Route guide · 1,310 miles
Cheap Flights from Houston to San Diego
HOU → SAN · Nonstop 3h 10m · Live round-trip fares
The run from Houston (HOU) to San Diego (SAN) is 1,310 miles of sky, and ticket prices on it are anything but steady. One week can cost double the next. Booking about 3–6 weeks in advance — and watching fares with a free Airfare Deal alert — is how regulars on this route keep costs down.
Live fares for HOU → SAN are updating. Use the search below for real-time prices.
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See live fares
Updated daily
Flight time
3h 10m
Nonstop, typical
Distance
1,310 mi
HOU → SAN
Book ahead
3–6 weeks
Best window, typically
Nonstop airlines
1
Southwest Airlines
Nonstop flights from Houston to San Diego
Nonstop flights from Houston to San Diego are flown by Southwest Airlines. The 1,310-mile trip takes about 3h 10m gate to gate, and nonstops are usually cheapest when booked 3–6 weeks ahead.
Booking insights: Houston → San Diego
- Distance: 1,310 miles · nonstop flight time: 3h 10m.
- Cheapest upcoming week in the live data starts around Nov 12, with fares from $104.
- Fares tend to bottom out when you book about 3–6 weeks ahead — earlier than that rarely helps, later usually hurts.
- If your dates flex by a day or two, shifting to a midweek departure is the easiest saving there is.
- A free fare alert beats daily checking: we watch this route and ping you when prices drop.
Price trend
Cheapest departure weeks ahead
Departing around Nov 12 is currently the cheapest window — about $114 less than the nearest weeks. Based on recent fares found for this route; prices change quickly.
Cheapest month · Houston → San Diego
November 2026
Every date's recent round-trip fare, at a glance.
Fares from
$104
Cheapest: Fri, Nov 13 — $104
Get this fare →Recent fares found for specific dates in November 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 Diego: what you need to know
The flight
At 1,310 miles, this is a long domestic flight — about 3h 10m 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
Southwest 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 (HOU)
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 Diego (SAN)
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 Diego airport guide lays out your ground options, from transit and shuttles to rideshares and rental cars. Flying back the other way? Check San Diego to Houston fares — prices on the return direction often move on a different rhythm.
When to book
For a trip of 1,310 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
- 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.
- If you're traveling with only a carry-on, you can skip the bag-drop line entirely with mobile check-in.
- Download the airline's app before you fly; gate changes and delays show up there first.
Houston to San Diego flight FAQs
How long is the flight from HOU to SAN?
Plan on about 3h 10m in the air for a nonstop from Houston to San Diego — the route runs roughly 1,310 miles. Connecting flights typically add 2–4 hours.
Are there nonstop flights from Houston to San Diego?
Southwest Airlines typically operate nonstop flights from HOU to SAN. Nonstops are usually cheapest when booked 3–6 weeks ahead of departure.
What is the cheapest month to fly from Houston to San Diego?
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 HOU to SAN?
Book inside the final week and you'll usually pay a premium on HOU to SAN. Fares booked 3–6 weeks ahead are almost always kinder.
What is a good round-trip deal from Houston to San Diego?
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 Diego?
You'll mainly see Southwest Airlines on Houston to San Diego. 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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