Flight
Houston to San Francisco
Updated: 28 May 2026
The most practical way to travel from Houston to San Francisco is by air, connecting George Bush Intercontinental Airport (IAH) to San Francisco International Airport (SFO). Direct flights take approximately 4 hours. Driving is a massive cross-country journey of over 3,000 kilometers, taking roughly 28 hours via I-10 and I-5. San Francisco is a global tech and cultural hub, while Houston is a major energy center. Flying is highly recommended to save time.
Total Distance: Driving distance 3,050 km, Air distance 2,600 km.
Fastest Way
Direct flight from IAH to SFO takes 4 hours.
Cheapest Way
Booking a round-trip flight at least four weeks in advance is the cheapest option.
Compare Houston to San Francisco Routes
Flight
Direct
Duration
4 hours
Avg Price
$200-$500
Operator
United Airlines
Route
IAH to SFO
United offers the most frequent direct service on this route.
Travel Tips
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Airport TransitUse the BART train or ride-share to get from SFO to downtown San Francisco.
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WeatherSan Francisco weather is cool and foggy; pack layers if traveling at any time of year.
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DiningTry the diverse food scene in San Francisco, from seafood to fine dining.
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BookingCheck for flight deals on Tuesday afternoons for the best prices.
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PackingBring comfortable walking shoes for exploring San Francisco's diverse neighborhoods.
Safety Tips
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Stay AwareStick to well-traveled areas when exploring the city at night.
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Travel DocumentsKeep your ID and boarding pass accessible during your flight.
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HealthStay hydrated during your flight to combat dry cabin air.
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Public TransitKeep your belongings secure while riding the BART train.
People Also Ask
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Are there direct flights?Yes, United Airlines operates direct flights between IAH and SFO.
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How long is the flight?A direct flight takes about 4 hours.
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What is the best way to travel?Flying is the most efficient and practical method.
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Is San Francisco walkable?Yes, downtown San Francisco is very walkable and has excellent public transit.
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What is the time difference?San Francisco is two hours behind Houston.
Quick Info
- From Houston, Texas, United States
- To San Francisco, California, United States
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Modes
Best Time to Travel
September to November for mild weather in San Francisco.
Things to Do in San Francisco
1
Golden Gate Bridge
Visit this iconic bridge, a symbol of San Francisco and a marvel of engineering.
2
Alcatraz Island
Take a ferry to this historic island, home to the famous former federal prison.
3
Space Center Houston
Before leaving Houston, visit this world-class museum dedicated to space exploration.
4
Fisherman's Wharf
Explore this popular tourist area, featuring shops, restaurants, and sea lions.
Tags
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