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Cheap flights from ONT to Houston

Recently found return fares from $97, with December the cheapest month we know of. Compare dates, then book with the partner you choose.

Cheapest months to fly

Lowest recently found return fare in each month. Tap a month to see that month's calendar.

$201 Oct2026 $100 Nov2026 $97 Dec2026 $238 Apr2027

ONT → Houston

November 2026

Mon Tue Wed Thu Fri Sat Sun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
LowerHigherLowest this month

Lowest fares for the best day

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Airports in Houston

  • IAHGeorge Bush Intercontinental
  • HOUHobby

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ONT
HOU

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More trips from ONT

All flights from ONT Houston to ONT flights
San Franciscofrom $32 Las Vegasfrom $101 Denverfrom $125 Orlandofrom $153 MEMfrom $184 Atlantafrom $186 Renofrom $189 Seattlefrom $199

FAQ

Questions about this route

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Help center Contact us
01What is the cheapest month to fly from ONT to Houston?

Based on recently found fares, December 2026 has the lowest price we know of, from $97. Prices change often, so check the calendar for current fares.

02Which airports serve Houston?

Houston is served by George Bush Intercontinental (IAH), Hobby (HOU). Searching the city code compares all of them at once.

03Are the prices on this page final?

No. They are recently found fares. When you open a deal, the partner shows the live price, including taxes and fees, before you pay.

04How can I get an alert when flights to Houston get cheaper?

Use the price alert on this page. Choose your dates or a whole month and we will email you when the fare drops.