Is there a direct flight?

Yes, there are multiple direct flights daily from Seattle to San Diego.

How long is the drive?

The drive takes approximately 21 hours, depending on traffic.

What is the best route?

Taking I-5 South is the most direct route.

Amtrak offers service, but it is not the most practical for this distance.

What is the best time to visit?

Spring and fall offer the most comfortable temperatures.

Monroe

San Diego

Flight Driving

Monroe to San Diego

Updated: 31 May 2026

The journey from Monroe to San Diego is a long-distance trip down the West Coast. Flying from Seattle-Tacoma International Airport (SEA) to San Diego International Airport (SAN) is the most practical method, taking about 3 hours of flight time. Driving is a major undertaking, covering over 2,000 kilometers and taking roughly 20 to 22 hours of driving time via I-5 South. This route takes you through the scenic landscapes of Washington, Oregon, and California.

Total Distance: 2,000 km driving; 1,700 km air distance.

Fastest Way

Flying from SEA to SAN is the fastest, taking about 3 hours.

Cheapest Way

Driving is cheaper for groups, but flying is significantly faster.

Compare Monroe to San Diego Routes

	Flight Direct	Driving Direct
Duration	3 hours	21 hours
Avg Price	$150 - $400	$250 - $400 in fuel
Operator	Alaska Airlines	Personal Vehicle
Route	SEA to SAN	I-5 S
Tip	Flights are frequent and very convenient.	Expect to spend at least three days on the road.

Travel Tips

Airport Arrival
Arrive at SEA at least two hours before your flight.
Road Trip Breaks
Plan stops in cities like Los Angeles and Santa Barbara.
Packing
Bring light clothing for the warm weather in San Diego.
Local Transit
San Diego is best explored by car, though public transit is available.
Dining
Try the local restaurants in the Gaslamp Quarter or Little Italy.