Open-jaw

There are three types of open routes:

• Destination open-jaw - on the way back, the passenger leaves the airport that does not coincide with the arrival point on the way there, that is, from the point of arrival on the way there to the departure point on the way back, the passenger gets by another vehicle (car, train) or by another ticket . Example: there Moscow - Berlin , back Munich - Moscow ;
• Origin open-jaw - on the way back, the passenger arrives at the airport, which does not coincide with the departure point on the way there. Example: Moscow - Paris there , Paris - St. Petersburg back .
• Double open-jaw - two unconnected segments on the same reservation. Example: there Moscow - Berlin , back Munich - St. Petersburg

If different airports are located within the same city, then such routes are not considered open.

An open segment of the route, which the passenger must overcome independently or on another ticket, is displayed on the route receipt as “ARNK”, which stands for “arrival unknown” (“arrival method unknown”). This is explained by the fact that both ARS airlines and the main global distribution systems require segments to go sequentially, and an attempt to create a reservation with arrival at one airport and subsequent departure from another will give an error. The ARNK value lets the system know that this is done consciously ^[1] .

A typical open-jaw route on receipt will look like this:

• Segment 1: 11-MAR: CDG/LED (Paris-Charles de Gaulle to Saint-Petersburg)
• Segment 2: ARNK: Arrival Unknown or Surface Transportation from LED to SVO
• Segment 3: 15-MAR: SVO/CDG (Moscow-Sheremetyevo to Paris-Charles de Gaulle)

ARNK is indicated as the second segment and means that overcoming this leg of the journey on this ticket is not provided.

Unclosed routes can be used to travel around a country. For example, a traveler may want to fly from Moscow to Berlin, use public transport or a rented car to get to Munich, and from there return to Moscow. Another example is sea cruises, where the end point of the journey is not the port from which the ship initially leaves. Two one-way tickets usually cost an order of magnitude more than one round-trip ticket , therefore, special open-jaw fares that actually coincide with the price of round-trip tickets allow the passenger to save. The airline also wins, because in this case the passenger flies back with their flight, and not with a competitor's.

A condition for calculating such routes at the round-trip tariff is usually the location of departure and arrival points that do not coincide in the route within the same country or region. Often an open segment cannot exceed flight segments in distance.

• Open-jaw in the US Code of Federal Regulations