Route guide · 1,632 miles
Cheap Flights from Houston to San Francisco
IAH → SFO · Nonstop 3h 49m · Live round-trip fares
Looking for cheap flights from Houston to San Francisco? You're in the right place. Airfare Deal tracks live fares on this 1,632-mile route around the clock. As a rule of thumb, booking 3–6 weeks ahead lands the best prices — and a free fare alert means you never have to keep refreshing the page.
Live fares for IAH → SFO are updating. Use the search below for real-time prices.
Search live pricesCheapest recent fare
See live fares
Updated daily
Flight time
3h 49m
Nonstop, typical
Distance
1,632 mi
IAH → SFO
Book ahead
3–6 weeks
Best window, typically
Nonstop airlines
1
United Airlines
Nonstop flights from Houston to San Francisco
Nonstop flights from Houston to San Francisco are flown by United Airlines. The 1,632-mile trip takes about 3h 49m gate to gate, and nonstops are usually cheapest when booked 3–6 weeks ahead.
Booking insights: Houston → San Francisco
- Distance: 1,632 miles · nonstop flight time: 3h 49m.
- Cheapest upcoming week in the live data starts around Oct 15, with fares from $153.
- Fares tend to bottom out when you book about 3–6 weeks ahead — earlier than that rarely helps, later usually hurts.
- Tuesday and Wednesday departures usually undercut Friday and Sunday fares on routes like this one.
- A free fare alert beats daily checking: we watch this route and ping you when prices drop.
Cheapest month · Houston → San Francisco
October 2026
Every date's recent round-trip fare, at a glance.
Fares from
$153
Cheapest: Sat, Oct 17 — $153
Get this fare →Recent fares found for specific dates in October 2026. Blank days had no recent fare in our data — ask our team and we'll check them for you.
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Flying from Houston to San Francisco: what you need to know
The flight
At 1,632 miles, this is a long domestic flight — about 3h 49m gate to gate on a nonstop. It deserves a bit of planning: eat before you board or buy early (popular items sell out), and pick your seat with the flight length in mind.
Airlines on this route
United Airlines flies this route nonstop. That matters more than it sounds: the cheapest fare on one carrier is rarely the same product as the cheapest on another. Checked-bag fees, free seat selection and change rules all differ, so compare the full trip cost before you pick a winner. See our airline guides for exactly what each carrier charges — then send an enquiry and we'll confirm the all-in price for your dates.
Leaving from Houston (IAH)
Plan to be at the airport two hours before a domestic departure — ninety minutes can work at smaller airports outside peak times, but security lines are the one variable you can't control. If you're checking a bag, add time rather than cutting it close. Our Houston airport guide covers terminals, parking and ground transport so you can plan the trip to the airport, not just the flight.
Arriving in San Francisco (SFO)
Before you land, know how you're getting from the airport to where you're staying — it's the part of the trip people forget to plan. The San Francisco airport guide lays out your ground options, from transit and shuttles to rideshares and rental cars. Flying back the other way? Check San Francisco to Houston fares — prices on the return direction often move on a different rhythm.
When to book
For a trip of 1,632 miles, booking 3–6 weeks ahead typically lands you in the sweet spot. Leave it to the final two weeks and prices usually climb as the cheapest seats sell out. If your dates are flexible, midweek departures are where the lower fares hide on most domestic routes.
Good to know before you go
- Screenshot your fare before you enquire — prices move, and a saved fare helps our team match or beat it.
- Flexible dates? Search a few days either side — one day can change the fare a lot.
- Morning flights are delayed less often than evening ones — earlier departures have the best on-time record.
- Basic economy fares often exclude checked bags and seat selection. Price the whole trip, not the headline fare.
- Get to the airport two hours before departure; security, not the flight, is the part that runs late.
Houston to San Francisco flight FAQs
How long is the flight from IAH to SFO?
Plan on about 3h 49m in the air for a nonstop from Houston to San Francisco — the route runs roughly 1,632 miles. Connecting flights typically add 2–4 hours.
Are there nonstop flights from Houston to San Francisco?
United Airlines typically operate nonstop flights from IAH to SFO. Nonstops are usually cheapest when booked 3–6 weeks ahead of departure.
What is the cheapest month to fly from Houston to San Francisco?
Travelers usually find the gentlest prices away from peak periods — think post-holiday January and the early-fall weeks. Midweek dates inside those windows are cheaper still.
How much are last minute flights from IAH to SFO?
Book inside the final week and you'll usually pay a premium on IAH to SFO. Fares booked 3–6 weeks ahead are almost always kinder.
What is a good round-trip deal from Houston to San Francisco?
A good deal is anything at or below the recent fares shown above. Set a free Airfare Deal alert and we'll ping you the moment fares drop.
Which airlines fly from Houston to San Francisco?
You'll mainly see United Airlines on Houston to San Francisco. Checking each against the live fares below is the surest way to find the lowest price for your dates.
How early should I get to Houston airport for this flight?
Plan on two hours before departure for a domestic flight — ninety minutes can work at smaller airports outside peak times. If you're checking a bag, earlier is better; the bag-drop line, not the flight, is what runs late.
Do the cheapest fares on this route include a checked bag?
Usually not. Basic economy fares on most airlines include a carry-on but charge extra for checked bags, and seat selection can cost more too. Add up the real total before comparing — a slightly higher regular fare sometimes works out cheaper. Our team confirms the full breakdown with you before you pay.
More cheap flights from Houston
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