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C$103 Cheap Flights from Houston George Bush Intercntl. (IAH) to Ontario International (ONT)

Compare Houston George Bush Intercntl. to Ontario International flight deals

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Flight deals from Houston George Bush Intercntl. to Ontario International

Looking for a cheap last-minute deal or the best return flight from Houston George Bush Intercntl. Airport to Ontario International Airport? If you want to travel next month, return fares start from C$305. Find the lowest prices on one-way and return tickets right here.
Ontario.C$103 per passenger.Departing Sat., Aug. 1.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Houston George Bush Intercntl. on Sat., Aug. 1, arriving in Ontario International.Price includes taxes and charges.From C$103, select.
Ontario.C$110 per passenger.Departing Tue., Sep. 22.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Tue., Sep. 22, arriving in Ontario International.Price includes taxes and charges.From C$110, select.
Ontario.C$140 per passenger.Departing Thu., Sep. 24.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Houston George Bush Intercntl. on Thu., Sep. 24, arriving in Ontario International.Price includes taxes and charges.From C$140, select.
Ontario.C$144 per passenger.Departing Tue., Jun. 23.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Tue., Jun. 23, arriving in Ontario International.Price includes taxes and charges.From C$144, select.
Ontario.C$144 per passenger.Departing Tue., Jul. 7.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Tue., Jul. 7, arriving in Ontario International.Price includes taxes and charges.From C$144, select.
Ontario.C$150 per passenger.Departing Wed., Jul. 22.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Houston George Bush Intercntl. on Wed., Jul. 22, arriving in Ontario International.Price includes taxes and charges.From C$150, select.
Ontario.C$168 per passenger.Departing Tue., Jun. 23.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Houston George Bush Intercntl. on Tue., Jun. 23, arriving in Ontario International.Price includes taxes and charges.From C$168, select.
Ontario.C$169 per passenger.Departing Mon., Oct. 26.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Houston George Bush Intercntl. on Mon., Oct. 26, arriving in Ontario International.Price includes taxes and charges.From C$169, select.
Ontario.C$192 per passenger.Departing Wed., Nov. 4.One-way flight with United.Outbound direct flight with United departs from Houston George Bush Intercntl. on Wed., Nov. 4, arriving in Ontario International.Price includes taxes and charges.From C$192, select.
Ontario.C$262 per passenger.Departing Thu., Dec. 17.One-way flight with United.Outbound direct flight with United departs from Houston George Bush Intercntl. on Thu., Dec. 17, arriving in Ontario International.Price includes taxes and charges.From C$262, select.
Ontario.C$278 per passenger.Departing Thu., Mar. 11.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from Houston George Bush Intercntl. on Thu., Mar. 11, arriving in Ontario International.Price includes taxes and charges.From C$278, select.
Ontario.C$278 per passenger.Departing Mon., Jan. 18.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from Houston George Bush Intercntl. on Mon., Jan. 18, arriving in Ontario International.Price includes taxes and charges.From C$278, select.
Ontario.C$279 per passenger.Departing Sat., Feb. 6.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from Houston George Bush Intercntl. on Sat., Feb. 6, arriving in Ontario International.Price includes taxes and charges.From C$279, select.
Ontario.C$311 per passenger.Departing Thu., May 28.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Thu., May 28, arriving in Ontario International.Price includes taxes and charges.From C$311, select.
Ontario.C$503 per passenger.Departing Thu., May 28.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Houston George Bush Intercntl. on Thu., May 28, arriving in Ontario International.Price includes taxes and charges.From C$503, select.

Find the cheapest month to fly from Houston George Bush Intercntl. to Ontario International from C$103 one-way

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Houston George Bush Intercntl. to Ontario International flights are currently cheapest in August.
May
from C$311
Jun.
from C$144
Jul.
from C$144
Aug.
from C$103
Sep.
from C$110
Oct.
from C$169
Nov.
from C$192
Dec.
from C$262
Jan.
from C$278
Feb.
from C$279
Mar.
from C$278
Apr.
Find prices

Which airlines fly from Houston George Bush Intercntl. to Ontario International?

Houston George Bush Intercntl. to Ontario International: Alternative routes

Compare routes from Houston George Bush Intercntl. to Ontario below. You may find an airport to fly into that's cheaper, faster, or easier than Ontario International.

Ontario International

4km from central Ontario
ClosestCheapest
from C$103
Search flights

San Bernardino Norton AFB

39km from central Ontario
from C$400
Search flights

Santa Ana John Wayne

48km from central Ontario
from C$153
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Long Beach Municipal

54km from central Ontario
from C$157
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Hawthorne

65km from central Ontario
from C$311
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Burbank

67km from central Ontario
from C$145
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Los Angeles International

71km from central Ontario
from C$112
Search flights

Houston to Ontario: Flight information

The things to know before you go.
Cheapest flight foundC$103
Cheapest month to flyAugust
Average flight time3 hrs, 30 mins
Most popular airlineLufthansa
Average flights per week21

Finding cheap flights from Houston George Bush Intercntl. to Ontario International: Frequently asked questions

The best price we found for a return flight from Houston George Bush Intercntl. to Ontario International is C$206. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
3 hours and 30 minutes is the average flight time from Houston George Bush Intercntl. to Ontario International.
Lufthansa, United and Frontier Airlines fly direct from Houston George Bush Intercntl. to Ontario International.
As of May 2026, there are 21 flights per week flying from Houston George Bush Intercntl. to Ontario International.
The cheapest month to fly from Houston George Bush Intercntl. to Ontario International is usually July.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Houston George Bush Intercntl. Airport to Ontario International Airport on Monday, July 27, 2026.
Yes – the average flight time is 3 hours and 30 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Ontario International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Ontario is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Frontier Airlines offers the cheapest flight tickets to Ontario International.

Traveling from George Bush Intercontinental Airport (IAH) to Ontario International Airport (ONT): what you need to know

  • The average time for a direct flight from George Bush Intercontinental Airport to Ontario International Airport is 3 hours 16 minutes. Ontario's timezone is UTC-7, making Ontario 2 hours behind Houston.

  • Every week, there are 13 flights from George Bush Intercontinental Airport to Ontario International Airport. If you'd like to jet off as early as possible, take the 06:00 United Airlines flight. If you'd rather make the most of your day before flying, the last flight from IAH to ONT is 21:00 with Frontier Airlines.

  • Heading off during a peak period like public or school holidays? Expect longer lines at check-in and security. To play it safe, arrive up to four hours before international flights and two hours ahead of domestic departures.

  • If you'd like to have a stopover for your flight from George Bush Intercontinental Airport to Ontario International Airport, just uncheck 'Direct flights only' and look through your options. Here are the popular stopovers between IAH and ONT:

    • Dallas Love Field

    • Phoenix Sky Harbor International Airport

    • Harry Reid Airport (formerly McCarran Airport)

How to find the cheapest flights from George Bush Intercontinental Airport (IAH) to Ontario International Airport (ONT)

  • The lowest price we've seen for a one-way ticket from George Bush Intercontinental Airport to Ontario International Airport is C$103. For a return flight on this route, the best price is C$206. Depending on the availability and when you book, these fares can change.

  • Get cheap flight tickets from IAH to ONT by booking 9 months ahead. Based on our research, that's the sweet spot for landing a bargain.

  • Schedule your trip for May. That's the cheapest month for flight tickets from George Bush Intercontinental Airport to Ontario International Airport. If you're flexible with your dates, try out the 'Whole month' tool to see the cheapest price across each month.

  • Finding a cheap ticket from IAH to ONT is easy with Price Alerts. Simply set up one of these automatic alerts and we'll let you know as soon as the price has dropped.

  • Tailor your trip with filters. Select your preferred arrival and departure times, airlines and total journey duration. You can also sort your results by 'Cheapest,' 'Fastest' or 'Best' flights from George Bush Intercontinental Airport to Ontario International Airport.

Handy information about George Bush Intercontinental Airport (IAH)

Arriving at Ontario International Airport (ONT)

Getting from Ontario International Airport (ONT) to central Ontario

  • From Ontario International Airport, Ontario is approximately 6 kilometres away. It takes around 10 minutes to reach the center driving.

  • If you're using public transport, expect a journey of about 1 hour and 28 minutes.

When to fly to Ontario International Airport (ONT)

  • The quietest month for a flight from George Bush Intercontinental Airport to Ontario International Airport is May, while August is the most popular. Choose the ideal time to visit Ontario based on whether you prefer a laid-back vibe or a more bustling atmosphere.

  • When booking your flight from George Bush Intercontinental Airport to Ontario International Airport, consider the kind of weather you like. August is the warmest month in Ontario, with temperatures ranging from 15ºC to 35ºC.

  • If you want cooler conditions, search for a cheap ticket from IAH to ONT in January. Average temperatures are between 4ºC and 23ºC then.

More about Ontario

Complete your Ontario trip with hotels and a car rental

  • After you've secured your cheap ticket to Ontario International Airport, explore the lowest prices and exclusive rates for hotels. You can also compare a range of car rental companies in one go to get the best car rental price for your Ontario getaway.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.