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Cheap flights from Ontario to Houston from $72

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 10/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Ontario to Houston

Cheap round-trip flights

Frontier Logo
12:28 pm - 5:47 pmONT-IAH
3h 19mnonstop
Frontier Logo
5:07 pm - 6:35 pmIAH-ONT
3h 28mnonstop
$101Frontier
Find Deal
Sun, Sep 21 - Sun, Sep 28
Frontier Logo
1:46 pm - 7:11 pmONT-IAH
3h 25mnonstop
Frontier Logo
5:23 pm - 6:49 pmIAH-ONT
3h 26mnonstop
$103Frontier
Find Deal
Thu, Nov 6 - Sun, Nov 9
Logo
8:00 am - 5:50 amONT-IAH
19h 50m1 stop
Logo
5:07 pm - 6:35 pmIAH-ONT
3h 28mnonstop
$156
Find Deal
Tue, Sep 16 - Thu, Sep 25
Logo
12:28 pm - 5:47 pmONT-IAH
3h 19mnonstop
Logo
8:00 am - 2:12 pmIAH-ONT
8h 12m1 stop
$161
Find Deal
Fri, Sep 26 - Tue, Sep 30
Southwest Logo
5:25 am - 10:25 amONT-HOU
3h 00mnonstop
Southwest Logo
2:05 pm - 3:35 pmHOU-ONT
3h 30mnonstop
$191Southwest
Find Deal
Fri, Dec 5 - Sun, Dec 14
Southwest Logo
4:20 pm - 12:10 amONT-HOU
5h 50m1 stop
Southwest Logo
1:40 pm - 2:55 pmHOU-ONT
3h 15mnonstop
$201Southwest
Find Deal
Mon, Oct 27 - Thu, Oct 30
American Airlines Logo
6:10 am - 2:03 pmONT-HOU
5h 53m1 stop
American Airlines Logo
9:04 am - 1:54 pmHOU-ONT
6h 50m1 stop
$211American Airlines
Find Deal
Tue, Sep 30 - Wed, Oct 1
Delta Logo
10:00 pm - 9:49 amONT-HOU
9h 49m1 stop
Delta Logo
1:13 pm - 7:15 pmHOU-ONT
8h 02m1 stop
$237Delta
Find Deal
Wed, Sep 24 - Tue, Sep 30
American Airlines Logo
11:59 pm - 8:29 amONT-HOU
6h 30m1 stop
American Airlines Logo
8:58 am - 1:43 pmHOU-ONT
6h 45m1 stop
$260American Airlines
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Sat, Oct 11 - Wed, Oct 15
Delta Logo
12:00 pm - 9:40 pmONT-HOU
7h 40m1 stop
Delta Logo
1:00 pm - 7:42 pmHOU-ONT
8h 42m1 stop
$298Delta
Find Deal
Thu, Dec 4 - Tue, Dec 9

American Airlines flights from Ontario to Houston

Our best American Airlines deals on Ontario to Houston flight tickets
American Airlines
Sep 30
ONT6:10 amOntario
5h 53m
1 stop
HOU2:03 pmHouston Hobby
Oct 1
HOU9:04 amHouston Hobby
6h 50m
1 stop
ONT1:54 pmOntario
$211
Find similar
American Airlines
Oct 11
ONT11:59 pmOntario
6h 30m
1 stop
HOU8:29 amHouston Hobby
Oct 15
HOU8:58 amHouston Hobby
6h 45m
1 stop
ONT1:43 pmOntario
$260
Find similar
American Airlines
Oct 2
ONT2:30 pmOntario
7h 18m
1 stop
HOU11:48 pmHouston Hobby
Oct 7
HOU10:12 amHouston Hobby
5h 31m
1 stop
ONT1:43 pmOntario
$261
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Southwest flights from Ontario to Houston

Our best Southwest deals on Ontario to Houston flight tickets
Southwest
Dec 5
ONT5:25 amOntario
3h 00m
HOU10:25 amHouston Hobby
Dec 14
HOU2:05 pmHouston Hobby
3h 30m
ONT3:35 pmOntario
$191
Find similar
Southwest
Oct 27
ONT4:20 pmOntario
5h 50m
1 stop
HOU12:10 amHouston Hobby
Oct 30
HOU1:40 pmHouston Hobby
3h 15m
ONT2:55 pmOntario
$201
Find similar
Southwest
Oct 30
ONT12:55 pmOntario
3h 00m
HOU5:55 pmHouston Hobby
Nov 3
HOU1:40 pmHouston Hobby
5h 40m
1 stop
ONT5:20 pmOntario
$234
Find similar

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 August 26, 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

Sun 9/21

12:28 pm-5:47 pm

Nonstop3h 19m

Houston George Bush Intcntl

Sun 9/28

5:07 pm-6:35 pm

Nonstop3h 28m

$101

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Thu 11/6

1:46 pm-7:11 pm

Nonstop3h 25m

Houston George Bush Intcntl

Sun 11/9

5:23 pm-6:49 pm

Nonstop3h 26m

$103

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Tue 9/16

8:00 am-5:50 am

1 stop19h 50m

Houston George Bush Intcntl

Thu 9/25

5:07 pm-6:35 pm

Nonstop3h 28m

$156

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Fri 9/26

12:28 pm-5:47 pm

Nonstop3h 19m

Houston George Bush Intcntl

Tue 9/30

8:00 am-2:12 pm

1 stop8h 12m

$161

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Fri 12/5

5:25 am-10:25 am

Nonstop3h 00m

Houston Hobby

Sun 12/14

2:05 pm-3:35 pm

Nonstop3h 30m

$191

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Mon 10/27

4:20 pm-12:10 am

1 stop5h 50m

Houston Hobby

Thu 10/30

1:40 pm-2:55 pm

Nonstop3h 15m

$201

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Tue 9/30

6:10 am-2:03 pm

1 stop5h 53m

Houston Hobby

Wed 10/1

9:04 am-1:54 pm

1 stop6h 50m

$211

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Wed 9/24

10:00 pm-9:49 am

1 stop9h 49m

Houston Hobby

Tue 9/30

1:13 pm-7:15 pm

1 stop8h 02m

$237

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Sat 10/11

11:59 pm-8:29 am

1 stop6h 30m

Houston Hobby

Wed 10/15

8:58 am-1:43 pm

1 stop6h 45m

$260

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Thu 12/4

12:00 pm-9:40 pm

1 stop7h 40m

Houston Hobby

Tue 12/9

1:00 pm-7:42 pm

1 stop8h 42m

$298

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 September is, on average, the cheapest month to fly to Houston from Ontario, with most prices found around $185. The month of October is another great option to travel to Houston, with average flight prices from Ontario averaging around $189.

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 $376. 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 $477.

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 $243. Try not to purchase tickets in the evening because they tend to be around $445. 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 $231 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 $163 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

3h 00m

Direct flights

Every day

Airports in Houston

2 airports
The fastest flight from Ontario to Houston takes 3h 00m
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
Spirit AirlinesPriceFrom $74Free CancellationRating
6.3
8,031 reviews
Search Spirit Airlines flights
FrontierPriceFrom $78Free CancellationRating
5.8
3,200 reviews
Search Frontier flights
DeltaPriceFrom $173Free CancellationRating
7.9
7,979 reviews
Search Delta flights
United AirlinesPriceFrom $178Free CancellationRating
7.4
8,943 reviews
Search United Airlines flights
American AirlinesPriceFrom $188Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $214Free CancellationRating
8.0
4,243 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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