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Cheap Flights from Houston to San Diego

Your route at a glance

Cheapest deal$221
Cheapest monthFebruary
Average flight duration3 hours and 31 minutes
Most popular airlineUnited

Compare Houston to San Diego flight deals

Find the cheapest month or even day of the year to fly to San Diego

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Flight deals from Houston to San Diego

Looking for a cheap last-minute deal or the best return flight from Houston to San Diego? Find the lowest prices on one-way and return tickets right here.
San Diego.$221 per passenger.Departing Thu, 19 Feb, returning Sun, 22 Feb.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Thu, 19 Feb, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Sun, 22 Feb, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $221, select.
San Diego.$221 per passenger.Departing Fri, 23 Jan, returning Sun, 25 Jan.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Fri, 23 Jan, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Sun, 25 Jan, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $221, select.
San Diego.$221 per passenger.Departing Tue, 24 Feb, returning Mon, 2 Mar.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Tue, 24 Feb, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Mon, 2 Mar, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $221, select.
San Diego.$221 per passenger.Departing Tue, 27 Jan, returning Sun, 1 Feb.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Tue, 27 Jan, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Sun, 1 Feb, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $221, select.
San Diego.$260 per passenger.Departing Wed, 31 Dec, returning Wed, 7 Jan.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Wed, 31 Dec, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Wed, 7 Jan, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $260, select.
San Diego.$267 per passenger.Departing Sun, 1 Mar, returning Sat, 7 Mar.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Sun, 1 Mar, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Sat, 7 Mar, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $267, select.
San Diego.$375 per passenger.Departing Thu, 9 Apr, returning Sun, 12 Apr.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Thu, 9 Apr, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Sun, 12 Apr, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $375, select.
San Diego.$402 per passenger.Departing Wed, 10 Dec, returning Wed, 17 Dec.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Wed, 10 Dec, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Wed, 17 Dec, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $402, select.

Find the cheapest month to fly from Houston to San Diego

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Houston to San Diego flights are currently cheapest in January.
Dec
from $402
Jan
from $221
Feb
from $221
Mar
from $267
Apr
from $375
May
from $706
Jun
from $706
Jul
from $769
Aug
from $737
Sep
Find prices
Oct
Find prices
Nov
Find prices

Direct flights from Houston to San Diego

Alternative Houston to San Diego routes

Looking for the cheapest, fastest or easiest route from Houston to San Diego? You could fly into the following airports instead.

Finding cheap flights from Houston to San Diego: Frequently asked questions

There are 2 airports in San Diego: San Diego International and McClellan-Palomar.
The best price we found for a return flight from Houston to San Diego is $221. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
3 hours and 31 minutes is the average flight time from Houston to San Diego.
Southwest Airlines, United and Emirates fly direct from Houston to San Diego.
As of December 2025, there are 248 flights per week flying from Houston to San Diego.
The cheapest month to fly from Houston to San Diego is usually February.
If you're flying from Houston, the cheapest airport near San Diego is San Diego International – which is 4.1 km away from the centre of San Diego. We've found flights into this airport from $221.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Houston to San Diego on Thursday, 19 February 2026.
Yes – the average flight time is 3 hours and 31 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Diego but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Diego is around 40 days in advance, so don’t leave your flight to the last minute.
In December, the average temperature is usually around 13°C. August is typically the warmest month in San Diego, when it usually averages around 28°C. You can expect the least rain in June. The coldest month is December, with temperatures averaging 10°C. The rainiest month is February.
The cheapest airline that flies to San Diego is Frontier Airlines. And the cheapest airline that flies to McClellan-Palomar Airport is Southwest Airlines.

Travelling from Houston to San Diego: what you need to know

  • Begin your trip planning by checking out the ideal departure point for your flight from Houston to San Diego. Explore the options for taking off from George Bush Intercontinental Airport (IAH) or William P. Hobby Airport (HOU), two of the city's main airports.

  • San Diego International Airport (SAN) and McClellan-Palomar Airport (CLD) are the chief entry points to San Diego.

  • Around 3 hours 20 minutes is how long you can expect to be in the air on a direct Houston to San Diego flight.

  • San Diego's timezone is UTC-7, which makes San Diego two hours behind Houston.

  • The most popular route for flights from Houston to San Diego is from George Bush Intercontinental Airport (IAH) to San Diego International Airport (SAN). You can select from 34 services every week between these two airports. If you'd like to set off at the first opportunity, the earliest flight from IAH to SAN is the 07:25 United Airlines option. If you prefer travelling later, the final departure is at 20:17 with United Airlines.

  • Leave enough time to get on your Houston to San Diego flight. As a rule of thumb, arrive at least two hours before international departures and an hour ahead for domestic flights.

  • During popular months like July, it's a good idea to get to the airport even earlier. Plan to arrive two hours before a domestic departure and four hours ahead of international flights when you travel during peak periods in general.

How to find the cheapest flights from Houston to San Diego

  • Right now, $91 is the lowest price we've found for a one-way ticket from Houston to San Diego. The cheapest price for a return flight is $221. Remember fares may change due to demand at the time of booking.

  • To snag cheap Houston to San Diego flights, book your trip two months before your departure date.

  • May is the best month for scoring an awesome deal on a plane ticket from Houston to San Diego. If you're looking to travel at a different time of year, the 'Whole month' tool will show you the lowest prices across every month.

  • There's no need to search every day to find out if fares have dropped when you create a Price Alert. We'll notify you when there's a better deal on cheap flights from Houston to San Diego.

  • Tailor your trip using filters. Select your preferred departure and arrival times, airlines and total journey duration. You can also sort the results by 'Fastest,' 'Best' or 'Cheapest' Houston to San Diego flights.

Flying from Houston

George Bush Intercontinental Airport (IAH)

  • If you're after a direct flight from Houston to San Diego, you can depart from George Bush Intercontinental Airport (IAH). Fly from IAH to San Diego International Airport (SAN) without any stops.

  • United Airlines is a well-known carrier that offers direct Houston to San Diego plane tickets leaving from IAH.

  • IAH is about 21 kilometres from central Houston. If you're driving, ride-sharing or catching a cab from the centre, it'll take you 20 minutes or so to get there, depending on the traffic. If you're using public transport, expect the journey time to be around 50 minutes.

  • Want a hassle-free start to your holiday? Stay near George Bush Intercontinental Airport. Whether you're catching an early flight from Houston to San Diego or just don't want to be rushed, these hotels are the answer:

  • 78.42% of flights that depart George Bush Intercontinental Airport make it to their destination on time.

  • You'll find IAH at 16930 JFK Boulevard.

William P. Hobby Airport (HOU)

  • Prefer to jet off from William P. Hobby Airport (HOU)? This popular hub offers direct flights from Houston to San Diego, seamlessly connecting to San Diego International Airport (SAN).

  • You can book a direct Houston to San Diego plane ticket with Southwest Airlines. This is one of the main airlines operating this route out of HOU.

  • On public transport, you can travel from central Houston to HOU in around 1 hour 40 minutes. The airport is roughly 16 kilometres away. Driving will take you about 20 minutes.

  • Want to treat yourself to an extra night away before your flight from Houston to San Diego? Unwind in a hotel near William P. Hobby Airport before your adventure officially starts. Here's where you can stay:

  • The majority of flights that leave William P. Hobby Airport reach their destination right on cue. It boasts a strong on-time performance rate of 81%.

  • The street address for HOU is 7800 Airport Boulevard.

Arriving in San Diego

San Diego International Airport (SAN)

  • San Diego International Airport (SAN) is approximately 5 kilometres from central San Diego. If you're catching a cab or a ride-share, the drive will take around 10 minutes.

  • Getting to the centre on public transport typically takes 20 minutes.

  • If you're arriving on a late flight from Houston to San Diego, nothing beats the convenience of staying close to the terminal. Grab your suitcases from the carousel and then be showered and resting soon after at one of these hotels near SAN:

  • Get your adventure underway by picking up a San Diego International Airport rental car. Grab a set of wheels from Thrifty, Dollar or Budget and experience the lesser-explored corners of San Diego and beyond.

  • Reserving your ride from San Diego International Airport around two weeks in advance can help you get the lowest rate.

  • SAN is situated at N Harbour Dr.

McClellan-Palomar Airport (CLD)

  • McClellan-Palomar Airport (CLD) is around 48 kilometres from the centre of San Diego. Once you've disembarked your flight from Houston to San Diego, it takes approximately 40 minutes to reach the heart of the city in a cab or ride-share.

  • If you hop on public transport, you'll reach the centre in 2 hours 15 minutes or so.

  • Budget, Hertz and Avis make picking up a McClellan-Palomar Airport rental car quick and easy. These trusted companies are located around or in the terminal and will have you behind the wheel before you know it.

  • Avoid the slow-moving lines and paperwork at the rental desk by completing your booking beforehand. Secure your ride from CLD a few weeks in advance so you can simply collect the keys and drive away.

Best time to go to San Diego

  • It's time to figure out your travel dates for your flight from Houston to San Diego. July is the busiest month to travel to San Diego. If you like a quieter vibe, go in May.

  • When booking your Houston to San Diego tickets, consider what kind of weather works for you. August is the warmest month in San Diego, with temperatures ranging from 17ºC to 28ºC.

  • February has average temperatures of between 7ºC and 23ºC. Look for cheap flights from Houston to San Diego around that time if you want to travel when it's cooler.

More about San Diego

Explore more of United States

  • San Diego is easy to fall in love with, but there are so many other corners of United States just waiting to be explored. About 177 kilometres north-west of San Diego, a trip to Los Angeles will fill your itinerary to the brim. Don't miss top attractions like Griffith Observatory, The Broad and La Brea Tar Pits & Museum.

  • Phoenix is another well-known destination in United States and is around 483 kilometres east of San Diego. No trip is complete without visiting Desert Botanical Garden, Heard Museum and Papago Park.

More travel options

Plan the rest of your trip from Houston to San Diego

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.