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

United Airlines, Delta, and Alaska 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 41% 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 October 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.

$211 Cheap Flights from Grand Junction to Ontario in 2025/26

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3:18 pm - 8:24 pmGJT-ONT

6h 06m1 stop

5:05 am - 10:44 amONT-GJT

4h 39m1 stop

$211United Airlines

Find Deal

Thu, Oct 23 - Sun, Oct 26

7:30 am - 12:51 pmGJT-ONT

6h 21m1 stop

1:40 pm - 9:58 pmONT-GJT

7h 18m2 stops

$216United Airlines

Find Deal

Fri, Oct 24 - Tue, Oct 28

1:35 pm - 10:52 pmGJT-ONT

10h 17m2 stops

5:05 am - 10:44 amONT-GJT

4h 39m1 stop

$255United Airlines

Find Deal

Thu, Oct 23 - Sun, Oct 26

1:05 pm - 4:19 pmGJT-ONT

4h 14m1 stop

6:00 am - 12:30 pmONT-GJT

5h 30m1 stop

$263Delta

Find Deal

Thu, Jan 15 - Sun, Jan 18

11:27 am - 5:23 pmGJT-ONT

6h 56m1 stop

5:05 am - 12:32 pmONT-GJT

6h 27m1 stop

$281United Airlines

Find Deal

Wed, Oct 22 - Sun, Oct 26

1:05 pm - 4:19 pmGJT-ONT

4h 14m1 stop

6:00 am - 12:30 pmONT-GJT

5h 30m1 stop

$283Delta

Find Deal

Thu, Jan 15 - Sun, Jan 18

1:35 pm - 5:23 pmGJT-ONT

4h 48m1 stop

9:36 am - 8:22 pmONT-GJT

9h 46m2 stops

$286United Airlines

Find Deal

Wed, Oct 22 - Sat, Oct 25

1:16 pm - 9:55 pmGJT-ONT

9h 39m1 stop

1:37 pm - 5:32 pmONT-GJT

26h 55m2 stops

$301Multiple Airlines

Find Deal

Thu, Oct 23 - Sat, Oct 25

6:54 pm - 10:01 pmGJT-ONT

4h 07m1 stop

4:49 pm - 10:20 pmONT-GJT

4h 31m1 stop

$316American Airlines

Find Deal

Thu, Jan 15 - Sun, Jan 18

12:37 pm - 10:01 pmGJT-ONT

10h 24m2 stops

9:59 am - 9:34 pmONT-GJT

10h 35m2 stops

$647American Airlines

Find Deal

Thu, Jan 15 - Sun, Jan 18

United Airlines flights from Grand Junction to Ontario

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

United Airlines

Oct 23

GJT3:18 pmGrand Junction Regnl

6h 06m

1 stop

ONT8:24 pmOntario

Oct 26

ONT5:05 amOntario

4h 39m

1 stop

GJT10:44 amGrand Junction Regnl

$211

Find similar

United Airlines

Oct 24

GJT7:30 amGrand Junction Regnl

6h 21m

1 stop

ONT12:51 pmOntario

Oct 28

ONT1:40 pmOntario

7h 18m

2 stops

GJT9:58 pmGrand Junction Regnl

$216

Find similar

United Airlines

Oct 23

GJT1:35 pmGrand Junction Regnl

10h 17m

2 stops

ONT10:52 pmOntario

Oct 26

ONT5:05 amOntario

4h 39m

1 stop

GJT10:44 amGrand Junction Regnl

$255

Find similar

Delta flights from Grand Junction to Ontario

Our best Delta deals on Grand Junction to Ontario flight tickets

Delta

Jan 15

GJT1:05 pmGrand Junction Regnl

4h 14m

1 stop

ONT4:19 pmOntario

Jan 18

ONT6:00 amOntario

5h 30m

1 stop

GJT12:30 pmGrand Junction Regnl

$263

Find similar

Delta

Jan 15

GJT1:05 pmGrand Junction Regnl

4h 14m

1 stop

ONT4:19 pmOntario

Jan 18

ONT6:00 amOntario

5h 30m

1 stop

GJT12:30 pmGrand Junction Regnl

$283

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Thu 10/23

3:18 pm-8:24 pm

1 stop6h 06m

Ontario

Sun 10/26

5:05 am-10:44 am

1 stop4h 39m

$211

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Fri 10/24

7:30 am-12:51 pm

1 stop6h 21m

Ontario

Tue 10/28

1:40 pm-9:58 pm

2 stops7h 18m

$216

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Thu 10/23

1:35 pm-10:52 pm

2 stops10h 17m

Ontario

Sun 10/26

5:05 am-10:44 am

1 stop4h 39m

$255

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Thu 1/15

1:05 pm-4:19 pm

1 stop4h 14m

Ontario

Sun 1/18

6:00 am-12:30 pm

1 stop5h 30m

$263

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Wed 10/22

11:27 am-5:23 pm

1 stop6h 56m

Ontario

Sun 10/26

5:05 am-12:32 pm

1 stop6h 27m

$281

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Thu 1/15

1:05 pm-4:19 pm

1 stop4h 14m

Ontario

Sun 1/18

6:00 am-12:30 pm

1 stop5h 30m

$283

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Wed 10/22

1:35 pm-5:23 pm

1 stop4h 48m

Ontario

Sat 10/25

9:36 am-8:22 pm

2 stops9h 46m

$286

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Thu 10/23

1:16 pm-9:55 pm

1 stop9h 39m

Ontario

Sat 10/25

1:37 pm-5:32 pm

2 stops26h 55m

$301

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Thu 1/15

6:54 pm-10:01 pm

1 stop4h 07m

Ontario

Sun 1/18

4:49 pm-10:20 pm

1 stop4h 31m

$316

Grand JunctionOntario

GJT - ONT

GJTONT

Grand Junction Regnl

Thu 1/15

12:37 pm-10:01 pm

2 stops10h 24m

Ontario

Sun 1/18

9:59 am-9:34 pm

2 stops10h 35m

$647

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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, March 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 $288. If you aren’t able to travel during the month of March, then book flights to Ontario from Grand Junction during June instead. Flights to Ontario in June, while not as cheap as those in March, 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.

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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 4h 07m.
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 October 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 81% of all bookings. The subsequent popular airline is Delta at 19%.

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 7,969 reviews		Search Delta flights
American Airlines	PriceFrom $288	Free Cancellation	Rating 7.2 11,043 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.