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$51+ 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 3/29. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HOU
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 Monday and return on a Wednesday

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 February 20, 2025.

Round-trip from

$89
(Trip.com)

One-way from

$51
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$286
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. 12% potential increase in price ($31 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 20, 2025.

This Trip.com deal was found by Cheapflights users on 2/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/74:09 pmONT - IAH
Nonstop3h 02mFrontier
Wed 4/912:07 pmIAH - ONT
Nonstop3h 33mFrontier
Deal found 2/19$89
This American Airlines deal was found by Cheapflights users on 2/19. 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.
Tue 4/111:59 pmONT - HOU
1 stop6h 39mAmerican Airlines
Wed 4/99:14 amHOU - ONT
1 stop6h 35mAmerican Airlines
Deal found 2/19$237
This Delta deal was found by Cheapflights users on 2/20. 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 4/15:15 pmONT - IAH
2 stops13h 30mDelta
Wed 4/96:00 amIAH - ONT
2 stops12h 33mDelta
Deal found 2/20$247
This Southwest deal was found by Cheapflights users on 2/18. 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.
Tue 3/119:55 amONT - HOU
Nonstop2h 55mSouthwest
Wed 3/129:30 amHOU - ONT
Nonstop3h 35mSouthwest
Deal found 2/18$257
This Delta deal was found by Cheapflights users on 2/20. 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 4/15:15 pmONT - HOU
2 stops14h 21mDelta
Wed 4/92:35 pmHOU - ONT
1 stop10h 01mDelta
Deal found 2/20$262
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Wed 3/262:54 pmONT - IAH
1 stop6h 01mAmerican Airlines
Mon 3/316:00 pmIAH - ONT
1 stop6h 00mAmerican Airlines
Deal found 2/20$267
This Gotogate deal was found by Cheapflights users on 2/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2812:59 amONT - HOU
1 stop16h 25mFrontier
Sat 4/512:27 pmHOU - ONT
1 stop13h 32mFrontier
Deal found 2/18$276

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 February 20, 2025.

Fly from

Ontario

Fly to

Houston

Route

Depart

Return

Price

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Mon 4/7

4:09 pm-9:11 pm

Nonstop3h 02m

Houston George Bush Intcntl

Wed 4/9

12:07 pm-1:40 pm

Nonstop3h 33m

$89

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Tue 4/1

11:59 pm-8:38 am

1 stop6h 39m

Houston Hobby

Wed 4/9

5:00 am-9:54 am

1 stop6h 54m

$237

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Tue 4/1

5:15 pm-8:45 am

2 stops13h 30m

Houston George Bush Intcntl

Wed 4/9

6:00 am-4:33 pm

2 stops12h 33m

$247

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Tue 4/1

5:15 pm-9:36 am

2 stops14h 21m

Houston Hobby

Wed 4/9

2:35 pm-10:36 pm

1 stop10h 01m

$262

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Wed 3/26

2:54 pm-10:55 pm

1 stop6h 01m

Houston George Bush Intcntl

Mon 3/31

6:00 pm-10:00 pm

1 stop6h 00m

$267

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Mon 3/17

4:40 pm-11:05 pm

1 stop4h 25m

Houston Hobby

Tue 3/18

9:30 am-11:05 am

Nonstop3h 35m

$277

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Sun 4/6

12:59 am-9:32 am

1 stop6h 33m

Houston Hobby

Wed 4/9

10:36 am-2:27 pm

1 stop5h 51m

$279

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Sat 3/29

4:14 pm-9:31 pm

Nonstop3h 17m

$51

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Tue 4/22

6:10 am-11:13 am

Nonstop3h 03m

$109

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Tue 4/8

1:15 pm-6:15 pm

Nonstop3h 00m

$109

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 19 results
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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 February 14, 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 February 20, 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 59% 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 February 20, 2025.
Read through reviews of airlines operating flights from Ontario to Houston, such as Southwest, Alaska Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Sarah,Aug 2024

MDW - AUS

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
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Sarah,Aug 2024

MDW - AUS

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
9,697 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Sarah,Aug 2024

MDW - AUS

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
8,219 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Sarah,Aug 2024

MDW - AUS

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.

JetBlue
7.4
Good
3,070 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Sarah,Aug 2024

MDW - AUS

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
8,765 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Sarah,Aug 2024

MDW - AUS

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 are 0 daily outbound flights to Houston from 6 different airlines.

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

    Frontier, at $89, was found to be the cheapest airline from Ontario to Houston.Alternate airlines to your destination round-trip include American Airlines and Delta. Frontier is priced at 61% 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?

    $51 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 Delta, with prices starting from $109 and $119, respectively.

  • What are the cheapest flights from Ontario to Houston?

    The cheapest flight price from Ontario to Houston is $148. On average you can expect to pay $351. The most popular route, (Ontario - Houston Hobby), can usually be booked for $63.

  • 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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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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$81Average$171FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$88Average$203FlexibilityNo cancel feeOn-time65%
DeltaCheapest$99Average$346FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$208Average$415FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$214Average$373FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$286Average$397FlexibilityNo cancel feeOn-time63%
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