$159 Cheap United flights San Diego (SAN) to Houston (IAH)

View $159 flight on Tue, Nov 18, 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

$159 Cheap United flights San Diego (SAN) to Houston (IAH)

Prices were available within the past 7 days and start at $159 for one-way flights and $317 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Nov 18 - Wed, Nov 19
SAN
San Diego
IAH
Houston
$317 Roundtrip, found 9 hours ago
$317
Roundtrip
found 9 hours ago
Select United flight, departing Tue, Nov 18 from San Diego to Houston, returning Wed, Nov 19, priced at $317 found 9 hours ago
Flights from San Diego (SAN) to Houston (IAH)
Origin airport
San Diego Intl.
Destination airport
George Bush Intercontinental
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Spirit Airlines, United
Popular airline
Alaska Airlines
Distance
1300 mi
Average flight time
6 hours 58 mins

Frequently asked questions

How much is a United Airlines flight from San Diego Intl. Airport (SAN) to George Bush Intercontinental Airport (IAH)?
Set the "Price (lowest to highest)" filter on Expedia to find cheap United Airlines return flights from $317 from SAN to IAH. Affordable one-way options from $159 are also on offer.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SAN to IAH with United Airlines?
November is one of the most affordable months to jet off to Houston with United Airlines. You could also find fantastic deals on one-way and return tickets in February.
What is the cheapest time to book flights from San Diego Intl. Airport (SAN) to George Bush Intercontinental Airport (IAH) with United Airlines?
Search for affordable United Airlines flights from San Diego Intl. Airport (SAN) to George Bush Intercontinental Airport (IAH) one to three months prior to your departure day. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare class and itinerary, the best day to book a domestic flight is generally Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from San Diego Intl. Airport (SAN) to George Bush Intercontinental Airport (IAH)?
United Airlines has direct flights from San Diego Intl. Airport (SAN) to George Bush Intercontinental Airport (IAH), with 28 weekly departures. Simply select the "Nonstop" and "Airline" filters during your search on Expedia to see all direct United Airlines flights to IAH.
How long does it take to fly from SAN to IAH with United Airlines?
Take off from San Diego Intl. Airport (SAN) for George Bush Intercontinental Airport (IAH) on a direct United Airlines flight, and you'll be in the skies for about 3h 12m.
Which day of the week has the most United Airlines flights from San Diego Intl. Airport (SAN) to George Bush Intercontinental Airport (IAH)?
If flexibility is what you're after, Saturday offers the most choice for United Airlines flights from San Diego Intl. Airport (SAN) to George Bush Intercontinental Airport (IAH). You can pick from 4 different departures.
What is the earliest United Airlines flight from SAN to IAH?
Setting off from SAN at 8:01AM UTC-8, the earliest United Airlines flight to IAH lands at 1:13PM UTC-6. Traveling early means you're less likely to encounter delays.* Prefer a later start? The last United Airlines flight from SAN to IAH departs at 3:37PM UTC-8 and touches down at 8:49PM UTC-6.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in Houston?
United Airlines flights from San Diego Intl. Airport (SAN) to Houston come in to land at George Bush Intercontinental Airport (IAH) and William P. Hobby Airport (HOU). The main Houston hub served by this airline is IAH. It's always worth checking out flights landing at nearby airports on Expedia as you may find cheaper fares.
Why fly with United Airlines from SAN to IAH?
A rewarding loyalty program and the ability to rack up points through United Mileage Plus are the start of the reasons to jet off from SAN to IAH with United Airlines. Plus, by joining Expedia's free One Key™ program, you can receive OneKeyCash™* alongside United Airlines's loyalty program earnings. It's yours to spend on your next adventure.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does United Airlines fly from San Diego Intl. Airport (SAN) to George Bush Intercontinental Airport (IAH)?
You'll likely be seated on a Boeing 737-900 or a Boeing 737 MAX 9 when flying United Airlines from San Diego Intl. Airport (SAN) to George Bush Intercontinental Airport (IAH). However, keep in mind that a different plane may be used due to operational reasons.
Can I change or cancel my United Airlines flight from San Diego Intl. Airport (SAN) to George Bush Intercontinental Airport (IAH)?
Depending on the type of fare you purchased, a fee generally applies if you modify or cancel your flight more than 24 hours after it's confirmed. To secure flexible plane tickets, select our "No cancel fee" or "Changes included" filter when you search for flights. For more information on modifying or canceling your reservation, visit "Trips," select your flight and click on "Manage Booking."

Explore a world of travel with Expedia

*Available to One Key members.