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Cheap flights from Houston to Los Angeles from $38

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Houston to Los Angeles departing on 9/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Frontier Logo
5:07 pm - 6:35 pmIAH-ONT
3h 28mnonstop
Frontier Logo
12:28 pm - 5:47 pmONT-IAH
3h 19mnonstop
$141Frontier
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Thu, Sep 25 - Sun, Sep 28
Frontier Logo
5:07 pm - 6:35 pmIAH-ONT
3h 28mnonstop
Frontier Logo
8:59 pm - 11:09 amONT-IAH
12h 10m1 stop
$142Frontier
Find Deal
Sun, Sep 14 - Thu, Sep 18
Logo
5:07 pm - 6:35 pmIAH-ONT
3h 28mnonstop
Logo
2:45 pm - 5:50 amONT-IAH
13h 05m1 stop
$166
Find Deal
Fri, Sep 19 - Mon, Sep 22
Logo
5:07 pm - 6:35 pmIAH-ONT
3h 28mnonstop
Logo
7:15 pm - 7:19 pmONT-IAH
22h 04m2 stops
$187
Find Deal
Thu, Sep 18 - Sun, Sep 21
Southwest Logo
7:50 am - 9:05 amHOU-ONT
3h 15mnonstop
Southwest Logo
6:20 am - 11:30 amONT-HOU
3h 10mnonstop
$191Southwest
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Thu, Sep 18 - Thu, Sep 25
Southwest Logo
7:25 pm - 10:45 pmHOU-ONT
5h 20m1 stop
Southwest Logo
6:20 am - 11:30 amONT-HOU
3h 10mnonstop
$201Southwest
Find Deal
Thu, Sep 18 - Thu, Sep 25
American Airlines Logo
8:32 pm - 11:59 pmHOU-ONT
5h 27m1 stop
American Airlines Logo
11:59 pm - 8:28 amONT-HOU
6h 29m1 stop
$211American Airlines
Find Deal
Thu, Oct 2 - Sun, Oct 5
American Airlines Logo
8:32 pm - 11:59 pmHOU-ONT
5h 27m1 stop
American Airlines Logo
10:53 am - 8:11 pmONT-HOU
7h 18m1 stop
$231American Airlines
Find Deal
Thu, Sep 11 - Sat, Sep 13
Delta Logo
1:05 pm - 7:11 pmHOU-ONT
8h 06m1 stop
Delta Logo
11:45 am - 10:31 pmONT-HOU
8h 46m1 stop
$325Delta
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Wed, Sep 3 - Fri, Sep 5
Delta Logo
6:00 am - 4:08 pmHOU-ONT
12h 08m2 stops
Delta Logo
11:45 am - 10:31 pmONT-HOU
8h 46m1 stop
$326Delta
Find Deal
Tue, Sep 2 - Fri, Sep 5

Frontier flights from Houston to Ontario

Our best Frontier deals on Houston to Ontario flight tickets
Frontier
Sep 25
IAH5:07 pmHouston George Bush Intcntl
3h 28m
ONT6:35 pmOntario
Sep 28
ONT12:28 pmOntario
3h 19m
IAH5:47 pmHouston George Bush Intcntl
$141
Find similar
Frontier
Sep 14
IAH5:07 pmHouston George Bush Intcntl
3h 28m
ONT6:35 pmOntario
Sep 18
ONT8:59 pmOntario
12h 10m
1 stop
IAH11:09 amHouston George Bush Intcntl
$142
Find similar
Frontier
Sep 14
IAH6:15 amHouston George Bush Intcntl
27h 38m
1 stop
ONT7:53 amOntario
Sep 20
ONT8:59 pmOntario
12h 10m
1 stop
IAH11:09 amHouston George Bush Intcntl
$143
Find similar

Southwest flights from Houston to Ontario

Our best Southwest deals on Houston to Ontario flight tickets
Southwest
Sep 18
HOU7:50 amHouston Hobby
3h 15m
ONT9:05 amOntario
Sep 25
ONT6:20 amOntario
3h 10m
HOU11:30 amHouston Hobby
$191
Find similar
Southwest
Sep 18
HOU7:25 pmHouston Hobby
5h 20m
1 stop
ONT10:45 pmOntario
Sep 25
ONT6:20 amOntario
3h 10m
HOU11:30 amHouston Hobby
$201
Find similar
Southwest
Sep 11
HOU7:50 amHouston Hobby
3h 15m
ONT9:05 amOntario
Sep 15
ONT6:20 amOntario
3h 10m
HOU11:30 amHouston Hobby
$234
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Houston to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 21, 2025.
Use the filters below to find and compare flights from Houston to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HoustonOntario

IAH - ONT

IAHONT

Houston George Bush Intcntl

Thu 9/25

5:07 pm-6:35 pm

Nonstop3h 28m

Ontario

Sun 9/28

12:28 pm-5:47 pm

Nonstop3h 19m

$141

HoustonOntario

IAH - ONT

IAHONT

Houston George Bush Intcntl

Sun 9/14

5:07 pm-6:35 pm

Nonstop3h 28m

Ontario

Thu 9/18

8:59 pm-11:09 am

1 stop12h 10m

$142

HoustonOntario

IAH - ONT

IAHONT

Houston George Bush Intcntl

Fri 9/19

5:07 pm-6:35 pm

Nonstop3h 28m

Ontario

Mon 9/22

2:45 pm-5:50 am

1 stop13h 05m

$166

HoustonOntario

IAH - ONT

IAHONT

Houston George Bush Intcntl

Thu 9/18

5:07 pm-6:35 pm

Nonstop3h 28m

Ontario

Sun 9/21

7:15 pm-7:19 pm

2 stops22h 04m

$187

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

Thu 9/18

7:50 am-9:05 am

Nonstop3h 15m

Ontario

Thu 9/25

6:20 am-11:30 am

Nonstop3h 10m

$191

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

Thu 9/18

7:25 pm-10:45 pm

1 stop5h 20m

Ontario

Thu 9/25

6:20 am-11:30 am

Nonstop3h 10m

$201

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

Thu 10/2

8:32 pm-11:59 pm

1 stop5h 27m

Ontario

Sun 10/5

11:59 pm-8:28 am

1 stop6h 29m

$211

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

Thu 9/11

8:32 pm-11:59 pm

1 stop5h 27m

Ontario

Sat 9/13

10:53 am-8:11 pm

1 stop7h 18m

$231

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

Wed 9/3

1:05 pm-7:11 pm

1 stop8h 06m

Ontario

Fri 9/5

11:45 am-10:31 pm

1 stop8h 46m

$325

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

Tue 9/2

6:00 am-4:08 pm

2 stops12h 08m

Ontario

Fri 9/5

11:45 am-10:31 pm

1 stop8h 46m

$326

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Houston to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Ontario?

In general, February is the cheapest month to fly from Houston to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $141. If you aren’t able to travel during the month of February, then book flights to Ontario from Houston during September instead. Flights to Ontario in September, while not as cheap as those in February, still average around $154.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Wednesday when prices can be found for as low as $363. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Houston to Ontario for around $502.

What is the cheapest time of day to depart on your flight to Ontario?

In the morning is the cheapest time of day to fly from Houston to Ontario when you can find flight prices for as low as $171. Flying to Ontario in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $232 on average. Flights to Ontario from Houston in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Houston to Ontario flight route?

Fly from Houston George Bush Intcntl to Ontario for the best Houston - Ontario flight prices

How far in advance should I book a flight to Ontario?

You are more likely to see cheaper flights to Ontario from Houston when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $216 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Houston for as low as $186 on momondo.

What cabin class options are available on Houston to Ontario flights?

There are 4 cabin classes available to choose from on Houston to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Houston to Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Houston to Ontario

Fastest flight time

3h 15m

Direct flights

Every day

Airports in Ontario

1 airport
The fastest flight from Houston to Ontario takes 3h 15m
Direct flights go from Houston to Ontario every day.
There is 1 airport near Ontario: Ontario (ONT)
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  • How far is Houston to Ontario by plane?

    Houston and Ontario are 1336.6 mi apart from one another. Flights usually cover this in 3h 15m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Houston to Ontario Airport?

    Prices for flights from Houston to Ontario Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Houston to Ontario Airport?

  • How old do you have to be to fly from Houston to Ontario Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Houston to Ontario Airport.

  • What documentation or ID do you need to fly to Ontario Airport?

    The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Houston to Ontario

Compare and see reviews for airlines that fly from Houston to Ontario with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $83Free CancellationRating
6.3
8,035 reviews
Search Spirit Airlines flights
FrontierPriceFrom $84Free CancellationRating
5.8
3,207 reviews
Search Frontier flights
United AirlinesPriceFrom $148Free CancellationRating
7.4
8,930 reviews
Search United Airlines flights
American AirlinesPriceFrom $196Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $224Free CancellationRating
8.0
4,245 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Houston to Ontario?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Houston.

Can I find flights from Houston to Ontario with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Houston to Ontario flights to just show those with flexible booking policies.

How can momondo help me find flights from Houston to Ontario?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from Houston.

I’m not ready to book a flight from Houston to Ontario right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Ontario, momondo offers a useful price alert feature which will track prices for flights to Ontario from Houston and alert you when they change.

An easier way to manage your Ontario trip

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