Direct Flights from IAH to SFO: Your Ultimate Guide to Houston-San Francisco Travel
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Last updated Feb 16, 2026
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Tracking the May 7, 2026 departure — the cheapest date we found.
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Search FlightsTraveling from the heart of the Energy Capital of the World to the innovation hub of Silicon Valley has never been easier than with a direct flight from George Bush Intercontinental Airport (IAH) to San Francisco International Airport (SFO). This popular transcontinental route spans approximately 1,600 miles and is frequently served by major carriers like United Airlines, providing seamless connectivity for both high-powered business professionals and adventurous leisure travelers alike. Whether you are heading to the West Coast for a high-stakes tech conference, a scenic visit to the iconic Golden Gate Bridge, or a culinary tour of the historic Ferry Building, understanding the nuances of this four-hour flight will ensure a smooth transition from the humid Gulf Coast to the breezy, fog-kissed hills of the Bay Area. Prepare for a journey that bridges two of the most economically significant regions in the United States.
Travel Tips
When flying from IAH to SFO, keep in mind that San Francisco's weather is notoriously fickle and significantly cooler than Houston's year-round climate; always pack layers, including a light jacket or windbreaker, even if you are leaving Texas in sweltering 90-degree heat. Since this is a heavily trafficked business route, try to book your flights at least three to four weeks in advance to secure the most competitive rates and your preferred seating arrangements. If you are flying with United Airlines, consider utilizing their hub-to-hub amenities, which often include upgraded aircraft with superior in-flight entertainment options. Additionally, upon arrival at SFO, utilize the BART (Bay Area Rapid Transit) system located in the International Terminal for a cost-effective and traffic-free commute into downtown San Francisco, saving you both time and the hefty rideshare fees typically encountered during morning or evening peak hours.
Airport Information
Houston (IAH)
George Bush Intercontinental Airport (IAH) serves as a massive global gateway and a primary hub for United Airlines, located about 23 miles north of downtown Houston. The airport features five expansive terminals connected by an efficient underground train and an elevated Skyway system. Travelers can enjoy a wide variety of Texas-themed dining, high-speed Wi-Fi, and numerous premium lounges. Its sprawling layout requires arriving at least two hours early to navigate security and reach your gate comfortably.
San Francisco (SFO)
San Francisco International Airport (SFO) is a world-class facility known for its commitment to sustainability and impressive art exhibitions curated throughout its terminals. Located 13 miles south of the city, SFO offers four modern terminals and serves as a major gateway to the Pacific. Passengers can enjoy unique amenities like a dedicated yoga room, a Napa Valley-inspired wine lounge, and the renowned SFO Museum. The airport's circular layout makes it relatively easy to navigate between the domestic and international sections.
Seasonal Pricing Patterns
Pricing for the IAH to SFO route fluctuates significantly based on seasonal demand and major local events. Generally, the cheapest months to fly are January and February, when tourism dips following the busy winter holiday rush. Conversely, prices tend to peak during the summer months of June through August and around late December. Additionally, major tech conferences like Dreamforce can cause localized price spikes and limited hotel availability, so checking the San Francisco event calendar before booking is highly recommended for budget-conscious travelers seeking the best value.
Frequently Asked Questions
How long is the flight from Houston (IAH) to San Francisco (SFO)?
The average non-stop flight duration is approximately 4 hours and 15 minutes, though tailwinds can sometimes shorten the eastbound return trip.
Which airlines offer non-stop flights on this route?
United Airlines is the primary carrier offering multiple daily non-stop flights between IAH and SFO, as both airports serve as major hubs for the airline.
What is the time difference between Houston and San Francisco?
San Francisco is in the Pacific Time Zone, which is two hours behind Houston's Central Time Zone.
What is the best way to get from SFO to downtown San Francisco?
The BART train is the most efficient method, costing around $10 and taking about 30 minutes to reach the city center, avoiding the heavy highway traffic on US-101.
Are there sleep pods or lounges available at IAH for long layovers?
While IAH does not have dedicated sleep pods, there are several United Clubs, an American Express Centurion Lounge, and minute suites available for travelers looking for comfort.