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Cheap flights from Ontario to Houston from $55

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 3/3. 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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Find the cheapest flights from Ontario to Houston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:35 am - 7:14 pm
ONT
-
IAH
8h 39m
1 stop
Frontier Logo
4:59 pm - 11:59 pm
IAH
-
ONT
9h 00m
1 stop
$138Frontier
Tue, Feb 24 - Sat, Feb 28
Frontier Logo
7:17 pm - 12:05 pm
ONT
-
IAH
14h 48m
1 stop
Frontier Logo
8:45 am - 9:34 pm
IAH
-
ONT
14h 49m
1 stop
$139Frontier
Wed, Feb 25 - Wed, Mar 4
Frontier Logo
8:35 am - 7:14 pm
ONT
-
IAH
8h 39m
1 stop
Frontier Logo
8:45 am - 9:34 pm
IAH
-
ONT
14h 49m
1 stop
$141Frontier
Tue, Feb 24 - Wed, Feb 25
Frontier Logo
6:05 am - 3:52 pm
ONT
-
IAH
7h 47m
1 stop
Frontier Logo
8:45 am - 9:34 pm
IAH
-
ONT
14h 49m
1 stop
$144Frontier
Thu, Feb 19 - Tue, Feb 24
Frontier Logo
6:05 am - 3:52 pm
ONT
-
IAH
7h 47m
1 stop
Frontier Logo
1:00 pm - 5:48 pm
IAH
-
ONT
6h 48m
1 stop
$148Frontier
Thu, Feb 19 - Mon, Feb 23
American Airlines Logo
7:30 am - 7:51 pm
ONT
-
HOU
10h 21m
1 stop
American Airlines Logo
8:21 pm - 11:46 pm
HOU
-
ONT
5h 25m
1 stop
$331American Airlines
Sat, May 2 - Wed, May 6
Southwest Logo
2:45 pm - 7:40 pm
ONT
-
HOU
2h 55mnonstop
Southwest Logo
10:50 pm - 12:25 am
HOU
-
ONT
3h 35mnonstop
$333Southwest
Thu, Mar 26 - Sat, Mar 28
Southwest Logo
6:00 am - 1:50 pm
ONT
-
HOU
5h 50m
1 stop
Southwest Logo
9:00 pm - 10:25 pm
HOU
-
ONT
3h 25mnonstop
$339Southwest
Sat, May 2 - Wed, May 6
Southwest Logo
5:25 pm - 12:45 am
ONT
-
HOU
5h 20m
1 stop
Southwest Logo
10:50 pm - 12:25 am
HOU
-
ONT
3h 35mnonstop
$343Southwest
Thu, Mar 26 - Sat, Mar 28
American Airlines Logo
11:58 pm - 9:43 am
ONT
-
HOU
7h 45m
1 stop
American Airlines Logo
12:18 pm - 4:22 pm
HOU
-
ONT
6h 04m
1 stop
$353American Airlines
Tue, Mar 10 - Tue, Mar 17

American Airlines flights from Ontario to Houston

Our best American Airlines deals on Ontario to Houston flight tickets
American Airlines
Mar 5
ONT2:39 pmOntario
7h 19m
1 stop
HOU11:58 pmHouston Hobby
Mar 9
HOU8:20 pmHouston Hobby
5h 39m
1 stop
ONT11:59 pmOntario
$353
American Airlines
Mar 8
ONT11:58 pmOntario
7h 45m
1 stop
HOU9:43 amHouston Hobby
Mar 11
HOU6:00 amHouston Hobby
6h 06m
1 stop
ONT10:06 amOntario
$391
American Airlines
Mar 25
ONT2:39 pmOntario
7h 19m
1 stop
HOU11:58 pmHouston Hobby
Apr 8
HOU6:01 amHouston Hobby
6h 08m
1 stop
ONT10:09 amOntario
$405

Southwest flights from Ontario to Houston

Our best Southwest deals on Ontario to Houston flight tickets
Southwest
Mar 7
ONT2:50 pmOntario
2h 55m
HOU7:45 pmHouston Hobby
Mar 9
HOU8:55 pmHouston Hobby
3h 35m
ONT10:30 pmOntario
$333
Southwest
Mar 5
ONT3:05 pmOntario
6h 05m
1 stop
HOU11:10 pmHouston Hobby
Mar 9
HOU8:55 pmHouston Hobby
3h 35m
ONT10:30 pmOntario
$343
Southwest
Feb 25
ONT5:15 amOntario
3h 00m
HOU10:15 amHouston Hobby
Feb 28
HOU12:10 pmHouston Hobby
3h 35m
ONT1:45 pmOntario
$345

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 January 29, 2026.
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

Tue 2/24

8:35 am-7:14 pm

1 stop8h 39m

Houston George Bush Intcntl

Sat 2/28

4:59 pm-11:59 pm

1 stop9h 00m

$138

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Wed 2/25

7:17 pm-12:05 pm

1 stop14h 48m

Houston George Bush Intcntl

Wed 3/4

8:45 am-9:34 pm

1 stop14h 49m

$139

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Tue 2/24

8:35 am-7:14 pm

1 stop8h 39m

Houston George Bush Intcntl

Wed 2/25

8:45 am-9:34 pm

1 stop14h 49m

$141

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Thu 2/19

6:05 am-3:52 pm

1 stop7h 47m

Houston George Bush Intcntl

Tue 2/24

8:45 am-9:34 pm

1 stop14h 49m

$144

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Thu 2/19

6:05 am-3:52 pm

1 stop7h 47m

Houston George Bush Intcntl

Mon 2/23

1:00 pm-5:48 pm

1 stop6h 48m

$148

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Sat 5/2

7:30 am-7:51 pm

1 stop10h 21m

Houston Hobby

Wed 5/6

8:21 pm-11:46 pm

1 stop5h 25m

$331

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Thu 3/26

2:45 pm-7:40 pm

Nonstop2h 55m

Houston Hobby

Sat 3/28

10:50 pm-12:25 am

Nonstop3h 35m

$333

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Sat 5/2

6:00 am-1:50 pm

1 stop5h 50m

Houston Hobby

Wed 5/6

9:00 pm-10:25 pm

Nonstop3h 25m

$339

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Thu 3/26

5:25 pm-12:45 am

1 stop5h 20m

Houston Hobby

Sat 3/28

10:50 pm-12:25 am

Nonstop3h 35m

$343

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Tue 3/10

11:58 pm-9:43 am

1 stop7h 45m

Houston Hobby

Tue 3/17

12:18 pm-4:22 pm

1 stop6h 04m

$353

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 March is, on average, the cheapest month to fly to Houston from Ontario, with most prices found around $196. The month of April is another great option to travel to Houston, with average flight prices from Ontario averaging around $204.

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 Friday. momondo users have found tickets for Friday departures for as low as $339. 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 $449.

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 $230. Try not to purchase tickets in the morning because they tend to be around $403. 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 $247 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 $180 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 57m

Direct flights

Every day

Airports in Houston

2 airports
The fastest flight from Ontario to Houston takes 2h 57m
Direct flights go from Ontario to Houston every day.
There are 2 airports in Houston. From Ontario there are direct flights to Houston George Bush Intcntl (IAH), Houston Hobby (HOU).
Search flight deals

  • How far is Ontario to Houston by plane?

    Ontario and Houston are 1336.6 mi apart from one another. Typically, this will take 2h 57m 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 $63Free CancellationRating
5.7
3,056 reviews
Search Frontier flights
United AirlinesPriceFrom $168Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights
American AirlinesPriceFrom $188Free CancellationRating
7.2
11,206 reviews
Search American Airlines flights
SouthwestPriceFrom $191Free CancellationRating
8.0
4,267 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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