What is the cheapest airline that flies from Ontario to Houston?

Frontier, Southwest, and American Airlines are the most popular carriers operating from Ontario to Houston

What airlines fly to Houston?

Frontier, United Airlines and Spirit Airlines are the top three most popular airlines that fly to Houston from Ontario according to our data. Frontier is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Houston. Keep in mind that there are 6 different airlines that fly to Houston on a routine basis, so you have a few additional options to choose from.

How many flights depart from Ontario to Houston on average per week?

The number of flights available between Ontario and Houston is 19 per week as of November 2025. The most frequent departure day is Mon, with 21% of weekly flights leaving on this day.

How many flights depart from Ontario to Houston on average per day?

As of November 2025, there are 2 flights per day flying from Ontario to Houston. The most common time of day flights depart is 6:00AM, with 62% of flights taking off at noon.

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?

As of November 2025, there are 5 operators available to choose from 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.

$62 Cheap Flights from Ontario to Houston in 2025/26

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Find the cheapest flights from Ontario to Houston

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Cheap round-trip flights

Enter your travel dates to find the best prices.

2:05 pm - 7:27 pmONT-IAH

3h 22mnonstop

2:51 pm - 4:33 pmIAH-ONT

3h 42mnonstop

$109Frontier

Find Deal

Fri, Dec 5 - Mon, Dec 8

12:58 am - 10:53 amONT-IAH

7h 55m1 stop

2:51 pm - 4:33 pmIAH-ONT

3h 42mnonstop

$114Frontier

Find Deal

Sat, Nov 22 - Fri, Dec 5

6:15 am - 12:21 amONT-IAH

16h 06m1 stop

2:51 pm - 4:33 pmIAH-ONT

3h 42mnonstop

$128Multiple Airlines

Find Deal

Wed, Dec 10 - Sun, Dec 14

2:59 pm - 8:21 pmONT-IAH

3h 22mnonstop

7:45 am - 9:17 pmIAH-ONT

15h 32m2 stops

$139Multiple Airlines

Find Deal

Mon, Dec 8 - Thu, Dec 11

12:55 pm - 8:06 pmONT-IAH

5h 11m1 stop

8:31 am - 12:00 pmIAH-ONT

5h 29m1 stop

$187American Airlines

Find Deal

Wed, Dec 10 - Sat, Dec 13

11:59 pm - 8:32 amONT-HOU

6h 33m1 stop

5:44 am - 9:54 amHOU-ONT

6h 10m1 stop

$187American Airlines

Find Deal

Thu, Dec 4 - Tue, Dec 9

8:55 am - 5:45 pmONT-HOU

6h 50m1 stop

5:55 am - 9:35 amHOU-ONT

5h 40m1 stop

$215Southwest

Find Deal

Thu, Dec 11 - Mon, Dec 15

10:25 pm - 9:34 amONT-HOU

9h 09m1 stop

2:32 pm - 11:04 pmHOU-ONT

10h 32m1 stop

$217Delta

Find Deal

Wed, Dec 3 - Tue, Dec 9

12:12 pm - 10:48 pmONT-HOU

8h 36m1 stop

6:00 am - 4:09 pmHOU-ONT

12h 09m2 stops

$222Delta

Find Deal

Thu, Dec 4 - Tue, Dec 9

5:25 am - 10:25 amONT-HOU

3h 00mnonstop

7:50 am - 12:00 pmHOU-ONT

6h 10m1 stop

$243Southwest

Find Deal

Wed, Dec 10 - Sun, Dec 14

Southwest flights from Ontario to Houston

Our best Southwest deals on Ontario to Houston flight tickets

Southwest

Dec 11

ONT8:55 amOntario

6h 50m

1 stop

HOU5:45 pmHouston Hobby

Dec 15

HOU5:55 amHouston Hobby

5h 40m

1 stop

ONT9:35 amOntario

$215

Find similar

Southwest

Dec 10

ONT5:25 amOntario

3h 00m

HOU10:25 amHouston Hobby

Dec 14

HOU7:50 amHouston Hobby

6h 10m

1 stop

ONT12:00 pmOntario

$243

Find similar

Southwest

Dec 10

ONT12:35 pmOntario

5h 55m

1 stop

HOU8:30 pmHouston Hobby

Dec 14

HOU7:50 amHouston Hobby

6h 10m

1 stop

ONT12:00 pmOntario

$253

Find similar

Delta flights from Ontario to Houston

Our best Delta deals on Ontario to Houston flight tickets

Delta

Dec 3

ONT10:25 pmOntario

9h 09m

1 stop

HOU9:34 amHouston Hobby

Dec 9

HOU2:32 pmHouston Hobby

10h 32m

1 stop

ONT11:04 pmOntario

$217

Find similar

Delta

Dec 4

ONT12:12 pmOntario

8h 36m

1 stop

HOU10:48 pmHouston Hobby

Dec 9

HOU6:00 amHouston Hobby

12h 09m

2 stops

ONT4:09 pmOntario

$222

Find similar

Delta

Dec 2

ONT12:12 pmOntario

8h 36m

1 stop

HOU10:48 pmHouston Hobby

Dec 9

HOU2:32 pmHouston Hobby

10h 32m

1 stop

ONT11:04 pmOntario

$333

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Fri 12/5

2:05 pm-7:27 pm

Nonstop3h 22m

Houston George Bush Intcntl

Mon 12/8

2:51 pm-4:33 pm

Nonstop3h 42m

$109

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Sat 11/22

12:58 am-10:53 am

1 stop7h 55m

Houston George Bush Intcntl

Fri 12/5

2:51 pm-4:33 pm

Nonstop3h 42m

$114

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Wed 12/10

6:15 am-12:21 am

1 stop16h 06m

Houston George Bush Intcntl

Sun 12/14

2:51 pm-4:33 pm

Nonstop3h 42m

$128

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Mon 12/8

2:59 pm-8:21 pm

Nonstop3h 22m

Houston George Bush Intcntl

Thu 12/11

7:45 am-9:17 pm

2 stops15h 32m

$139

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Wed 12/10

12:55 pm-8:06 pm

1 stop5h 11m

Houston George Bush Intcntl

Sat 12/13

8:31 am-12:00 pm

1 stop5h 29m

$187

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Thu 12/4

11:59 pm-8:32 am

1 stop6h 33m

Houston Hobby

Tue 12/9

5:44 am-9:54 am

1 stop6h 10m

$187

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Thu 12/11

8:55 am-5:45 pm

1 stop6h 50m

Houston Hobby

Mon 12/15

5:55 am-9:35 am

1 stop5h 40m

$215

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Wed 12/3

10:25 pm-9:34 am

1 stop9h 09m

Houston Hobby

Tue 12/9

2:32 pm-11:04 pm

1 stop10h 32m

$217

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Thu 12/4

12:12 pm-10:48 pm

1 stop8h 36m

Houston Hobby

Tue 12/9

6:00 am-4:09 pm

2 stops12h 09m

$222

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Wed 12/10

5:25 am-10:25 am

Nonstop3h 00m

Houston Hobby

Sun 12/14

7:50 am-12:00 pm

1 stop6h 10m

$243

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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

Prices

Airlines

Other information

What is the cheapest month to fly to Houston?

The month of April is, on average, the cheapest month to fly to Houston from Ontario, with most prices found around $192. 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 Friday. momondo users have found tickets for Friday departures for as low as $355. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Houston on Saturday is $462.

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 $224. Try not to purchase tickets in the evening because they tend to be around $411. 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 $244 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 $182 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?
As of November 2025, there are 5 operators available to choose from 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
Frontier	PriceFrom $74	Free Cancellation	Rating 5.8 3,113 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $86	Free Cancellation	Rating 6.3 8,135 reviews	Search Spirit Airlines flights
United Airlines	PriceFrom $170	Free Cancellation	Rating 7.4 9,012 reviews	Search United Airlines flights
American Airlines	PriceFrom $188	Free Cancellation	Rating 7.2 11,045 reviews	Search American Airlines flights
Southwest	PriceFrom $210	Free Cancellation	Rating 8.0 4,236 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.

An easier way to manage your Houston trip

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Cheap flights from Ontario to Houston from $63

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 2/11. 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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Filter for what you want

Filter for what you want

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Find the cheapest flights from Ontario to Houston

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Southwest flights from Ontario to Houston

Our best Southwest deals on Ontario to Houston flight tickets

Delta flights from Ontario to Houston

Our best Delta deals on Ontario to Houston flight tickets

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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 April is, on average, the cheapest month to fly to Houston from Ontario, with most prices found around $192. 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?

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

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?

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.

What is the cheapest airline that flies from Ontario to Houston?

Frontier, Southwest, and American Airlines are the most popular carriers operating from Ontario to Houston

What airlines fly to Houston?

How many flights depart from Ontario to Houston on average per day?

As of November 2025, there are 2 flights per day flying from Ontario to Houston. The most common time of day flights depart is 6:00AM, with 62% of flights taking off at noon.

How many flights depart from Ontario to Houston on average per week?

The number of flights available between Ontario and Houston is 19 per week as of November 2025. The most frequent departure day is Mon, with 21% of weekly flights leaving on this day.

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

Direct flights

Airports in Houston

How far is Ontario to Houston by plane?

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

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?

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

Best airlines flying from Ontario to Houston

Compare and see reviews for airlines that fly from Ontario to Houston with momondo

Why use momondo?

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

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

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

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

An easier way to manage your Houston trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Texas