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$63+ Cheap flights from Ontario (ONT) to Houston

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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HOU
Jan 28 — Feb 41
Tue 1/28
Tue 2/4
1 adult, Economy
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The best prices from Ontario to Houston are usually found in September or October, booked 81 days in advance, depart on a Tuesday or Friday and return on a Monday

Cheap flight deals from Ontario to Houston

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Houston (HO1). 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 January 23, 2025.

Round-trip from

$117
(Cheapflightsfares)

One-way from

$63
(Mytrip)

Popular in

February

Cheapest in

September

Average price

$223
From Ontario to Houston
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One-way flight from Ontario to Houston
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Highest demand for flights based on searches. 14% potential increase in price ($40 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($10 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 Ontario to Houston

Cheapest flights from Ontario to Houston
Explore the most affordable flight options available from Ontario to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 23, 2025.

This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/94:04 pmONT - IAH
Nonstop3h 17mFrontier
Wed 3/1212:07 pmIAH - ONT
Nonstop3h 36mFrontier
Deal found 1/22$117
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.
Tue 2/1812:59 amONT - HOU
1 stop6h 37mFrontier
Wed 2/2610:36 amHOU - ONT
1 stop15h 30mFrontier
Deal found 1/22$118
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/116:00 amONT - IAH
1 stop7h 20mDelta
Tue 3/182:40 pmIAH - ONT
1 stop10h 03mDelta
Deal found 1/22$237
This American Airlines deal was found by Cheapflights users on 1/23. 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.
Thu 4/311:59 pmONT - HOU
1 stop6h 43mAmerican Airlines
Tue 4/82:10 pmHOU - ONT
1 stop6h 19mAmerican Airlines
Deal found 1/23$247
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/191:05 pmONT - HOU
1 stop7h 24mDelta
Wed 2/262:57 pmHOU - ONT
1 stop9h 55mDelta
Deal found 1/22$257
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1912:25 pmONT - HOU
1 stop6h 15mSouthwest
Wed 2/269:30 amHOU - ONT
Nonstop3h 35mSouthwest
Deal found 1/22$272
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/116:00 amONT - IAH
Nonstop3h 02mUnited Airlines
Tue 3/188:15 pmIAH - ONT
Nonstop3h 44mUnited Airlines
Deal found 1/22$297
This American Airlines deal was found by Cheapflights users on 1/23. 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.
Sat 2/226:13 amONT - IAH
1 stop5h 19mAmerican Airlines
Sat 3/12:15 pmIAH - ONT
1 stop6h 11mAmerican Airlines
Deal found 1/23$308
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/46:00 amONT - IAH
1 stop9h 55mAlaska Airlines
Tue 3/116:55 pmIAH - ONT
1 stop28h 32mAlaska Airlines
Deal found 1/21$319

Find flights from Ontario to Houston within your budget

Customize your flight search to find flights from Ontario to Houston 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 January 23, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Sun 3/9

4:04 pm-9:21 pm

Nonstop3h 17m

Houston George Bush Intcntl

Sat 3/15

12:07 pm-1:43 pm

Nonstop3h 36m

$117

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Wed 2/5

7:45 am-5:26 pm

1 stop7h 41m

Houston Hobby

Sat 2/15

3:43 pm-9:31 am

1 stop19h 48m

$118

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Tue 3/11

6:00 am-3:20 pm

1 stop7h 20m

Houston George Bush Intcntl

Tue 3/18

2:40 pm-10:43 pm

1 stop10h 03m

$237

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Thu 4/3

11:59 pm-8:42 am

1 stop6h 43m

Houston Hobby

Tue 4/8

2:10 pm-6:29 pm

1 stop6h 19m

$247

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Wed 2/19

1:05 pm-10:29 pm

1 stop7h 24m

Houston Hobby

Wed 2/26

2:57 pm-10:52 pm

1 stop9h 55m

$257

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Wed 2/19

12:25 pm-8:40 pm

1 stop6h 15m

Houston Hobby

Wed 2/26

9:30 am-11:05 am

Nonstop3h 35m

$272

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Tue 3/11

6:00 am-11:02 am

Nonstop3h 02m

Houston George Bush Intcntl

Tue 3/18

8:15 pm-9:59 pm

Nonstop3h 44m

$297

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Sat 2/22

6:13 am-1:32 pm

1 stop5h 19m

Houston George Bush Intcntl

Sat 3/1

2:15 pm-6:26 pm

1 stop6h 11m

$308

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Tue 3/4

6:00 am-5:55 pm

1 stop9h 55m

Houston George Bush Intcntl

Tue 3/11

6:55 pm-9:27 pm

1 stop28h 32m

$319

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Fri 6/6

7:20 pm-6:20 am

1 stop9h 00m

Houston George Bush Intcntl

Mon 6/9

12:18 pm-1:42 pm

Nonstop3h 24m

$328

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/22

Showing 1-10 of 19 results
1
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Best time to book a flight from Ontario to Houston

Have a flexible travel schedule? Discover the best time to fly to Houston from Ontario 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 Ontario to Houston

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

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

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Houston. Price data was last updated on January 17, 2025.

The best time to book flights from Ontario to Houston is 81 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?

Currently, September is the cheapest month in which you can book a flight from Ontario to Houston (average of $230). Flying from Ontario to Houston in March is currently the most expensive (average of $334). 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 ONT to HOU?

Find hourly flight availability from Ontario to Houston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 23, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to Houston in the evening. If you’re flexible enough to do this you can expect to save up to 64% on your trip compared to booking a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Ontario to Houston. Price data was last updated on June 30, 2024.

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

Rainfall in Houston by month

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

In terms of precipitation, rainfall in Houston 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 when rainfall is around 3.2 in.

Temperature in Houston by month

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

If weather is an important factor for your trip to Houston, 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).

Reviews of airlines servicing Houston

Get insights into the airlines that provide service to Houston. 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 Houston. Reviews last updated January 23, 2025.
Read through reviews of airlines operating flights from Ontario to Houston, such as Frontier, American Airlines and Southwest. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,654 reviews

Crew

8.7

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

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

Crew

8.7

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Alaska Airlines
8.0
Very good
9,704 reviews
Southwest
8.1
Very good
4,654 reviews

Crew

8.7

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Delta
8.0
Very good
8,512 reviews
Southwest
8.1
Very good
4,654 reviews

Crew

8.7

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

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

Crew

8.7

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

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

Crew

8.7

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Related info for your journey

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

    Located just 3.1 mi from the city center, Ontario is the airport most travelers will use when flying to Houston from Ontario. Booking flights from Ontario (ONT) to Houston should be relatively easy as there is 1 daily outbound flight to Houston from 6 different airlines.

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

    Frontier, at $117, was found to be the cheapest airline from Ontario to Houston.Alternate airlines to your destination round-trip include Delta and American Airlines. Frontier is priced at 51% lower than the current average price of a flight leaving 3 months from now.

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

    $63 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on United Airlines and Southwest, with prices starting from $109 and $109, respectively.

  • What are the cheapest flights from Ontario to Houston?

    The cheapest flight price from Ontario to Houston is $158. On average you can expect to pay $324. The most popular route, (Ontario - Houston Hobby), can usually be booked for $83.

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

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

  • How can I find direct flights from Ontario to Houston?

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

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

    Yes. Cheapflights offers flight deals from Ontario to Houston 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 Ontario to Houston?

    Currently, September is the cheapest month in which you can book a flight from Ontario to Houston (average of $230). Flying from Ontario to Houston in March is currently the most expensive (average of $334). 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.

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Alternative routes for Ontario to Houston

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

Discover the top 6 airlines that operate flights from Ontario to Houston. 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 January 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$86Average$175FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$90Average$201FlexibilityNo cancel feeOn-time65%
DeltaCheapest$99Average$331FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$215Average$417FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$247Average$398FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$258Average$390FlexibilityNo cancel feeOn-time63%
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