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$181+ 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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
GJT — ONT
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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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 July 29, 2025.

Round-trip from

$229
(Delta)

One-way from

$181
(Delta)

Popular in

January

Cheapest in

March

Average price

$328
From Grand Junction Regnl to Ontario
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One-way flight from Grand Junction Regnl to Ontario
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Highest demand for flights based on searches. 1% potential increase in price ($7 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 29, 2025.

This Delta deal was found by Cheapflights users on 7/27. 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.
Wed 12/31:10 pmGJT - ONT
1 stop4h 04mDelta
Sat 12/65:05 pmONT - GJT
1 stop4h 25mDelta
Deal found 7/27$229
This American Airlines deal was found by Cheapflights users on 7/27. 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.
Sat 11/16:00 amGJT - ONT
2 stops10h 24mAmerican Airlines
Sat 11/86:20 amONT - GJT
1 stop4h 09mAmerican Airlines
Deal found 7/27$234
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Tue 8/1211:29 amGJT - ONT
1 stop6h 56mUnited Airlines
Sat 8/165:05 amONT - GJT
1 stop6h 31mUnited Airlines
Deal found 7/28$249

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 July 29, 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

Wed 12/3

1:10 pm-4:14 pm

1 stop4h 04m

Ontario

Wed 12/10

5:05 pm-10:30 pm

1 stop4h 25m

$229

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Sat 11/1

6:00 am-3:24 pm

2 stops10h 24m

Ontario

Sat 11/8

6:20 am-11:29 am

1 stop4h 09m

$234

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Tue 8/12

11:29 am-5:25 pm

1 stop6h 56m

Ontario

Sat 8/16

5:05 am-12:36 pm

1 stop6h 31m

$249

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Thu 8/28

6:00 am-8:55 am

1 stop3h 55m

$181

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Sat 11/15

10:36 am-6:20 pm

2 stops8h 44m

$195

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Mon 9/29

1:35 pm-5:23 pm

1 stop4h 48m

$225

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Sat 8/16

11:45 am-1:26 pm

2 stops26h 41m

$398

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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 July 29, 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.

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 July 29, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and United Airlines from Grand Junction to Ontario. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,977 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,899 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 American Airlines and United Airlines - these airlines can fly you to your destination from $234 and $249, respectively. Delta is currently priced 34% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Grand Junction to Ontario one-way?

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $181. American Airlines flights start at $195 while deals on United Airlines start at $225 one-way.

  • 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.

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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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$256Average$288FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$288Average$344FlexibilityNo cancel feeOn-time71%

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