Air Miles Calculator

Distance between San Diego, CA (SAN) and Carlsbad, NM (CNM)

Flight distance from San Diego to Carlsbad (San Diego International Airport – Cavern City Air Terminal) is 755 miles / 1214 kilometers / 656 nautical miles. Estimated flight time is 1 hour 55 minutes.

Driving distance from San Diego (SAN) to Carlsbad (CNM) is 884 miles / 1423 kilometers and travel time by car is about 14 hours 55 minutes.

Map of flight path and driving directions from San Diego to Carlsbad.

Shortest flight path between San Diego International Airport (SAN) and Cavern City Air Terminal (CNM).

How far is Carlsbad from San Diego?

There are several ways to calculate distances between San Diego and Carlsbad. Here are two common methods:

Vincenty's formula (applied above)
  • 754.594 miles
  • 1214.401 kilometers
  • 655.724 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.

Haversine formula
  • 753.025 miles
  • 1211.877 kilometers
  • 654.361 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).

Airport information


A San Diego International Airport
City: San Diego, CA
Country: United States Flag of United States
IATA Code: SAN
ICAO Code: KSAN
Coordinates: 32°44′0″N, 117°11′24″W

B Cavern City Air Terminal
City: Carlsbad, NM
Country: United States Flag of United States
IATA Code: CNM
ICAO Code: KCNM
Coordinates: 32°20′15″N, 104°15′46″W

Time difference and current local times

The time difference between San Diego and Carlsbad is 1 hour. Carlsbad is 1 hour ahead of San Diego.

Time Difference

San Diego, CA

 PDT

Carlsbad, NM

 MDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 130 kg (287 pounds).

Frequent Flyer Miles Calculator

San Diego (SAN) → Carlsbad (CNM).

Air miles:
755
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
755

Round trip?