$81 Cheap Flights from Houston (HOU) to San Diego (SAN)

View $81 flight on Wed, Aug 6, 2025Opens in a new window

Popular airlines from Houston William Hobby Airport (HOU) to San Diego Intl. Airport (SAN)

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Cheap Flights from Houston to San Diego (HOU-SAN)

Prices were available within the past 7 days and start at $81 for one-way flights and $159 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Aug 14 - Mon, Aug 18
IAH
Houston
CLD
Carlsbad
$159 Roundtrip, found 5 days ago
$159
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Aug 14 from Houston to Carlsbad, returning Mon, Aug 18, priced at $159 found 5 days ago
American Airlines
Tue, Aug 5 - Tue, Aug 12
HOU
Houston
SAN
San Diego
$159 Roundtrip, found 2 days ago
$159
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Aug 5 from Houston to San Diego, returning Tue, Aug 12, priced at $159 found 2 days ago
Spirit Airlines
Wed, Jul 30 - Sat, Aug 2
IAH
Houston
SAN
San Diego
$163 Roundtrip, just found
$163
Roundtrip
just found
Select Spirit Airlines flight, departing Wed, Jul 30 from Houston to San Diego, returning Sat, Aug 2, priced at $163 just found
Spirit Airlines
Fri, Aug 1 - Wed, Aug 6
IAH
Houston
SAN
San Diego
$165 Roundtrip, found 19 hours ago
$165
Roundtrip
found 19 hours ago
Select Spirit Airlines flight, departing Fri, Aug 1 from Houston to San Diego, returning Wed, Aug 6, priced at $165 found 19 hours ago
Spirit Airlines
Mon, Jul 21 - Thu, Jul 31
IAH
Houston
SAN
San Diego
$168 Roundtrip, found 11 hours ago
$168
Roundtrip
found 11 hours ago
Select Spirit Airlines flight, departing Mon, Jul 21 from Houston to San Diego, returning Thu, Jul 31, priced at $168 found 11 hours ago
American Airlines
Sat, Aug 9 - Tue, Aug 12
IAH
Houston
CLD
Carlsbad
$169 Roundtrip, found 2 days ago
$169
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Aug 9 from Houston to Carlsbad, returning Tue, Aug 12, priced at $169 found 2 days ago
Spirit Airlines
Fri, Aug 1 - Wed, Aug 6
IAH
Houston
SAN
San Diego
$169 Roundtrip, found 19 hours ago
$169
Roundtrip
found 19 hours ago
Select Spirit Airlines flight, departing Fri, Aug 1 from Houston to San Diego, returning Wed, Aug 6, priced at $169 found 19 hours ago
Southwest Airlines
Fri, Oct 17 - Tue, Oct 21
HOU
Houston
SAN
San Diego
$169 Roundtrip, found 2 days ago
$169
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Fri, Oct 17 from Houston to San Diego, returning Tue, Oct 21, priced at $169 found 2 days ago
United
Wed, Oct 22 - Tue, Oct 28
IAH
Houston
SAN
San Diego
$174 Roundtrip, found 4 days ago
$174
Roundtrip
found 4 days ago
Select United flight, departing Wed, Oct 22 from Houston to San Diego, returning Tue, Oct 28, priced at $174 found 4 days ago
Hawaiian Airlines
Mon, Oct 20 - Thu, Oct 23
IAH
Houston
SAN
San Diego
$216 Roundtrip, found 1 day ago
$216
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Mon, Oct 20 from Houston to San Diego, returning Thu, Oct 23, priced at $216 found 1 day ago

Find the cheapest month to fly from Houston (HOU) to San Diego (SAN)

August is typically the cheapest month to fly

From $74 - $224 per traveler.

Graph displaying average flight prices per month

Flights from Houston (IAH) to San Diego (SAN)
Origin airport
George Bush Intercontinental
Destination airport
San Diego Intl.
Airlines serving
American Airlines, Delta, Southwest Airlines
Roundtrip price
$154
Distance
1300 mi
Average flight time
3 hours 17 mins

Houston to San Diego Flights

The cheapest times to fly from Houston to San Diego

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Houston to San Diego are during the month of August. You can find some of the cheapest flights from Houston to San Diego with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Houston to San Diego

Sunday is one of the best days to book for cheap flights from Houston to San Diego: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Houston to San Diego

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Houston to San Diego in 2025. You can also book with separate airlines for your outbound and return journeys, from $81 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Houston to San Diego flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Houston to San Diego airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from William P. Hobby Airport (HOU) to San Diego Intl. Airport (SAN) cost?
You can find cheap return flights from William P. Hobby Airport (HOU) to San Diego Intl. Airport (SAN) starting at $149. Book a seat and start your adventure. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Southwest Airlines flight leaving HOU on August 5 2025 and touching down at SAN. The price was last updated on July 11 2025 and has not changed since.
What is the cheapest month to fly from HOU to SAN?
The cheapest flights from HOU to SAN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from William P. Hobby Airport (HOU) to San Diego Intl. Airport (SAN)?
Fly directly from William P. Hobby Airport (HOU) to San Diego Intl. Airport (SAN) on a Southwest Airlines flight.
What is the cheapest airline that flies from HOU to SAN?
With tickets starting at $75 for a one-way flight from HOU to SAN, Southwest Airlines is currently the cheapest airline flying this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from HOU on September 17 2025. Prices were last updated on July 11 2025 and have not changed since.
How many flights per day from William P. Hobby Airport (HOU) to San Diego Intl. Airport (SAN)?
With, on average, 2 nonstop flights departing from William P. Hobby Airport (HOU) to San Diego Intl. Airport (SAN) every day, you'll be off on your next adventure in no time.
What are the most popular departure times for flights from William P. Hobby Airport (HOU) to San Diego Intl. Airport (SAN)?
More passengers fly between HOU and SAN at 8 AM than at any other time of day. Rather skip the crowds? Try choosing a quieter departure window and it's possible you'll save on your ticket as well.
What day of the week has the most flights from HOU to SAN?
Friday has the most flights from William P. Hobby Airport (HOU) to San Diego Intl. Airport (SAN). Consider leaving on this day and you'll have the best chance of finding a departure that fits your itinerary.
What is the earliest flight from William P. Hobby Airport (HOU) to San Diego Intl. Airport (SAN)?
The earliest flight taking off from William P. Hobby Airport (HOU) is at around 8:50AM UTC-6. Board this flight and you'll arrive at San Diego Intl. Airport (SAN) at approximately 10:30AM UTC-8. The overall travel time is 3h 40m.
How long does it take to fly from William P. Hobby Airport (HOU) to San Diego Intl. Airport (SAN)?
It takes approximately 3 hours and 36 minutes to fly the 1,300 mi from HOU to SAN.
What airline has the least delays from HOU to SAN?
Southwest Airlines has the best performance for on-time direct flights from William P. Hobby Airport (HOU) to San Diego Intl. Airport (SAN), with an on-time score of 86%. Use the Expedia App to see your journey status before you take off and get notified of any changes.
What is the best time to fly from William P. Hobby Airport (HOU) to San Diego Intl. Airport (SAN)?
Choose a flight from William P. Hobby Airport (HOU) to San Diego Intl. Airport (SAN) that leaves before 3 PM to reduce the likelihood of delays. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for San Diego from William P. Hobby Airport (HOU)?
Check out your flight options from William P. Hobby Airport (HOU) to San Diego Intl. Airport (SAN). This is the only airport in San Diego you can arrive at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from William P. Hobby Airport (HOU) to San Diego Intl. Airport (SAN) last-minute?
Last-minute bookings from HOU to SAN are usually more expensive. To secure the best rates, start searching for flights well ahead of time. That being said, if you're flexible with your travel dates, it's possible to land a cheap ticket right before your journey.
Is it cheaper to book a HOU to SAN flight and hotel package?
Compared with arranging flights and hotels separately, booking a HOU to SAN flight and hotel package with Expedia could result in significant savings. What's more, having everything in one easy place will take the hassle out of travel planning. Just secure your flights and select from our wide range of stays, then personalize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from William P. Hobby Airport (HOU) to San Diego Intl. Airport (SAN)?
Generally, it's possible to cancel or reschedule your HOU to SAN flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

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