Direct (nonstop) flights from San Francisco to Houston
1 airline flys nonstop from San Francisco International (SFO) to George Bush Intcntl Houston (IAH). It's 1,635 miles (2,632 km), about 4h 5m in the air. Operated by United Airlines.
United Airlines
Route data last updated: May 27, 2026
Airlines with non-stop flights
UA
United Airlines
Alternative Routes
Other ways to fly from San Francisco to Houston with one stop · direct emits 276 kg CO₂ per passenger
Looking for the return flight?
IAH → SFO: Flights from Houston to San FranciscoOther direct flights from San Francisco
Direct flights from Houston (IAH)
Frequently Asked Questions
How long is the direct flight from San Francisco to Houston?
A nonstop flight from San Francisco (SFO) to Houston (IAH) takes approximately 4 hours and 5 minutes. The distance is 1,635 miles (2,632 km).
Which airlines fly nonstop from San Francisco to Houston?
Just United Airlines.
Is there a nonstop flight from San Francisco to Houston?
Yes. 1 airline: United Airlines.
How far is San Francisco from Houston?
The flight distance from San Francisco to Houston is 1,635 miles (2,632 km), measured as the great-circle (shortest air) distance.
What type of aircraft flies from San Francisco to Houston?
At 4h 5m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
What is the carbon footprint of a flight from San Francisco to Houston?
Roughly 276 kg CO2 per passenger one-way. That's about the same as driving 1,380 km.
Is the return flight from Houston to San Francisco also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from San Francisco to Houston?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at San Francisco International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.