HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$101+ 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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
GJT — ONT
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Grand Junction to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 January 27, 2026.

This American Airlines deal was found by Cheapflights users on 1/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1011:56 am
GJT
-
ONT
1 stop5h 09m
American Airlines
Sat 2/1411:58 pm
ONT
-
GJT
1 stop9h 07m
American Airlines
Deal found 1/26$211
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Fri 3/2012:08 pm
GJT
-
ONT
1 stop5h 14m
American Airlines
Tue 3/2411:58 pm
ONT
-
GJT
1 stop9h 07m
American Airlines
Deal found 1/27$266
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1212:52 pm
GJT
-
ONT
1 stop20h 14m
Multiple Airlines
Mon 3/163:30 pm
ONT
-
GJT
1 stop19h 37m
Multiple Airlines
Deal found 1/27$270
This Delta deal was found by Cheapflights users on 1/25. 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.
Sat 3/147:45 am
GJT
-
ONT
1 stop5h 38m
Delta
Fri 3/205:09 pm
ONT
-
GJT
1 stop3h 44m
Delta
Deal found 1/25$275
This American Airlines deal was found by Cheapflights users on 1/25. 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.
Mon 3/96:53 pm
GJT
-
ONT
1 stop4h 14m
American Airlines
Tue 3/1711:58 pm
ONT
-
GJT
1 stop9h 07m
American Airlines
Deal found 1/25$281
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/197:57 pm
GJT
-
ONT
2 stops20h 40m
Multiple Airlines
Mon 3/2311:17 am
ONT
-
GJT
1 stop23h 50m
Multiple Airlines
Deal found 1/27$300
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1011:10 am
GJT
-
ONT
2 stops27h 42m
Multiple Airlines
Sat 2/148:09 pm
ONT
-
GJT
1 stop15h 24m
Multiple Airlines
Deal found 1/26$311
This American Airlines deal was found by Cheapflights users on 1/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:55 pm
GJT
-
ONT
1 stop4h 04m
American Airlines
Tue 4/286:15 am
ONT
-
GJT
1 stop4h 04m
American Airlines
Deal found 1/26$315
This United Airlines deal was found by Cheapflights users on 1/25. 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 8/51:20 pm
GJT
-
ONT
1 stop4h 58m
United Airlines
Wed 8/121:00 pm
ONT
-
GJT
1 stop6h 27m
United Airlines
Deal found 1/25$336
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Wed 3/117:00 am
GJT
-
ONT
1 stop5h 31m
American Airlines
Sat 3/1412:26 pm
ONT
-
GJT
1 stop4h 55m
American Airlines
Deal found 1/27$339

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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$211
(American Airlines)

One-way from

$101
(Kiwi.com)

Popular in

January

Cheapest in

November

Average price

$448
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
Highest demand for flights based on searches. 12% potential increase in price ($47 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 January 27, 2026.
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

Fri 3/20

12:08 pm-4:22 pm

1 stop5h 14m

Ontario

Tue 3/24

11:58 pm-10:05 am

1 stop9h 07m

$266

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Sat 3/14

7:45 am-12:23 pm

1 stop5h 38m

Ontario

Fri 3/20

5:09 pm-9:53 pm

1 stop3h 44m

$275

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Thu 3/19

12:52 pm-8:06 am

1 stop20h 14m

Ontario

Mon 3/23

3:30 pm-12:07 pm

1 stop19h 37m

$312

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Wed 3/11

7:00 am-11:31 am

1 stop5h 31m

Ontario

Sat 3/14

12:26 pm-6:21 pm

1 stop4h 55m

$339

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Sat 3/7

12:08 pm-4:22 pm

1 stop5h 14m

Ontario

Sat 3/14

12:26 pm-6:21 pm

1 stop4h 55m

$345

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Sun 3/8

4:46 pm-11:59 pm

1 stop8h 13m

Ontario

Tue 3/17

11:58 pm-10:05 am

1 stop9h 07m

$345

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Sat 3/7

12:08 pm-4:22 pm

1 stop5h 14m

Ontario

Fri 3/13

6:15 am-11:32 am

1 stop4h 17m

$345

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Thu 2/19

1:43 pm-8:50 pm

1 stop8h 07m

Ontario

Sun 2/22

5:00 am-12:47 pm

1 stop6h 47m

$386

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Sun 3/8

4:46 pm-10:30 pm

1 stop6h 44m

Ontario

Mon 3/16

12:22 pm-6:21 pm

1 stop4h 59m

$409

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Sun 3/8

7:05 am-12:48 pm

1 stop6h 43m

Ontario

Sun 3/15

5:15 am-12:38 pm

1 stop6h 23m

$429

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 20 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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 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.

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, July is the cheapest month in which you can book a flight from Grand Junction to Ontario (average of $83). Flying from Grand Junction to Ontario in May is currently the most expensive (average of $184). 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.

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 January 27, 2026.
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
8,118 reviews

Crew

8.5

Food

7.2

Entertainment

7.8

Overall

7.9

Boarding

8.1

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
7.9
Good
8,118 reviews
Delta
7.9
Good
8,118 reviews

Crew

8.5

Food

7.2

Entertainment

7.8

Overall

7.9

Boarding

8.1

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
11,197 reviews
Delta
7.9
Good
8,118 reviews

Crew

8.5

Food

7.2

Entertainment

7.8

Overall

7.9

Boarding

8.1

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 Delta can get you from Grand Junction to Ontario in just under 5h 14m. Your travel time can differ by up to 24m. 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 $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. Check Cheapflights for deals on Delta for as low as $256. American Airlines is currently priced 30% 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, July is the cheapest month in which you can book a flight from Grand Junction to Ontario (average of $83). Flying from Grand Junction to Ontario in May is currently the most expensive (average of $184). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Grand Junction to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Las Vegas flights
Denver to Los Angeles flights
Denver to San Francisco flights
Denver to Ontario flights
Denver to Santa Ana flights
Denver to San Diego flights
Denver to Palm Springs flights
Denver to San Jose flights
Denver to Sacramento flights
Denver to Burbank flights
Denver to Reno flights
Colorado Springs to Las Vegas flights
Denver to Santa Barbara flights
Denver to Monterey flights
Denver to Fresno flights
Denver to Oakland flights
Denver to Long Beach flights
Denver to San Luis Obispo flights
Colorado Springs to San Diego flights
Denver to Medford flights
Colorado Springs to Los Angeles flights
Grand Junction to Las Vegas flights
Colorado Springs to San Francisco flights
Colorado Springs to Ontario flights
Denver to Santa Rosa flights
Denver to Bakersfield flights
Denver to Arcata flights
Aspen to Los Angeles flights
Vail to Santa Ana flights
Vail to San Diego flights
Vail to Las Vegas flights
Montrose to Los Angeles flights
Grand Junction to Los Angeles flights
Vail to Los Angeles flights
Denver to Redding flights
Colorado Springs to San Jose flights
Grand Junction to Sacramento flights
Colorado Springs to Santa Ana flights
Montrose to San Diego flights
Grand Junction to San Diego flights
Grand Junction to Santa Ana flights
Grand Junction to San Francisco flights
Colorado Springs to Burbank flights
Vail to San Francisco flights
Colorado Springs to Oakland flights
Durango to Las Vegas flights
Aspen to Ontario flights
Colorado Springs to Palm Springs flights
Grand Junction to San Jose flights

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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$228Average$344FlexibilityNo cancel feeOn-time71%
DeltaCheapest$256Average$288FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.