Nonstop flights from Houston to Ontario

3 airlines fly from 2 Houston airports (IAH and HOU) to Ontario (ONT), with up to 3 flights a day.

IAHONT

Routes

2 airport pairs

When they leave

Houston time

6:10a8:50pFirst departure 6:10 AM, last 8:50 PM

Three in the morning, 6:10 AM to 8:25 AM, then two in the afternoon, 12:45 PM to 4:47 PM, then two in the evening, 8:30 PM to 8:50 PM.

Every flight

Earliest first

6:10 AM→7:32 AMIAH to ONTFrontier AirlinesUntil Nov 30Airbus A320neoDaily
8:05 AM→9:15 AMHOU to ONTSouthwest AirlinesBoeing 737Mon, Thu, Fri
8:25 AM→9:35 AMHOU to ONTSouthwest AirlinesBoeing 737 MAX 8Sat
12:45 PM→2:00 PMHOU to ONTSouthwest AirlinesBoeing 737Sun
4:47 PM→6:12 PMIAH to ONTUnited AirlinesBoeing 737Sat
8:30 PM→9:59 PMIAH to ONTUnited AirlinesBoeing 737Mon, Thu, Sun
8:50 PM→10:05 PMHOU to ONTSouthwest AirlinesBoeing 737 MAX 8Tue, Wed

Schedules last checked Sep 22, 2026. Times are local.

Flying from Houston to Ontario

Frontier Airlines flies daily on the Airbus A320neo. Southwest Airlines flies daily on the Boeing 737 and Boeing 737 MAX 8. United Airlines flies 4 times a week on the Boeing 737.

There are 2 or 3 flights every day of the week. The first arrival in Ontario is at 7:32 AM and the last at 10:05 PM.

IAH to ONT is the busiest airport pair, with 11 flights a week, then HOU to ONT with 7.

On IAH to ONT, Frontier Airlines flies it until Nov 30.

Flying back, Ontario to Houston has 21 nonstop flights a week.

Return flights

Ontario to HoustonView

Find the cheapest day to fly from Houston to Ontario.

Schedules as of Oct 9, 2026.