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$117+ Cheap flights from Grand Rapids to Ontario (GRR - ONT)

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 12/13. Fares are subject to change and may not be available on all flights or dates of travel.
GRR — ONT
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Cheapflights Tip: The best prices from Grand Rapids Gerald R. Ford Intl to Ontario are usually found in October or May, booked 41 days in advance, depart on a Saturday or Friday and return on a Wednesday

Cheap flight deals from Grand Rapids to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Grand Rapids (GRR) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$238
(CheapOair)

One-way from

$117
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$434
Provider with most accurate pricing for Grand Rapids Gerald R. Ford Intl-Ontario flight deals.
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Provider most trusted by Cheapflights users for Grand Rapids Gerald R. Ford Intl-Ontario flights.
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From Grand Rapids Gerald R. Ford Intl to Ontario
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One-way flight from Grand Rapids Gerald R. Ford Intl to Ontario
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Highest demand for flights based on searches. 7% potential increase in price ($37 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Grand Rapids to Ontario

Cheapest flights from Grand Rapids to Ontario
Explore the most affordable flight options available from Grand Rapids to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This CheapOair deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/254:44 pmGRR - ONT
1 stop10h 13mFrontier
Sun 11/3012:58 amONT - GRR
1 stop11h 51mFrontier
Deal found 11/11$238
This Kiwi.com deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:59 pmGRR - ONT
1 stop7h 16mMultiple Airlines
Fri 1/96:00 amONT - GRR
2 stops34h 18mMultiple Airlines
Deal found 11/12$251
This Kiwi.com deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/811:49 amGRR - ONT
2 stops26h 38mMultiple Airlines
Thu 12/116:15 amONT - GRR
1 stop13h 26mMultiple Airlines
Deal found 11/13$265
This Trip.com deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/19:49 pmGRR - ONT
1 stop26h 28mMultiple Airlines
Sun 12/76:15 amONT - GRR
1 stop13h 26mMultiple Airlines
Deal found 11/12$309
This Frontier deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/194:18 pmGRR - ONT
1 stop10h 41mFrontier
Fri 1/26:45 amONT - GRR
1 stop5h 38mFrontier
Deal found 11/12$332
This Frontier deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/228:16 pmGRR - ONT
1 stop6h 43mFrontier
Mon 12/296:45 amONT - GRR
1 stop9h 36mFrontier
Deal found 11/11$362
This Kiwi.com deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/14:44 pmGRR - ONT
1 stop10h 13mMultiple Airlines
Thu 12/46:15 amONT - GRR
1 stop13h 26mMultiple Airlines
Deal found 11/12$365
This Frontier deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/138:49 pmGRR - ONT
1 stop6h 01mFrontier
Sun 11/166:53 amONT - GRR
1 stop10h 00mFrontier
Deal found 11/10$367
This United Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/109:00 amGRR - ONT
1 stop6h 32mUnited Airlines
Sat 12/131:34 pmONT - GRR
1 stop5h 55mUnited Airlines
Deal found 11/10$377
This United Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/99:00 amGRR - ONT
2 stops11h 37mUnited Airlines
Sat 12/131:34 pmONT - GRR
1 stop5h 55mUnited Airlines
Deal found 11/10$382

Cheapflights Fare Finder

 
Customize your flight search to find flights from Grand Rapids to Ontario 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, Cheapflights users made 2,558,603 searches. Data last updated November 13, 2025.
Use the filters below to find and compare flights from Grand Rapids to Ontario that are best for you.

Fly from

Grand Rapids

Fly to

Ontario

Route

Depart

Return

Price

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Mon 12/8

11:49 am-11:27 am

2 stops26h 38m

Ontario

Thu 12/11

6:15 am-10:41 pm

1 stop13h 26m

$265

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Fri 12/19

4:18 pm-11:59 pm

1 stop10h 41m

Ontario

Fri 1/2

6:45 am-3:23 pm

1 stop5h 38m

$332

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Mon 12/1

4:44 pm-11:57 pm

1 stop10h 13m

Ontario

Thu 12/4

6:15 am-10:41 pm

1 stop13h 26m

$365

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Tue 12/9

9:00 am-5:37 pm

2 stops11h 37m

Ontario

Sat 12/13

1:34 pm-10:29 pm

1 stop5h 55m

$382

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Wed 12/10

3:25 pm-10:49 pm

2 stops10h 24m

Ontario

Sat 12/13

1:34 pm-10:29 pm

1 stop5h 55m

$382

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Tue 12/9

7:00 am-5:07 pm

2 stops13h 07m

Ontario

Sat 12/13

6:40 am-10:16 pm

2 stops12h 36m

$387

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Mon 12/8

1:59 pm-11:04 pm

2 stops12h 05m

Ontario

Thu 12/11

6:40 am-11:24 pm

2 stops13h 44m

$411

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Tue 11/25

4:44 pm-11:57 pm

1 stop10h 13m

Ontario

Sun 11/30

12:58 am-3:49 pm

1 stop11h 51m

$422

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Thu 12/18

5:55 pm-11:04 pm

1 stop8h 09m

Ontario

Fri 12/19

7:05 am-4:46 pm

1 stop6h 41m

$450

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Sat 1/10

9:00 am-12:47 pm

1 stop6h 47m

Ontario

Sat 1/24

5:05 am-2:23 pm

1 stop6h 18m

$467

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/13

Showing 1-10 of 20 results
1
2

Compare providers for flights from Grand Rapids to Ontario

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 Grand Rapids to Ontario in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

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

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

How far ahead should I book a flight from Grand Rapids to Ontario?

Use this chart to determine the optimal time to book a round-trip flight from Grand Rapids to Ontario. Price data was last updated on November 7, 2025.

The best time to book flights from Grand Rapids to Ontario is 41 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, May is the cheapest month in which you can book a flight from Grand Rapids to Ontario (average of $83). Flying from Grand Rapids to Ontario in March is currently the most expensive (average of $282). 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 GRR to ONT?

Find hourly flight availability from Grand Rapids to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 13, 2025.

When flying from Grand Rapids to Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 50% versus a flight at noon.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated November 13, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Grand Rapids to Ontario. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
7.9
Good
8,007 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
9,017 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
11,051 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,109 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

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

  • How long is the flight from Grand Rapids to Ontario?

    Frontier and United Airlines can get you from Grand Rapids to Ontario in just under 10h 41m. Your travel time can differ by up to 56m. The distance between Grand Rapids and Ontario is about 1824 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Flying on Frontier is currently your cheapest option to Ontario, with prices starting at $120. Additional round-trip tickets that might be worth considering are offered by Delta and Southwest, with the lowest prices starting at $283 and $324, respectively. These flights start at 75% lower than the current average price 3 months from now.

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

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

  • How can I find direct flights from Grand Rapids to Ontario?

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

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

    Yes. Cheapflights offers flight deals from Grand Rapids to Ontario 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 Grand Rapids to Ontario?

    Currently, May is the cheapest month in which you can book a flight from Grand Rapids to Ontario (average of $83). Flying from Grand Rapids to Ontario in March is currently the most expensive (average of $282). 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

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Top 5 airlines flying from Grand Rapids to Ontario

Discover the top 5 airlines that operate flights from Grand Rapids to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$120Average$224FlexibilityNo cancel feeOn-time62%
DeltaCheapest$283Average$426FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$324Average$454FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$334Average$451FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$363Average$490FlexibilityNo cancel feeOn-time69%

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