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$41+ 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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — ONT
janv. 27 — févr. 31
lun. 1/27
lun. 2/3
1 adult, Economy
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The best prices from Houston to Ontario are usually found in September or July, booked 43 days in advance, depart on a Monday or Wednesday and return on a Friday

Cheap flight deals from Houston to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Houston (HO1) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated janvier 22, 2025.

Round-trip from

$121
(Mytrip)

One-way from

$42
(Frontier)

Popular in

November

Cheapest in

September

Average price

$209
From Houston to Ontario
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One-way flight from Houston to Ontario
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Highest demand for flights based on searches. 13% potential increase in price ($31 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find flight deals from Houston to Ontario

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 janvier 22, 2025.

This FlightHub deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 2/77:10 pmIAH - ONT
Nonstop3h 36mFrontier
lun. 2/106:34 pmONT - IAH
1 stop27h 00mFrontier
Deal found 1/22$120
This Mytrip deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 2/153:43 pmHOU - ONT
1 stop10h 26mFrontier
ven. 2/2112:59 amONT - HOU
1 stop11h 44mFrontier
Deal found 1/22$127
This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/188:15 pmIAH - ONT
Nonstop3h 44mUnited Airlines
mar. 2/256:00 amONT - IAH
Nonstop3h 02mUnited Airlines
Deal found 1/21$237
This American Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 3/129:08 amHOU - ONT
1 stop6h 52mAmerican Airlines
mer. 3/1911:59 pmONT - HOU
1 stop6h 39mAmerican Airlines
Deal found 1/21$237
This Delta deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/317:35 pmIAH - ONT
1 stop6h 21mDelta
mer. 4/306:00 amONT - IAH
1 stop7h 25mDelta
Deal found 1/21$247
This American Airlines deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 2/156:00 amIAH - ONT
1 stop6h 01mAmerican Airlines
sam. 2/222:54 pmONT - IAH
1 stop5h 16mAmerican Airlines
Deal found 1/22$309
This Southwest deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 2/218:25 amHOU - ONT
Nonstop3h 40mSouthwest
jeu. 2/271:35 pmONT - HOU
1 stop8h 30mSouthwest
Deal found 1/21$312
This Delta deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/186:00 amHOU - ONT
1 stop7h 55mDelta
mar. 2/251:05 pmONT - HOU
1 stop7h 24mDelta
Deal found 1/21$343

Find flights from Houston to Ontario within your budget

Customize your flight search to find flights from Houston to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated janvier 22, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

HoustonOntario

IAH - ONT

IAHONT

Houston George Bush Intcntl

mer. 2/19

12:09 pm-5:58 pm

1 stop7h 49m

Ontario

mer. 2/26

2:43 pm-11:07 am

1 stop18h 24m

$120

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

sam. 2/15

3:43 pm-9:31 am

1 stop19h 48m

Ontario

ven. 2/21

12:59 am-2:43 pm

1 stop11h 44m

$126

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

mer. 3/12

9:08 am-2:00 pm

1 stop6h 52m

Ontario

mer. 3/19

11:59 pm-8:38 am

1 stop6h 39m

$237

HoustonOntario

IAH - ONT

IAHONT

Houston George Bush Intcntl

lun. 3/31

7:35 pm-11:56 pm

1 stop6h 21m

Ontario

mer. 4/30

6:00 am-3:25 pm

1 stop7h 25m

$247

HoustonOntario

IAH - ONT

IAHONT

Houston George Bush Intcntl

mer. 3/12

2:15 pm-6:33 pm

1 stop6h 18m

Ontario

mer. 3/19

4:30 pm-11:38 pm

1 stop5h 08m

$272

HoustonOntario

IAH - ONT

IAHONT

Houston George Bush Intcntl

jeu. 2/13

8:15 pm-9:59 pm

Nonstop3h 44m

Ontario

lun. 2/17

6:00 am-11:02 am

Nonstop3h 02m

$281

HoustonOntario

IAH - ONT

IAHONT

Houston George Bush Intcntl

lun. 5/26

12:18 pm-1:42 pm

Nonstop3h 24m

Ontario

mar. 6/3

6:00 am-6:14 pm

1 stop10h 14m

$298

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

ven. 2/21

8:25 am-10:05 am

Nonstop3h 40m

Ontario

jeu. 2/27

1:35 pm-12:05 am

1 stop8h 30m

$312

HoustonOntario

IAH - ONT

IAHONT

Houston George Bush Intcntl

ven. 2/28

7:25 am-11:02 am

1 stop29h 37m

Ontario

mar. 3/4

6:00 am-5:55 pm

1 stop9h 55m

$329

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

mar. 2/18

6:00 am-11:55 am

1 stop7h 55m

Ontario

mar. 2/25

1:05 pm-10:29 pm

1 stop7h 24m

$343

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/22

Showing 1-10 of 19 results
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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.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Houston to Ontario

Get recent, data-driven insights about flights from Houston to Ontario including ideal travel times, pricing trends, and more.

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 January 17, 2025.

The best time to book flights from Houston to Ontario is 25 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, August is the cheapest month in which you can book a flight from Houston to Ontario (average of $246). Flying from Houston to Ontario in March is currently the most expensive (average of $310). 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 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 janvier 22, 2025.

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 55% on your trip compared to booking a flight at noon.

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 October 27, 2024.

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

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

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.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated janvier 22, 2025.
See what other customers who have flown with Frontier, Delta 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.
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.2

Entertainment

7.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very good
4,654 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.2

Entertainment

7.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very good
9,707 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.2

Entertainment

7.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very good
8,514 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.2

Entertainment

7.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

United Airlines
7.4
Good
8,975 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.2

Entertainment

7.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.2

Entertainment

7.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

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?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly into when you book flights from Houston to Ontario. 6 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 1 inbound flight from Houston per day.

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

    Currently priced at $121, 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 United Airlines and Delta - these airlines can fly you to your destination from $237 and $247, respectively. Frontier is currently priced 43% 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 United Airlines from $109 and Southwest from $109 one-way.

  • What are the cheapest flights from Houston to Ontario?

    On average you can expect to pay $322 for a flight from Houston to Ontario. The cheapest flight overall is $184 while the most popular route, (Houston Hobby - Ontario) is currently priced at $83.

  • 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.

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

    Currently, August is the cheapest month in which you can book a flight from Houston to Ontario (average of $246). Flying from Houston to Ontario in March is currently the most expensive (average of $310). 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.

See more FAQs

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Alternative routes for Houston to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Houston to Ontario

Discover the top 6 airlines that operate flights from Houston to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated janvier 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$90Average$177FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$98Average$194FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$177Average$368FlexibilityNo cancel feeOn-time69%
DeltaCheapest$216Average$306FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$247Average$382FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$267Average$400FlexibilityNo cancel feeOn-time63%
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