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Ontario

$310+ 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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
GJT — ONT
Aug 27 — Sep 31
Thu 8/27
Thu 9/3
1 adult, Economy
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Cheap 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 28, 2026.

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.
Thu 8/2712:12 pm
GJT
-
ONT
1 stop4h 07m
American Airlines
Fri 9/412:59 pm
ONT
-
GJT
1 stop4h 27m
American Airlines
Deal found 7/27$319
This Delta deal was found by Cheapflights users on 7/26. 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.
Fri 8/146:53 pm
GJT
-
ONT
1 stop5h 41m
Delta
Sun 8/161:06 pm
ONT
-
GJT
1 stop4h 12m
Delta
Deal found 7/26$334
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/271:40 pm
GJT
-
ONT
2 stops10h 19m
United Airlines
Fri 9/45:00 am
ONT
-
GJT
1 stop6h 38m
United Airlines
Deal found 7/27$349
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.
Wed 8/125:30 am
GJT
-
ONT
2 stops7h 42m
United Airlines
Sun 8/161:18 pm
ONT
-
GJT
1 stop6h 17m
United Airlines
Deal found 7/28$354
This Delta deal was found by Cheapflights users on 7/26. 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.
Sun 11/221:11 pm
GJT
-
ONT
2 stops10h 49m
Delta
Tue 12/16:00 am
ONT
-
GJT
1 stop5h 20m
Delta
Deal found 7/26$369
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/66:53 pm
GJT
-
ONT
1 stop5h 41m
Delta
Wed 8/125:05 pm
ONT
-
GJT
1 stop3h 51m
Delta
Deal found 7/28$379
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:00 am
GJT
-
ONT
2 stops9h 16m
American Airlines
Tue 10/131:05 pm
ONT
-
GJT
1 stop4h 45m
American Airlines
Deal found 7/28$386
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:53 pm
GJT
-
ONT
1 stop5h 54m
Delta
Mon 9/215:15 pm
ONT
-
GJT
1 stop3h 42m
Delta
Deal found 7/28$388
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:00 am
GJT
-
ONT
1 stop6h 50m
United Airlines
Wed 9/25:00 am
ONT
-
GJT
1 stop4h 44m
United Airlines
Deal found 7/27$399
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:19 am
GJT
-
ONT
2 stops9h 42m
United Airlines
Sat 9/51:18 pm
ONT
-
GJT
1 stop6h 17m
United Airlines
Deal found 7/27$404
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:28 am
GJT
-
ONT
2 stops9h 43m
United Airlines
Sun 9/66:08 am
ONT
-
GJT
2 stops10h 18m
United Airlines
Deal found 7/27$409
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.
Thu 8/65:30 am
GJT
-
ONT
2 stops7h 42m
United Airlines
Wed 8/121:18 pm
ONT
-
GJT
1 stop6h 17m
United Airlines
Deal found 7/28$411

Find 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 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$319
(American Airlines)

One-way from

$310
(United Airlines)

Popular in

January

Cheapest in

February

Average price

$375
Provider with most accurate pricing for Grand Junction Regnl-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Grand Junction Regnl-Ontario flights.
Search Deals
From Grand Junction Regnl to Ontario
Search Deals
One-way flight from Grand Junction Regnl to Ontario
Search Deals
High demand for flights, 5% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 28, 2026.
Use the filters below to find and compare flights from Grand Junction to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Wed 8/26

11:19 am-8:01 pm

2 stops9h 42m

Ontario

Fri 9/4

5:00 am-12:38 pm

1 stop6h 38m

$354

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Sat 8/29

3:12 pm-8:53 pm

1 stop6h 41m

Ontario

Wed 9/2

1:18 pm-8:35 pm

1 stop6h 17m

$399

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Thu 9/3

3:12 pm-8:53 pm

1 stop6h 41m

Ontario

Mon 9/7

5:00 am-12:38 pm

1 stop6h 38m

$399

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Fri 9/4

7:00 am-12:50 pm

1 stop6h 50m

Ontario

Mon 9/14

5:00 am-12:38 pm

1 stop6h 38m

$399
Quickest round-trip

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Fri 8/28

3:12 pm-8:53 pm

1 stop6h 41m

Ontario

Mon 8/31

5:00 am-10:44 am

1 stop4h 44m

$399

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Sat 8/29

3:12 pm-8:53 pm

1 stop6h 41m

Ontario

Mon 8/31

5:00 am-12:38 pm

1 stop6h 38m

$399

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Sat 9/12

7:00 am-6:11 pm

2 stops12h 11m

Ontario

Fri 9/18

5:00 am-12:38 pm

1 stop6h 38m

$404
Cheapest one-way

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Mon 9/21

7:00 am-6:11 pm

2 stops12h 11m

$310

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Thu 9/24

5:30 am-12:18 pm

2 stops7h 48m

$310
Quickest one-way

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Thu 10/8

7:00 am-12:46 pm

1 stop6h 46m

$350

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/24

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

Compare providers for flights from Grand Junction to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Grand Junction to Ontario in July.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Grand Junction-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Grand Junction-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Grand Junction-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Grand Junction-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Grand Junction-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

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 28, 2026.
Read reviews from past customers who have flown 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.
American Airlines
7.1
Good
11,839 reviews

Food

6.4

Crew

7.9

Entertainment

6.8

Comfort

7.2

Overall

7.1

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes
American Airlines
7.1
Good
11,839 reviews
American Airlines
7.1
Good
11,839 reviews

Food

6.4

Crew

7.9

Entertainment

6.8

Comfort

7.2

Overall

7.1

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes

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?

    Delta and United Airlines can get you from Grand Junction to Ontario in just under 5h 41m. Your travel time can differ by up to 4h 01m. The distance from Grand Junction to Ontario is about 612 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Grand Junction to Ontario round-trip?

    Currently priced at $228, American Airlines will fly you from Grand Junction to Ontario and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. American Airlines is currently priced 34% 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.

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Top airline flying from Grand Junction to Ontario

Discover the top airline 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 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$228Average$378FlexibilityNo cancel feeOn-time71%

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