Is there a train to San Diego?

No, there is no practical passenger rail service from Maine.

What is the best airport?

San Diego International Airport (SAN) is the main hub.

How long is the drive?

Expect 45 hours of driving time.

Yes, especially in the Northeast and parts of the West.

What is the time difference?

San Diego is 3 hours behind Maine.

Kittery

San Diego

Flight Driving

Kittery to San Diego

Updated: 28 May 2026

The journey from Kittery to San Diego is a cross-country trek of over 4,800 kilometers. Flying from Portland (PWM) to San Diego International Airport (SAN) is the only practical method for most travelers, typically requiring one or two connections. Driving is a massive multi-day expedition across the entire United States. This route takes you from the Atlantic coast to the Pacific coast.

Total Distance: 4,800 km driving distance; 4,200 km straight-line air distance.

Fastest Way

Flying from PWM to SAN takes about 9 hours including layovers.

Cheapest Way

Flying is often cheaper than the total cost of fuel, hotels, and food for a 5-day drive.

Compare Kittery to San Diego Routes

	Flight Connecting	Driving Direct
Duration	9 hours	45 hours
Avg Price	$600 - $1,000	$700 - $1,000 in fuel
Operator	United Airlines	Personal Vehicle
Route	PWM to DEN to SAN	I-90 W to I-80 W to I-15 S
Tip	Denver (DEN) is a common and efficient connection point.	This is a 5-day minimum drive; plan your route carefully.

Travel Tips

Book Flights Early
Transcontinental flights are expensive; book well in advance.
Time Zone
San Diego is in the Pacific Time Zone, three hours behind Maine.
Airport Transport
SAN is very close to downtown; use a ride-share for quick access.
Pack Light
Avoid checked bag fees by packing efficiently for your trip.
Hydration
Drink water on the plane to combat the dry cabin air.

Safety Tips

Altitude
Be aware of altitude changes if driving through the Rockies.
Driver Fatigue
Do not attempt to drive this distance alone without multiple stops.
Emergency Kit
Keep a comprehensive emergency kit in your vehicle.
Navigation
Use a reliable GPS for cross-country navigation.