Distance From St Louis Regional Airport to John Wayne Airport-Orange County Airport, ALN - SNA Distance

The distance from St Louis Regional Airport (ALN) to John Wayne Airport-Orange County Airport (SNA) is 1585 miles or 2550 kilometers or 1376 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Alton/St Louis ( United States ) to Santa Ana ( United States )?

A one-way nonstop (direct) flight between Alton/St Louis and Santa Ana takes around 3 hours 38 minutes.

Estimated flight time from St Louis Regional Airport, Alton/St Louis, United States to John Wayne Airport-Orange County Airport, Santa Ana, United States is 3 hours 38 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • ALN - SNA

Kilometers		2550 km
Statute Miles		1585 miles
Nautical Miles		1376 nm
Avg. Time of Flight		3 hours 38 minutes

St Louis Regional Airport to John Wayne Airport-Orange County Airport Flight Route Map - ALN to SNA Flight Path

Location of St Louis Regional Airport & John Wayne Airport-Orange County Airport is given below.
Click the map to view Alton/St Louis to Santa Ana nonstop flight path and travel direction.

Click to see flight route on Google Map between Alton/St Louis, United States and Santa Ana, United States. .

Nonstop flight route between Alton/St Louis, United States and Santa Ana, United States.

Time Difference Between the Airports • ALN - SNA

Time difference between Alton/St Louis (United States) and Santa Ana (United States) is 3 Hours.
Santa Ana time is 3 Hours behind Alton/St Louis.

Location	Local Time
Alton/St Louis (United States)	2025-12-16, 13:42:42 EST
Santa Ana (United States)	2025-12-16, 10:42:42 PST

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

St Louis Regional Airport (ALN / KALN) Alton/St Louis, United States

Destination

John Wayne Airport-Orange County Airport (SNA / KSNA) Santa Ana, United States