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$146+ 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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
GJT — ONT
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
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 septiembre 11, 2025.

Round-trip from

$269
(American Airlines)

One-way from

$146
(Kiwi.com)

Popular in

October

Cheapest in

March

Average price

$322
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. 22% potential increase in price ($107 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in September 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 septiembre 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/10. 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.
vie. 9/2611:46 amGJT - ONT
1 stop5h 19mAmerican Airlines
mar. 9/306:10 amONT - GJT
1 stop4h 06mAmerican Airlines
Deal found 9/10$269
This American Airlines deal was found by Cheapflights users on 9/10. 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.
jue. 10/26:38 pmGJT - ONT
1 stop4h 10mAmerican Airlines
mié. 10/86:15 amONT - GJT
1 stop4h 30mAmerican Airlines
Deal found 9/10$318
This United Airlines deal was found by Cheapflights users on 9/9. 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.
jue. 9/255:30 amGJT - ONT
2 stops7h 43mUnited Airlines
lun. 9/295:05 amONT - GJT
1 stop4h 41mUnited Airlines
Deal found 9/9$323
This United Airlines deal was found by Cheapflights users on 9/11. 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.
jue. 9/2511:27 amGJT - ONT
1 stop6h 56mUnited Airlines
jue. 10/25:05 amONT - GJT
1 stop6h 23mUnited Airlines
Deal found 9/11$329
This United Airlines deal was found by Cheapflights users on 9/10. 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.
mié. 9/241:45 pmGJT - ONT
1 stop4h 44mUnited Airlines
sáb. 9/275:05 amONT - GJT
1 stop6h 23mUnited Airlines
Deal found 9/10$339
This United Airlines deal was found by Cheapflights users on 9/10. 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.
vie. 9/261:35 pmGJT - ONT
2 stops10h 17mUnited Airlines
mar. 9/305:05 amONT - GJT
1 stop4h 41mUnited Airlines
Deal found 9/10$345
This United Airlines deal was found by Cheapflights users on 9/11. 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.
lun. 9/221:45 pmGJT - ONT
1 stop4h 44mUnited Airlines
lun. 9/295:05 amONT - GJT
1 stop4h 41mUnited Airlines
Deal found 9/11$369
This United Airlines deal was found by Cheapflights users on 9/11. 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.
mar. 9/2311:25 amGJT - ONT
2 stops10h 08mUnited Airlines
mar. 9/305:05 amONT - GJT
1 stop4h 41mUnited Airlines
Deal found 9/11$374
This Delta deal was found by Cheapflights users on 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/95:55 amGJT - ONT
1 stop4h 10mDelta
dom. 10/126:00 amONT - GJT
1 stop15h 29mDelta
Deal found 9/10$397
This United Airlines deal was found by Cheapflights users on 9/10. 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.
jue. 11/67:00 amGJT - ONT
1 stop6h 33mUnited Airlines
dom. 11/95:05 amONT - GJT
1 stop4h 39mUnited Airlines
Deal found 9/10$415

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 septiembre 11, 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. 9/26

11:46 am-4:05 pm

1 stop5h 19m

Ontario

mar. 9/30

6:10 am-11:16 am

1 stop4h 06m

$269

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

jue. 10/2

6:38 pm-9:48 pm

1 stop4h 10m

Ontario

mié. 10/8

6:15 am-11:45 am

1 stop4h 30m

$318

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

vie. 2/6

7:00 am-12:47 pm

1 stop6h 47m

Ontario

sáb. 2/14

1:00 pm-8:27 pm

1 stop6h 27m

$319

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

jue. 9/25

5:30 am-12:13 pm

2 stops7h 43m

Ontario

lun. 9/29

5:05 am-10:46 am

1 stop4h 41m

$323

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

jue. 9/25

1:35 pm-10:52 pm

2 stops10h 17m

Ontario

jue. 10/2

5:05 am-12:28 pm

1 stop6h 23m

$334

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

mié. 9/24

1:45 pm-5:29 pm

1 stop4h 44m

Ontario

sáb. 9/27

5:05 am-12:28 pm

1 stop6h 23m

$339

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

vie. 9/26

1:35 pm-10:52 pm

2 stops10h 17m

Ontario

mar. 9/30

5:05 am-10:46 am

1 stop4h 41m

$345

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

vie. 1/30

6:10 pm-12:47 pm

1 stop19h 37m

Ontario

sáb. 2/7

5:05 am-10:54 am

1 stop4h 49m

$385

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

jue. 10/9

5:55 am-9:05 am

1 stop4h 10m

Ontario

dom. 10/12

6:00 am-10:29 pm

1 stop15h 29m

$397

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

jue. 11/6

7:00 am-12:33 pm

1 stop6h 33m

Ontario

dom. 11/9

5:05 am-10:44 am

1 stop4h 39m

$415

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 17 results
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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 septiembre 11, 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 septiembre 11, 2025.
Read reviews from past customers who have flown Delta and American 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.
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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.

  • How long is the flight from Grand Junction to Ontario?

    American Airlines and United Airlines can get you from Grand Junction to Ontario in just under 5h 19m. Your travel time can differ by up to 1h 28m. The distance from Grand Junction to Ontario is about 612 mi. This flight may include one or multiple stops.

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

    Currently priced at $256, 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. Check Cheapflights for deals on American Airlines for as low as $288. Delta is currently priced 29% 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.

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Alternative routes for Grand Junction to Ontario

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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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$256Average$288FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$288Average$344FlexibilityNo cancel feeOn-time71%

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