What are the cheapest airlines flying from Ontario to Grand Junction round-trip?

American Airlines, at $289, was found to be the cheapest airline from Ontario to Grand Junction.Alternate airlines to your destination round-trip include United Airlines and Delta. Users have found that American Airlines is 27% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from Ontario to Grand Junction one-way?

The cheapest airlines for a one-way flight from Ontario to Grand Junction are Delta ($190), United Airlines ($225), and American Airlines ($236).

What is the cheapest day to fly from Ontario to Grand Junction?

Travelers seeking maximum savings on their Ontario to Grand Junction flight should consider departing on Tuesday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest day to fly round-trip from Ontario to Grand Junction?

Flying to your destination on a Sunday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Grand Junction. Check prices with Cheapflights to find a great deal for your trip.

How far in advance should I book a flight from Ontario to Grand Junction?

Travelers have found it’s best to book a flight 43 days in advance to save up to 27% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 43 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Ontario to Grand Junction 1-2 weeks in advance for as low as $111, or $143 for flights within the next 24 hours.

What is the cheapest month to fly from Ontario to Grand Junction?

Our data shows that June tends to be the cheapest month to fly to Grand Junction from Ontario. Users have commonly found prices around $356 for the month, but tickets can be as low as $87. Due to multiple factors, prepare for potentially higher prices in November.

Most accurate provider : When it comes to deals on Ontario-Grand Junction flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Grand Junction flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Grand Junction flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Ontario-Grand Junction flights, Cheapflights users trust eDreams the most. eDreams 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 Ontario-Grand Junction flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Ontario to Grand Junction that include hotel bookings?

Yes. In addition to deals on Ontario to Grand Junction flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ontario to Grand Junction?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Grand Junction.

Can I find deals for business class flights from Ontario to Grand Junction?

Yes. Cheapflights offers flight deals from Ontario to Grand Junction by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$190+ Flights from Ontario to Grand Junction - Compare & Save Big

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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”

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Cheap flight deals from Ontario to Grand Junction

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$289 (American Airlines)
One-way from	$190 (Delta)
Popular in	March
Cheapest in	June
Average price	$376

Provider with most accurate pricing for Ontario-Grand Junction Regnl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Ontario-Grand Junction Regnl flights.

Search Deals

From Ontario to Grand Junction Regnl

Search Deals

One-way flight from Ontario to Grand Junction Regnl

Search Deals

Highest demand for flights based on searches. 16% potential increase in price ($78 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 7% potential price decrease ($28 potential savings vs. average RT price).

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Average for round-trip flights in May 2025

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Find flight deals from Ontario to Grand Junction

Cheapest flights from Ontario to Grand Junction
Explore the most affordable flight options available from Ontario to Grand Junction. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Thu 5/294:57 pmONT - GJT

1 stop4h 36mDelta

Sun 6/15:56 amGJT - ONT

1 stop4h 15mDelta

Deal found 4/29

$289

Wed 9/31:42 pmONT - GJT

2 stops7h 28mUnited Airlines

Sat 9/61:45 pmGJT - ONT

2 stops7h 48mUnited Airlines

Deal found 4/29

$299

Thu 7/1012:59 amONT - GJT

1 stop7h 52mAmerican Airlines

Sun 7/134:31 pmGJT - ONT

1 stop7h 26mAmerican Airlines

Deal found 4/29

$415

Best flights from Ontario to Grand Junction
Discover carefully curated flight deals from Ontario to Grand Junction that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2025.

Thu 6/57:05 pmONT - GJT

1 stop4h 10mAmerican Airlines

Sun 6/154:33 pmGJT - ONT

1 stop8h 26mAmerican Airlines

Deal found 4/29

$289

Thu 5/295:10 amONT - GJT

1 stop6h 36mUnited Airlines

Thu 6/57:15 amGJT - ONT

1 stop6h 16mUnited Airlines

Deal found 4/30

$359

Mon 5/1211:44 amONT - GJT

2 stops9h 49mDelta

Thu 5/156:05 amGJT - ONT

2 stops9h 10mDelta

Deal found 4/30

$1,515

Last-minute flights from Ontario to Grand Junction
Discover last-minute flight deals from Ontario to Grand Junction. Data last updated May 1, 2025 and is based on user searches.

Tue 5/66:01 amONT - GJT

1 stop4h 06mAmerican Airlines

Sat 5/104:39 pmGJT - ONT

1 stop6h 19mAmerican Airlines

Deal found 4/30

$419

Sat 5/104:15 pmONT - GJT

1 stop4h 57mUnited Airlines

Sun 5/117:05 amGJT - ONT

1 stop6h 33mUnited Airlines

Deal found 4/28

$449

Thu 5/294:57 pmONT - GJT

1 stop4h 36mDelta

Sun 6/15:56 amGJT - ONT

1 stop4h 15mDelta

Deal found 4/29

$289

Fri 5/301:33 pmONT - GJT

1 stop5h 52mUnited Airlines

Mon 6/211:29 amGJT - ONT

1 stop6h 56mUnited Airlines

Deal found 4/29

$359

One-way flights from Ontario to Grand Junction
Search for one-way flight options from Ontario to Grand Junction. Find affordable one-way fares based on user searches. Data last updated May 1, 2025.

Sun 6/151:15 pmONT - GJT

1 stop4h 02mDelta

Deal found 4/29

$190

Wed 6/185:10 amONT - GJT

1 stop4h 44mUnited Airlines

Deal found 4/30

$225

Fri 7/2512:59 amONT - GJT

1 stop7h 52mAmerican Airlines

Deal found 4/29

$236

Fri 6/136:58 pmONT - GJT

2 stops22h 31mAlaska Airlines

Deal found 4/30

$373

Cheapflights Fare Finder

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

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Thu 5/29

4:57 pm-10:33 pm

1 stop4h 36m

Grand Junction Regnl

Sun 6/1

5:56 am-9:11 am

1 stop4h 15m

$289

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Wed 9/3

1:42 pm-10:10 pm

2 stops7h 28m

Grand Junction Regnl

Sat 9/6

1:45 pm-8:33 pm

2 stops7h 48m

$299

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Thu 7/10

12:59 am-9:51 am

1 stop7h 52m

Grand Junction Regnl

Sun 7/13

4:31 pm-10:57 pm

1 stop7h 26m

$415

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Sun 6/15

1:15 pm-6:17 pm

1 stop4h 02m

$190

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Wed 6/18

5:10 am-10:54 am

1 stop4h 44m

$225

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Fri 7/25

12:59 am-9:51 am

1 stop7h 52m

$236

OntarioGrand Junction

ONT - GJT

ONTGJT

Ontario

Fri 6/13

6:58 pm-6:29 pm

2 stops22h 31m

$373

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Compare providers for flights from Ontario to Grand Junction

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Grand Junction in May.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust 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 Ontario-Grand Junction flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Grand Junction flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Grand Junction flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Ontario-Grand Junction flights, Cheapflights users trust eDreams the most. eDreams 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 Ontario-Grand Junction 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 Ontario to Grand Junction

Have a flexible travel schedule? Discover the best time to fly to Grand Junction from Ontario 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 Ontario to Grand Junction

What is the cheapest month to book a flight from Ontario to Grand Junction?

Currently, January is the cheapest month in which you can book a flight from Ontario to Grand Junction (average of $421). Flying from Ontario to Grand Junction in May is currently the most expensive (average of $517). 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.

What is the cheapest time of day to fly from ONT to GJT?

When flying from Ontario to Grand Junction, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 10% versus a flight at noon.

Rainfall in Grand Junction by month

In terms of precipitation, rainfall in Grand Junction ranges from 0.5 - 1.2 inches per month. September is typically the wettest month, when rainfall can reach 1.2 in. February is typically the driest time to visit Grand Junction when rainfall is around 0.5 in.

Temperature in Grand Junction by month

If weather is an important factor for your trip to Grand Junction, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.6 F).

Reviews of airlines servicing Grand Junction

Get a feel of what it's like to fly with Alaska Airlines, Delta and United Airlines from Ontario to Grand Junction by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,972 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

8.0

Very good

9,972 reviews

Alaska Airlines

8.0

Very good

9,972 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Delta

8.0

Very good

7,934 reviews

Alaska Airlines

8.0

Very good

9,972 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

United Airlines

7.4

Good

8,696 reviews

Alaska Airlines

8.0

Very good

9,972 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,972 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

What are the cheapest airlines flying from Ontario to Grand Junction round-trip?
American Airlines, at $289, was found to be the cheapest airline from Ontario to Grand Junction.Alternate airlines to your destination round-trip include United Airlines and Delta. Users have found that American Airlines is 27% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from Ontario to Grand Junction one-way?
The cheapest airlines for a one-way flight from Ontario to Grand Junction are Delta ($190), United Airlines ($225), and American Airlines ($236).
Can I find deals for flights from Ontario to Grand Junction that include hotel bookings?
Yes. In addition to deals on Ontario to Grand Junction flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Grand Junction?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Grand Junction.
Can I find deals for business class flights from Ontario to Grand Junction?
Yes. Cheapflights offers flight deals from Ontario to Grand Junction 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 Ontario to Grand Junction?
Currently, January is the cheapest month in which you can book a flight from Ontario to Grand Junction (average of $421). Flying from Ontario to Grand Junction in May is currently the most expensive (average of $517). 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

Top airline flying from Ontario to Grand Junction

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$288	Average$402	FlexibilityNo cancel fee	On-time71%

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$190+ Cheap flights from Ontario to Grand Junction (ONT - GJT)

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 6/15. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Grand Junction with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Grand Junction

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Grand Junction

Cheapest flights from Ontario to Grand JunctionExplore the most affordable flight options available from Ontario to Grand Junction. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Explore the most affordable flight options available from Ontario to Grand Junction. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Grand Junction that are best for you.

Compare providers for flights from Ontario to Grand Junction

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 Ontario to Grand Junction in May.

Best time to book a flight from Ontario to Grand Junction

Have a flexible travel schedule? Discover the best time to fly to Grand Junction from Ontario with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Grand Junction

What is the cheapest month to book a flight from Ontario to Grand Junction?

What is the cheapest time of day to fly from ONT to GJT?

Find hourly flight availability from Ontario to Grand Junction. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

Rainfall in Grand Junction by month

Plan your trip to Grand Junction by taking into account the average rainfall totals by month.

Temperature in Grand Junction by month

Plan your trip to Grand Junction by taking into account the average temperature totals by month.

Reviews of airlines servicing Grand Junction

Related info for your journey

Find useful and relevant information for your journey from Ontario to Grand Junction. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Ontario to Grand Junction round-trip?

What are the cheapest airlines to fly from Ontario to Grand Junction one-way?

Can I find deals for flights from Ontario to Grand Junction that include hotel bookings?

How can I find direct flights from Ontario to Grand Junction?

Can I find deals for business class flights from Ontario to Grand Junction?

What is the cheapest month to book a flight from Ontario to Grand Junction?

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 Ontario to Grand Junction

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Ontario to Grand Junction

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Cheapest flights from Ontario to Grand Junction
Explore the most affordable flight options available from Ontario to Grand Junction. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.