How long is the flight from Ontario to Houston George Bush Intcntl Airport?

Departing from Ontario to Houston George Bush Intcntl Airport will take you 8h 18m. The distance from Ontario to Houston George Bush Intcntl Airport is about 1330 mi.

What are the cheapest airlines flying from Ontario to Houston George Bush Intcntl Airport round-trip?

Cheapflights users have booked flights from Ontario to Houston George Bush Intcntl Airport round-trip from $86. Other airlines that can offer you cheap pricing are American Airlines, from $188, and United Airlines, from $189. Users have found that Frontier is 64% cheaper than the other options available to this destination.

How far ahead should I book a flight from Ontario to Houston George Bush Intcntl Airport?

The best time to book flights from Ontario to Houston George Bush Intcntl Airport is 24 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Ontario to Houston George Bush Intcntl Airport?

Currently, August is the cheapest month in which you can book a flight from Ontario to Houston George Bush Intcntl Airport (average of $241). Flying from Ontario to Houston George Bush Intcntl Airport in March is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest day to fly from Ontario to Houston George Bush Intcntl Airport?

Travelers seeking maximum savings on their Ontario to Houston George Bush Intcntl Airport flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Ontario to Houston George Bush Intcntl Airport

The most flights from ONT to IAH are scheduled on a Thursday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

In terms of precipitation, rainfall in Houston George Bush Intcntl Airport ranges from 3.2 - 5.9 inches per month. June is typically the wettest month, when rainfall can reach 5.9 in. February is typically the driest time to visit Houston George Bush Intcntl Airport when rainfall is around 3.2 in.

If weather is an important factor for your trip to Houston George Bush Intcntl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 53.6 F).

What are the cheapest flights from Ontario to Houston George Bush Intcntl Airport?

Looking at all options, your cheapest flight can be booked for $69. While the most popular route (Ontario - Houston George Bush Intcntl) can be booked for $105 on average, our data indicates $679 when flying from Ontario to Houston George Bush Intcntl Airport.

What are the most popular airlines that fly from Ontario to Houston George Bush Intcntl Airport?

The most popular airlines flying from Ontario to Houston George Bush Intcntl Airport are American Airlines, Frontier and United Airlines. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from Ontario to Houston George Bush Intcntl Airport?

Thursday is generally a great day to depart. Flying on this day could help you save up to 98%.

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

Users have found that booking a flight from Ontario to Houston George Bush Intcntl Airport at least 60 days early can save you up to 77% on average compared to booking a flight this week. If booking 60 days before your flight isn’t an option for you, users have found flights from Ontario to Houston George Bush Intcntl Airport for as little as $198 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $360 for flights departing within the next 3 days.

What is the cheapest month to fly from Ontario to Houston George Bush Intcntl Airport?

Our data shows that September tends to be the cheapest month to fly to Houston George Bush Intcntl Airport from Ontario. Users have commonly found prices around $219 for the month, but tickets can be as low as $66. Due to multiple factors, prepare for potentially higher prices in December.

What is the cheapest time of day to fly from ONT to IAH?

When flying from Ontario to Houston George Bush Intcntl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 65% versus a flight in the morning.

What airport do you fly from for flights from Ontario to Houston George Bush Intcntl?

Located just 3.1 mi from the city center, Ontario is the airport most travelers will use when flying to Houston George Bush Intcntl from Ontario. Booking flights from Ontario (ONT) to Houston George Bush Intcntl should be relatively easy as there is 1 daily outbound flight to Houston George Bush Intcntl from 3 different airlines.

Can I find deals for flights from Ontario to George Bush Intcntl that include hotel bookings?

Yes. In addition to deals on Ontario to George Bush Intcntl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ontario to George Bush Intcntl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to George Bush Intcntl.

Can I find deals for business class flights from Ontario to George Bush Intcntl?

Yes. Cheapflights offers flight deals from Ontario to George Bush Intcntl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$56+ Flights from Ontario to Houston George Bush Intcntl Airport

Round-trip from	$101 (Cheapflightsfares)
One-way from	$56 (Cheapflightsfares)
Popular in	February
Cheapest in	March
Average price	$198
Good round-trip deal	$193 or less
Good one-way deal	$116 or less

Frontier's UpFront Plus offers a guaranteed empty middle seat for extra comfort.

Early check-in can help secure your place onboard due to frequent overbooking.

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$86	Average$184	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$188	Average$372	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$189	Average$390	FlexibilityNo cancel fee	On-time69%

$56+ Cheap flights from Ontario (ONT) to George Bush Intcntl (IAH)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/9. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to George Bush Intcntl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Ontario to Houston George Bush Intcntl are usually found in March or April, booked 24 days in advance, depart on a Friday or Thursday and return on a Thursday

Cheap flight deals from Ontario to George Bush Intcntl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Ontario to George Bush Intcntl

Cheapest flights from Ontario to George Bush IntcntlExplore the most affordable flight options available from Ontario to George Bush Intcntl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Explore the most affordable flight options available from Ontario to George Bush Intcntl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Cheapflights Fare Finder

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

The best insider tips for Ontario to Houston George Bush Intcntl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your Ontario to Houston George Bush Intcntl Airport trip

Airlines

Frontier

United Airlines

Airports

ONT

IAH

Our travel experts

Best time to book a flight from Ontario to George Bush Intcntl

Have a flexible travel schedule? Discover the best time to fly to George Bush Intcntl from Ontario with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Houston George Bush Intcntl Airport

How far ahead should I book a flight from Ontario to Houston George Bush Intcntl Airport?

What is the cheapest month to book a flight from Ontario to Houston George Bush Intcntl Airport?

What is the cheapest time of day to fly from ONT to IAH?

What is the cheapest day to fly from Ontario to Houston George Bush Intcntl Airport?

Weekly flight availability from Ontario to Houston George Bush Intcntl Airport

Reviews of airlines servicing George Bush Intcntl

Read through reviews of airlines operating flights from Ontario to Houston George Bush Intcntl Airport, such as United Airlines, American Airlines, and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Ontario to George Bush Intcntl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Ontario to Houston George Bush Intcntl?

How long is the flight from Ontario to Houston George Bush Intcntl Airport?

What are the cheapest airlines flying from Ontario to Houston George Bush Intcntl Airport round-trip?

What are the cheapest flights from Ontario to Houston George Bush Intcntl Airport?

Can I find deals for flights from Ontario to George Bush Intcntl that include hotel bookings?

How can I find direct flights from Ontario to George Bush Intcntl?

Can I find deals for business class flights from Ontario to George Bush Intcntl?

What is the cheapest month to book a flight from Ontario to Houston George Bush Intcntl Airport?

Traveling to a place near Houston George Bush Intcntl Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to George Bush Intcntl

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Ontario to George Bush Intcntl

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Ontario to George Bush Intcntl
Explore the most affordable flight options available from Ontario to George Bush Intcntl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.