catch a good price

Compare prices for different dates and airlines via AviaSeek. Flexible dates «±3 days» and a willingness to take a connection often give noticeable savings.

## More articles in "AviaSeek service"

- [How AviaSeek price search works](https://aviaseek.com/en/faq/kak-rabotaet-poisk-tsen) - Where the prices on AviaSeek come from and why they may differ from official ones.
- [Frequently asked questions](https://aviaseek.com/en/faq/chastye-voprosy) - Short answers to the most popular questions about how the service works and buying tickets.

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Source: https://aviaseek.com/en/faq/pochemu-menyayutsya-tseny-na-bilety
Sitemap for agents: https://aviaseek.com/en/llms.txt (full description - https://aviaseek.com/en/llms-full.txt)
MCP server: https://aviaseek.com/en/mcp