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. Monday 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, Atlas Air have had the least number of delays on this route over the last 12 months; with no flights being classified as delayed.

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 is the cheapest airline that flies from Ontario to Houston George Bush Intcntl?

Frontier, United Airlines, and American Airlines are the most popular carriers operating from Ontario to Houston George Bush Intcntl

How often are flights from Ontario to Houston delayed?

Historically, on average around 12% 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 151 minutes.

What airlines fly to Houston George Bush Intcntl Airport?

United Airlines, Frontier and Spirit Airlines are the top three most popular airlines that fly to Houston George Bush Intcntl Airport from Ontario according to our data. United Airlines is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Houston George Bush Intcntl Airport. Keep in mind that there are 5 different airlines that fly to Houston George Bush Intcntl Airport on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Ontario Airport to Houston George Bush Intcntl Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Ontario Airport to Houston George Bush Intcntl Airport?

As of October 2025, there are 3 operators available to choose from for flights from Ontario Airport to Houston George Bush Intcntl Airport.

How old do you have to be to fly from Ontario Airport to Houston George Bush Intcntl Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Houston George Bush Intcntl Airport.

What documentation or ID do you need to fly to Houston George Bush Intcntl Airport?

The necessary travel and health documents for your Houston George Bush Intcntl Airport 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.

$65 Cheap Flights from Ontario to Houston George Bush Intcntl Airport in 2025/26

Q: How many flights depart from Ontario to Houston George Bush Intcntl Airport on average per week?

The number of flights available between Ontario and Houston George Bush Intcntl Airport is 5 per week as of October 2025. The most frequent departure day is Thu, with 40% of weekly flights leaving on this day.

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6:15 am - 8:34 pmONT-IAH

12h 19m1 stop

2:51 pm - 4:33 pmIAH-ONT

3h 42mnonstop

$112Frontier

Find Deal

Wed, Dec 3 - Fri, Dec 5

1:46 pm - 7:11 pmONT-IAH

3h 25mnonstop

5:23 pm - 6:49 pmIAH-ONT

3h 26mnonstop

$114Frontier

Find Deal

Thu, Nov 13 - Sun, Nov 16

1:46 pm - 7:11 pmONT-IAH

3h 25mnonstop

5:23 pm - 6:49 pmIAH-ONT

3h 26mnonstop

$117Frontier

Find Deal

Thu, Nov 13 - Sun, Nov 16

1:46 pm - 7:11 pmONT-IAH

3h 25mnonstop

5:23 pm - 6:49 pmIAH-ONT

3h 26mnonstop

$118Frontier

Find Deal

Thu, Nov 13 - Fri, Nov 14

1:46 pm - 7:11 pmONT-IAH

3h 25mnonstop

7:00 am - 9:27 pmIAH-ONT

16h 27m1 stop

$119Frontier

Find Deal

Thu, Nov 13 - Tue, Nov 18

6:00 am - 4:28 pmONT-IAH

8h 28m1 stop

5:23 pm - 6:49 pmIAH-ONT

3h 26mnonstop

$122Frontier

Find Deal

Thu, Nov 13 - Sun, Nov 16

3:20 pm - 12:31 amONT-IAH

7h 11m1 stop

2:51 pm - 4:33 pmIAH-ONT

3h 42mnonstop

$124Frontier

Find Deal

Fri, Dec 5 - Sun, Dec 7

2:05 pm - 7:27 pmONT-IAH

3h 22mnonstop

6:45 am - 3:06 pmIAH-ONT

10h 21m1 stop

$125Frontier

Find Deal

Fri, Dec 5 - Sun, Dec 7

1:46 pm - 7:11 pmONT-IAH

3h 25mnonstop

6:21 pm - 9:17 pmIAH-ONT

28h 56m1 stop

$133Multiple Airlines

Find Deal

Mon, Nov 10 - Tue, Dec 2

6:15 am - 7:32 pmONT-IAH

11h 17m2 stops

2:51 pm - 4:33 pmIAH-ONT

3h 42mnonstop

$152Multiple Airlines

Find Deal

Fri, Dec 5 - Sun, Dec 7

Frontier flights from Ontario to Houston George Bush Intcntl Airport

Our best Frontier deals on Ontario to Houston George Bush Intcntl Airport flight tickets

Frontier

Dec 3

ONT6:15 amOntario

12h 19m

1 stop

IAH8:34 pmHouston George Bush Intcntl

Dec 5

IAH2:51 pmHouston George Bush Intcntl

3h 42m

ONT4:33 pmOntario

$112

Find similar

Frontier

Nov 13

ONT1:46 pmOntario

3h 25m

IAH7:11 pmHouston George Bush Intcntl

Nov 16

IAH5:23 pmHouston George Bush Intcntl

3h 26m

ONT6:49 pmOntario

$114

Find similar

Frontier

Nov 13

ONT1:46 pmOntario

3h 25m

IAH7:11 pmHouston George Bush Intcntl

Nov 16

IAH5:23 pmHouston George Bush Intcntl

3h 26m

ONT6:49 pmOntario

$117

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Ontario to Houston George Bush Intcntl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Wed 12/3

6:15 am-8:34 pm

1 stop12h 19m

Houston George Bush Intcntl

Fri 12/5

2:51 pm-4:33 pm

Nonstop3h 42m

$112

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Thu 11/13

1:46 pm-7:11 pm

Nonstop3h 25m

Houston George Bush Intcntl

Sun 11/16

5:23 pm-6:49 pm

Nonstop3h 26m

$114

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Thu 11/13

1:46 pm-7:11 pm

Nonstop3h 25m

Houston George Bush Intcntl

Sun 11/16

5:23 pm-6:49 pm

Nonstop3h 26m

$117

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Thu 11/13

1:46 pm-7:11 pm

Nonstop3h 25m

Houston George Bush Intcntl

Fri 11/14

5:23 pm-6:49 pm

Nonstop3h 26m

$118

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Thu 11/13

1:46 pm-7:11 pm

Nonstop3h 25m

Houston George Bush Intcntl

Tue 11/18

7:00 am-9:27 pm

1 stop16h 27m

$119

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Thu 11/13

6:00 am-4:28 pm

1 stop8h 28m

Houston George Bush Intcntl

Sun 11/16

5:23 pm-6:49 pm

Nonstop3h 26m

$122

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Fri 12/5

3:20 pm-12:31 am

1 stop7h 11m

Houston George Bush Intcntl

Sun 12/7

2:51 pm-4:33 pm

Nonstop3h 42m

$124

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Fri 12/5

2:05 pm-7:27 pm

Nonstop3h 22m

Houston George Bush Intcntl

Sun 12/7

6:45 am-3:06 pm

1 stop10h 21m

$125

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Mon 11/10

1:46 pm-7:11 pm

Nonstop3h 25m

Houston George Bush Intcntl

Tue 12/2

6:21 pm-9:17 pm

1 stop28h 56m

$133

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Fri 12/5

6:15 am-7:32 pm

2 stops11h 17m

Houston George Bush Intcntl

Sun 12/7

2:51 pm-4:33 pm

Nonstop3h 42m

$152

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Houston George Bush Intcntl Airport

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 George Bush Intcntl Airport?

The month of March is, on average, the cheapest month to fly to Houston George Bush Intcntl Airport from Ontario, with most prices found around $185. If you are unable to visit Houston George Bush Intcntl Airport during the month of March, then departing from Ontario during the month April is also very affordable. Most momondo users find prices during this month for around $188.

What is the cheapest day to depart on your flight to Houston George Bush Intcntl Airport?

The cheapest day to depart from Ontario to Houston George Bush Intcntl Airport is on a Friday. Travelers who choose to depart for Houston George Bush Intcntl Airport on a Friday will often find tickets for as low as $288. 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 George Bush Intcntl Airport on Sunday is $422.

What is the cheapest time of day to depart on your flight to Houston George Bush Intcntl Airport?

Our data shows that the cheapest Ontario to Houston George Bush Intcntl Airport flights are usually those with departure times at noon. Our users have found flights to Houston George Bush Intcntl Airport at noon for as low as $218. Try not to purchase tickets in the evening because they tend to be around $414. 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 George Bush Intcntl flight route?

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

How far in advance should I book a flight to Houston George Bush Intcntl Airport?

You are more likely to see cheaper flights to Houston George Bush Intcntl Airport from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Houston George Bush Intcntl Airport for around $237 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Houston George Bush Intcntl Airport from Ontario for as low as $177 on momondo.

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

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

How have Ontario to Houston George Bush Intcntl Airport flight prices changed over time?

As of October 2025, prices for Ontario to Houston George Bush Intcntl Airport flights are approximately 42% cheaper when compared to flights at the same time last year.

When to book flights from Ontario to Houston George Bush Intcntl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Houston George Bush Intcntl Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Houston George Bush Intcntl Airport (ONT to IAH) flight deals and tips

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

Best Price Found	$133
Fastest flight time	3h 06m
Direct flights	Every day

The best one-way flight to Houston George Bush Intcntl Airport from Ontario in the past 72 hours is $133. The best round-trip flight deal from Ontario to Houston George Bush Intcntl Airport found on momondo in the last 72 hours is $229.

The fastest flight from Ontario to Houston George Bush Intcntl Airport takes 3h 06m

Direct flights go from Ontario to Houston George Bush Intcntl Airport every day.

Search flight deals

How far is Ontario to Houston George Bush Intcntl by plane?
A flight from Ontario to Houston George Bush Intcntl will travel around 1333.0 mi. By plane, this route typically takes 3h 17m.
When did momondo last update prices for flights from Ontario Airport to Houston George Bush Intcntl Airport?
Prices for flights from Ontario Airport to Houston George Bush Intcntl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Ontario Airport to Houston George Bush Intcntl Airport?
As of October 2025, there are 3 operators available to choose from for flights from Ontario Airport to Houston George Bush Intcntl Airport.
How old do you have to be to fly from Ontario Airport to Houston George Bush Intcntl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Houston George Bush Intcntl Airport.
What documentation or ID do you need to fly to Houston George Bush Intcntl Airport?
The necessary travel and health documents for your Houston George Bush Intcntl Airport 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.
What is the most popular plane model from Ontario to Houston George Bush Intcntl Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Ontario to Houston George Bush Intcntl Airport is Boeing 737-900 (13.61% of total bookings). The next most popular plane models are Airbus A320neo (13.15%), Airbus A321neo (12.43%), and Airbus A320-100/200 (9.83%).
What is the most popular airline from Ontario to Houston George Bush Intcntl Airport?
Based on momondo bookings for flights between Ontario and Houston George Bush Intcntl Airport, the leading airline is Frontier, making up 69% of the total bookings. Other popular airlines include United Airlines with 26% and American Airlines with 4%.

Best airlines flying from Ontario to Houston George Bush Intcntl Airport

Compare and see reviews for airlines that fly from Ontario to Houston George Bush Intcntl Airport with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $84	Free Cancellation	Rating 5.8 3,123 reviews	Search Frontier flights
American Airlines	PriceFrom $188	Free Cancellation	Rating 7.2 11,030 reviews	Search American Airlines flights
United Airlines	PriceFrom $189	Free Cancellation	Rating 7.4 8,998 reviews	Search United Airlines flights

United Airlines Flights From Ontario to Houston George Bush Intcntl Airport
United Airlines flies from Ontario to Houston George Bush Intcntl Airport around 3 times per week, with 8,998 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Ontario to Houston George Bush Intcntl Airport in the last 72 hours was $189 (round-trip), much lower than the average airfare cost of $385 for United Airlines flights on this route.
Frontier Flights From Ontario to Houston George Bush Intcntl Airport
$84 is the best Frontier flight deal from Ontario to Houston George Bush Intcntl Airport found on momondo over the last 72 hours. The average Frontier ticket price found was closer to $186, however, with flight time and availability significantly affecting the price. Frontier (5.8/10 from 3,123 user reviews) flies into Houston George Bush Intcntl Airport from Ontario 2 times in an average week so prices can vary.

The Woodlands

Katy

Conroe

Cypress

Humble

Spring

Montgomery

Tomball

Livingston

Jersey Village

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Houston for you.

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

Yes. momondo allows you to filter the results for Ontario to Houston flights to just show those with flexible booking policies.

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?

Of course. momondo tracks the price of Ontario to Houston flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cheap flights from Ontario to Houston from $65

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 11/13. 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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Frontier flights from Ontario to Houston George Bush Intcntl Airport

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Use the filters below to find and compare flights from Ontario to Houston George Bush Intcntl Airport that are best for you.

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How to get the cheapest flight ticket from Ontario to Houston George Bush Intcntl Airport

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 George Bush Intcntl Airport?

What is the cheapest day to depart on your flight to Houston George Bush Intcntl Airport?

What is the cheapest time of day to depart on your flight to Houston George Bush Intcntl Airport?

What is the cheapest Ontario to Houston George Bush Intcntl flight route?

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

How far in advance should I book a flight to Houston George Bush Intcntl Airport?

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

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

How have Ontario to Houston George Bush Intcntl Airport flight prices changed over time?

As of October 2025, prices for Ontario to Houston George Bush Intcntl Airport flights are approximately 42% cheaper when compared to flights at the same time last year.

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

Frontier, United Airlines, and American Airlines are the most popular carriers operating from Ontario to Houston George Bush Intcntl

What airlines fly to Houston George Bush Intcntl Airport?

How often are flights from Ontario to Houston delayed?

Historically, on average around 12% 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 151 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. Monday 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, Atlas Air have had the least number of delays on this route over the last 12 months; with no flights being classified as delayed.

How many flights depart from Ontario to Houston George Bush Intcntl Airport on average per week?

The number of flights available between Ontario and Houston George Bush Intcntl Airport is 5 per week as of October 2025. The most frequent departure day is Thu, with 40% of weekly flights leaving on this day.

When to book flights from Ontario to Houston George Bush Intcntl Airport

Cheap Ontario to Houston George Bush Intcntl Airport (ONT to IAH) flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

How far is Ontario to Houston George Bush Intcntl by plane?

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

How many operators does momondo search for flights from Ontario Airport to Houston George Bush Intcntl Airport?

How old do you have to be to fly from Ontario Airport to Houston George Bush Intcntl Airport?

What documentation or ID do you need to fly to Houston George Bush Intcntl Airport?

What is the most popular plane model from Ontario to Houston George Bush Intcntl Airport?

What is the most popular airline from Ontario to Houston George Bush Intcntl Airport?

Best airlines flying from Ontario to Houston George Bush Intcntl Airport

Compare and see reviews for airlines that fly from Ontario to Houston George Bush Intcntl Airport with momondo

United Airlines Flights From Ontario to Houston George Bush Intcntl Airport

Frontier Flights From Ontario to Houston George Bush Intcntl Airport

Traveling to a place near Houston?

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 George Bush Intcntl Airport 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 Houston

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Popular flights according to clicks in the last 7 days on momondo