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Time difference: San Antonio to Port Huron
RND (Randolph Air Force Base) → PHN (St Clair County International Airport)
+1h
Port Huron is ahead
1d
est. jet-lag recovery, eastbound
Reading the clocks
When it's noon in San Antonio, it's 1:00 PM in Port Huron. Good for planning calls home or coordinating with people on the other end.
Jet lag outlook
Minor adjustmentCrossing 1 time zone eastbound — plan roughly 1 day to feel fully adjusted.
Frequently asked questions
What is the time difference between San Antonio and Port Huron?
Port Huron is 1 hour ahead of San Antonio.
How bad will my jet lag be?
Crossing 1 time zone eastbound typically takes 1 day to fully adjust to. Eastbound trips (traveling against your body clock) tend to feel worse than the same distance westbound.
What is the flight time from RND to PHN?
The nonstop flight distance is 1,271 miles. See the full distance and flight-time breakdown for exact timing.
What's the best way to book around jet lag?
Overnight eastbound flights that land in the morning let you push through to local bedtime and adjust faster. Call CheapoTrav — our agents know which schedules on this route land at the best local time, plus unpublished phone-only fares.