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Grand Junction

$235+ Cheap flights from Ontario to Grand Junction (ONT - GJT)

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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — GJT
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Ontario to Grand Junction

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Grand Junction (GJT). 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 September 11, 2025.

Round-trip from

$320
(American Airlines)

One-way from

$275
(United Airlines)

Popular in

March

Cheapest in

August

Average price

$375
From Ontario to Grand Junction Regnl
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One-way flight from Ontario to Grand Junction Regnl
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Highest demand for flights based on searches. 13% potential increase in price ($60 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($28 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 Ontario to Grand Junction

Cheapest flights from Ontario to Grand Junction
Explore the most affordable flight options available from Ontario to Grand Junction. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

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.
Wed 11/125:05 amONT - GJT
1 stop4h 39mUnited Airlines
Sat 11/157:00 amGJT - ONT
1 stop6h 33mUnited Airlines
Deal found 9/9$249
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/176:00 amONT - GJT
1 stop5h 39mDelta
Tue 9/235:55 amGJT - ONT
1 stop4h 03mDelta
Deal found 9/9$299
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.
Sat 10/254:49 pmONT - GJT
1 stop3h 50mAmerican Airlines
Sat 11/15:00 amGJT - ONT
1 stop4h 56mAmerican Airlines
Deal found 9/10$320
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.
Wed 9/245:10 amONT - GJT
1 stop4h 40mUnited Airlines
Tue 9/3011:27 amGJT - ONT
1 stop4h 35mUnited Airlines
Deal found 9/11$369
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.
Fri 10/104:35 pmONT - GJT
1 stop4h 54mDelta
Mon 10/205:55 amGJT - ONT
1 stop4h 10mDelta
Deal found 9/10$370
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.
Wed 9/175:10 amONT - GJT
1 stop6h 26mUnited Airlines
Tue 9/237:20 amGJT - ONT
2 stops11h 17mUnited Airlines
Deal found 9/9$374
This United Airlines deal was found by Cheapflights users on 9/8. 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 10/255:05 amONT - GJT
1 stop6h 23mUnited Airlines
Tue 10/281:35 pmGJT - ONT
2 stops10h 16mUnited Airlines
Deal found 9/8$383
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.
Fri 10/105:05 amONT - GJT
1 stop4h 41mUnited Airlines
Mon 10/136:13 pmGJT - ONT
1 stop21h 49mUnited Airlines
Deal found 9/9$385

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Grand Junction 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 September 11, 2025.
Use the filters below to find and compare flights from Ontario to Grand Junction that are best for you.

Fly from

Ontario

Fly to

Grand Junction

Route

Depart

Return

Price

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Sat 3/7

5:40 am-10:55 am

1 stop4h 15m

Grand Junction Regnl

Tue 3/10

1:20 pm-10:45 pm

2 stops10h 25m

$324

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Fri 9/26

5:05 am-12:28 pm

1 stop6h 23m

Grand Junction Regnl

Tue 9/30

5:30 am-12:13 pm

2 stops7h 43m

$333

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Wed 11/12

5:05 am-12:32 pm

1 stop6h 27m

Grand Junction Regnl

Sat 11/15

3:21 pm-8:44 pm

1 stop6h 23m

$359

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Wed 9/24

5:10 am-10:50 am

1 stop4h 40m

Grand Junction Regnl

Tue 9/30

11:27 am-3:02 pm

1 stop4h 35m

$369

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Fri 10/10

4:35 pm-10:29 pm

1 stop4h 54m

Grand Junction Regnl

Mon 10/20

5:55 am-9:05 am

1 stop4h 10m

$370

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Thu 10/30

5:05 am-10:44 am

1 stop4h 39m

Grand Junction Regnl

Sun 11/2

7:00 am-8:44 pm

1 stop14h 44m

$401

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Thu 9/25

5:05 am-10:46 am

1 stop4h 41m

Grand Junction Regnl

Mon 9/29

7:30 am-12:51 pm

1 stop6h 21m

$403

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Wed 10/15

1:15 pm-8:22 pm

1 stop6h 07m

$235

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Sun 9/21

1:15 pm-8:16 pm

1 stop6h 01m

$306

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Fri 10/10

5:05 am-4:52 pm

1 stop10h 47m

$331

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 12 results
1
2

Best time to book a flight from Ontario to Grand Junction

Have a flexible travel schedule? Discover the best time to fly to Grand Junction from Ontario 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 Ontario to Grand Junction

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

Currently, August is the cheapest month in which you can book a flight from Ontario to Grand Junction (average of $404). Flying from Ontario to Grand Junction in March is currently the most expensive (average of $509). 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 ONT to GJT?

Find hourly flight availability from Ontario to Grand Junction. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

When flying from Ontario to Grand Junction, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 10% versus a flight at noon.

Reviews of airlines servicing Grand Junction

Get insights into the airlines that provide service to Grand Junction. 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 Grand Junction. Reviews last updated September 11, 2025.
Peruse reviews from past customers who have flown with Delta and American Airlines from Ontario to Grand Junction to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

Related info for your journey

Find useful and relevant information for your journey from Ontario to Grand Junction. 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 Ontario to Grand Junction?

    A quick flight from Ontario to Grand Junction can take about 4h 15m. United Airlines provides one of the quickest options available for as low as $324. Ontario and Grand Junction are separated by a distance of 612 mi.

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

    Delta, at $219, was found to be the cheapest airline from Ontario to Grand Junction. An alternate airline flying to your destination would be American Airlines. Users have found that Delta is 45% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Grand Junction 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 Ontario to Grand Junction?

    Currently, August is the cheapest month in which you can book a flight from Ontario to Grand Junction (average of $404). Flying from Ontario to Grand Junction in March is currently the most expensive (average of $509). 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

Traveling to a place near Grand Junction?

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Top 2 airlines flying from Ontario to Grand Junction

Discover the top 2 airlines that operate flights from Ontario to Grand Junction. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$219Average$288FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$278Average$399FlexibilityNo cancel feeOn-time71%

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