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San Diego

$87+ Cheap flights from Houston to San Diego (SAN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — SAN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Houston to San Diego are usually found in September or November, booked 76 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Houston to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Houston (HO1) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$191
(Kiwi.com)

One-way from

$87
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$318
From Houston to San Diego
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One-way flight from Houston to San Diego
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High demand for flights, 4% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Houston to San Diego

Cheapest flights from Houston to San Diego
Explore the most affordable flight options available from Houston to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/259:26 pmIAH - SAN
1 stop12h 03mSpirit Airlines
Sat 10/46:15 amSAN - IAH
1 stop8h 28mSpirit Airlines
Deal found 9/8$191
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/710:12 pmIAH - SAN
2 stops25h 08mMultiple Airlines
Tue 10/148:00 amSAN - IAH
1 stop28h 07mMultiple Airlines
Deal found 9/9$194
This CheapOair deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/277:20 amIAH - SAN
1 stop17h 04mFrontier
Sat 10/252:24 pmSAN - IAH
1 stop6h 46mFrontier
Deal found 9/10$195
This Booking.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/229:08 pmIAH - SAN
1 stop27h 16mFrontier
Fri 9/266:35 amSAN - IAH
1 stop15h 04mFrontier
Deal found 9/8$197
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/86:44 amIAH - SAN
2 stops16h 36mMultiple Airlines
Thu 10/96:25 amSAN - IAH
1 stop7h 14mMultiple Airlines
Deal found 9/9$198
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2711:59 amIAH - SAN
2 stops13h 35mMultiple Airlines
Sat 10/252:24 pmSAN - IAH
1 stop6h 46mMultiple Airlines
Deal found 9/9$200
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/257:10 amIAH - SAN
2 stops18h 07mMultiple Airlines
Fri 10/36:15 amSAN - IAH
1 stop8h 28mMultiple Airlines
Deal found 9/8$201
This CheapOair deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/114:42 pmIAH - SAN
1 stop7h 43mFrontier
Wed 10/156:41 amSAN - IAH
1 stop14h 55mFrontier
Deal found 9/10$202
This Cheapflightsfares deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/279:26 pmIAH - SAN
1 stop12h 03mSpirit Airlines
Mon 9/291:35 pmSAN - IAH
1 stop14h 15mSpirit Airlines
Deal found 9/11$203
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/229:26 pmIAH - SAN
1 stop25h 58mMultiple Airlines
Fri 9/261:35 pmSAN - IAH
2 stops19h 34mMultiple Airlines
Deal found 9/10$205
This CheapOair deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/167:30 amIAH - SAN
1 stop16h 54mFrontier
Tue 9/237:15 amSAN - IAH
1 stop11h 59mFrontier
Deal found 9/8$207
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/48:00 amHOU - SAN
Nonstop3h 30mSouthwest
Tue 11/45:40 pmSAN - HOU
Nonstop3h 05mSouthwest
Deal found 9/10$220

Cheapflights Fare Finder

 
Customize your flight search to find flights from Houston to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Houston to San Diego that are best for you.

Fly from

Houston

Fly to

San Diego

Route

Depart

Return

Price

HoustonSan Diego

IAH - SAN

IAHSAN

Houston George Bush Intcntl

Sun 9/28

9:26 pm-7:29 am

1 stop12h 03m

San Diego

Tue 9/30

1:35 pm-4:30 am

2 stops12h 55m

$203

HoustonSan Diego

HOU - SAN

HOUSAN

Houston Hobby

Tue 11/4

8:00 am-9:30 am

Nonstop3h 30m

San Diego

Tue 11/4

5:40 pm-10:45 pm

Nonstop3h 05m

$220

HoustonSan Diego

HOU - SAN

HOUSAN

Houston Hobby

Wed 10/29

3:00 pm-5:35 pm

1 stop4h 35m

San Diego

Tue 11/11

5:40 pm-10:45 pm

Nonstop3h 05m

$225

HoustonSan Diego

HOU - SAN

HOUSAN

Houston Hobby

Wed 10/29

3:00 pm-5:35 pm

1 stop4h 35m

San Diego

Tue 11/4

7:00 am-12:10 pm

Nonstop3h 10m

$225

HoustonSan Diego

IAH - SAN

IAHSAN

Houston George Bush Intcntl

Sun 9/21

9:26 pm-7:29 am

1 stop12h 03m

San Diego

Sat 9/27

1:35 pm-5:50 am

1 stop14h 15m

$228

HoustonSan Diego

IAH - SAN

IAHSAN

Houston George Bush Intcntl

Sat 11/15

4:54 pm-6:24 pm

Nonstop3h 30m

San Diego

Wed 11/19

5:50 pm-11:03 pm

Nonstop3h 13m

$229

HoustonSan Diego

IAH - SAN

IAHSAN

Houston George Bush Intcntl

Tue 10/7

2:20 pm-3:42 pm

Nonstop3h 22m

San Diego

Sat 10/11

10:15 am-3:35 pm

Nonstop3h 20m

$229

HoustonSan Diego

IAH - SAN

IAHSAN

Houston George Bush Intcntl

Tue 12/9

2:45 pm-4:16 pm

Nonstop3h 31m

San Diego

Sat 12/13

10:23 am-3:35 pm

Nonstop3h 12m

$229

HoustonSan Diego

IAH - SAN

IAHSAN

Houston George Bush Intcntl

Sun 9/21

5:07 pm-10:26 pm

2 stops31h 19m

San Diego

Sat 9/27

1:35 pm-5:50 am

1 stop14h 15m

$231

HoustonSan Diego

IAH - SAN

IAHSAN

Houston George Bush Intcntl

Sat 10/4

2:20 pm-3:42 pm

Nonstop3h 22m

San Diego

Sat 10/11

7:28 pm-5:46 am

1 stop8h 18m

$235

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 41 results
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The best insider tips for Houston to San Diego flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Houston to San Diego trip
Airlines
United Airlines

Basic Economy allows a personal item only; no carry-on bags without extra fees.


Economy Plus offers extra legroom seats towards the front of the economy cabin.

Read more about United Airlinesby Harriet Baskas
Spirit Airlines

Spirit's Big Front Seats offer 11 inches more legroom and larger tray tables.


Spirit's self-service bag drop saves time; print your boarding pass in advance.

Read more about Spirit Airlinesby Daniel Scheffler
Airports
IAH

Check security wait times on IAH's website to plan your arrival. This helps avoid delays and ensures a smooth departure process.

Read more about IAHby Evie Carrick
HOU

HOU offers valet parking near the terminal entrance, saving time compared to self-parking. It's not much more expensive than garage parking.

Read more about HOUby Scott Laird
SAN

Use the San Diego Flyer shuttle for a free ride between SAN and Old Town Transit Center, running every 20-30 minutes.

Read more about SANby Blane Bachelor
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Daniel Scheffler

Daniel Scheffler

Expert on Spirit Airlines

Daniel Scheffler

Daniel Scheffler

Daniel Scheffler is a travel writer, podcaster, and producer. Born in Africa, bred in Europe and now living in America he has traveled to 140 countries (and all 50 U.S. states). Plus he has stayed at over 2500 hotels across the globe. His original shows Everywhere and Without Maps (available on Spotify) showcase his beliefs, travel is about humanity and sharing that beauty. And thus it reminds you that you shouldn’t believe everything you think.

Read more
Blane Bachelor

Blane Bachelor

Expert on SAN

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Evie Carrick

Evie Carrick

Expert on IAH

Evie Carrick

Evie Carrick

Evie Carrick is a writer and editor who has lived in five countries and traveled to over 50, with extensive experience flying around the world. She was born in Colorado, but has spent time flying to both coasts to visit family. She writes regularly for Travel + Leisure, BuzzFeed, and SKI and recently published seven travel journals with Simon & Schuster.

Read more
Scott Laird

Scott Laird

Expert on HOU

Scott Laird

Scott Laird

Originally from Anchorage, Alaska, Scott is a frequent contributor to Fodor’s Travel Guide, Conde Nast Traveler, TravelAge West, and TravelPulse. He holds a Bachelor of Science in Organizational Management from Alaska Pacific University and a Master of Science in Airline Management from Embry-Riddle Aeronautical University, and has worked in the airline and hotel industries and as a travel consultant.

Read more

Best time to book a flight from Houston to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Houston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Houston to San Diego

How far ahead should I book a flight from Houston to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from Houston to San Diego. Price data was last updated on August 29, 2025.

The best time to book flights from Houston to San Diego is 76 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Houston to San Diego?

Currently, August is the cheapest month in which you can book a flight from Houston to San Diego (average of $286). Flying from Houston to San Diego in March is currently the most expensive (average of $366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from HOU to SAN?

Find hourly flight availability from Houston to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

When flying from Houston to San Diego, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 17% versus a flight at noon.

What is the cheapest day to fly from Houston to San Diego?

Use this chart to determine the cheapest time to fly round-trip from Houston to San Diego. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Houston to San Diego flight should consider departing on Wednesday at noon when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated September 11, 2025.
See what other customers who have flown with Southwest, United Airlines, and American Airlines from Houston to San Diego have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Spirit Airlines
6.3
Okay
8,023 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Houston to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Diego from Houston?

    San Diego (SAN), located 2.6 mi from the city center, is the airport you fly into when you book flights from Houston to San Diego. 5 airlines have flights to San Diego from Houston on a regular basis. Booking flights from Houston to San Diego should not be difficult; the airport handles an average of 1 inbound flight from Houston per day.

  • How long is the flight from Houston to San Diego?

    Spirit Airlines, Southwest, and United Airlines can get you from Houston to San Diego in just under 3h 30m. Your travel time can differ by up to 8h 33m. There are 1310 mi between Houston and San Diego. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Houston to San Diego round-trip?

    According to our current data, Frontier ($113), Spirit Airlines ($129), and American Airlines ($188) offers the cheapest pricing from Houston to San Diego. Frontier is priced at 70% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Houston to San Diego one-way?

    The cheapest airlines for a one-way flight from Houston to San Diego are Frontier ($89), United Airlines ($91), and Spirit Airlines ($92).

  • What are the cheapest flights from Houston to San Diego?

    While on average a flight from Houston to San Diego is generally $317, our data shows the cheapest flight currently is $150. When looking at the most popular route, (Houston Hobby - San Diego), you can expect to pay $122 for that flight.

  • Can I find deals for flights from Houston to San Diego that include hotel bookings?

    Yes. In addition to deals on Houston to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Houston to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Houston to San Diego.

  • Can I find deals for business class flights from Houston to San Diego?

    Yes. Cheapflights offers flight deals from Houston to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Houston to San Diego?

    Currently, August is the cheapest month in which you can book a flight from Houston to San Diego (average of $286). Flying from Houston to San Diego in March is currently the most expensive (average of $366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
La Mesa
Poway
Lemon Grove
Coronado
Imperial Beach
National City
Alpine

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Alternative routes for Houston to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Houston to San Diego

Discover the top 5 airlines that operate flights from Houston to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$113Average$190FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$129Average$224FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$188Average$459FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$248Average$484FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$267Average$433FlexibilityNo cancel feeOn-time63%

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