Privacy Statement Copyright Notice Terms and Conditions Fare Rules - The Basics Described here are the basic facts you need to know about fare rules. See the glossary for more complex terms and scenarios. Using booking classes, the airlines control how many seats on each flight are available for each fare. Usually the earlier of the two deadlines takes precedence.
Some fares are only valid on particular days of the week, or at particular times.
For overseas travel, usually the departure date determines the season for the round trip fare. Some fare are not valid on certain dates - e.g. over a holiday weekend. Find this date in this section of the rules.