Cheap flight tickets from San Diego International to Houston

Compare San Diego International to Houston flight deals

Find the cheapest month or even day of the year to fly to Houston

Book the best Houston fare with no extra fees

Flight deals from San Diego International to Houston

Looking for a cheap last-minute deal or the best return flight from San Diego International Airport to Houston? If you want to travel next month, return fares start from RM834. Find the lowest prices on one-way and return tickets right here.

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

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

Direct flights from San Diego International to Houston

Alternative San Diego International to Houston routes

Looking for the cheapest, fastest or easiest route from San Diego International to Houston? You could fly into the following airports instead.

San Diego to Houston: Flight information

The things to know before you go.
Cheapest flight foundRM241
Cheapest month to flyMay
Average flight time3 hrs, 15 mins
Most popular airlineSouthwest Airlines
Average flights per week222

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

There are 4 airports in Houston: Houston Hobby, Houston George Bush Intercntl., Houston Ellington Field, and Galveston.
The best price we found for a return flight from San Diego International to Houston is RM637. 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 14 minutes is the average flight time from San Diego International to Houston.
Southwest Airlines, United and Lufthansa fly direct from San Diego International to Houston.
As of May 2026, there are 74 flights per week flying from San Diego International to Houston.
The cheapest month to fly from San Diego International to Houston is usually May.
If you're flying from San Diego International Airport, the cheapest airport near Houston is Houston George Bush Intercntl. – which is 25.0 km away from the centre of Houston. We've found flights into this airport from RM637.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Diego International Airport to Houston on Wednesday, 20 May 2026.
Yes – the average flight time is 3 hours and 14 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 Houston 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 Houston is around 40 days in advance, so don’t leave your flight to the last minute.
In May, the average temperature is usually around 25°C. August is typically the warmest month in Houston, when it usually averages around 34°C. You can expect the least rain in March. The coldest month is January, with temperatures averaging 6°C. The rainiest month is June.
Currently, Frontier Airlines and United offer the cheapest flight tickets to Houston.

Travelling from San Diego International Airport (SAN) to Houston: what you need to know

  • The average time for a direct flight from San Diego International Airport to Houston is 3 hours 25 minutes.

  • San Diego International Airport is located in San Diego. Based in the UTC-5 timezone, Houston is two hours ahead of San Diego.

  • With 34 flights a week between the two airports, San Diego International Airport (SAN) to George Bush Intercontinental Airport (IAH) is the most popular route. United Airlines operates the earliest flight at 06:15. If you prefer to make the most of your day before jetting off, the last flight from SAN to IAH is with United Airlines at 18:41.

  • For a stress-free journey, turn up at the airport two hours ahead of international flights and an hour before domestic departures. This ensures you have enough time to catch your SAN to Houston flight.

  • Travelling during a peak period like school or public holidays? Expect longer queues at check-in and security. To play it safe, arrive up to four hours before international flights and two hours ahead of domestic departures.

  • Start your trip at SAN and fly nonstop to George Bush Intercontinental Airport (IAH). That will be your arrival point when searching for San Diego International Airport to Houston tickets.

  • Keep your eyes peeled for offers from United Airlines. This carrier operates direct flights from San Diego International Airport to Houston.

  • SAN is around 3 kilometres from central San Diego. If you're catching a cab, driving or ride-sharing from the centre, it'll take 10 minutes or so to get there, depending on traffic conditions. If you're planning to take public transport, expect the travel time to be around 20 minutes.

  • In search of a hotel close to SAN? If you're boarding an early flight from San Diego International Airport to Houston, these accommodation options will put you moments from your departure gate:

  • When it comes to the on-time performance of San Diego International Airport, 71.38% of flights arrive within the scheduled time frame.

  • You'll find SAN at N Harbour Dr.

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

  • RM241 is the cheapest price we've seen for a one-way San Diego International Airport to Houston flight. A round-trip flight ticket right now is RM637. Depending on when and how early you book, these fares can change.

  • To snag cheap flights from SAN to Houston, book your trip one month before your departure date.

  • Plan your trip for May. That's the best month for scoring a bargain on San Diego International Airport to Houston tickets. If your travel dates are flexible, use the 'Whole month' tool to access the lowest price across each month.

  • Picking up a cheap flight from SAN to Houston couldn't be easier with Price Alerts. All you need to do is create one of these automatic notifications and we'll notify you as soon as a deal gets even better.

  • Find a cheap flight from San Diego International Airport to Houston with the help of our filters. Choose your preferred duration, departure time and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in Houston

George Bush Intercontinental Airport (IAH)

William P. Hobby Airport (HOU)

  • William P. Hobby Airport (HOU) is roughly 19 kilometres from central Houston. Once you've hopped off your flight from San Diego International Airport to Houston, it'll take you around 20 minutes to get to the heart of the city in a ride-share or cab.

  • If you're catching public transport, it'll take about 1 hour 40 minutes.

  • There are some great places to drop your things at near HOU. Unwind and get cosy after your SAN to Houston flight at one of these perfectly located options:

  • The quickest way to get to where you're going is with a William P. Hobby Airport rental car. Grab a set of wheels from Easirent, Dollar or Thrifty and be on your way in a flash.

  • Secure your first choice, not your last resort. Booking your ride from HOU four weeks in advance often means better deals and a bigger choice of vehicles.

  • You can find William P. Hobby Airport at 7800 Airport Boulevard.

Best time to go to Houston

  • Before scheduling your flights from San Diego International Airport to Houston, consider which time of year is best for you. High season in Houston offers a bustling atmosphere and plenty of activities, while low season means you'll get better deals on hotels and smaller crowds.

  • The warmest month in Houston is August, with temperatures ranging between 24ºC (75ºF) and 40ºC (104ºF). Book your San Diego International Airport to Houston flight ticket then if that's your idea of comfortable weather.

  • January sees average temperatures of between 5ºC (41ºF) and 19ºC (66ºF). Search for a cheap ticket from SAN to Houston around that time if you like travelling in cooler conditions.

More about Houston

Explore more of United States

  • San Antonio is just one of the many cities in United States waiting to be discovered once you've taken in the sights of Houston. Around 306 kilometres away to the west, its best attractions include The San Antonio River Walk, San Antonio Missions National Historical Park and San Fernando Cathedral.

  • If you want to check out another side of United States, consider Dallas, roughly 370 kilometres north of Houston. Dallas Arboretum and Botanical Gardens, Perot Museum of Nature and Science and Dallas Museum of Art are highlights.

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