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Cheap flights from Ontario to Houston 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 Ontario to Houston departing on 10/23. 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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Find the cheapest flights from Ontario to Houston

Cheap round-trip flights

Frontier Logo
1:46 pm - 7:11 pmONT-IAH
3h 25mnonstop
Frontier Logo
5:23 pm - 6:49 pmIAH-ONT
3h 26mnonstop
$102Frontier
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Fri, Oct 31 - Sun, Nov 2
Frontier Logo
1:46 pm - 7:11 pmONT-IAH
3h 25mnonstop
Frontier Logo
5:23 pm - 6:49 pmIAH-ONT
3h 26mnonstop
$118Frontier
Find Deal
Fri, Oct 31 - Sun, Nov 2
Frontier Logo
12:32 pm - 5:48 pmONT-IAH
3h 16mnonstop
Frontier Logo
4:29 pm - 5:54 pmIAH-ONT
3h 25mnonstop
$119Frontier
Find Deal
Thu, Oct 16 - Thu, Oct 23
Multiple Airlines Logo
1:46 pm - 7:11 pmONT-IAH
3h 25mnonstop
Multiple Airlines Logo
2:06 pm - 8:42 pmIAH-ONT
8h 36m1 stop
$169Multiple Airlines
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Fri, Nov 7 - Tue, Nov 11
Southwest Logo
5:25 am - 10:25 amONT-HOU
3h 00mnonstop
Southwest Logo
5:45 pm - 7:15 pmHOU-ONT
3h 30mnonstop
$211Southwest
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Thu, Dec 4 - Mon, Dec 8
Southwest Logo
5:55 pm - 12:35 amONT-HOU
4h 40m1 stop
Southwest Logo
2:30 pm - 3:50 pmHOU-ONT
3h 20mnonstop
$221Southwest
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Fri, Oct 17 - Sun, Oct 19
American Airlines Logo
7:03 am - 3:54 pmONT-HOU
6h 51m1 stop
American Airlines Logo
6:36 pm - 10:28 pmHOU-ONT
5h 52m1 stop
$231American Airlines
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Thu, Dec 4 - Tue, Dec 9
Delta Logo
10:00 pm - 9:18 amONT-HOU
9h 18m1 stop
Delta Logo
2:22 pm - 10:22 pmHOU-ONT
10h 00m1 stop
$237Delta
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Fri, Oct 17 - Tue, Oct 21
Delta Logo
11:36 am - 11:00 pmONT-HOU
9h 24m1 stop
Delta Logo
6:00 am - 4:09 pmHOU-ONT
12h 09m2 stops
$242Delta
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Sat, Nov 8 - Sat, Nov 15
American Airlines Logo
2:51 pm - 10:14 pmONT-HOU
5h 23m1 stop
American Airlines Logo
6:11 pm - 11:59 pmHOU-ONT
7h 48m1 stop
$271American Airlines
Find Deal
Sat, Oct 25 - Mon, Oct 27

American Airlines flights from Ontario to Houston

Our best American Airlines deals on Ontario to Houston flight tickets
American Airlines
Dec 4
ONT7:03 amOntario
6h 51m
1 stop
HOU3:54 pmHouston Hobby
Dec 9
HOU6:36 pmHouston Hobby
5h 52m
1 stop
ONT10:28 pmOntario
$231
Find similar
American Airlines
Oct 25
ONT2:51 pmOntario
5h 23m
1 stop
HOU10:14 pmHouston Hobby
Oct 27
HOU6:11 pmHouston Hobby
7h 48m
1 stop
ONT11:59 pmOntario
$271
Find similar
American Airlines
Oct 17
ONT11:59 pmOntario
6h 29m
1 stop
HOU8:28 amHouston Hobby
Oct 19
HOU8:11 pmHouston Hobby
5h 48m
1 stop
ONT11:59 pmOntario
$281
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Southwest flights from Ontario to Houston

Our best Southwest deals on Ontario to Houston flight tickets
Southwest
Dec 4
ONT5:25 amOntario
3h 00m
HOU10:25 amHouston Hobby
Dec 8
HOU5:45 pmHouston Hobby
3h 30m
ONT7:15 pmOntario
$211
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Southwest
Oct 17
ONT5:55 pmOntario
4h 40m
1 stop
HOU12:35 amHouston Hobby
Oct 19
HOU2:30 pmHouston Hobby
3h 20m
ONT3:50 pmOntario
$221
Find similar
Southwest
Dec 4
ONT11:15 amOntario
6h 30m
2 stops
HOU7:45 pmHouston Hobby
Dec 8
HOU5:45 pmHouston Hobby
3h 30m
ONT7:15 pmOntario
$226
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momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Houston 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 September 17, 2025.
Use the filters below to find and compare flights from Ontario to Houston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Fri 10/31

1:46 pm-7:11 pm

Nonstop3h 25m

Houston George Bush Intcntl

Sun 11/2

5:23 pm-6:49 pm

Nonstop3h 26m

$102

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Fri 10/31

1:46 pm-7:11 pm

Nonstop3h 25m

Houston George Bush Intcntl

Sun 11/2

5:23 pm-6:49 pm

Nonstop3h 26m

$118

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Thu 10/16

12:32 pm-5:48 pm

Nonstop3h 16m

Houston George Bush Intcntl

Thu 10/23

4:29 pm-5:54 pm

Nonstop3h 25m

$119

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Fri 11/7

1:46 pm-7:11 pm

Nonstop3h 25m

Houston George Bush Intcntl

Tue 11/11

2:06 pm-8:42 pm

1 stop8h 36m

$169

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Thu 12/4

5:25 am-10:25 am

Nonstop3h 00m

Houston Hobby

Mon 12/8

5:45 pm-7:15 pm

Nonstop3h 30m

$211

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Fri 10/17

5:55 pm-12:35 am

1 stop4h 40m

Houston Hobby

Sun 10/19

2:30 pm-3:50 pm

Nonstop3h 20m

$221

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Thu 12/4

7:03 am-3:54 pm

1 stop6h 51m

Houston Hobby

Tue 12/9

6:36 pm-10:28 pm

1 stop5h 52m

$231

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Fri 10/17

10:00 pm-9:18 am

1 stop9h 18m

Houston Hobby

Tue 10/21

2:22 pm-10:22 pm

1 stop10h 00m

$237

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Sat 11/8

11:36 am-11:00 pm

1 stop9h 24m

Houston Hobby

Sat 11/15

6:00 am-4:09 pm

2 stops12h 09m

$242

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Sat 10/25

2:51 pm-10:14 pm

1 stop5h 23m

Houston Hobby

Mon 10/27

6:11 pm-11:59 pm

1 stop7h 48m

$271

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Houston from

How to get the cheapest flight ticket from Ontario to Houston

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 Houston?

The month of October is, on average, the cheapest month to fly to Houston from Ontario, with most prices found around $186. The month of March is another great option to travel to Houston, with average flight prices from Ontario averaging around $196.

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

On average, the least expensive day to fly to Houston from Ontario is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $362. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Houston on Sunday is $484.

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

Our data shows that the cheapest Ontario to Houston flights are usually those with departure times at noon. Our users have found flights to Houston at noon for as low as $234. Try not to purchase tickets in the evening because they tend to be around $431. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Ontario to Houston flight route?

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

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

You are more likely to see cheaper flights to Houston from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Houston for around $236 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Houston from Ontario for as low as $179 on momondo.

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

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

Cheap Ontario to Houston flight deals and tips

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

Fastest flight time

2h 55m

Direct flights

Every day

Airports in Houston

2 airports
The fastest flight from Ontario to Houston takes 2h 55m
Direct flights go from Ontario to Houston every day.
There are 2 airports near Houston: Houston George Bush Intcntl (IAH), Houston Hobby (HOU)
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  • How far is Ontario to Houston by plane?

    Ontario and Houston are 1336.6 mi apart from one another. Typically, this will take 3h 00m by plane in normal conditions.

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

    Prices for flights from Ontario Airport to Houston were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Houston.

  • What documentation or ID do you need to fly to Houston?

    The necessary travel and health documents for your Houston trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Ontario to Houston

Compare and see reviews for airlines that fly from Ontario to Houston with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $76Free CancellationRating
5.8
3,173 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $106Free CancellationRating
6.3
8,023 reviews
Search Spirit Airlines flights
United AirlinesPriceFrom $174Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
American AirlinesPriceFrom $188Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $208Free CancellationRating
8.0
4,242 reviews
Search Southwest flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Houston. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Houston from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

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 Houston from Ontario.

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

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

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