$135 Find Cheap Flights from San Diego to Houston - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Diego to Houston departing on 11/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$251
Typical prices: $269-$473
Frontier
Sat 8/15Mon 8/24
SAN - IAH • 1 stop
Cheapest non-stop
$259
Typical prices: $381-$512
United Airlines
Sat 8/29Sun 9/6
SAN - IAH • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
United Economy Plus adds up to 6 inches more legroom than standard economy.
Southwest free carry-on helps offset new checked bag fees on this route.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $251 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Southwest and United Airlines. Average duration is 3h 19m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top routes
Cheapest • 11% average savings
Most popular
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 38% compared to booking last minute.
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Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Diego to Houston that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Diego to Houston

Sat, Aug 15 - Mon, Aug 24
Frontier Logo
4:28 pm - 1:59 pm
SAN
-
IAH
19h 31m
1 stop
Frontier Logo
10:04 pm - 9:05 am
IAH
-
SAN
13h 01m
1 stop
$251Frontier
Sat, Aug 15 - Mon, Aug 24
Frontier Logo
4:28 pm - 1:59 pm
SAN
-
IAH
19h 31m
1 stop
Frontier Logo
10:04 pm - 9:05 am
IAH
-
SAN
13h 01m
1 stop
$251Frontier
Thu, Nov 5 - Sun, Nov 15
Frontier Logo
6:25 am - 12:09 am
SAN
-
IAH
15h 44m
1 stop
Frontier Logo
10:30 pm - 9:02 am
IAH
-
SAN
12h 32m
1 stop
$251Frontier
Sat, Aug 29 - Mon, Aug 31
Southwest Logo
6:35 am - 4:55 pm
SAN
-
HOU
8h 20m
2 stops
Southwest Logo
10:00 am - 1:25 pm
HOU
-
SAN
5h 25m
1 stop
$252Southwest
Sat, Oct 3 - Mon, Oct 5
Southwest Logo
8:10 am - 4:45 pm
SAN
-
HOU
6h 35m
2 stops
Southwest Logo
5:00 pm - 8:55 pm
HOU
-
SAN
5h 55m
1 stop
$252Southwest
Thu, Nov 12 - Thu, Nov 12
Delta Logo
6:15 am - 2:32 pm
SAN
-
IAH
6h 17m
1 stop
Delta Logo
7:41 pm - 11:53 pm
IAH
-
SAN
6h 12m
1 stop
$257Delta
Thu, Aug 27 - Thu, Sep 3
American Airlines Logo
12:06 pm - 7:44 pm
SAN
-
HOU
5h 38m
1 stop
American Airlines Logo
8:14 pm - 11:59 pm
HOU
-
SAN
5h 45m
1 stop
$257American Airlines
Thu, Sep 3 - Mon, Sep 7
Southwest Logo
4:45 pm - 12:10 am
SAN
-
HOU
5h 25m
1 stop
Southwest Logo
6:30 am - 10:20 am
HOU
-
SAN
5h 50m
1 stop
$257Southwest
Sat, Aug 29 - Sun, Sep 6
United Airlines Logo
3:04 pm - 8:19 pm
SAN
-
IAH
3h 15mnonstop
United Airlines Logo
9:33 am - 10:55 am
IAH
-
SAN
3h 22mnonstop
$259United Airlines
Sat, Aug 29 - Sun, Sep 6
United Airlines Logo
11:00 am - 7:06 pm
SAN
-
IAH
6h 06m
1 stop
United Airlines Logo
7:56 pm - 9:25 pm
IAH
-
SAN
3h 29mnonstop
$269United Airlines
Booking Insights

KAYAK's insights & trends for San Diego to Houston flights

Get data-powered insights and trends into flights from San Diego to Houston to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from San Diego to Houston?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Diego to Houston departing in August.

Flight prices are below average for this route right now.

Flights to Houston from San Diego usually cost between $257 and $465 in August.
The lowest price found in the past 5 days was $251 on Frontier (Aug 15-Aug 24).

What is the cheapest San Diego to Houston flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from San Diego to Houston costs $210 on the route between San Diego (SAN) and Houston Hobby Airport (HOU). Over the past month, this route was, on average, 11% cheaper than other San Diego-Houston routes. The most popular route is between San Diego (SAN) and Houston George Bush Intcntl Airport (IAH).

What’s the cheapest day of the week to fly from San Diego to Houston?

The average price of all round-trip flights from San Diego to Houston clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from San Diego to Houston, look for departures on Wednesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Houston, Wednesday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Diego to Houston, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Diego to Houston is August, where tickets cost $369 (return) on average. On the other hand, the most expensive months are June and March, where the average cost of round-trip tickets is $513 and $487 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Diego to Houston, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Diego to Houston, you should book around 4 weeks before departure, which saves you about 38% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Expert advice

Expert advice for your flight from San Diego to Houston

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Blane Bachelor

Blane Bachelor

Expert on Southwest

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.

Brandon Schultz

Brandon Schultz

Expert on SAN

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

John Walton

John Walton

Expert on IAH

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Yulia Denisyuk

Yulia Denisyuk

Expert on HOU

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Good to know

Cheapest flight

$135
Flight from San Diego to Houston George Bush Airport

When to book flights from San Diego to Houston

Are your dates flexible? Find out the best times to travel from San Diego to Houston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Diego to Houston

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

    In the last 5 days, the lowest price for a flight from San Diego to Houston was $135 for a one-way ticket and $251 for a round-trip.

  • Do I need a passport to fly between San Diego and Houston?

    Yes, you'll most likely have to show a valid passport before boarding the plane in San Diego and on arrival in Houston.

  • Which aircraft models fly most regularly from San Diego to Houston?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Diego to Houston?

    Star Alliance is the only airline alliance operating flights between San Diego and Houston.

  • What is the most popular layover when flying to Houston from San Diego?

    Las Vegas is the most popular layover city among KAYAK users traveling from San Diego to Houston.

  • How does KAYAK find such low prices on flights from San Diego to Houston?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Diego to Houston.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Diego to Houston?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Houston from San Diego is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Diego to Houston?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Houston with an airline and back to San Diego with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Diego to Houston?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Houston from San Diego up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prefer to fly direct from San Diego to Houston?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from San Diego to Houston.
Find which airlines fly direct from San Diego Airport to Houston, which days they fly and book direct flights.

Direct departures

San Diego to Houston

Monday

Southwest,United Airlines

Southwest,United Airlines

Tuesday

Southwest,United Airlines

Southwest,United Airlines

Wednesday

Southwest,United Airlines

Southwest,United Airlines

Thursday

Southwest,United Airlines

Southwest,United Airlines

Friday

Southwest,United Airlines

Southwest,United Airlines

Saturday

Southwest,United Airlines

Southwest,United Airlines

Sunday

Southwest,United Airlines

Southwest,United Airlines

See more direct flights

Direct returns

Houston to San Diego

Monday

Southwest,United Airlines

Southwest,United Airlines

Tuesday

Southwest,United Airlines

Southwest,United Airlines

Wednesday

Southwest,United Airlines

Southwest,United Airlines

Thursday

Southwest,United Airlines

Southwest,United Airlines

Friday

Southwest,United Airlines

Southwest,United Airlines

Saturday

Southwest,United Airlines

Southwest,United Airlines

Sunday

Southwest,United Airlines

Southwest,United Airlines

See more direct flights

Reviews of the top 3 airlines serving from San Diego to Houston

 
See real verified KAYAK customer reviews for airlines flying from San Diego to Houston. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Diego to Houston? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4230 reviews
8.1Boarding
8.6Crew
8.0Comfort
7.5Entertainment
7.0Food
Airline reviews

Red eye from San Diego. Temperature of the cabin was way too warm and the air duct flowed very little air.

6.0 GoodGordon, Jul 2026
SAN - MCO
Read more Southwest reviews

Red eye from San Diego. Temperature of the cabin was way too warm and the air duct flowed very little air.

Great job Southwest! My family doesn't fly often but we felt safe the whole time.

Comfortable. Easy. No problems. Just wish they had gf options for snacks.

The charges were ridiculous for an hour flight and the turbulence was very scary.

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Service was great, boarding and exiting went smoothly, and the flight was very pleasant.

The crew and flight went well. My issue was internal communications. I had a connecting flight that initially was changed to a later time since first flight was delayed, then they changed back to original time because “the captain thought hed make it”. Upon arrival at connecting airport, the flight attendant assured that the connecting flight was still there and I should run to the gate after deplaning…well that was inaccurate. The plane had departed and gate was empty. I was stuck at airport 4 hours hungry and irritated and also had to again cancel my transportation plans at destination. After informing the help desk I was given a dry oh well and a measly $15 food voucher that barely could afford anything at that airport.

There were over 40 people in the “preboard” group. It’s not fair for southwest to charge for an upgraded boarding fee (a1-a15) and then let over 40 people board before.

Boarded from a very small gate at LAX. Staff at gate had us line up, then waited 25 minutes to board without a word of explanation. Plane arrived on time then waited 20 minutes for a plane to vacate our gate. Majority of bags arrived after 15 minutes but it took an hour for a small number of remaining bags to be off-loaded despite my “priority” bag tag.

The boarding process on the departure from LA was rather slow even though I was in Group 1. For first class, I was not expecting to have to pay for Wi-fi but I did and then the wi-fi was spotty. The entree was surprisingly good and so that was a pleasant surprise. However, once I got to Houston, it was terrible. Unfortunately there was bad weather but the constant gate changes for my connecting flight was difficult to manage due to having to navigate back and forth between different terminals.

No screens or meal options. Freezing cold. Dirty seats. Left late.

Boarding was again a "free for all". We were boarding group 4, and almost the entire plane was able to board before us. It's a shame that someone who follows the rules, gets the short end of the stick. Not fair.

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

Complimentary light meal would be appreciated. But great flight crew service on all legs

I boarded flight UA#1318 at Sacramento International Airport going back to Houston TX. The flight was scheduled at 5:10am. I was able to check in virtually using the United Airlines app. When I entered the airport, there was no one outside assisting with checked bags as it was for Delta Airlines. Immediately upon entering, there was a LONG, EXTREMELY LONG line to the kiosks to get boarding passes. I stand in line to get boarding passes then had to move to ANOTHER EXTREMELY LONG line to get my bags checked in. While standing in this line, we noticed an agent taking customers to 3 at a time to her station to check their bags in. Lucky for me, she called me back, checked my bags for me and I was on my way. I then encountered another long line at the TSA check and to avoid I ending up having to sign up for CLEAR to bypass it. So glad, I did.,...Both of my flights were great with no issues, butthe check in progress at Bush Airport was so much smoother. Check-in at SMF airport needs to be anaylzed and corrected. Do better United, I know you can....thanks

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

We had an awful experience getting our bags checked in. Frontier’s check in on the app manipulated us into buying the business package because that was the only option available for a checked bag which included two checked bags per person which we did not need. Upon arriving to the airport, we stood in line for what seemed like forever at the baggage check in and there was no one available at the counter. We were first in line and we were afraid we were going to miss our flight due to the baggage attendant being late. After realizing there were a lot of other people waiting at the baggage check in and no one available. I reached out to Frontier and could not get any customer service so I had to call the airport to page the baggage attendant to send someone to the counter to check in our bags before we were able to go through security , I finally spoke to the attendant at the counter and explained to her that we had to pay for two checked bags person a total of six bags when we only had a total of three bags between three people she said to reach out to Frontier and they would issue a refund for the three bags that we paid for and did not need. I reached out to Frontier which I was not able to reach anybody by phone so I had to go through their automated chat feature, which sent me around in circles until I finally reached a representative to assist me. I explained to them what happened and they explained that they were not able to assist me. I continued to push the issue with them as this was very frustrating and they finally put in a customer service ticket where we were issued a flight credit and we were so disappointed because after this experience, we NEVER want to fly Frontier again, and we do not want a credit that we will not use. Frontier charged us almost $500 for us to check three bags which is absolutely absurd! The customer service agents were not able to offer anything else other than a flight credit and I do not feel like my frustrations were truly heard , we will never use Frontier Airlines again ! Truly Theft by Manipulation! They should be ashamed!

Every day about it was very different all the boarding pass where all wrong l miss flight no refund all crazy

The trip was good but the last minute changes I didn’t like because I had already talked to the attendee and they didn’t help me with my ticket I was having trouble checking in and when the time was up they help me but charge me for that and last minute luggage it was a small bag. After I was in the airplane I realized you were charging because the flight was almost empty and you have to get the money some how. Thanks for everything.

Our flight was delayed by four hours without notice, the app for getting my boarding pass is super confusing, and I wasn’t able to check a suitcase without paying for a higher cost package

First the gate was a total nightmare-no chairs anywhere! So over crowded and only one bathroom and nightmare of food service - took forever and NOT one place to sit. No inflight entertainment and had to pay 60.00 for a small carry on. I will never fly Frontier again!

I didn't like anything about the flight It was my first time and definitely my last time boarding a frontier flight. Their counter agents need training and they need to learn to communicate regularly and respectfully

Flight was 3 hours late leaving. Poor communication from the staff about delays. Impossible to get in touch with customer service (by design). And it actually didn't come out to be much cheaper than a non-budget airline! Not worth the headache, I'm never flying Frontier again

I did not enjoy the trip home on Frontier for several reasons: there is too much cost besides the flight, which was more than I would normally pay, then having to pay for luggage, and carry-on, seat (if you want to reserve when booking) then you must pay over $3 for a can of soda, and $4 for a snack. A cup of water is free.

Flight was delay 9hrs and nothing was provided at airport, had to go and get a room to sleep in, paid for Uber back and fort with no offers until we landed back home a 1hr later for a $75 voucher for a future flight.

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

Information on your arrival and departure airports