How long is the flight from Houston to Ontario?

There are many flights that can get you from Houston to Ontario in 3h 40m. Fly via Frontier, Southwest, or United Airlines to get the fastest option. The distance between Houston and Ontario is about 1341 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines flying from Houston to Ontario round-trip?

Currently priced at $60, Frontier will fly you from Houston to Ontario and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Spirit Airlines and United Airlines - these airlines can fly you to your destination from $83 and $134, respectively. Frontier is currently priced 73% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Houston to Ontario one-way?

One-way options have recently been found by users for as low as $42 on Frontier. Other airlines that offer cheap prices include Southwest from $88 and United Airlines from $95 one-way.

How far ahead should I book a flight from Houston to Ontario?

The best time to book flights from Houston to Ontario is 55 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 Houston to Ontario?

Currently, November is the cheapest month in which you can book a flight from Houston to Ontario (average of $54). Flying from Houston to Ontario in June is currently the most expensive (average of $88). 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 Houston to Ontario?

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

What are the cheapest flights from Houston to Ontario?

On average you can expect to pay $244 for a flight from Houston to Ontario. The cheapest flight overall is $166 while the most popular route, (Houston Hobby - Ontario) is currently priced at $150.

What are the most popular airlines that fly from Houston to Ontario?

When booking a flight from Houston to Ontario, you may want to consider flying on Frontier, United Airlines or Southwest as they are the most popular for this route.

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

A simple way to save on the total cost of your ticket is to fly from Houston to Ontario in the evening. If you’re flexible enough to do this you can expect to save up to 41% on your trip compared to booking a flight in the morning.

What airport do you fly into for flights to Ontario from Houston?

Ontario (ONT), located 3.1 mi from the city center, is the airport you fly into when you book flights from Houston to Ontario. 5 airlines have flights to Ontario from Houston on a regular basis. Booking flights from Houston to Ontario should not be difficult; the airport handles an average of 0 inbound flights from Houston per day.

Can I find deals for flights from Houston to Ontario that include hotel bookings?

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

How can I find direct flights from Houston to Ontario?

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

Can I find deals for business class flights from Houston to Ontario?

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

$58+ Flights from Houston to Ontario

Round-trip from	$117 (Kiwi.com)
One-way from	$58 (Super.com)
Popular in	December
Cheapest in	February
Average price	$367

United’s Economy Plus offers extra legroom seats towards the front of the economy cabin.

United’s Polaris Lounges offer showers, napping areas, and dining for premium passengers.

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$63	Average$166	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$83	Average$278	FlexibilityNo cancel fee	On-time65%
United Airlines	Cheapest$168	Average$387	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$186	Average$371	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$224	Average$375	FlexibilityNo cancel fee	On-time63%

$58+ Cheap flights from Houston to Ontario (ONT)

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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from Houston to Ontario are usually found in February or April, booked 55 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Houston to Ontario

Cheapest flights from Houston to OntarioExplore the most affordable flight options available from Houston to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Explore the most affordable flight options available from Houston to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

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Best time to book a flight from Houston to Ontario

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

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Everything you need to know about your flight from Houston to Ontario

How far ahead should I book a flight from Houston to Ontario?

Use this chart to determine the optimal time to book a round-trip flight from Houston to Ontario. Price data was last updated on December 12, 2025.

What is the cheapest month to book a flight from Houston to Ontario?

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

Find hourly flight availability from Houston to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

What is the cheapest day to fly from Houston to Ontario?

Use this chart to determine the cheapest time to fly round-trip from Houston to Ontario. Price data was last updated on December 16, 2024.

The best insider tips for Houston to Ontario flights

AI-powered summary based on content written by travel experts. AI can make mistakes.

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

Airlines

Frontier

United Airlines

Airports

IAH

HOU

ONT

Our travel experts

Reviews of airlines servicing Ontario

See what other customers who have flown with Southwest, United Airlines, and American Airlines from Houston to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Houston to Ontario. 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 into for flights to Ontario from Houston?

How long is the flight from Houston to Ontario?

What are the cheapest airlines flying from Houston to Ontario round-trip?

What are the cheapest airlines to fly from Houston to Ontario one-way?

What are the cheapest flights from Houston to Ontario?

Can I find deals for flights from Houston to Ontario that include hotel bookings?

How can I find direct flights from Houston to Ontario?

Can I find deals for business class flights from Houston to Ontario?

What is the cheapest month to book a flight from Houston to Ontario?

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Cheapest flights from Houston to Ontario
Explore the most affordable flight options available from Houston to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.