HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$216+ Cheap flights from Grand Junction to Ontario (GJT - ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
GJT — ONT
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Grand Junction to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Grand Junction to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Grand Junction (GJT) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated junio 12, 2025.

Round-trip from

$229
(Delta)

One-way from

$216
(United Airlines)

Popular in

August

Cheapest in

March

Average price

$288
From Grand Junction Regnl to Ontario
Search Deals
One-way flight from Grand Junction Regnl to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Grand Junction to Ontario

Cheapest flights from Grand Junction to Ontario
Explore the most affordable flight options available from Grand Junction to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/46:52 pmGJT - ONT
1 stop4h 53mDelta
mar. 7/81:15 pmONT - GJT
1 stop4h 00mDelta
Deal found 6/12$229
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/157:00 amGJT - ONT
1 stop6h 33mUnited Airlines
dom. 11/235:40 amONT - GJT
1 stop4h 04mUnited Airlines
Deal found 6/10$299
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/910:21 amGJT - ONT
2 stops12h 17mAmerican Airlines
dom. 7/137:05 pmONT - GJT
1 stop4h 12mAmerican Airlines
Deal found 6/10$353

Cheapflights Fare Finder

Customize your flight search to find flights from Grand Junction to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated junio 12, 2025.
Use the filters below to find and compare flights from Grand Junction to Ontario that are best for you.

Fly from

Grand Junction

Fly to

Ontario

Route

Depart

Return

Price

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

vie. 7/4

6:52 pm-10:45 pm

1 stop4h 53m

Ontario

mar. 7/8

1:15 pm-6:15 pm

1 stop4h 00m

$229

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

sáb. 11/15

7:00 am-12:33 pm

1 stop6h 33m

Ontario

dom. 11/23

5:40 am-10:44 am

1 stop4h 04m

$299

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

mié. 7/9

10:21 am-9:38 pm

2 stops12h 17m

Ontario

dom. 7/13

7:05 pm-12:17 am

1 stop4h 12m

$353

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

vie. 8/29

1:45 pm-5:29 pm

1 stop4h 44m

$216

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Best time to book a flight from Grand Junction to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Grand Junction with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Grand Junction to Ontario

What is the cheapest month to book a flight from Grand Junction to Ontario?

Currently, August is the cheapest month in which you can book a flight from Grand Junction to Ontario (average of $246). Flying from Grand Junction to Ontario in March is currently the most expensive (average of $328). 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.

What is the cheapest time of day to fly from GJT to ONT?

Find hourly flight availability from Grand Junction to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Grand Junction to Ontario in the morning. If you’re flexible enough to do this you can expect to save up to 8% on your trip compared to booking a flight in the afternoon.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated junio 12, 2025.
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Grand Junction to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Grand Junction to Ontario round-trip?

    Currently priced at $229, Delta will fly you from Grand Junction to Ontario and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and American Airlines - these airlines can fly you to your destination from $299 and $353, respectively. Delta is currently priced 35% below the average price you’ll pay for this route.

  • Can I find deals for flights from Grand Junction to Ontario that include hotel bookings?

    Yes. In addition to deals on Grand Junction to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Grand Junction to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Grand Junction to Ontario.

  • Can I find deals for business class flights from Grand Junction to Ontario?

    Yes. Cheapflights offers flight deals from Grand Junction to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Grand Junction to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Grand Junction to Ontario (average of $246). Flying from Grand Junction to Ontario in March is currently the most expensive (average of $328). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Grand Junction to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Las Vegas flights
Denver to Los Angeles flights
Denver to San Francisco flights
Denver to San Diego flights
Denver to Ontario flights
Denver to Santa Ana flights
Denver to Sacramento flights
Denver to Reno flights
Denver to San Jose flights
Denver to Burbank flights
Denver to Palm Springs flights
Colorado Springs to Las Vegas flights
Denver to Santa Barbara flights
Denver to Monterey flights
Denver to San Luis Obispo flights
Denver to Fresno flights
Denver to Medford flights
Colorado Springs to Los Angeles flights
Denver to Oakland flights
Denver to Redding flights
Denver to Arcata flights
Denver to Santa Rosa flights
Colorado Springs to Santa Ana flights
Colorado Springs to Ontario flights
Denver to Long Beach flights
Colorado Springs to San Diego flights
Colorado Springs to Sacramento flights
Grand Junction to Las Vegas flights
Aspen to San Francisco flights
Denver to Bakersfield flights
Grand Junction to Los Angeles flights
Durango to San Francisco flights
Montrose to San Francisco flights
Colorado Springs to San Francisco flights
Durango to San Diego flights
Grand Junction to Reno flights
Durango to Los Angeles flights
Colorado Springs to Long Beach flights
Durango to Sacramento flights
Montrose to San Diego flights
Grand Junction to San Diego flights
Grand Junction to Sacramento flights
Grand Junction to Santa Ana flights
Colorado Springs to Burbank flights
Colorado Springs to San Jose flights
Durango to Las Vegas flights
Montrose to Los Angeles flights
Durango to San Jose flights
Grand Junction to San Francisco flights
Vail to Los Angeles flights

Top 2 airlines flying from Grand Junction to Ontario

Discover the top 2 airlines that operate flights from Grand Junction to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$256Average$288FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$288Average$358FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.