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Cheap flights from Ontario to Grand Junction from $243

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Grand Junction departing on 7/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Grand Junction

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
7:15 pm - 12:16 am
ONT
-
GJT
4h 01m
1 stop
American Airlines Logo
6:54 pm - 9:43 pm
GJT
-
ONT
3h 49m
1 stop
$319American Airlines
Thu, Jul 16 - Wed, Jul 22
United Airlines Logo
5:00 am - 10:44 am
ONT
-
GJT
4h 44m
1 stop
United Airlines Logo
5:30 am - 12:12 pm
GJT
-
ONT
7h 42m
2 stops
$324United Airlines
Wed, Aug 5 - Thu, Aug 13
American Airlines Logo
7:15 pm - 12:16 am
ONT
-
GJT
4h 01m
1 stop
American Airlines Logo
8:35 am - 12:02 pm
GJT
-
ONT
4h 27m
1 stop
$329American Airlines
Thu, Jul 30 - Mon, Aug 3
United Airlines Logo
5:00 am - 12:31 pm
ONT
-
GJT
6h 31m
1 stop
United Airlines Logo
7:00 am - 12:47 pm
GJT
-
ONT
6h 47m
1 stop
$349United Airlines
Tue, Jul 7 - Sat, Jul 11
American Airlines Logo
6:11 am - 12:33 pm
ONT
-
GJT
5h 22m
1 stop
American Airlines Logo
8:35 am - 12:02 pm
GJT
-
ONT
4h 27m
1 stop
$366American Airlines
Sat, Jul 4 - Wed, Jul 8
Delta Logo
1:00 pm - 6:17 pm
ONT
-
GJT
4h 17m
1 stop
Delta Logo
6:56 pm - 11:48 pm
GJT
-
ONT
5h 52m
1 stop
$369Delta
Fri, Jul 17 - Thu, Jul 23
American Airlines Logo
7:15 pm - 12:16 am
ONT
-
GJT
4h 01m
1 stop
American Airlines Logo
6:54 pm - 9:43 pm
GJT
-
ONT
3h 49m
1 stop
$382American Airlines
Thu, Jul 16 - Wed, Jul 22
United Airlines Logo
5:00 am - 10:55 am
ONT
-
GJT
4h 55m
1 stop
United Airlines Logo
3:16 pm - 8:56 pm
GJT
-
ONT
6h 40m
1 stop
$389United Airlines
Tue, Nov 10 - Sat, Nov 14
United Airlines Logo
5:00 am - 12:35 pm
ONT
-
GJT
6h 35m
1 stop
United Airlines Logo
1:40 pm - 10:53 pm
GJT
-
ONT
10h 13m
2 stops
$394United Airlines
Tue, Nov 10 - Sat, Nov 14
American Airlines Logo
1:11 pm - 10:51 pm
ONT
-
GJT
8h 40m
2 stops
American Airlines Logo
8:35 am - 12:02 pm
GJT
-
ONT
4h 27m
1 stop
$396American Airlines
Tue, Jul 7 - Sat, Jul 11

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United Airlines flights from Ontario to Grand Junction

Our best United Airlines deals on Ontario to Grand Junction flight tickets
United Airlines
Aug 5
ONT5:00 amOntario
4h 44m
1 stop
GJT10:44 amGrand Junction Regnl
Aug 13
GJT5:30 amGrand Junction Regnl
7h 42m
2 stops
ONT12:12 pmOntario
$324
United Airlines
Jul 7
ONT5:00 amOntario
6h 31m
1 stop
GJT12:31 pmGrand Junction Regnl
Jul 11
GJT7:00 amGrand Junction Regnl
6h 47m
1 stop
ONT12:47 pmOntario
$349
United Airlines
Nov 10
ONT5:00 amOntario
4h 55m
1 stop
GJT10:55 amGrand Junction Regnl
Nov 14
GJT3:16 pmGrand Junction Regnl
6h 40m
1 stop
ONT8:56 pmOntario
$389

American Airlines flights from Ontario to Grand Junction

Our best American Airlines deals on Ontario to Grand Junction flight tickets
American Airlines
Jul 16
ONT7:15 pmOntario
4h 01m
1 stop
GJT12:16 amGrand Junction Regnl
Jul 22
GJT6:54 pmGrand Junction Regnl
3h 49m
1 stop
ONT9:43 pmOntario
$319
American Airlines
Jul 30
ONT7:15 pmOntario
4h 01m
1 stop
GJT12:16 amGrand Junction Regnl
Aug 3
GJT8:35 amGrand Junction Regnl
4h 27m
1 stop
ONT12:02 pmOntario
$329
American Airlines
Jul 4
ONT6:11 amOntario
5h 22m
1 stop
GJT12:33 pmGrand Junction Regnl
Jul 8
GJT8:35 amGrand Junction Regnl
4h 27m
1 stop
ONT12:02 pmOntario
$366

momondo 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, momondo users made 832,500 searches. Data last updated June 23, 2026.
Use the filters below to find and compare flights from Ontario to Grand Junction that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Thu 7/16

7:15 pm-12:16 am

1 stop4h 01m

Grand Junction Regnl

Wed 7/22

6:54 pm-9:43 pm

1 stop3h 49m

$319

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Wed 8/5

5:00 am-10:44 am

1 stop4h 44m

Grand Junction Regnl

Thu 8/13

5:30 am-12:12 pm

2 stops7h 42m

$324

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Thu 7/30

7:15 pm-12:16 am

1 stop4h 01m

Grand Junction Regnl

Mon 8/3

8:35 am-12:02 pm

1 stop4h 27m

$329

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Tue 7/7

5:00 am-12:31 pm

1 stop6h 31m

Grand Junction Regnl

Sat 7/11

7:00 am-12:47 pm

1 stop6h 47m

$349

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Sat 7/4

6:11 am-12:33 pm

1 stop5h 22m

Grand Junction Regnl

Wed 7/8

8:35 am-12:02 pm

1 stop4h 27m

$366

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Fri 7/17

1:00 pm-6:17 pm

1 stop4h 17m

Grand Junction Regnl

Thu 7/23

6:56 pm-11:48 pm

1 stop5h 52m

$369

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Thu 7/16

7:15 pm-12:16 am

1 stop4h 01m

Grand Junction Regnl

Wed 7/22

6:54 pm-9:43 pm

1 stop3h 49m

$382

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Tue 11/10

5:00 am-10:55 am

1 stop4h 55m

Grand Junction Regnl

Sat 11/14

3:16 pm-8:56 pm

1 stop6h 40m

$389

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Tue 11/10

5:00 am-12:35 pm

1 stop6h 35m

Grand Junction Regnl

Sat 11/14

1:40 pm-10:53 pm

2 stops10h 13m

$394

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Tue 7/7

1:11 pm-10:51 pm

2 stops8h 40m

Grand Junction Regnl

Sat 7/11

8:35 am-12:02 pm

1 stop4h 27m

$396

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Grand Junction from

How to get the cheapest flight ticket from Ontario to Grand Junction

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Ontario and Grand Junction?

What is the cheapest month to fly to Grand Junction?

The cheapest month to fly to Grand Junction from Ontario is in December. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you aren’t able to travel to Grand Junction during the month of December, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $211.

When to book flights from Ontario to Grand Junction

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Grand Junction according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Grand Junction (ONT to GJT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Grand Junction

Fastest flight time

3h 37m

Direct flights

None
The fastest flight from Ontario to Grand Junction takes 3h 37m
There are no direct flights from Ontario to Grand Junction. There are no popular flight routes from Ontario to Grand Junction.
Search flight deals

Frequently asked questions about flying from Ontario to Grand Junction

  • How far is Ontario to Grand Junction Regnl by plane?

    Ontario and Grand Junction Regnl are 611.0 mi apart from one another. Flights usually cover this in 3h 37m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Ontario Airport to Grand Junction Regnl Airport?

    Prices for flights from Ontario Airport to Grand Junction Regnl Airport were last updated today.

  • How many operators does momondo search for flights from Ontario Airport to Grand Junction Regnl Airport?

  • How old do you have to be to fly from Ontario Airport to Grand Junction Regnl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Grand Junction Regnl Airport.

  • What documentation or ID do you need to fly to Grand Junction Regnl Airport?

    The necessary travel and health documents for your Grand Junction Regnl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Ontario to Grand Junction?

Best airlines flying from Ontario to Grand Junction

Compare and see reviews for airlines that fly from Ontario to Grand Junction with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $211Free CancellationRating
7.1
11,741 reviews
Search American Airlines flights

Traveling to a place near Grand Junction?

Book flights to Grand Junction if you plan to visit one of these locations
Parachute
Fruita
Palisade

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Grand Junction?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Grand Junction. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ontario to Grand Junction with flexible booking policies on momondo?

momondo does allow users to show only those flights to Grand Junction from Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ontario to Grand Junction?

Once all potential Ontario to Grand Junction flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Grand Junction right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ontario to Grand Junction now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Grand Junction and let you know when they change.

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