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

The number of flights available between Ontario and Houston is 15 per week as of December 2025. The most frequent departure day is Mon, with 33% of weekly flights leaving on this day.

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 34% 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 often are flights from Ontario to Houston delayed?

Historically, on average around 11% of flights between Ontario and Houston have experienced a delay on any given week. The average delay length over the past 12 months has been 132 minutes.

Which airline has the best punctuality record on Ontario to Houston flights?

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 8% of their flights experiencing any sort of delay.

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

Alaska Airlines, Southwest, and Delta are the most popular carriers operating from Ontario to Houston

What day of the week experiences the fewest flight delays on this route?

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

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

As of December 2025, there are 2 flights per day flying from Ontario to Houston. The most common time of day flights depart is 6:00AM, with 45% of flights taking off in the afternoon.

What is the most punctual flight time for Ontario to Houston flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

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 December 2025, there are 4 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.

$58 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.

3:46 pm - 9:08 pm

ONT

IAH

3h 22mnonstop

12:30 pm - 2:23 pm

IAH

ONT

3h 53mnonstop

$118Frontier

Mon, Jan 12 - Mon, Jan 19

3:46 pm - 9:08 pm

ONT

IAH

3h 22mnonstop

10:30 am - 3:07 pm

IAH

ONT

6h 37m1 stop

$122Frontier

Mon, Jan 12 - Tue, Jan 27

7:15 am - 3:13 pm

ONT

IAH

5h 58m1 stop

7:00 pm - 11:24 pm

IAH

ONT

6h 24m1 stop

$123Frontier

Sat, Jan 31 - Sat, Jan 31

7:17 pm - 12:05 pm

ONT

IAH

14h 48m1 stop

10:31 am - 12:23 pm

IAH

ONT

3h 52mnonstop

$124Frontier

Wed, Feb 25 - Mon, Mar 2

11:59 pm - 9:44 am

ONT

HOU

7h 45m1 stop

10:15 am - 6:39 pm

HOU

ONT

10h 24m1 stop

$329American Airlines

Mon, Feb 16 - Wed, Feb 18

1:50 pm - 6:50 pm

ONT

HOU

3h 00mnonstop

9:00 pm - 10:25 pm

HOU

ONT

3h 25mnonstop

$333Southwest

Thu, Apr 30 - Tue, May 5

1:50 pm - 6:50 pm

ONT

HOU

3h 00mnonstop

1:35 pm - 5:50 pm

HOU

ONT

6h 15m1 stop

$343Southwest

Thu, Apr 30 - Sat, May 9

12:55 pm - 5:55 pm

ONT

HOU

3h 00mnonstop

8:55 pm - 10:30 pm

HOU

ONT

3h 35mnonstop

$345Southwest

Mon, Mar 2 - Thu, Mar 5

7:16 am - 6:06 pm

ONT

HOU

8h 50m1 stop

6:00 am - 10:08 am

HOU

ONT

6h 08m1 stop

$346American Airlines

Sat, Jan 17 - Sat, Jan 24

11:59 pm - 9:44 am

ONT

HOU

7h 45m1 stop

8:20 pm - 11:59 pm

HOU

ONT

5h 39m1 stop

$353American Airlines

Thu, Mar 5 - Mon, Mar 9

Southwest flights from Ontario to Houston

Our best Southwest deals on Ontario to Houston flight tickets

Southwest

Jan 28

ONT5:15 amOntario

3h 00m

HOU10:15 amHouston Hobby

Jan 28

HOU3:35 pmHouston Hobby

3h 35m

ONT5:10 pmOntario

$333

Find similar

Southwest

Mar 25

ONT6:00 amOntario

4h 45m

1 stop

HOU12:45 pmHouston Hobby

Apr 1

HOU9:30 pmHouston Hobby

3h 35m

ONT11:05 pmOntario

$339

Find similar

Southwest

Jan 28

ONT5:15 amOntario

3h 00m

HOU10:15 amHouston Hobby

Jan 28

HOU1:40 pmHouston Hobby

5h 15m

1 stop

ONT4:55 pmOntario

$343

Find similar

Delta flights from Ontario to Houston

Our best Delta deals on Ontario to Houston flight tickets

Delta

Feb 11

ONT12:41 pmOntario

7h 52m

1 stop

HOU10:33 pmHouston Hobby

Feb 17

HOU5:25 amHouston Hobby

8h 37m

1 stop

ONT12:02 pmOntario

$416

Find similar

Delta

Jan 20

ONT10:30 pmOntario

9h 51m

1 stop

HOU10:21 amHouston Hobby

Jan 27

HOU5:45 amHouston Hobby

12h 30m

2 stops

ONT4:15 pmOntario

$421

Find similar

Delta

Mar 24

ONT10:25 pmOntario

10h 14m

1 stop

HOU10:39 amHouston Hobby

Mar 29

HOU6:00 amHouston Hobby

7h 40m

1 stop

ONT11:40 amOntario

$426

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Mon 1/12

3:46 pm-9:08 pm

Nonstop3h 22m

Houston George Bush Intcntl

Mon 1/19

12:30 pm-2:23 pm

Nonstop3h 53m

$118

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Mon 1/12

3:46 pm-9:08 pm

Nonstop3h 22m

Houston George Bush Intcntl

Tue 1/27

10:30 am-3:07 pm

1 stop6h 37m

$122

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Sat 1/31

7:15 am-3:13 pm

1 stop5h 58m

Houston George Bush Intcntl

Sat 1/31

7:00 pm-11:24 pm

1 stop6h 24m

$123

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Wed 2/25

7:17 pm-12:05 pm

1 stop14h 48m

Houston George Bush Intcntl

Mon 3/2

10:31 am-12:23 pm

Nonstop3h 52m

$124

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Mon 2/16

11:59 pm-9:44 am

1 stop7h 45m

Houston Hobby

Wed 2/18

10:15 am-6:39 pm

1 stop10h 24m

$329

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Thu 4/30

1:50 pm-6:50 pm

Nonstop3h 00m

Houston Hobby

Tue 5/5

9:00 pm-10:25 pm

Nonstop3h 25m

$333

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Thu 4/30

1:50 pm-6:50 pm

Nonstop3h 00m

Houston Hobby

Sat 5/9

1:35 pm-5:50 pm

1 stop6h 15m

$343

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Mon 3/2

12:55 pm-5:55 pm

Nonstop3h 00m

Houston Hobby

Thu 3/5

8:55 pm-10:30 pm

Nonstop3h 35m

$345

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Sat 1/17

7:16 am-6:06 pm

1 stop8h 50m

Houston Hobby

Sat 1/24

6:00 am-10:08 am

1 stop6h 08m

$346

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Thu 3/5

11:59 pm-9:44 am

1 stop7h 45m

Houston Hobby

Mon 3/9

8:20 pm-11:59 pm

1 stop5h 39m

$353

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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

Delays

Other information

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 $203. The month of April is another great option to travel to Houston, with average flight prices from Ontario averaging around $203.

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 $342. 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 $443.

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 $221. Try not to purchase tickets in the morning because they tend to be around $405. 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 $245 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 $185 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 in Houston. From Ontario there are direct flights to 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 2h 55m 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 December 2025, there are 4 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 3,074 reviews	Search Frontier flights
United Airlines	PriceFrom $169	Free Cancellation	Rating 7.4 9,106 reviews	Search United Airlines flights
American Airlines	PriceFrom $188	Free Cancellation	Rating 7.2 11,050 reviews	Search American Airlines flights
Southwest	PriceFrom $191	Free Cancellation	Rating 8.0 4,253 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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Cheap flights from Ontario to Houston from $58

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 1/12. 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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How to get the cheapest flight ticket from Ontario to Houston

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 $203. The month of April is another great option to travel to Houston, with average flight prices from Ontario averaging around $203.

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?

Alaska Airlines, Southwest, and Delta are the most popular carriers operating from Ontario to Houston

What airlines fly to Houston?

How often are flights from Ontario to Houston delayed?

Historically, on average around 11% of flights between Ontario and Houston have experienced a delay on any given week. The average delay length over the past 12 months has been 132 minutes.

What is the most punctual flight time for Ontario to Houston flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Ontario to Houston flights?

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 8% of their flights experiencing any sort of delay.

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

As of December 2025, there are 2 flights per day flying from Ontario to Houston. The most common time of day flights depart is 6:00AM, with 45% of flights taking off in the afternoon.

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

The number of flights available between Ontario and Houston is 15 per week as of December 2025. The most frequent departure day is Mon, with 33% 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