Abstract: A method includes determining a travel itinerary that includes a first segment that is scheduled to arrive at a location at an arrival time and a second segment that is scheduled to depart from the location at a departure time. The method also includes deriving a probability distribution of delays in the arrival time based on an arrival statistical model of the first segment, retrieving a minimum connection time required by a traveler traveling in the first segment to connect to the second segment, and computing a likelihood that the traveler will fail to connect to the second segment based on the probability distribution of delays in the arrival time. Annotations are derived from the computed likelihood and added to the travel itinerary.

Abstract: A query cache for travel planning includes a cache database that stores query results and a cache test mechanism that receives a travel planning query and uses the query to find a result in the cache database and if a result is found returns the result, the result including a set of answers each answer in the set having a flight and a fare useable with the flight.

Abstract: A query cache for travel planning includes a cache database that stores query results and a cache test mechanism that receives a travel planning query and uses the query to find a result in the cache database and if a result is found returns the result, the result including a set of answers each answer in the set having a flight and a fare useable with the flight.

Abstract: A query cache for travel planning includes a cache database that stores query results and a cache test mechanism that receives a travel planning query and uses the query to find a result in the cache database and if a result is found returns the result, the result including a set of answers each answer in the set having a flight and a fare useable with the flight.

Abstract: A query cache for travel planning includes a cache database that stores query results and a cache test mechanism that receives a travel planning query and uses the query to find a result in the cache database and if a result is found returns the result, the result including a set of answers each answer in the set having a flight and a fare useable with the flight.

Abstract: Techniques for dividing a travel query into sub-queries for execution by a travel planning system is described. The techniques can divide the travel query according to some optimization such as by taking query processing difficulty into consideration or loading on the travel planning system.

Abstract: Techniques for processing flexible-date queries are described. Techniques include a interface to enter a flexible date query including a description of a traveler's desired stay at a destination. A user receives a set of solutions that satisfy the flexible date query in the form of a calendar. The set of solutions can be stored in a database for eventual retrieval of a subset of the set of solutions to render to a user.

Abstract: An airline travel planning system is described. The system includes a server computer executing a server process including a search process to search for set of pricing solutions in accordance with at least one destination and at least one origin. The search process represents the set of pricing solutions in the form of a directed acyclic graph. The system also includes a client computer executing a client process on the set of pricing solutions. The client process has a manipulation process that manipulates the set of pricing solutions in response to user preferences.

Abstract: A computer program product, method and system for producing seat availability information for a mode of travel such as airline travel produce a prediction of availability of a seat in accordance with an availability query. The prediction is used in place of making an actual query to an airline or other travel mode availability system.

Abstract: A computer program product, method and system for producing seat availability information for a mode of travel such as airline travel produce a prediction of availability of a seat in accordance with an availability query. The prediction is used in place of making an actual query to an airline or other travel mode availability system.

Abstract: An airline travel planning system is described. The system includes a server computer executing a server process including a search process to search for set of pricing solutions in accordance with at least one destination and at least one origin. The search process represents the set of pricing solutions in the form of a directed acyclic graph. The system also includes a client computer executing a client process on the set of pricing solutions. The client process has a manipulation process that manipulates the set of pricing solutions in response to user preferences.

Abstract: An airline travel planning system is described. The system includes a server computer executing a server process including a search process to search for set of pricing solutions in accordance with at least one destination and at least one origin. The search process represents the set of pricing solutions in the form of a directed acyclic graph. The system also includes a client computer executing a client process on the set of pricing solutions. The client process has a manipulation process that manipulates the set of pricing solutions in response to user preferences.

Abstract: An airline travel planning system is described. The system includes a server computer executing a server process including a search process to search for set of pricing solutions in accordance with at least one destination and at least one origin. The search process represents the set of pricing solutions in the form of a directed acyclic graph. The system also includes a client computer executing a client process on the set of pricing solutions. The client process has a manipulation process that manipulates the set of pricing solutions in response to user preferences.

Abstract: An airline travel planning system is described. The system includes a server computer executing a server process including a search process to search for set of pricing solutions in accordance with at least one destination and at least one origin. The search process represents the set of pricing solutions in the form of a directed acyclic graph. The system also includes a client computer executing a client process on the set of pricing solutions. The client process has a manipulation process that manipulates the set of pricing solutions in response to user preferences.

Abstract: A computer program product, method and system for producing seat availability information for a mode of travel such as airline travel produce a prediction of availability of a seat in accordance with an availability query. The prediction is used in place of making an actual query to an airline or other travel mode availability system.

Abstract: An airline travel planning system is described. The system includes a server computer executing a server process including a search process to search for set of pricing solutions in accordance with at least one destination and at least one origin. The search process represents the set of pricing solutions in the form of a directed acyclic graph. The system also includes a client computer executing a client process on the set of pricing solutions. The client process has a manipulation process that manipulates the set of pricing solutions in response to user preferences.