United's Economy Plus offers extra legroom, ideal for comfort on medium-haul flights.
United's MileagePlus program allows pooling miles, useful for family travel.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $181 (Kiwi.com) |
One-way from | $81 (Trip.com) |
Popular in | March |
Cheapest in | January |
Average price | $420 |
Good round-trip deal | $417 or less |
Good one-way deal | $195 or less |
Fly from
Fly to
Route
Depart
Return
Price
HoustonSan Diego
IAH - SAN
IAHSAN
Houston George Bush Intcntl
Thu 12/11
10:28 pm-2:10 pm
1 stop17h 42m
San Diego
Mon 12/15
3:05 pm-7:12 pm
2 stops26h 07m
HoustonSan Diego
IAH - SAN
IAHSAN
Houston George Bush Intcntl
Mon 11/17
8:48 pm-12:07 pm
1 stop17h 19m
San Diego
Wed 11/19
1:37 pm-10:53 am
1 stop19h 16m
HoustonSan Diego
IAH - SAN
IAHSAN
Houston George Bush Intcntl
Thu 11/13
8:06 pm-12:35 pm
1 stop18h 29m
San Diego
Sun 11/16
6:41 am-10:37 am
1 stop25h 56m
HoustonSan Diego
IAH - SAN
IAHSAN
Houston George Bush Intcntl
Sun 12/7
6:08 am-12:47 pm
1 stop8h 39m
San Diego
Mon 12/8
8:59 pm-6:20 pm
1 stop19h 21m
HoustonSan Diego
IAH - SAN
IAHSAN
Houston George Bush Intcntl
Wed 12/3
8:30 am-1:04 pm
1 stop6h 34m
San Diego
Wed 12/10
10:23 am-3:35 pm
Nonstop3h 12m
HoustonSan Diego
IAH - SAN
IAHSAN
Houston George Bush Intcntl
Sun 12/7
6:25 pm-7:56 pm
Nonstop3h 31m
San Diego
Wed 12/10
12:08 pm-5:20 pm
Nonstop3h 12m
HoustonSan Diego
IAH - SAN
IAHSAN
Houston George Bush Intcntl
Tue 1/6
8:15 pm-9:56 pm
Nonstop3h 41m
San Diego
Fri 1/16
1:51 pm-7:10 pm
Nonstop3h 19m
HoustonSan Diego
IAH - SAN
IAHSAN
Houston George Bush Intcntl
Mon 1/12
12:40 pm-5:28 pm
1 stop6h 48m
San Diego
Wed 1/14
10:26 am-3:40 pm
Nonstop3h 14m
HoustonSan Diego
IAH - SAN
IAHSAN
Houston George Bush Intcntl
Thu 12/18
8:15 pm-9:56 pm
Nonstop3h 41m
San Diego
Wed 12/24
6:15 am-3:04 pm
1 stop6h 49m
HoustonSan Diego
IAH - SAN
IAHSAN
Houston George Bush Intcntl
Fri 1/23
4:55 pm-6:36 pm
Nonstop3h 41m
San Diego
Mon 1/26
1:51 pm-7:10 pm
Nonstop3h 19m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*2 stars |
The price you pay for your flight from Houston George Bush Intcntl Airport to San Diego may vary depending on when you book. For the best chance of a lower fare, look to book 90 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, November is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to San Diego (average of $54). Flying from Houston George Bush Intcntl Airport to San Diego in August is currently the most expensive (average of $123). 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.
When flying from Houston George Bush Intcntl Airport to San Diego, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 4% versus a flight in the evening.
Travelers seeking maximum savings on their Houston George Bush Intcntl Airport to San Diego flight should consider departing on Friday at noon when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
About 18% of weekly flights between Houston and San Diego have experienced delays in the past year, with the average delay time being 150 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Over the last year, United Airlines have had the lowest number of delays on this route, with just 17% of flights being delayed.
Las Vegas (LAS) – chosen by Cheapflights users on 67% of 1-stop itineraries from Houston George Bush Intcntl Airport to San Diego on Cheapflights.
Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 5h 52m.
Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 5h 52m.
Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 3h 02m.
Food
Comfort
Crew
Entertainment
Overall
Boarding
Reviews
Sebrena,Oct 2025
IAH - RSW
Food
Comfort
Crew
Entertainment
Overall
Boarding
Reviews
Sebrena,Oct 2025
IAH - RSW
Food
Comfort
Crew
Entertainment
Overall
Boarding
Reviews
Sebrena,Oct 2025
IAH - RSW
Food
Comfort
Crew
Entertainment
Overall
Boarding
Reviews
Sebrena,Oct 2025
IAH - RSW
Food
Comfort
Crew
Entertainment
Overall
Boarding
Reviews
Sebrena,Oct 2025
IAH - RSW
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$113 | Average$192 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$120 | Average$199 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$216 | Average$485 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$320 | Average$484 | FlexibilityNo cancel fee | On-time69% |