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Everything you should know

Cheapest round-trip
$242
Typical prices: $375-$541
Frontier
Wed 2/14Mon 2/19
IAH - SAN • 2 stops
Cheapest non-stop
$257
Typical prices: $405-$569
United Airlines
Sun 12/2Fri 12/7
IAH - SAN • Non-stop
Nonstop flights
You can fly direct with United Airlines and Southwest. Average duration is 3h 31m
Direct flights
+1
Direct flights
+1
Top routes
Cheapest • 1% average savings
Most popular
Insights
Insights
Avoid delays
Most punctual • 85% on-time
Best time • Fewest delays
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 12 weeks in advance save around 46% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 7% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $216 (round-trip)
Shortest trip • 5h 30m (one-way)
Insights
Insights
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We hope you love your trip to San Diego!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Houston to San Diego

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Houston to San Diego

Sun, Feb 14 - Fri, Feb 19
Frontier Logo
9:48 am - 7:38 pmIAH  Houston George Bush Intcntl-SAN San Diego
11h 50m2 stops Phoenix Sky Harbor Intl San Francisco
Frontier Logo
8:37 pm - 11:28 amSAN  San Diego-IAH Houston George Bush Intcntl
12h 51m1 stop Las Vegas Harry Reid Intl
$242Frontier
Fri, Feb 12 - Mon, Feb 15
Frontier Logo
9:22 pm - 11:58 pmIAH  Houston George Bush Intcntl-SAN San Diego
28h 36m1 stop Denver Intl
Frontier Logo
8:37 pm - 7:56 pmSAN  San Diego-IAH Houston George Bush Intcntl
21h 19m1 stop Las Vegas Harry Reid Intl
$245Frontier
Thu, Dec 17 - Tue, Dec 22
United Airlines Logo
7:00 am - 11:35 amIAH  Houston George Bush Intcntl-SAN San Diego
6h 35m1 stop Los Angeles
United Airlines Logo
3:45 pm - 8:59 pmSAN  San Diego-IAH Houston George Bush Intcntl
3h 14mnonstop
$247United Airlines
Thu, Dec 10 - Mon, Dec 14
United Airlines Logo
7:00 am - 11:15 amIAH  Houston George Bush Intcntl-SAN San Diego
6h 15m1 stop Los Angeles
United Airlines Logo
5:18 pm - 10:33 pmSAN  San Diego-IAH Houston George Bush Intcntl
3h 15mnonstop
$247United Airlines
Wed, Jan 6 - Mon, Jan 11
Southwest Logo
9:15 am - 1:30 pmHOU  Houston Hobby-SAN San Diego
6h 15m1 stop Kansas City
Southwest Logo
5:50 pm - 10:50 pmSAN  San Diego-HOU Houston Hobby
3h 00mnonstop
$247Southwest
Wed, Dec 2 - Wed, Dec 9
Southwest Logo
2:45 pm - 6:55 pmHOU  Houston Hobby-SAN San Diego
6h 10m1 stop New Orleans Louis Armstrong
Southwest Logo
5:50 pm - 10:55 pmSAN  San Diego-HOU Houston Hobby
3h 05mnonstop
$247Southwest
Fri, Jan 1 - Wed, Jan 6
Multiple Airlines Logo
9:21 pm - 12:29 pmIAH  Houston George Bush Intcntl-SAN San Diego
17h 08m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
8:30 am - 11:59 pmSAN  San Diego-IAH Houston George Bush Intcntl
13h 29m2 stops Las Vegas Harry Reid Intl Seattle/Tacoma Intl
$248Multiple Airlines
Sat, Dec 12 - Tue, Dec 15
American Airlines Logo
5:00 am - 8:33 amIAH  Houston George Bush Intcntl-SAN San Diego
5h 33m1 stop Dallas/Fort Worth
American Airlines Logo
9:32 am - 5:26 pmSAN  San Diego-IAH Houston George Bush Intcntl
5h 54m1 stop Phoenix Sky Harbor Intl
$257American Airlines
Wed, Jan 6 - Sat, Jan 9
American Airlines Logo
7:18 pm - 10:56 pmHOU  Houston Hobby-SAN San Diego
5h 38m1 stop Dallas/Fort Worth
American Airlines Logo
3:24 pm - 10:59 pmSAN  San Diego-HOU Houston Hobby
5h 35m1 stop Dallas/Fort Worth
$257American Airlines
Wed, Jan 27 - Sat, Jan 30
Delta Logo
7:00 am - 10:35 amIAH  Houston George Bush Intcntl-SAN San Diego
5h 35m1 stop Los Angeles
Delta Logo
6:25 am - 2:46 pmSAN  San Diego-IAH Houston George Bush Intcntl
6h 21m1 stop Los Angeles
$257Delta
Booking Insights

Price, demand and travel trends for Houston to San Diego flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

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

Round-trip flights from Houston to San Diego typically range from $375 to $541. The lowest price found in the past 5 days was $242, on Frontier.

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

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from Houston to San Diego. It’s 10% cheaper than the average day, while Sunday is the most expensive, with prices 15% higher.

What’s the cheapest month to fly from Houston to San Diego?

•September is the cheapest month to fly from Houston to San Diego at $418 round-trip.
•June ($486) and May ($478) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 16% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Houston to San Diego the cheapest?

Flights from Houston to San Diego are cheapest 12 weeks before departure. Booking in this window typically costs about 46% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Houston to San Diego

 
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.

Key details for Houston to San Diego flights

Low season

February

Cheapest flight

$50
Beat the crowds with an average 29% drop in travelers.
The most popular month to fly with an average 39% increase in travelers.
One-way flight from Houston George Bush Intcntl Airport to San Diego

When to book flights from Houston to San Diego

Are your dates flexible? Find out the best times to travel from Houston to San Diego based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Houston to San Diego flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from Houston to San Diego?

    These are the earliest and latest flight times available from Houston to San Diego:

    • Earliest: departs at 5:35 am and lands at 9:06 am
    • Latest: departs at 11:05 pm and lands at 2:36 am.

    The flight takes about 3h 31m.

  • What cabin classes can I book on flights from Houston to San Diego?

    Two cabin classes are available on flights from Houston to San Diego:

    • Economy Class
    • First Class

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

    A nonstop flight from Houston to San Diego takes 3h 31m, covering 1,303 miles.

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

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Houston to San Diego flight?

    Round-trip flights from Houston to San Diego range from $375 to $541, with an average of $451 over the past 12 months. Anything below $375 counts as a good deal.

  • How expensive are last-minute Houston to San Diego flights?

    Last-minute fares on this route (booked within two weeks of departure) run 67% above the $451 route average. Book 12 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Houston to San Diego?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $216 round-trip via Atlanta Hartsfield-Jackson (ATL), compared to $474 for nonstop.

  • How does on-time performance compare across airlines flying from Houston to San Diego?

    United Airlines is the only airline operating Houston to San Diego flights. 85% of its flights are on time.

  • What is the standard checked-bag allowance on flights from Houston to San Diego?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$90 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • How are flight departures from Houston to San Diego spread across the day?

    Morning is the busiest departure period on Houston to San Diego flights, with 38% of flights leaving in that window. Afternoon departures account for 37%, evening flights for 25%, and night flights for 0%.

  • Which airlines offer Wi-Fi on Houston to San Diego flights?

    JetBlue is the only airline on the Houston to San Diego route offering in-flight Wi-Fi. Pricing depends on fare class.

  • How are flight prices from Houston to San Diego looking right now?

    One-way fares from Houston to San Diego are currently lower than usual. Average one-way flight prices are about $114, which is 54% below the typical average for this route.

  • What car rental options are available at San Diego Airport (SAN)?

    San Diego Airport (SAN) hosts 5 major car rental companies, with daily rates averaging $53 for economy cars. Top options include:

    • Dollar
    • Europcar
    • Payless
    • Hertz
    • Thrifty

  • Which airports can I use when flying from Houston to San Diego?

    Flights from Houston to San Diego may depart from several airports in Houston area, including Houston Hobby (HOU) and Houston George Bush Intcntl (IAH). Flights usually arrive at San Diego (SAN).

  • What time of day has the fewest delays on flights from Houston to San Diego?

    Afternoon flights have the fewest delays on this route, while evening departures tend to have the most.

  • At what point is a flight considered delayed from Houston to San Diego?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Houston to San Diego route, 15% of flights were delayed in the past 3 months, with delays averaging 2h 20m.

  • Which airports do connecting flights from Houston to San Diego pass through?

    One-stop flights from Houston to San Diego most commonly connect through:

    • Denver Intl (DEN) - 66% of one-stop connections
    • Phoenix Sky Harbor Intl (PHX) - 17% of one-stop connections
    • Las Vegas Harry Reid Intl (LAS) - 11% of one-stop connections
    • Dallas/Fort Worth (DFW) - 2% of one-stop connections

  • Can I save money by using flexible dates for flights from Houston to San Diego?

    Yes. Flexible dates can save you up to 22% on flights from Houston to San Diego. Tuesday is the cheapest departure day at $409 round-trip on average, while Sunday is the most expensive at $519, a difference of $110.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from Houston to San Diego?

    2 airlines operate flights between Houston and San Diego. The airlines offering nonstop flights on this route include:

    • United Airlines
    • Southwest

  • How much time can I save by choosing a different layover airport from Houston to San Diego?

    Flying via Dallas/Fort Worth (DFW) gives the shortest average 1-stop total travel time at 5h 30m, compared with 5h 58m via Los Angeles (LAX) and 6h 08m via Salt Lake City (SLC).

  • What is the time difference between Houston and San Diego?

    San Diego is 2 hours behind Houston (Pacific Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in San Diego?

    Some of the most popular sights in San Diego are Gaslamp Quarter, San Diego Convention Center and SeaWorld San Diego. These are among the most viewed places in San Diego on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Houston to San Diego flights?

    Among airlines operating Houston to San Diego flights:

    • United Airlines: offers extra legroom; offers free seat selection
    • Southwest: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Houston to San Diego flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • United Airlines: a cabin bag and a checked bag in Economy Class
    • Southwest: a cabin bag and a checked bag in Economy Class
    • JetBlue: a cabin bag in Economy Class class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

Your guide to booking Houston to San Diego flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure and avoid flying on Sunday. On this route, Tuesday flights average $409, about $110 less than Sunday fares (21% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 12 weeks before you fly. On this route, that window historically saves about 46% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Houston to San Diego trip for September. Fares historically average $418 round-trip in that month - typically $68 less than the most expensive month, which is June (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Atlanta Hartsfield-Jackson Airport (ATL) can be cheaper than flying direct. The cheapest layover option averages $216 round-trip on this route - about $257 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to San Diego Airport.

    • Courtyard by Marriott San Diego Downtown Little Italy
    • Bay Club Hotel & Marina
    • Wyndham San Diego Bayside

Prefer to fly direct from Houston to San Diego?

 
Find which airlines fly direct from Houston to San Diego Airport, which days they fly and book direct flights.

Direct departures

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

Direct returns

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

More options for your flight from Houston to San Diego

Complete your trip to San Diego with a hotel stay or car rental