Frontier's UpFront Plus offers empty middle seats for added comfort on 3-hour flights.
Frontier's Zone 1 boarding available with carry-on purchase, ensuring early boarding.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $116 (Super.com) |
One-way from | $59 (Mytrip) |
Popular in | December |
Cheapest in | February |
Average price | $338 |
Good round-trip deal | $220 or less |
Good one-way deal | $115 or less |
Fly from
Fly to
Route
Depart
Return
Price
HoustonOntario
IAH - ONT
IAHONT
Houston George Bush Intcntl
Thu 1/29
3:11 pm-12:20 am
1 stop11h 09m
Ontario
Sat 1/31
7:15 am-3:13 pm
1 stop5h 58m
HoustonOntario
IAH - ONT
IAHONT
Houston George Bush Intcntl
Wed 1/21
7:00 am-3:08 pm
1 stop10h 08m
Ontario
Tue 1/27
7:00 am-4:55 pm
1 stop7h 55m
HoustonOntario
IAH - ONT
IAHONT
Houston George Bush Intcntl
Fri 1/16
5:55 pm-5:03 pm
1 stop25h 08m
Ontario
Fri 1/23
7:00 am-4:55 pm
1 stop7h 55m
HoustonOntario
IAH - ONT
IAHONT
Houston George Bush Intcntl
Thu 3/5
5:33 pm-11:52 pm
1 stop8h 19m
Ontario
Wed 3/11
6:14 am-5:53 pm
2 stops9h 39m
HoustonOntario
IAH - ONT
IAHONT
Houston George Bush Intcntl
Fri 2/6
5:55 pm-8:36 pm
2 stops28h 41m
Ontario
Mon 2/9
5:59 pm-4:55 pm
1 stop20h 56m
HoustonOntario
IAH - ONT
IAHONT
Houston George Bush Intcntl
Thu 1/15
8:15 pm-9:58 pm
Nonstop3h 43m
Ontario
Thu 1/22
1:53 pm-12:59 am
1 stop9h 06m
HoustonOntario
IAH - ONT
IAHONT
Houston George Bush Intcntl
Mon 1/12
5:55 pm-5:03 pm
1 stop25h 08m
Ontario
Sun 1/18
7:00 am-4:55 pm
1 stop7h 55m
HoustonOntario
IAH - ONT
IAHONT
Houston George Bush Intcntl
Wed 3/4
5:33 pm-11:52 pm
1 stop8h 19m
Ontario
Thu 3/12
7:00 am-5:53 pm
1 stop8h 53m
HoustonOntario
IAH - ONT
IAHONT
Houston George Bush Intcntl
Mon 1/12
8:15 pm-9:58 pm
Nonstop3h 43m
Ontario
Thu 1/15
6:00 am-11:12 am
Nonstop3h 12m
HoustonOntario
IAH - ONT
IAHONT
Houston George Bush Intcntl
Sun 2/8
8:15 pm-9:58 pm
Nonstop3h 43m
Ontario
Tue 2/10
8:00 am-1:12 pm
Nonstop3h 12m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
The best time to book flights from Houston George Bush Intcntl Airport to Ontario is 84 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.
Currently, November is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Ontario (average of $54). Flying from Houston George Bush Intcntl Airport to Ontario in June is currently the most expensive (average of $88). 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.
A simple way to save on the total cost of your ticket is to fly from Houston George Bush Intcntl Airport to Ontario in the morning. If you’re flexible enough to do this you can expect to save up to 40% on your trip compared to booking a flight in the evening.
Travelers seeking maximum savings on their Houston George Bush Intcntl Airport to Ontario flight should consider departing on Saturday afternoons when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Food
Overall
Boarding
Crew
Entertainment
Comfort
Reviews
Sebrena,Oct 2025
IAH - RSW
Food
Overall
Boarding
Crew
Entertainment
Comfort
Reviews
Sebrena,Oct 2025
IAH - RSW
Food
Overall
Boarding
Crew
Entertainment
Comfort
Reviews
Sebrena,Oct 2025
IAH - RSW
Food
Overall
Boarding
Crew
Entertainment
Comfort
Reviews
Sebrena,Oct 2025
IAH - RSW
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$63 | Average$167 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$177 | Average$389 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$236 | Average$362 | FlexibilityNo cancel fee | On-time71% |