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Cheap flights from Houston to Los Angeles from $56

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 12/8. 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

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Frontier Logo
6:45 am - 2:25 pmIAH-ONT
9h 40m1 stop
Frontier Logo
2:59 pm - 8:21 pmONT-IAH
3h 22mnonstop
$120Frontier
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Sat, Dec 13 - Mon, Dec 15
Frontier Logo
2:52 pm - 9:17 pmIAH-ONT
8h 25m1 stop
Frontier Logo
2:59 pm - 8:21 pmONT-IAH
3h 22mnonstop
$121Frontier
Find Deal
Thu, Dec 11 - Mon, Dec 15
Frontier Logo
4:08 pm - 11:24 pmIAH-ONT
9h 16m1 stop
Frontier Logo
7:15 am - 6:15 pmONT-IAH
9h 00m1 stop
$130Frontier
Find Deal
Sat, Jan 24 - Sat, Feb 7
Frontier Logo
2:51 pm - 4:33 pmIAH-ONT
3h 42mnonstop
Frontier Logo
2:59 pm - 8:21 pmONT-IAH
3h 22mnonstop
$132Frontier
Find Deal
Fri, Dec 12 - Mon, Dec 15
Southwest Logo
5:45 pm - 7:15 pmHOU-ONT
3h 30mnonstop
Southwest Logo
6:40 am - 5:45 pmONT-HOU
9h 05m1 stop
$218Southwest
Find Deal
Mon, Dec 8 - Mon, Dec 15
Southwest Logo
6:20 am - 12:00 pmHOU-ONT
7h 40m1 stop
Southwest Logo
12:45 pm - 9:40 pmONT-HOU
6h 55m1 stop
$265Southwest
Find Deal
Mon, Dec 8 - Mon, Dec 15
Southwest Logo
1:40 pm - 7:15 pmHOU-ONT
7h 35m2 stops
Southwest Logo
12:45 pm - 8:10 pmONT-HOU
5h 25m1 stop
$273Southwest
Find Deal
Mon, Dec 8 - Mon, Dec 15
Delta Logo
2:32 pm - 11:04 pmHOU-ONT
10h 32m1 stop
Delta Logo
10:25 pm - 9:34 amONT-HOU
9h 09m1 stop
$283Delta
Find Deal
Fri, Dec 12 - Mon, Dec 15
Delta Logo
2:32 pm - 11:04 pmHOU-ONT
10h 32m1 stop
Delta Logo
10:30 pm - 10:21 amONT-HOU
9h 51m1 stop
$285Delta
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Tue, Dec 16 - Wed, Jan 7
Delta Logo
2:32 pm - 11:04 pmHOU-ONT
10h 32m1 stop
Delta Logo
10:25 pm - 9:34 amONT-HOU
9h 09m1 stop
$287Delta
Find Deal
Mon, Dec 8 - Mon, Dec 15

Southwest flights from Houston to Ontario

Our best Southwest deals on Houston to Ontario flight tickets
Southwest
Dec 8
HOU5:45 pmHouston Hobby
3h 30m
ONT7:15 pmOntario
Dec 15
ONT6:40 amOntario
9h 05m
1 stop
HOU5:45 pmHouston Hobby
$218
Find similar
Southwest
Dec 8
HOU6:20 amHouston Hobby
7h 40m
1 stop
ONT12:00 pmOntario
Dec 15
ONT12:45 pmOntario
6h 55m
1 stop
HOU9:40 pmHouston Hobby
$265
Find similar
Southwest
Dec 8
HOU1:40 pmHouston Hobby
7h 35m
2 stops
ONT7:15 pmOntario
Dec 15
ONT12:45 pmOntario
5h 25m
1 stop
HOU8:10 pmHouston Hobby
$273
Find similar

American Airlines flights from Houston to Ontario

Our best American Airlines deals on Houston to Ontario flight tickets
American Airlines
Jan 24
HOU6:36 pmHouston Hobby
6h 12m
1 stop
ONT10:48 pmOntario
Feb 7
ONT12:57 pmOntario
7h 49m
2 stops
HOU10:46 pmHouston Hobby
$304
Find similar
American Airlines
Jan 24
HOU10:35 amHouston Hobby
7h 30m
2 stops
ONT4:05 pmOntario
Feb 7
ONT12:57 pmOntario
7h 49m
2 stops
HOU10:46 pmHouston Hobby
$309
Find similar
American Airlines
Dec 6
IAH9:28 amHouston George Bush Intcntl
8h 34m
2 stops
ONT4:02 pmOntario
Dec 7
ONT9:59 amOntario
5h 18m
1 stop
IAH5:17 pmHouston George Bush Intcntl
$360
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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 November 26, 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 12/13

6:45 am-2:25 pm

1 stop9h 40m

Ontario

Mon 12/15

2:59 pm-8:21 pm

Nonstop3h 22m

$120

HoustonOntario

IAH - ONT

IAHONT

Houston George Bush Intcntl

Thu 12/11

2:52 pm-9:17 pm

1 stop8h 25m

Ontario

Mon 12/15

2:59 pm-8:21 pm

Nonstop3h 22m

$121

HoustonOntario

IAH - ONT

IAHONT

Houston George Bush Intcntl

Sat 1/24

4:08 pm-11:24 pm

1 stop9h 16m

Ontario

Sat 2/7

7:15 am-6:15 pm

1 stop9h 00m

$130

HoustonOntario

IAH - ONT

IAHONT

Houston George Bush Intcntl

Fri 12/12

2:51 pm-4:33 pm

Nonstop3h 42m

Ontario

Mon 12/15

2:59 pm-8:21 pm

Nonstop3h 22m

$132

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

Mon 12/8

5:45 pm-7:15 pm

Nonstop3h 30m

Ontario

Mon 12/15

6:40 am-5:45 pm

1 stop9h 05m

$218

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

Mon 12/8

6:20 am-12:00 pm

1 stop7h 40m

Ontario

Mon 12/15

12:45 pm-9:40 pm

1 stop6h 55m

$265

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

Mon 12/8

1:40 pm-7:15 pm

2 stops7h 35m

Ontario

Mon 12/15

12:45 pm-8:10 pm

1 stop5h 25m

$273

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

Fri 12/12

2:32 pm-11:04 pm

1 stop10h 32m

Ontario

Mon 12/15

10:25 pm-9:34 am

1 stop9h 09m

$283

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

Tue 12/16

2:32 pm-11:04 pm

1 stop10h 32m

Ontario

Wed 1/7

10:30 pm-10:21 am

1 stop9h 51m

$285

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

Mon 12/8

2:32 pm-11:04 pm

1 stop10h 32m

Ontario

Mon 12/15

10:25 pm-9:34 am

1 stop9h 09m

$287

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 $177. 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 $251 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 $220 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 21m

Direct flights

Every day

Airports in Ontario

1 airport
The fastest flight from Houston to Ontario takes 3h 21m
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 30m, 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
FrontierPriceFrom $64Free CancellationRating
5.8
3,099 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $83Free CancellationRating
6.3
8,158 reviews
Search Spirit Airlines flights
United AirlinesPriceFrom $168Free CancellationRating
7.4
9,046 reviews
Search United Airlines flights
American AirlinesPriceFrom $186Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
SouthwestPriceFrom $224Free CancellationRating
8.0
4,254 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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