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$203+ Cheap flights from Grand Junction to Ontario (GJT - ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
GJT — ONT
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
1 adult, Economy
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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 October 27, 2025.

This Delta deal was found by Cheapflights users on 10/25. 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 11/121:15 pmGJT - ONT
1 stop3h 54mDelta
Sun 11/166:00 amONT - GJT
1 stop5h 39mDelta
Deal found 10/25$203
This American Airlines deal was found by Cheapflights users on 10/27. 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.
Mon 11/1012:10 pmGJT - ONT
1 stop4h 51mAmerican Airlines
Sun 11/166:11 amONT - GJT
1 stop4h 18mAmerican Airlines
Deal found 10/27$212
This American Airlines deal was found by Cheapflights users on 10/25. 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 11/152:09 pmGJT - ONT
1 stop5h 11mAmerican Airlines
Sat 11/226:11 amONT - GJT
1 stop4h 18mAmerican Airlines
Deal found 10/25$275
This United Airlines deal was found by Cheapflights users on 10/25. 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 11/125:30 amGJT - ONT
2 stops8h 07mUnited Airlines
Sun 11/165:05 amONT - GJT
1 stop4h 39mUnited Airlines
Deal found 10/25$284
This American Airlines deal was found by Cheapflights users on 10/25. 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 11/66:54 pmGJT - ONT
1 stop4h 05mAmerican Airlines
Sun 11/94:47 pmONT - GJT
1 stop4h 30mAmerican Airlines
Deal found 10/25$299
This Kiwi.com deal was found by Cheapflights users on 10/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/91:16 pmGJT - ONT
1 stop9h 49mMultiple Airlines
Thu 11/136:00 amONT - GJT
1 stop5h 36mMultiple Airlines
Deal found 10/25$328
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Sat 12/61:37 pmGJT - ONT
2 stops10h 12mUnited Airlines
Sun 12/75:05 amONT - GJT
1 stop6h 32mUnited Airlines
Deal found 10/27$334
This American Airlines deal was found by Cheapflights users on 10/25. 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 11/66:54 pmGJT - ONT
1 stop4h 05mAmerican Airlines
Sat 11/86:11 amONT - GJT
1 stop4h 18mAmerican Airlines
Deal found 10/25$370
This Kiwi.com deal was found by Cheapflights users on 10/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/61:16 pmGJT - ONT
2 stops11h 24mMultiple Airlines
Sun 11/96:00 amONT - GJT
1 stop5h 36mMultiple Airlines
Deal found 10/25$371
This United Airlines deal was found by Cheapflights users on 10/25. 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 12/253:12 pmGJT - ONT
1 stop6h 55mUnited Airlines
Tue 12/305:05 amONT - GJT
1 stop6h 33mUnited Airlines
Deal found 10/25$379

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 October 27, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$203
(Delta)

Popular in

October

Cheapest in

March

Average price

$555
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
Highest demand for flights based on searches. 16% potential increase in price ($71 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 October 27, 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

Mon 11/10

12:10 pm-4:01 pm

1 stop4h 51m

Ontario

Sun 11/16

6:11 am-11:29 am

1 stop4h 18m

$212

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Thu 11/6

6:54 pm-9:59 pm

1 stop4h 05m

Ontario

Sun 11/9

4:47 pm-10:17 pm

1 stop4h 30m

$299

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Sun 11/9

1:16 pm-10:05 pm

1 stop9h 49m

Ontario

Thu 11/13

6:00 am-12:36 pm

1 stop5h 36m

$328

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Fri 1/30

3:21 pm-8:58 pm

1 stop6h 37m

Ontario

Sat 2/7

5:05 am-12:40 pm

1 stop6h 35m

$329

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Fri 2/6

3:21 pm-8:58 pm

1 stop6h 37m

Ontario

Sat 2/14

5:00 am-10:51 am

1 stop4h 51m

$329

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Tue 4/14

7:43 am-12:33 pm

1 stop5h 50m

Ontario

Sat 4/18

5:00 am-10:55 am

1 stop4h 55m

$329

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Wed 12/10

3:15 pm-8:42 pm

1 stop6h 27m

$226

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Mon 11/10

7:00 am-12:33 pm

1 stop6h 33m

$281

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Thu 11/6

5:30 am-12:37 pm

2 stops8h 07m

$286

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Fri 11/21

3:21 pm-8:44 pm

1 stop6h 23m

$406

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 11 results
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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Grand Junction-Ontario flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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, November is the cheapest month in which you can book a flight from Grand Junction to Ontario (average of $66). Flying from Grand Junction to Ontario in May is currently the most expensive (average of $182). 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.

How much does it cost to fly round-trip from Grand Junction to Ontario?

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 October 27, 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
7.9
Good
7,997 reviews

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

7.9

Comfort

7.9

Boarding

8.2

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
7.9
Good
7,997 reviews
Delta
7.9
Good
7,997 reviews

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

7.9

Comfort

7.9

Boarding

8.2

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
11,030 reviews
Delta
7.9
Good
7,997 reviews

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

7.9

Comfort

7.9

Boarding

8.2

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 4h 51m. Your travel time can differ by up to 1h 46m. 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, November is the cheapest month in which you can book a flight from Grand Junction to Ontario (average of $66). Flying from Grand Junction to Ontario in May is currently the most expensive (average of $182). 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 October 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$256Average$288FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$288Average$344FlexibilityNo cancel feeOn-time71%

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