What is the cheapest airline that flies from Grand Junction Regnl to Ontario?

Delta, American Airlines, and United Airlines are the most popular carriers operating from Grand Junction Regnl to Ontario

What airlines fly to Ontario?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Ontario from Grand Junction according to our data. United Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 5 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Grand Junction Regnl Airport to Ontario Airport refresh daily.

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

There are 2 operators available for flights from Grand Junction Regnl Airport to Ontario Airport as of November 2025.

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

What documentation or ID do you need to fly to Ontario Airport?

The necessary travel and health documents for your Ontario 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.

$191 Cheap Flights from Grand Junction to Ontario in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Grand Junction to Los Angeles

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:15 pm - 4:09 pmGJT-ONT

3h 54m1 stop

4:49 pm - 10:47 pmONT-GJT

4h 58m1 stop

$211Delta

Find Deal

Wed, Dec 10 - Wed, Dec 17

1:15 pm - 10:47 pmGJT-ONT

10h 32m2 stops

6:00 am - 12:40 pmONT-GJT

5h 40m1 stop

$216Delta

Find Deal

Wed, Dec 10 - Wed, Dec 17

3:15 pm - 8:42 pmGJT-ONT

6h 27m1 stop

5:05 am - 10:49 amONT-GJT

4h 44m1 stop

$235United Airlines

Find Deal

Thu, Dec 4 - Sun, Dec 7

1:37 pm - 10:49 pmGJT-ONT

10h 12m2 stops

5:05 am - 10:49 amONT-GJT

4h 44m1 stop

$240United Airlines

Find Deal

Thu, Dec 4 - Sun, Dec 7

5:21 am - 4:02 pmGJT-ONT

11h 41m2 stops

11:59 pm - 10:08 amONT-GJT

9h 09m1 stop

$280American Airlines

Find Deal

Thu, Dec 4 - Sun, Dec 7

3:21 pm - 8:58 pmGJT-ONT

6h 37m1 stop

5:00 am - 10:51 amONT-GJT

4h 51m1 stop

$281United Airlines

Find Deal

Fri, Feb 6 - Sat, Feb 14

3:21 pm - 8:58 pmGJT-ONT

6h 37m1 stop

1:24 pm - 8:18 pmONT-GJT

5h 54m1 stop

$336United Airlines

Find Deal

Fri, Jan 30 - Sat, Feb 7

11:56 am - 4:05 pmGJT-ONT

5h 09m1 stop

4:45 pm - 10:20 pmONT-GJT

4h 35m1 stop

$345American Airlines

Find Deal

Thu, Jan 15 - Sun, Jan 18

5:30 am - 12:17 pmGJT-ONT

7h 47m2 stops

6:41 pm - 9:23 amONT-GJT

13h 42m2 stops

$385United Airlines

Find Deal

Wed, Dec 10 - Wed, Dec 17

7:00 am - 12:38 pmGJT-ONT

6h 38m1 stop

5:05 am - 12:38 pmONT-GJT

6h 33m1 stop

$399United Airlines

Find Deal

Mon, Dec 22 - Wed, Dec 24

Delta flights from Grand Junction to Ontario

Our best Delta deals on Grand Junction to Ontario flight tickets

Delta

Dec 10

GJT1:15 pmGrand Junction Regnl

3h 54m

1 stop

ONT4:09 pmOntario

Dec 17

ONT4:49 pmOntario

4h 58m

1 stop

GJT10:47 pmGrand Junction Regnl

$211

Find similar

Delta

Dec 10

GJT1:15 pmGrand Junction Regnl

10h 32m

2 stops

ONT10:47 pmOntario

Dec 17

ONT6:00 amOntario

5h 40m

1 stop

GJT12:40 pmGrand Junction Regnl

$216

Find similar

United Airlines flights from Grand Junction to Ontario

Our best United Airlines deals on Grand Junction to Ontario flight tickets

United Airlines

Dec 4

GJT3:15 pmGrand Junction Regnl

6h 27m

1 stop

ONT8:42 pmOntario

Dec 7

ONT5:05 amOntario

4h 44m

1 stop

GJT10:49 amGrand Junction Regnl

$235

Find similar

United Airlines

Dec 4

GJT1:37 pmGrand Junction Regnl

10h 12m

2 stops

ONT10:49 pmOntario

Dec 7

ONT5:05 amOntario

6h 32m

1 stop

GJT12:37 pmGrand Junction Regnl

$240

Find similar

United Airlines

Dec 2

GJT7:15 amGrand Junction Regnl

6h 17m

1 stop

ONT12:32 pmOntario

Dec 8

ONT5:05 amOntario

4h 44m

1 stop

GJT10:49 amGrand Junction Regnl

$249

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Wed 12/10

1:15 pm-4:09 pm

1 stop3h 54m

Ontario

Wed 12/17

4:49 pm-10:47 pm

1 stop4h 58m

$211

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Wed 12/10

1:15 pm-10:47 pm

2 stops10h 32m

Ontario

Wed 12/17

6:00 am-12:40 pm

1 stop5h 40m

$216

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Thu 12/4

3:15 pm-8:42 pm

1 stop6h 27m

Ontario

Sun 12/7

5:05 am-10:49 am

1 stop4h 44m

$235

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Thu 12/4

1:37 pm-10:49 pm

2 stops10h 12m

Ontario

Sun 12/7

5:05 am-10:49 am

1 stop4h 44m

$240

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Thu 12/4

5:21 am-4:02 pm

2 stops11h 41m

Ontario

Sun 12/7

11:59 pm-10:08 am

1 stop9h 09m

$280

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

$281

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Fri 1/30

3:21 pm-8:58 pm

1 stop6h 37m

Ontario

Sat 2/7

1:24 pm-8:18 pm

1 stop5h 54m

$336

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Thu 1/15

11:56 am-4:05 pm

1 stop5h 09m

Ontario

Sun 1/18

4:45 pm-10:20 pm

1 stop4h 35m

$345

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Wed 12/10

5:30 am-12:17 pm

2 stops7h 47m

Ontario

Wed 12/17

6:41 pm-9:23 am

2 stops13h 42m

$385

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Mon 12/22

7:00 am-12:38 pm

1 stop6h 38m

Ontario

Wed 12/24

5:05 am-12:38 pm

1 stop6h 33m

$399

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Airlines

What is the cheapest month to fly to Ontario?

In general, November is the cheapest month to fly from Grand Junction to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $228. If you aren’t able to travel during the month of November, then book flights to Ontario from Grand Junction during March instead. Flights to Ontario in March, while not as cheap as those in November, still average around $288.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Wednesday when prices can be found for as low as $361. This is often the case because there is less demand to fly during this day of the week. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Grand Junction to Ontario for around $468.

What is the cheapest time of day to depart on your flight to Ontario?

In the morning is the cheapest time of day to fly from Grand Junction to Ontario when you can find flight prices for as low as $391. Flying to Ontario in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $418 on average. Flights to Ontario from Grand Junction in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Grand Junction to Ontario

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

Estimated round-trip price

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

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

Direct flights	None

There are no direct flights from Grand Junction to Ontario. There are no popular flight routes from Grand Junction to Ontario.

Search flight deals

How far is Grand Junction Regnl to Ontario by plane?
The distance between Grand Junction Regnl and Ontario is about 611.0 mi. By plane, this route typically takes 3h 54m.
When did momondo last update prices for flights from Grand Junction Regnl Airport to Ontario Airport?
Prices for flights from Grand Junction Regnl Airport to Ontario Airport refresh daily.
How many operators does momondo search for flights from Grand Junction Regnl Airport to Ontario Airport?
There are 2 operators available for flights from Grand Junction Regnl Airport to Ontario Airport as of November 2025.
How old do you have to be to fly from Grand Junction Regnl Airport to Ontario 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 Grand Junction Regnl Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The necessary travel and health documents for your Ontario 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 Grand Junction to Ontario?
momondo data reveals that the most frequently booked airline on the route from Grand Junction to Ontario is American Airlines, representing 79% of all bookings. The subsequent popular airline is Delta at 21%.

Best airlines flying from Grand Junction to Ontario

Compare and see reviews for airlines that fly from Grand Junction to Ontario with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $256	Free Cancellation	Rating 7.9 7,997 reviews		Search Delta flights
American Airlines	PriceFrom $288	Free Cancellation	Rating 7.2 11,046 reviews		Search American Airlines flights

Why use momondo?

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

It is quick and easy to find Grand Junction to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

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

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

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

momondo helps you find the best flight between Grand Junction and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Ontario from Grand Junction are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.