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Cheap flights from Ontario to Grand Junction from $274

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 10/11. 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
4:29 pm - 9:31 pmONT  Ontario-GJT Grand Junction Regnl
4h 02m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
6:00 am - 9:04 amGJT  Grand Junction Regnl-ONT Ontario
4h 04m1 stop Phoenix Sky Harbor Intl
$319American Airlines
Wed, Oct 21 - Sat, Oct 24
Delta Logo
5:15 pm - 9:57 pmONT  Ontario-GJT Grand Junction Regnl
3h 42m1 stop Salt Lake City
Delta Logo
6:53 pm - 11:47 pmGJT  Grand Junction Regnl-ONT Ontario
5h 54m1 stop Salt Lake City
$319Delta
Thu, Sep 24 - Sun, Sep 27
Delta Logo
1:04 pm - 6:18 pmONT  Ontario-GJT Grand Junction Regnl
4h 14m1 stop Salt Lake City
Delta Logo
7:41 am - 12:14 pmGJT  Grand Junction Regnl-ONT Ontario
5h 33m1 stop Salt Lake City
$319Delta
Fri, Sep 18 - Sat, Sep 19
Delta Logo
5:15 pm - 9:57 pmONT  Ontario-GJT Grand Junction Regnl
3h 42m1 stop Salt Lake City
Delta Logo
6:53 pm - 11:47 pmGJT  Grand Junction Regnl-ONT Ontario
5h 54m1 stop Salt Lake City
$319Delta
Thu, Sep 24 - Sun, Sep 27
Delta Logo
1:04 pm - 6:18 pmONT  Ontario-GJT Grand Junction Regnl
4h 14m1 stop Salt Lake City
Delta Logo
6:53 pm - 11:47 pmGJT  Grand Junction Regnl-ONT Ontario
5h 54m1 stop Salt Lake City
$319Delta
Fri, Sep 25 - Sun, Sep 27
Delta Logo
5:15 pm - 9:57 pmONT  Ontario-GJT Grand Junction Regnl
3h 42m1 stop Salt Lake City
Delta Logo
6:53 pm - 11:47 pmGJT  Grand Junction Regnl-ONT Ontario
5h 54m1 stop Salt Lake City
$319Delta
Fri, Sep 25 - Sun, Sep 27
United Airlines Logo
1:18 pm - 8:35 pmONT  Ontario-GJT Grand Junction Regnl
6h 17m1 stop Denver Intl
United Airlines Logo
3:12 pm - 8:53 pmGJT  Grand Junction Regnl-ONT Ontario
6h 41m1 stop Denver Intl
$334United Airlines
Sun, Aug 23 - Sat, Aug 29
United Airlines Logo
5:00 am - 10:44 amONT  Ontario-GJT Grand Junction Regnl
4h 44m1 stop Denver Intl
United Airlines Logo
11:15 am - 8:01 pmGJT  Grand Junction Regnl-ONT Ontario
9h 46m2 stops Denver Intl San Francisco
$339United Airlines
Sun, Aug 23 - Sat, Aug 29
United Airlines Logo
5:00 am - 10:44 amONT  Ontario-GJT Grand Junction Regnl
4h 44m1 stop Denver Intl
United Airlines Logo
1:34 pm - 10:51 pmGJT  Grand Junction Regnl-ONT Ontario
10h 17m2 stops Denver Intl San Francisco
$349United Airlines
Wed, Oct 21 - Sat, Oct 24
American Airlines Logo
7:49 pm - 12:30 amONT  Ontario-GJT Grand Junction Regnl
3h 41m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
11:58 am - 3:35 pmGJT  Grand Junction Regnl-ONT Ontario
4h 37m1 stop Phoenix Sky Harbor Intl
$352American Airlines
Thu, Nov 12 - Sun, Nov 15

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American Airlines flights from Ontario to Grand Junction

Our best American Airlines deals on Ontario to Grand Junction flight tickets
American Airlines
Nov 12
ONT7:49 pmOntario
3h 41m
1 stop
GJT12:30 amGrand Junction Regnl
Nov 15
GJT11:58 amGrand Junction Regnl
4h 37m
1 stop
ONT3:35 pmOntario
$352
American Airlines
Aug 12
ONT6:15 amOntario
4h 22m
1 stop
GJT11:37 amGrand Junction Regnl
Aug 15
GJT8:30 amGrand Junction Regnl
4h 33m
1 stop
ONT12:03 pmOntario
$393
American Airlines
Aug 12
ONT6:15 amOntario
4h 22m
1 stop
GJT11:37 amGrand Junction Regnl
Aug 15
GJT7:00 amGrand Junction Regnl
12h 15m
2 stops
ONT6:15 pmOntario
$423

Delta flights from Ontario to Grand Junction

Our best Delta deals on Ontario to Grand Junction flight tickets
Delta
Sep 24
ONT5:15 pmOntario
3h 42m
1 stop
GJT9:57 pmGrand Junction Regnl
Sep 27
GJT6:53 pmGrand Junction Regnl
5h 54m
1 stop
ONT11:47 pmOntario
$319
Delta
Aug 27
ONT5:05 pmOntario
3h 51m
1 stop
GJT9:56 pmGrand Junction Regnl
Aug 30
GJT7:41 amGrand Junction Regnl
5h 35m
1 stop
ONT12:16 pmOntario
$364
Delta
Aug 12
ONT6:20 amOntario
10h 58m
2 stops
GJT6:18 pmGrand Junction Regnl
Aug 15
GJT7:41 amGrand Junction Regnl
5h 35m
1 stop
ONT12:16 pmOntario
$398

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 August 7, 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 Ontario - GJT Grand Junction Regnl

ONTGJT

Ontario

Wed 10/21

4:29 pm-9:31 pm

1 stop4h 02m

Grand Junction Regnl

Sat 10/24

6:00 am-9:04 am

1 stop4h 04m

$319

OntarioGrand Junction

ONT Ontario - GJT Grand Junction Regnl

ONTGJT

Ontario

Thu 9/24

5:15 pm-9:57 pm

1 stop3h 42m

Grand Junction Regnl

Sun 9/27

6:53 pm-11:47 pm

1 stop5h 54m

$319

OntarioGrand Junction

ONT Ontario - GJT Grand Junction Regnl

ONTGJT

Ontario

Fri 9/18

1:04 pm-6:18 pm

1 stop4h 14m

Grand Junction Regnl

Sat 9/19

7:41 am-12:14 pm

1 stop5h 33m

$319

OntarioGrand Junction

ONT Ontario - GJT Grand Junction Regnl

ONTGJT

Ontario

Thu 9/24

5:15 pm-9:57 pm

1 stop3h 42m

Grand Junction Regnl

Sun 9/27

6:53 pm-11:47 pm

1 stop5h 54m

$319

OntarioGrand Junction

ONT Ontario - GJT Grand Junction Regnl

ONTGJT

Ontario

Fri 9/25

1:04 pm-6:18 pm

1 stop4h 14m

Grand Junction Regnl

Sun 9/27

6:53 pm-11:47 pm

1 stop5h 54m

$319

OntarioGrand Junction

ONT Ontario - GJT Grand Junction Regnl

ONTGJT

Ontario

Fri 9/25

5:15 pm-9:57 pm

1 stop3h 42m

Grand Junction Regnl

Sun 9/27

6:53 pm-11:47 pm

1 stop5h 54m

$319

OntarioGrand Junction

ONT Ontario - GJT Grand Junction Regnl

ONTGJT

Ontario

Sun 8/23

1:18 pm-8:35 pm

1 stop6h 17m

Grand Junction Regnl

Sat 8/29

3:12 pm-8:53 pm

1 stop6h 41m

$334

OntarioGrand Junction

ONT Ontario - GJT Grand Junction Regnl

ONTGJT

Ontario

Sun 8/23

5:00 am-10:44 am

1 stop4h 44m

Grand Junction Regnl

Sat 8/29

11:15 am-8:01 pm

2 stops9h 46m

$339

OntarioGrand Junction

ONT Ontario - GJT Grand Junction Regnl

ONTGJT

Ontario

Wed 10/21

5:00 am-10:44 am

1 stop4h 44m

Grand Junction Regnl

Sat 10/24

1:34 pm-10:51 pm

2 stops10h 17m

$349

OntarioGrand Junction

ONT Ontario - GJT Grand Junction Regnl

ONTGJT

Ontario

Thu 11/12

7:49 pm-12:30 am

1 stop3h 41m

Grand Junction Regnl

Sun 11/15

11:58 am-3:35 pm

1 stop4h 37m

$352

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 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

4h 14m

Direct flights

None
The fastest flight from Ontario to Grand Junction takes 4h 14m
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 4h 14m, 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
11,877 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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