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$303+ Cheap flights from Grand Island to Ontario (GRI - 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
GRI — ONT
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheap flight deals from Grand Island to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Grand Island (GRI) 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 July 30, 2025.

Popular in

June

Cheapest in

January
Highest demand for flights based on searches. 22% potential increase in price ($151 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($37 potential savings vs. average RT price).
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Find flight deals from Grand Island to Ontario

One-way flights from Grand Island to Ontario
Search for one-way flight options from Grand Island to Ontario. Find affordable one-way fares based on user searches. Data last updated July 30, 2025.

This American Airlines deal was found by Cheapflights users on 7/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/223:04 pmGRI - ONT
1 stop24h 50mAmerican Airlines
Deal found 7/28$303

Cheapflights Fare Finder

 
Customize your flight search to find flights from Grand Island 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 July 30, 2025.
Use the filters below to find and compare flights from Grand Island to Ontario that are best for you.

Fly from

Grand Island

Fly to

Ontario

Route

Depart

Return

Price

Grand IslandOntario

GRI - ONT

GRIONT

Grand Island

Mon 9/22

3:04 pm-1:54 pm

1 stop24h 50m

$303

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from Grand Island to Ontario

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

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

Currently, August is the cheapest month in which you can book a flight from Grand Island to Ontario (average of $246). Flying from Grand Island to Ontario in March is currently the most expensive (average of $328). 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 July 30, 2025.
Read through reviews of airlines operating flights from Grand Island to Ontario, such as American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
10,000 reviews

Entertainment

6.9

Food

6.5

Overall

7.2

Crew

8.0

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Andrew,May 2025

LAX - MIA

2 hour delay. Discovered an engine problem late, we boarded the plane and they asked us to come off. To add insult to injury nothing was given to passengers to make amends. No free drink. No extra food or snacks. No free WiFi. Gimme a break
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Entertainment

6.9

Food

6.5

Overall

7.2

Crew

8.0

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Andrew,May 2025

LAX - MIA

2 hour delay. Discovered an engine problem late, we boarded the plane and they asked us to come off. To add insult to injury nothing was given to passengers to make amends. No free drink. No extra food or snacks. No free WiFi. Gimme a break

Related info for your journey

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

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Grand Island to Ontario (average of $246). Flying from Grand Island to Ontario in March is currently the most expensive (average of $328). 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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