GRR - ONT

$105 Find Cheap Flights from Grand Rapids to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Grand Rapids to Ontario departing on 4/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Grand Rapids to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Grand Rapids to Ontario, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$195
Overall average: $490
Frontier
Wed 4/1Wed 4/8
GRR - ONT • 1 stop
Cheapest one-way
$105
Typical prices: $278-$335
Frontier
Wed 4/1
GRR - ONT • 1 stop
Top airlines
Delta
Cheapest • from $368 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
October
Cheapest • 27% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Grand Rapids to Ontario (GRR-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Grand Rapids to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Grand Rapids to Ontario

Wed, Apr 1 - Wed, Apr 8
Frontier Logo
8:52 pm - 11:56 pm
GRR
-
ONT
6h 04m
1 stop
Frontier Logo
6:20 am - 8:07 pm
ONT
-
GRR
10h 47m
1 stop
$195Frontier
Tue, Feb 17 - Wed, Feb 25
Multiple Airlines Logo
7:47 pm - 9:34 am
GRR
-
ONT
40h 47m
2 stops
Multiple Airlines Logo
7:17 pm - 10:24 pm
ONT
-
GRR
24h 07m
1 stop
$346Multiple Airlines
Tue, Feb 17 - Wed, Feb 25
United Airlines Logo
3:25 pm - 8:50 pm
GRR
-
ONT
8h 25m
1 stop
United Airlines Logo
5:00 am - 2:23 pm
ONT
-
GRR
6h 23m
1 stop
$357United Airlines
Tue, Feb 17 - Wed, Feb 25
Multiple Airlines Logo
7:47 pm - 2:29 pm
GRR
-
ONT
45h 42m
2 stops
Multiple Airlines Logo
7:17 pm - 10:24 pm
ONT
-
GRR
24h 07m
1 stop
$359Multiple Airlines
Sat, May 16 - Tue, May 19
American Airlines Logo
2:02 pm - 7:32 pm
GRR
-
ONT
8h 30m
2 stops
American Airlines Logo
10:26 pm - 10:51 am
ONT
-
GRR
9h 25m
1 stop
$362American Airlines
Wed, Feb 18 - Tue, Feb 24
American Airlines Logo
1:11 pm - 7:45 pm
GRR
-
ONT
9h 34m
1 stop
American Airlines Logo
12:18 pm - 10:34 pm
ONT
-
GRR
7h 16m
1 stop
$363American Airlines
Sat, Feb 28 - Sat, Mar 7
American Airlines Logo
11:46 am - 7:09 pm
GRR
-
ONT
10h 23m
2 stops
American Airlines Logo
9:52 pm - 9:55 am
ONT
-
GRR
9h 03m
1 stop
$364American Airlines
Sat, Feb 28 - Sat, Mar 7
American Airlines Logo
2:19 pm - 6:42 pm
GRR
-
ONT
7h 23m
1 stop
American Airlines Logo
9:52 pm - 9:55 am
ONT
-
GRR
9h 03m
1 stop
$365American Airlines
Tue, Feb 17 - Wed, Feb 25
Delta Logo
3:59 pm - 11:49 pm
GRR
-
ONT
10h 50m
2 stops
Delta Logo
7:30 am - 11:55 pm
ONT
-
GRR
13h 25m
2 stops
$368Delta
Sat, May 16 - Tue, May 19
American Airlines Logo
2:02 pm - 7:32 pm
GRR
-
ONT
8h 30m
2 stops
American Airlines Logo
9:24 am - 12:17 am
ONT
-
GRR
11h 53m
2 stops
$369American Airlines
Booking Insights

KAYAK's insights & trends for Grand Rapids to Ontario flights

Get data-powered insights and trends into flights from Grand Rapids to Ontario to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Grand Rapids to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Grand Rapids to Ontario is October, where tickets cost $346 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is $632 and $580 respectively.

Good to know

Low seasonFebruary
Cheapest flight$105
Most popular time to fly and prices are also 14% lower on average.
Flight from Grand Rapids to Ontario

When to book flights from Grand Rapids to Ontario

Are your dates flexible? Find out the best times to travel from Grand Rapids to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Grand Rapids to Ontario

  • What is the cheapest flight from Grand Rapids to Ontario?

    In the last 3 days, the lowest price for a flight from Grand Rapids to Ontario was $105 for a one-way ticket and $195 for a round-trip.

  • Do I need a passport to fly between Grand Rapids and Ontario?

    No

  • Which airports will I be using when flying from Grand Rapids to Ontario?

    On your way to Ontario, you’ll fly out from Grand Rapids Gerald R. Ford Intl. You’ll be landing at Ontario.

  • Which aircraft models fly most regularly from Grand Rapids to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Grand Rapids to Ontario?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Grand Rapids and Ontario, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Grand Rapids to Ontario, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Grand Rapids to Ontario are Southwest and Delta. With an average price for the route of $526 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $426 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Grand Rapids to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Grand Rapids to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Grand Rapids to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Grand Rapids is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Grand Rapids to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Grand Rapids with another airline. Booking your flights between Grand Rapids and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Grand Rapids to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Grand Rapids up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Grand Rapids to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Grand Rapids to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Grand Rapids to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4261 reviews
8.1Boarding
8.6Crew
7.5Entertainment
8.0Comfort
7.0Food
Airline reviews

3 hour delay. Had to change plans and was still delayed.

2.0 MediocreAnonymous, Jan 2026
SFO - SAN
Read more Southwest reviews

3 hour delay. Had to change plans and was still delayed.

The flight crew was extremely rude and especially not helpful when our flight was delayed.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Connecting flight is on time and boarding was a breeze!

Very smooth checking in our luggage with a super pleasant SW agent. I enjoyed a fun entertaining movie.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

Food was surprisingly good but the WiFi was not great

My flight was extremely cold. I had a jacket and a cover was left in each seat. The cover was extremely thin and I have a disability, fibromyalgia and arthrithis and AC air is the worst. I closed my vent and my husbands vent and it still was frigid. I asked the attendant if I could get another cover and she quickly almost dismissively and totally unconcerned stating, (I quote) (one per chair) and walked off so quickly that I didn't get a chance to explain to her that I literally have adisability. I didnt want to make a seen so I set on that flight for over 5 hours in pain, joints locking up and extremely uncomfortable. When my fibromyalgia flares up my joints not only ache but they will lock up also and it takes me days to get back to my regular self even though I take medication for it. I felt like it would not have hurt anyone at all for her to just give me an extra cover because I'm sure they have all types of medical issues in people that fly every day.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

Flight was late - I was downgraded from first class to coach

Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

The internet service I paid for didn’t work at all and the flight crew was not very friendly.

Amazing I love American. I’ll never fly anyone else if I can help it.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

They should have allowed for extra time to de-ice the plane before boarding passengers. This delayed us about 10-15 mins after we boarded. Overall experience was fine. Crew was friendly and on top of everything. We didn’t have any issues during the flight.

After the door had been closed, the cockpit makes an announcement that catering is running late and it is not the airline's fault. It is their fault in the sense that we had to sit for 2 hours or more when we could have stayed in the terminal. Poor communications between catering and airline. This caused a young man to lose his temper and he went storming out hitting objects. He had complained to the gate agent that he had already waited at the gate 7 hours and when can the airplane leave? Airilnes do a poor job of explaining delays, maintenance issues, etc. whereas being truthful may gain more sympathy or understanding.

We were told the flight was delayed 5 times, then it was moved to the next day.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

Loved the crew . Absolutely no complaints. Except for luggage lost

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

We are too tired and frustrated to comment politely at this point

The flight crew was rude. We were in first class and no one even offered water until an hour after we were in the air. Horrible experience

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

Plane and crew on board were fine. Everything else was terrible.

The third party booking with cheapflightsfares was awful. Kayak should NOT partner with them. They sold me a bundle including seat selection and carry-on, but did not book the carry-ons with Frontier, so I’m out of pocket for $414 more while I await resolution.

This company socks. It's fraud. They canceled our flight yesterday, and today we were late because of a really long line at the check in bag. At the rebook station, there was ton of people. The workers were all rude. I am gonna make a report to FTC.

One of the worst travel experiences I've had. Had a flight scheduled with CVG to RSW on VLSWQX this morning departing at 5:30. Two individuals at the gate and one was in training. Not her fault but she didn't have the ability to check people in resulting in at least 15 families that didn't make it on the plane because they weren't checked into the system in time. When arriving at the airport to drop off our prepaid checked bags, the bag drop off agent asked if we could check our bags at the gate because of the long line. We said no problem so arrived at the gate by 5:00. They told those people that had previously paid for checked bags to stand off to the side while they let others that either didn't have a checked bag or their bag was already on the plan through. Realizing the gate workers had an issue, they either called for help or this lady showed up late for work as she didn't arrive until 5:15. The worker who had been there training the other individual and working diligently to make sure all passengers got on board. He even said that at one point all people that are currently in line are fine but asked the person in training to stand outside the ticketing area around 5:15 to notify any late travels that the flight was in boarding process and they arrrived too late. At that point, we're sill standing off to the side with our pre-paid checked bags patiently waiting. When the new lady arrived she couldn't have been more rude. It was an awful seen. Essentially they had asked for those without an assigned seat to board last, those with pre-paid checked bag stand off to the site and any traveling with a larger items that needed to be checked at the gate (such as a stroller), wait on the side. They realized that the flight needed to leave on time so the gate attendant shut the gate. So anyone without a seat assignment, those that had pre-checked bags, and the worst one I saw was a mother with two infant children was in line with use because she was asked to stand to the side because her stroller. When they shut the door to the plan they told her she could no longer get on. Her checked bags were already on the plane with her car keys in them, and the lady told her we couldn't accept anyone else on because the door was shut. She didn't even have a way to get home from the airport. Truely evil behavior. I've flown Frontier enough to know customer service is not a top priority in the company's mission, but this was an all-time low. I'm sending this after an 18 hour drive that our family just completed to Bonita Springs . I felt really bad for the lady being trained and the other individual trying to help, but when the new lady came to the gate she was truly one of the rudest individuals I've ever met. One lady had been there since 4am but because she didn't have an assigned seat they wouldn't let her on the plan.

I loved the staff on the plane. So friendly and helpful! However, there was an argument and misunderstanding by the staff and a customer at the gate, and the staff member was being unprofessional. When we arrived in Atlanta, we waited 1.5 hrs for our luggage to arrive. When I asked the airport attendant, they said Frontier had the longest wait for luggage out of any airlines, and that they could not be held responsible for the delay.

Everything you need to know for your flight from Grand Rapids to Ontario

Information on your arrival and departure airports