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$118+ 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 2/8. Fares are subject to change and may not be available on all flights or dates of travel.
GRR — ONT
Jan 29 — Feb 51
Thu 1/29
Thu 2/5
1 adult, Economy
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Cheap 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 December 30, 2025.

This United Airlines deal was found by Cheapflights users on 12/28. 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 12/304:40 pmGRR - ONT
1 stop8h 45mUnited Airlines
Sun 2/11:24 pmONT - GRR
1 stop6h 13mUnited Airlines
Deal found 12/28$795
This United Airlines deal was found by Cheapflights users on 12/27. 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 12/314:40 pmGRR - ONT
1 stop8h 45mUnited Airlines
Mon 1/121:24 pmONT - GRR
1 stop6h 13mUnited Airlines
Deal found 12/27$862
This United Airlines deal was found by Cheapflights users on 12/28. 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 12/314:40 pmGRR - ONT
1 stop8h 45mUnited Airlines
Mon 1/55:05 amONT - GRR
1 stop6h 27mUnited Airlines
Deal found 12/28$977
This United Airlines deal was found by Cheapflights users on 12/28. 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 12/314:40 pmGRR - ONT
1 stop8h 45mUnited Airlines
Fri 1/25:05 amONT - GRR
1 stop6h 27mUnited Airlines
Deal found 12/28$1,067
This Delta deal was found by Cheapflights users on 12/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:31 pmGRR - ONT
1 stop10h 19mDelta
Fri 1/26:00 amONT - GRR
2 stops8h 53mDelta
Deal found 12/28$1,112
This Alaska Airlines deal was found by Cheapflights users on 12/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:40 pmGRR - ONT
2 stops14h 34mAlaska Airlines
Mon 1/57:19 pmONT - GRR
2 stops13h 29mAlaska Airlines
Deal found 12/28$1,183
This United Airlines deal was found by Cheapflights users on 12/28. 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 12/316:30 pmGRR - ONT
1 stop6h 55mUnited Airlines
Sun 1/46:39 pmONT - GRR
2 stops14h 30mUnited Airlines
Deal found 12/28$1,288

Find 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 December 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$397
(United Airlines)

One-way from

$118
(Kiwi.com)

Popular in

August

Cheapest in

October

Average price

$553
Provider with most accurate pricing for Grand Rapids Gerald R. Ford Intl-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Grand Rapids Gerald R. Ford Intl-Ontario flights.
Search Deals
From Grand Rapids Gerald R. Ford Intl to Ontario
Search Deals
One-way flight from Grand Rapids Gerald R. Ford Intl to Ontario
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($72 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 30, 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

Sat 1/17

3:25 pm-8:58 pm

1 stop8h 33m

Ontario

Sun 1/18

5:05 am-2:23 pm

1 stop6h 18m

$397

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Sat 2/28

11:46 am-7:09 pm

2 stops10h 23m

Ontario

Sat 3/7

9:52 pm-9:55 am

1 stop9h 03m

$410

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Sat 2/28

12:50 pm-9:59 pm

2 stops12h 09m

Ontario

Sat 3/7

11:59 pm-11:09 am

1 stop7h 10m

$410

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Sat 1/17

3:25 pm-8:58 pm

1 stop8h 33m

Ontario

Wed 1/21

1:24 pm-10:37 pm

1 stop6h 13m

$432

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Tue 3/3

10:30 am-9:05 pm

2 stops13h 35m

Ontario

Mon 3/9

10:25 pm-1:41 pm

2 stops12h 16m

$433

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Sat 2/28

6:25 am-3:30 pm

2 stops12h 05m

Ontario

Sat 3/7

9:45 pm-10:50 am

2 stops10h 05m

$434

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Thu 4/16

1:38 pm-8:58 pm

1 stop10h 20m

Ontario

Sat 4/18

10:15 pm-11:18 am

2 stops10h 03m

$452

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Fri 5/1

2:02 pm-9:59 pm

2 stops10h 57m

Ontario

Sat 5/9

10:59 am-10:23 pm

1 stop8h 24m

$452

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Sat 1/24

9:10 am-12:47 pm

1 stop6h 37m

Ontario

Sat 1/31

5:05 am-2:23 pm

1 stop6h 18m

$467

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Wed 1/28

9:10 am-12:47 pm

1 stop6h 37m

Ontario

Tue 2/3

1:24 pm-10:37 pm

1 stop6h 13m

$467

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/28

Showing 1-10 of 17 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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust 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

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 $82). Flying from Grand Rapids to Ontario in March is currently the most expensive (average of $278). 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.

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 December 30, 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
4,251 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Entertainment

7.5

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
4,251 reviews
Southwest
8.0
Very good
4,251 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Entertainment

7.5

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
8,014 reviews
Southwest
8.0
Very good
4,251 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Entertainment

7.5

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
9,121 reviews
Southwest
8.0
Very good
4,251 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Entertainment

7.5

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
11,072 reviews
Southwest
8.0
Very good
4,251 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Entertainment

7.5

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
5.7
Fair
3,065 reviews
Southwest
8.0
Very good
4,251 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Entertainment

7.5

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?

    United Airlines can get you from Grand Rapids to Ontario in just under 8h 33m. Your travel time can differ by up to . The distance between Grand Rapids and Ontario is about 1824 mi.

  • 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 $117. 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.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $119. American Airlines flights start at $156 while deals on United Airlines start at $175 one-way.

  • 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 $82). Flying from Grand Rapids to Ontario in March is currently the most expensive (average of $278). 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 December 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$120Average$224FlexibilityNo cancel feeOn-time62%
DeltaCheapest$277Average$426FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$324Average$491FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$334Average$413FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$346Average$476FlexibilityNo cancel feeOn-time69%

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