$71 Cheap Flights from Houston (IAH) to San Diego (SAN)

View $71 flight on Wed, May 21, 2025Opens in a new window

Popular airlines from George Bush Intercontinental Airport (IAH) to San Diego Intl. Airport (SAN)

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Find available prices by choosing your travel dates.

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

Prices were available within the past 7 days and start at $71 for one-way flights and $142 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Tue, May 13 - Tue, May 20
IAH
Houston
SAN
San Diego
$142 Roundtrip, found 14 hours ago
$142
Roundtrip
found 14 hours ago
Select Spirit Airlines flight, departing Tue, May 13 from Houston to San Diego, returning Tue, May 20, priced at $142 found 14 hours ago
Spirit Airlines
Tue, May 13 - Tue, May 20
IAH
Houston
SAN
San Diego
$143 Roundtrip, found 14 hours ago
$143
Roundtrip
found 14 hours ago
Select Spirit Airlines flight, departing Tue, May 13 from Houston to San Diego, returning Tue, May 20, priced at $143 found 14 hours ago
Spirit Airlines
Wed, May 21 - Fri, May 23
IAH
Houston
SAN
San Diego
$154 Roundtrip, just found
$154
Roundtrip
just found
Select Spirit Airlines flight, departing Wed, May 21 from Houston to San Diego, returning Fri, May 23, priced at $154 just found
Spirit Airlines
Tue, May 6 - Thu, May 8
IAH
Houston
SAN
San Diego
$155 Roundtrip, just found
$155
Roundtrip
just found
Select Spirit Airlines flight, departing Tue, May 6 from Houston to San Diego, returning Thu, May 8, priced at $155 just found
Spirit Airlines
Sun, May 4 - Tue, May 6
IAH
Houston
SAN
San Diego
$159 Roundtrip, just found
$159
Roundtrip
just found
Select Spirit Airlines flight, departing Sun, May 4 from Houston to San Diego, returning Tue, May 6, priced at $159 just found
Frontier Airlines
Sun, May 4 - Tue, May 6
IAH
Houston
SAN
San Diego
$164 Roundtrip, just found
$164
Roundtrip
just found
Select Frontier Airlines flight, departing Sun, May 4 from Houston to San Diego, returning Tue, May 6, priced at $164 just found
Spirit Airlines
Mon, Jun 9 - Wed, Jun 11
IAH
Houston
SAN
San Diego
$166 Roundtrip, just found
$166
Roundtrip
just found
Select Spirit Airlines flight, departing Mon, Jun 9 from Houston to San Diego, returning Wed, Jun 11, priced at $166 just found
United
Wed, Jul 2 - Fri, Jul 4
IAH
Houston
SAN
San Diego
$323 Roundtrip, just found
$323
Roundtrip
just found
Select United flight, departing Wed, Jul 2 from Houston to San Diego, returning Fri, Jul 4, priced at $323 just found
American Airlines
Thu, May 29 - Sat, May 31
IAH
Houston
CLD
Carlsbad
$339 Roundtrip, just found
$339
Roundtrip
just found
Select American Airlines flight, departing Thu, May 29 from Houston to Carlsbad, returning Sat, May 31, priced at $339 just found
Delta
Thu, Jul 3 - Sat, Jul 5
IAH
Houston
SAN
San Diego
$343 Roundtrip, just found
$343
Roundtrip
just found
Select Delta flight, departing Thu, Jul 3 from Houston to San Diego, returning Sat, Jul 5, priced at $343 just found
Flights from Houston (IAH) to San Diego (SAN)
Origin airport
George Bush Intercontinental
Destination airport
San Diego Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Spirit Airlines, United
Roundtrip price
$142
Distance
1300 mi

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 May. 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 $71 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 George Bush Intercontinental Airport (IAH) to San Diego Intl. Airport (SAN) cost?
Find cheap return fares from George Bush Intercontinental Airport (IAH) to San Diego Intl. Airport (SAN) starting at $323. Snag a seat and get ready to go. 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 United flight leaving IAH on May 11 2025 and touching down at SAN. The price was last updated on April 15 2025 and has not changed since.
What is the cheapest month to fly from IAH to SAN?
The cheapest flights from IAH 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 George Bush Intercontinental Airport (IAH) to San Diego Intl. Airport (SAN)?
When heading out of George Bush Intercontinental Airport (IAH), you can jump on a direct flight to San Diego Intl. Airport (SAN) with United Airlines.
What is the cheapest airline that flies from IAH to SAN?
Take off from IAH to SAN with United. This carrier currently offers the cheapest one-way fare for this route, starting at $162. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from IAH on July 1 2025. Prices were last updated on April 15 2025 and have not changed since.
How many flights per day from George Bush Intercontinental Airport (IAH) to San Diego Intl. Airport (SAN)?
When taking off from George Bush Intercontinental Airport (IAH), you’ll have a choice from an average of 4 daily nonstop flights to San Diego Intl. Airport (SAN).
What are the most popular departure times for flights from George Bush Intercontinental Airport (IAH) to San Diego Intl. Airport (SAN)?
The 12 PM departures from IAH to SAN are the most sought after. Greater demand means you’ll likely pay more for these departures. If you want to save money, choose a less crowded time to fly.
What day of the week has the most flights from IAH to SAN?
If you depart on a Saturday, you’ll get the largest range of choices for flights from George Bush Intercontinental Airport (IAH) to San Diego Intl. Airport (SAN).
What is the earliest flight from George Bush Intercontinental Airport (IAH) to San Diego Intl. Airport (SAN)?
Hop on the earliest flight at around 9:30AM UTC-6, leaving from George Bush Intercontinental Airport (IAH). You’ll be in the air for about 3h 37m, arriving at San Diego Intl. Airport (SAN) at approximately 11:07AM UTC-8.
How long does it take to fly from George Bush Intercontinental Airport (IAH) to San Diego Intl. Airport (SAN)?
The average flight time from IAH to SAN is 3 hours and 39 minutes, covering a distance of 1,300 mi.
What airline has the least delays from IAH to SAN?
With 86% of flights generally landing on time, United Airlines has the best on-time performance for direct flights from George Bush Intercontinental Airport (IAH) to San Diego Intl. Airport (SAN). To keep track of your flight status and get notifications if anything changes, head to the Expedia App.
What is the best time to fly from George Bush Intercontinental Airport (IAH) to San Diego Intl. Airport (SAN)?
Select a flight from George Bush Intercontinental Airport (IAH) to San Diego Intl. Airport (SAN) that takes off before 3 PM to reduce the risk of cancellations. Later departures are on average 22% more likely to be canceled.**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 George Bush Intercontinental Airport (IAH)?
Explore your flight options from George Bush Intercontinental Airport (IAH) 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 George Bush Intercontinental Airport (IAH) to San Diego Intl. Airport (SAN) last-minute?
Booking your plane ticket from IAH to SAN just before your getaway is typically more expensive. However, if you’re flexible with your travel times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book an IAH to SAN flight and hotel package?
Compared with arranging flights and hotels separately, booking an IAH to SAN flight and hotel package with Expedia could result in significant savings. Better still, having it all in one place will take the stress out of planning your trip. Just pick your flights and select from our extensive range of hotels, then customize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from George Bush Intercontinental Airport (IAH) to San Diego Intl. Airport (SAN)?
If you reserved your IAH to SAN flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you want more information.

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*Available to One Key members.