$348 Cheap Flights from Ontario (ONT) to Grand Forks (GFK)

View $348 flight on Fri, Oct 31, 2025Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Grand Forks, ND (GFK-Grand Forks Intl.)

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Cheap Flights from Ontario to Grand Forks (ONT-GFK)

Prices were available within the past 7 days and start at $348 for one-way flights and $379 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Nov 26 - Sun, Dec 7
ONT
Ontario
GFK
Grand Forks
$379 Roundtrip, found 8 hours ago
$379
Roundtrip
found 8 hours ago
Select Delta flight, departing Wed, Nov 26 from Ontario to Grand Forks, returning Sun, Dec 7, priced at $379 found 8 hours ago
Delta
Sat, Nov 15 - Mon, Dec 1
ONT
Ontario
GFK
Grand Forks
$394 Roundtrip, found 8 hours ago
$394
Roundtrip
found 8 hours ago
Select Delta flight, departing Sat, Nov 15 from Ontario to Grand Forks, returning Mon, Dec 1, priced at $394 found 8 hours ago
Delta
Tue, Nov 4 - Sat, Nov 15
ONT
Ontario
GFK
Grand Forks
$404 Roundtrip, found 5 days ago
$404
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Nov 4 from Ontario to Grand Forks, returning Sat, Nov 15, priced at $404 found 5 days ago
Delta
Mon, Nov 24 - Thu, Nov 27
ONT
Ontario
GFK
Grand Forks
$415 Roundtrip, found 3 days ago
$415
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Nov 24 from Ontario to Grand Forks, returning Thu, Nov 27, priced at $415 found 3 days ago
Delta
Sat, Dec 6 - Wed, Dec 24
ONT
Ontario
GFK
Grand Forks
$416 Roundtrip, found 8 hours ago
$416
Roundtrip
found 8 hours ago
Select Delta flight, departing Sat, Dec 6 from Ontario to Grand Forks, returning Wed, Dec 24, priced at $416 found 8 hours ago
Delta
Tue, Nov 4 - Sat, Nov 8
ONT
Ontario
GFK
Grand Forks
$429 Roundtrip, found 2 days ago
$429
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Nov 4 from Ontario to Grand Forks, returning Sat, Nov 8, priced at $429 found 2 days ago
Delta
Sat, Nov 22 - Thu, Nov 27
ONT
Ontario
GFK
Grand Forks
$434 Roundtrip, found 3 days ago
$434
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Nov 22 from Ontario to Grand Forks, returning Thu, Nov 27, priced at $434 found 3 days ago
Delta
Thu, Dec 18 - Tue, Jan 6
ONT
Ontario
GFK
Grand Forks
$449 Roundtrip, found 6 days ago
$449
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, Dec 18 from Ontario to Grand Forks, returning Tue, Jan 6, priced at $449 found 6 days ago
Delta
Fri, Oct 31 - Tue, Nov 4
ONT
Ontario
GFK
Grand Forks
$459 Roundtrip, found 2 days ago
$459
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Oct 31 from Ontario to Grand Forks, returning Tue, Nov 4, priced at $459 found 2 days ago
Delta
Fri, Nov 14 - Thu, Nov 27
ONT
Ontario
GFK
Grand Forks
$470 Roundtrip, found 8 hours ago
$470
Roundtrip
found 8 hours ago
Select Delta flight, departing Fri, Nov 14 from Ontario to Grand Forks, returning Thu, Nov 27, priced at $470 found 8 hours ago
Flights from Ontario (ONT) to Grand Forks (GFK)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Grand Forks Intl.
Airlines serving
Delta
Roundtrip price
$379
Distance
1424 mi

Ontario to Grand Forks Flights

The cheapest times to fly from Ontario to Grand Forks

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ontario to Grand Forks are during the month of November. You can find some of the cheapest flights from Ontario to Grand Forks with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ontario to Grand Forks

Sunday is one of the best days to book for cheap flights from Ontario to Grand Forks: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ontario to Grand Forks

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ontario to Grand Forks in 2025. You can also book with separate airlines for your outbound and return journeys, from $348 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ontario to Grand Forks flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ontario to Grand Forks airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Los Angeles - Ontario Intl. Airport (ONT) to Grand Forks Intl. Airport (GFK) cost?
Grab a cheap one-way flight from $348 or cheap return flight from $379 from Los Angeles - Ontario Intl. Airport (ONT) to Grand Forks Intl. Airport (GFK) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Los Angeles - Ontario Intl. Airport (ONT) to Grand Forks Intl. Airport (GFK)?
The cheapest month to fly from ONT to GFK is November, when demand is low. Off-peak season is generally when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Los Angeles - Ontario Intl. Airport (ONT) to Grand Forks Intl. Airport (GFK)?
To find the cheapest airline that'll fly you from ONT to GFK, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Los Angeles - Ontario Intl. Airport (ONT) to Grand Forks Intl. Airport (GFK)?
Nonstop flights from Los Angeles - Ontario Intl. Airport (ONT) to Grand Forks Intl. Airport (GFK) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ONT to GFK?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary depending on a number of factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Los Angeles - Ontario Intl. Airport (ONT) to Grand Forks Intl. Airport (GFK)?
To avoid potential delays on the Los Angeles - Ontario Intl. Airport (ONT) to Grand Forks Intl. Airport (GFK) route, fly before 3 PM. Later flights have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Los Angeles - Ontario Intl. Airport (ONT) to Grand Forks Intl. Airport (GFK) last-minute?
Booking your ticket from ONT to GFK just before your journey is typically more expensive. But if there's some wiggle room with your travel dates and times, you could land a cheap last-minute fare.
Is it cheaper to book an ONT to GFK flight and hotel package?
Compared with arranging flights and hotels separately, booking an ONT to GFK flight and hotel package with Expedia could result in significant savings. Better yet, managing everything in one place will take the hassle out of planning your trip. Just pick your flights and choose from our wide range of stays, then tailor your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Los Angeles - Ontario Intl. Airport (ONT) to Grand Forks Intl. Airport (GFK)?
If you booked your ONT to GFK flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of fare you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more information.

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*Available to One Key members.