# Changing a flight ticket

> How to change the date or route on a purchased ticket and how much it costs.

How to change the date or route on a purchased ticket and how much it costs.

Section: Home / Help & tips / Changing a flight ticket

## 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.

## What a change is

A change is modifying the date, time, route or name on an already purchased ticket. Whether a change is possible and its cost are set by the fare: some fares allow changes for a fee, others not at all.

## How it works

Usually, when changing you pay the price difference between the old and new ticket plus a change fee. If the new ticket is cheaper, the difference is usually not refunded - check the fare terms.

## When changing is worth it

A change is better value if the new ticket is not much more expensive than the old one and the change fee is small. In some cases it is easier to return the ticket (if the fare is refundable) and buy a new one.

## More articles in "Refunds & exchanges"

- [Refunding a flight ticket](https://aviaseek.com/en/faq/vozvrat-aviabileta) - How to refund a flight ticket, when it is possible and how much money you get back.

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Source: https://aviaseek.com/en/faq/obmen-aviabileta
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