Cheap Flights from Houston to San Diego International

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Flight deals from Houston to San Diego International

Looking for a cheap last-minute deal or the best return flight from Houston to San Diego International? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Houston to San Diego International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Houston to San Diego International flights are currently cheapest in April.

Direct flights from Houston to San Diego International

Houston to San Diego International: Alternative routes

Compare routes from Houston to San Diego below. You may find an airport to fly into that's cheaper, faster, or easier than San Diego International.

Houston to San Diego: Flight information

The things to know before you go.
Cheapest flight found$252
Cheapest month to flyApril
Average flight time3 hrs, 28 mins
Most popular airlineUnited
Average flights per week102

Finding cheap flights from Houston to San Diego International: Frequently asked questions

The best price we found for a return flight from Houston to San Diego International is $252. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
3 hours and 27 minutes is the average flight time from Houston to San Diego International.
United, Southwest Airlines and Lufthansa fly direct from Houston to San Diego International.
As of March 2026, there are 102 flights per week flying from Houston to San Diego International.
The cheapest month to fly from Houston to San Diego International is usually April.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Houston to San Diego International Airport on Thursday, 16 April 2026.
Yes – the average flight time is 3 hours and 27 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Diego International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Diego is around 40 days in advance, so don’t leave your flight to the last minute.

Flying from Houston to San Diego International Airport (SAN): What you need to know

  • Start planning your holiday by checking out where you'll catch your flight from Houston to San Diego International Airport (SAN). Explore your options for leaving from George Bush Intercontinental Airport (IAH) or William P. Hobby Airport (HOU), two of the city's main airports.

  • The average length of a direct Houston to San Diego International Airport flight is 3 hours 25 minutes.

  • The timezone in San Diego is UTC-7, which is two hours behind Houston. San Diego International Airport is located in San Diego.

  • The busiest route is from George Bush Intercontinental Airport (IAH) to San Diego International Airport (SAN), with 34 direct services every week. If you're eager to be on your way, the earliest flight from IAH to SAN is the 7:25am United Airlines option. If you need some extra time before takeoff, the final departure is at 8:17pm with United Airlines.

  • For a stress-free journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This way, you'll have plenty of time to board your flight from Houston to SAN.

  • Travelling during a peak period like public or school holidays? Expect longer queues at check-in and security. Give yourself extra leeway and arrive up to four hours before international flights and two hours ahead of domestic departures.

Airports in Houston

George Bush Intercontinental Airport (IAH)

  • Get there in one go from George Bush Intercontinental Airport (IAH). Direct flights from Houston to San Diego International Airport (SAN) can be booked from here.

  • You'll find a direct flight from Houston to San Diego International Airport with United Airlines. This well-known airline operates services from IAH.

  • The majority of travellers choose to fly with United Airlines from IAH to SAN.

  • With a reliable 80.99% of services arriving on schedule, United Airlines ranks as the most on-time carrier flying this route.

  • Travelling from central Houston to IAH takes about 50 minutes by public transport. If you drive, ride-share or get a cab, you'll cover the 27 kilometres in 20 minutes or so, depending on traffic conditions.

  • Planning to catch an early flight from Houston to San Diego International Airport? Avoid the stress of rushing to the terminal (and catch some extra z's) by choosing one of these stays close to George Bush Intercontinental Airport:

  • 78.42% of flights taking off from George Bush Intercontinental Airport reach their destination on time.

  • The address for IAH is 16930 JFK Boulevard.

William P. Hobby Airport (HOU)

  • You can book a direct Houston to San Diego International Airport (SAN) flight ticket with departures from William P. Hobby Airport (HOU). See if flying from HOU works better for your plans.

  • Board your direct flight from Houston to SAN with Southwest Airlines. This is one of the top airlines operating this route out of HOU.

  • Southwest Airlines is the go-to airline for bookings on the HOU to SAN route.

  • The carrier with the best on-time performance is Southwest Airlines. Its William P. Hobby Airport to San Diego International Airport flights land as planned 71.53% of the time.

  • You can arrive at HOU from central Houston in approximately 20 minutes by car (depending on traffic conditions). The ride on public transport will take roughly 1 hour 40 minutes to cover the 19 kilometres or so.

  • Catching the earliest flight? Think about staying at one of these hotels near William P. Hobby Airport the day before your Houston to SAN flight:

  • Flights from William P. Hobby Airport have a strong track record for punctuality, with 81.06% of them arriving right on cue.

  • The address for HOU is 7800 Airport Boulevard.

About San Diego International Airport (SAN)

Getting from San Diego International Airport (SAN) to central San Diego

  • San Diego International Airport to central San Diego is roughly 3 kilometres. If you're renting a car or taking a cab, do some research to make your trip as smooth as possible. Journey times vary depending on traffic and the time of day.

  • When travelling by public transport, expect a journey of around 20 minutes.

How to find the cheapest flights from Houston to San Diego International Airport (SAN)

  • Right now, $131 is the best price we've found for a one-way ticket from Houston to San Diego International Airport. The cheapest price for a return flight is $252. Remember fares may change due to availability at the time of booking.

  • Don't wait until the last moment. You're more likely to find cheap flights from Houston to SAN if you book early. Airlines often have some excellent early bird rates.

  • The 'Whole month' search tool shows you the cheapest Houston to San Diego International Airport tickets across every month. It's an easy way to snap up a bargain if your travel dates are flexible.

  • There's no need to check every day to find out if prices have dropped when you set up a Price Alert. We'll notify you when a new deal shows up on flight tickets from Houston to SAN.

  • Tailor your travel plans using filters. Choose your preferred departure and arrival times, total journey duration and airlines. You can also sort your results by 'Fastest,' 'Best' or 'Cheapest' flights from Houston to San Diego International Airport.

The best time to fly from Houston to San Diego International Airport (SAN)

  • July is the busiest month for flights from Houston to San Diego International Airport (SAN). Plan your visit to San Diego in May if you'd rather avoid peak season.

  • When booking your Houston to SAN flight ticket, consider what kind of weather you prefer. August is the warmest month in San Diego, with temperatures ranging from 17ºC to 28ºC.

  • If you want cooler conditions, search for a cheap ticket from Houston to San Diego International Airport in February when temperatures are between 7ºC and 23ºC.

More about San Diego

  • When it comes to looking for somewhere to rest your head, you'll find the top stays in San Diego right here. Check out these options after locking in your flight from Houston to San Diego International Airport:

  • Your San Diego visit isn't complete without checking out the sights. Leading attractions you can't miss include San Diego Zoo, San Diego Balboa Park and USS Midway Museum.

Explore more of the United States

  • Los Angeles is just one of the many places in the United States waiting to be explored once you've seen San Diego. Around 177 kilometres away to the north-west, its top attractions include Hollywood Sign, Griffith Observatory and Hollywood Bowl.

  • Long Beach is another well-known destination in the United States and is around 145 kilometres north-west of San Diego. No trip is complete without experiencing SkyThrills! - Fly a Real Fighter Aircraft & Become A Fighter Pilot For A Day! Long Beach, CA, Queen Mary and The Queen Mary.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.