Cheap flights from Houston George Bush Intcntl Airport to Los Angeles from $48

In general, November is the cheapest month to fly from Houston George Bush Intcntl Airport to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $133. If you aren’t able to travel during the month of November, then book flights to Ontario from Houston George Bush Intcntl Airport during September instead. Flights to Ontario in September, while not as cheap as those in November, still average around $164.

The cheapest day to depart on your flight to Ontario is on a Thursday when prices can be found for as low as $350. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Houston George Bush Intcntl Airport to Ontario for around $473.

In the afternoon is the cheapest time of day to fly from Houston George Bush Intcntl Airport to Ontario when you can find flight prices for as low as $203. Flying to Ontario in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $339 on average. Flights to Ontario from Houston George Bush Intcntl Airport in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Houston George Bush Intcntl to Ontario for the best Houston George Bush Intcntl - Ontario flight prices

You are more likely to see cheaper flights to Ontario from Houston George Bush Intcntl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $225 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Houston George Bush Intcntl Airport for as low as $154 on momondo.

No. A direct flight is the cheapest option for a flight between Houston George Bush Intcntl Airport to Ontario.

As of April 2026, prices for Houston George Bush Intcntl Airport to Ontario flights are approximately 35% more expensive when compared to flights at the same time last year.

Delta, Alaska Airlines, and United Airlines are the most popular carriers operating from Houston George Bush Intcntl to Ontario

Frontier, United Airlines and Spirit Airlines are the top three most popular airlines that fly to Ontario from Houston George Bush Intcntl Airport according to our data. Frontier is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 5 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

2 flights are operational daily from Houston George Bush Intcntl Airport to Ontario as of April 2026. The most popular departure time for this route is 8:00PM, with 80% of flights per day taking off in the evening.

As of April 2026, 15 flights take off from Houston George Bush Intcntl Airport and land in Ontario each week. The most common flight departure day for this route is Thu, with 27% of weekly flights taking off on this day.