Cheap flights from Ontario to Houston from $92 ONT → HOU, IAH

Found recently, and the cheapest we hold

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $140 to $318.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other 9-night return fares leaving within 3 days of 16 Dec to compare.

Every date we hold

169 fares on 10 departure dates

Which month looks cheapest?

December 2026 is the cheapest month — from $180.

Found recently, and the cheapest we hold

What have prices looked like?

Over 44 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $49 to $238.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

No. We hold one-way fares on 1 other departure date within 3 days of 16 Dec, and it is not cheaper.

Every date we hold

6 fares on 6 departure dates

Which month looks cheapest?

December 2026 is the cheapest month — from $77.

Return

Fares 14 to 29 days before departure were typically 54% lower than 0 to 6 days before departure.

From the cheapest return each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

One-way

The cheapest fares were 14 to 29 days before departure.

From the cheapest one-way each day between 24 Sept and 11 Nov (44 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

How much is a return flight from Ontario to Houston?

The cheapest return found recently is $239 with Frontier Airlines, 16 Dec to 25 Dec, found 3 days ago. The cheapest return we hold, of any age, is $180 with Frontier Airlines, 4 Dec to 7 Dec, found 7 days ago. The cheapest return fare on each of 10 departure dates is usually $206 to $256.

How much is a one-way flight from Ontario to Houston?

The cheapest one-way found recently is $92 with Frontier Airlines, 16 Dec, found 3 days ago. The cheapest one-way we hold, of any age, is $77 with Frontier Airlines, 3 Dec, found 7 days ago. The cheapest one-way fare on each of 6 departure dates is usually $85 to $228.

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

December 2026 is the cheapest month for a return, from $180, 4 Dec to 7 Dec, found 7 days ago. It is the cheapest month for a one-way too, from $77, 3 Dec, found 7 days ago.

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

In 49 days of prices between 24 Sept and 11 Nov, return fares 14 to 29 days before departure were typically 54% lower than 0 to 6 days before departure. In 44 days of prices between 24 Sept and 11 Nov, one-way fares were cheapest 14 to 29 days before departure.

Is there a direct flight from Ontario to Houston?

Yes, the cheapest nonstop return found recently is $405 with United Airlines, 16 Dec to 25 Dec, found 3 days ago. The cheapest nonstop one-way found recently is $1,482 with United Airlines, 10 Oct 2027, found 6 days ago.

How long is the flight from Ontario to Houston?

The cheapest nonstop one-way found recently, with United Airlines on 10 Oct 2027, takes 3 h 10 min from Ontario International Airport (ONT) to George Bush Intercontinental Airport (IAH). The cheapest one-way found recently, with Frontier Airlines on 16 Dec, takes 8 h with 1 stop.

Which airlines have the cheapest flights from Ontario to Houston?

Between 19 Nov and 9 Jan 2027, Frontier Airlines has the cheapest return on 8 of the 10 departure dates we hold, Southwest Airlines on 1 and United Airlines on 1. Between 3 Dec and 10 Oct 2027, Frontier Airlines has the cheapest one-way on 4 of the 6 departure dates we hold, American Airlines on 1 and United Airlines on 1.