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Cheap flights from Houston to Los Angeles from $51

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 12/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

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Frontier Logo
7:00 am - 11:10 amIAH-ONT
6h 10m1 stop
Frontier Logo
12:05 pm - 11:29 pmONT-IAH
9h 24m1 stop
$108Frontier
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Sat, Nov 8 - Sat, Nov 15
Frontier Logo
4:29 pm - 5:54 pmIAH-ONT
3h 25mnonstop
Frontier Logo
1:46 pm - 7:11 pmONT-IAH
3h 25mnonstop
$109Frontier
Find Deal
Thu, Oct 23 - Thu, Oct 30
Multiple Airlines Logo
6:31 pm - 9:10 amIAH-ONT
16h 39m1 stop
Multiple Airlines Logo
1:46 pm - 7:11 pmONT-IAH
3h 25mnonstop
$122Multiple Airlines
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Wed, Nov 12 - Mon, Nov 17
Multiple Airlines Logo
5:23 pm - 6:49 pmIAH-ONT
3h 26mnonstop
Multiple Airlines Logo
10:43 pm - 1:54 pmONT-IAH
13h 11m1 stop
$133Multiple Airlines
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Thu, Nov 13 - Mon, Nov 17
Southwest Logo
2:05 pm - 3:35 pmHOU-ONT
3h 30mnonstop
Southwest Logo
4:40 pm - 11:00 pmONT-HOU
4h 20m1 stop
$149Southwest
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Fri, Nov 7 - Sun, Nov 9
Southwest Logo
7:50 am - 12:00 pmHOU-ONT
6h 10m1 stop
Southwest Logo
4:40 pm - 11:00 pmONT-HOU
4h 20m1 stop
$158Southwest
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Thu, Nov 6 - Sun, Nov 9
American Airlines Logo
8:11 pm - 11:59 pmHOU-ONT
5h 48m1 stop
American Airlines Logo
2:51 pm - 10:02 pmONT-HOU
5h 11m1 stop
$225American Airlines
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Thu, Oct 23 - Thu, Oct 30
Delta Logo
10:13 am - 9:20 pmHOU-ONT
13h 07m2 stops
Delta Logo
11:36 am - 11:00 pmONT-HOU
9h 24m1 stop
$255Delta
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Sat, Oct 25 - Fri, Oct 31
American Airlines Logo
2:24 pm - 6:52 pmHOU-ONT
6h 28m1 stop
American Airlines Logo
10:47 am - 5:54 pmONT-HOU
5h 07m1 stop
$259American Airlines
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Sat, Nov 1 - Tue, Nov 4
Delta Logo
2:22 pm - 10:22 pmHOU-ONT
10h 00m1 stop
Delta Logo
10:00 pm - 9:18 amONT-HOU
9h 18m1 stop
$263Delta
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Fri, Oct 24 - Mon, Oct 27

Frontier flights from Houston to Ontario

Our best Frontier deals on Houston to Ontario flight tickets
Frontier
Nov 8
IAH7:00 amHouston George Bush Intcntl
6h 10m
1 stop
ONT11:10 amOntario
Nov 15
ONT12:05 pmOntario
9h 24m
1 stop
IAH11:29 pmHouston George Bush Intcntl
$108
Find similar
Frontier
Oct 23
IAH4:29 pmHouston George Bush Intcntl
3h 25m
ONT5:54 pmOntario
Oct 30
ONT1:46 pmOntario
3h 25m
IAH7:11 pmHouston George Bush Intcntl
$109
Find similar
Frontier
Oct 23
IAH4:29 pmHouston George Bush Intcntl
3h 25m
ONT5:54 pmOntario
Oct 30
ONT7:44 pmOntario
18h 44m
1 stop
IAH4:28 pmHouston George Bush Intcntl
$113
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Southwest flights from Houston to Ontario

Our best Southwest deals on Houston to Ontario flight tickets
Southwest
Nov 7
HOU2:05 pmHouston Hobby
3h 30m
ONT3:35 pmOntario
Nov 9
ONT4:40 pmOntario
4h 20m
1 stop
HOU11:00 pmHouston Hobby
$149
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Southwest
Nov 6
HOU7:50 amHouston Hobby
6h 10m
1 stop
ONT12:00 pmOntario
Nov 9
ONT4:40 pmOntario
4h 20m
1 stop
HOU11:00 pmHouston Hobby
$158
Find similar
Southwest
Nov 7
HOU2:05 pmHouston Hobby
3h 30m
ONT3:35 pmOntario
Nov 9
ONT4:40 pmOntario
4h 20m
1 stop
HOU11:00 pmHouston Hobby
$201
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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 October 9, 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

Sat 11/8

7:00 am-11:10 am

1 stop6h 10m

Ontario

Sat 11/15

12:05 pm-11:29 pm

1 stop9h 24m

$108

HoustonOntario

IAH - ONT

IAHONT

Houston George Bush Intcntl

Thu 10/23

4:29 pm-5:54 pm

Nonstop3h 25m

Ontario

Thu 10/30

1:46 pm-7:11 pm

Nonstop3h 25m

$109

HoustonOntario

IAH - ONT

IAHONT

Houston George Bush Intcntl

Wed 11/12

6:31 pm-9:10 am

1 stop16h 39m

Ontario

Mon 11/17

1:46 pm-7:11 pm

Nonstop3h 25m

$122

HoustonOntario

IAH - ONT

IAHONT

Houston George Bush Intcntl

Thu 11/13

5:23 pm-6:49 pm

Nonstop3h 26m

Ontario

Mon 11/17

10:43 pm-1:54 pm

1 stop13h 11m

$133

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

Fri 11/7

2:05 pm-3:35 pm

Nonstop3h 30m

Ontario

Sun 11/9

4:40 pm-11:00 pm

1 stop4h 20m

$149

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

Thu 11/6

7:50 am-12:00 pm

1 stop6h 10m

Ontario

Sun 11/9

4:40 pm-11:00 pm

1 stop4h 20m

$158

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

Thu 10/23

8:11 pm-11:59 pm

1 stop5h 48m

Ontario

Thu 10/30

2:51 pm-10:02 pm

1 stop5h 11m

$225

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

Sat 10/25

10:13 am-9:20 pm

2 stops13h 07m

Ontario

Fri 10/31

11:36 am-11:00 pm

1 stop9h 24m

$255

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

Sat 11/1

2:24 pm-6:52 pm

1 stop6h 28m

Ontario

Tue 11/4

10:47 am-5:54 pm

1 stop5h 07m

$259

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

Fri 10/24

2:22 pm-10:22 pm

1 stop10h 00m

Ontario

Mon 10/27

10:00 pm-9:18 am

1 stop9h 18m

$263

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 April instead. Flights to Ontario in April, while not as cheap as those in February, still average around $170.

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 Tuesday when prices can be found for as low as $353. 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 $183. 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 at noon when prices are $247 on average. Flights to Ontario from Houston at noon 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 $217 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 $82 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
8,088 reviews
Search Spirit Airlines flights
FrontierPriceFrom $86Free CancellationRating
5.8
3,143 reviews
Search Frontier flights
United AirlinesPriceFrom $168Free CancellationRating
7.4
8,968 reviews
Search United Airlines flights
American AirlinesPriceFrom $196Free CancellationRating
7.2
11,043 reviews
Search American Airlines flights
SouthwestPriceFrom $224Free CancellationRating
8.0
4,237 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.

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