In terms of precipitation, rainfall in Grand Forks ranges from 0.5 - 3.5 inches per month. June is typically the wettest month, when rainfall can reach 3.5 in. February is typically the driest time to visit Grand Forks when rainfall is around 0.5 in.

If weather is an important factor for your trip to Grand Forks, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 6.8 F).

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

Due to multiple factors, expect to potentially pay more when booking in November. For low rates, July can be a great choice for travel to Grand Forks. Flights to Grand Forks from Ontario in July are about $705 on average during July, but can be found for as low as $459.

What is the cheapest time of day to fly from ONT to GFK?

When flying from Ontario to Grand Forks, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

How can I find direct flights from Ontario to Grand Forks?

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

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

Yes. Cheapflights offers flight deals from Ontario to Grand Forks by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$467+ Flights from Ontario to Grand Forks

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Cheap flight deals from Ontario to Grand Forks

Round-trip from	$467 (Delta)
Popular in	November
Cheapest in	July
Average price	$560

From Ontario to Grand Forks

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Highest demand for flights based on searches. 21% potential increase in price ($190 potential increase over avg. RT price).

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Cheapest flight prices on average. 6% potential price decrease ($43 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from Ontario to Grand Forks

Cheapest flights from Ontario to Grand Forks
Explore the most affordable flight options available from Ontario to Grand Forks. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 1, 2025.

mié. 10/11:15 pmONT - GFK

2 stops7h 48mDelta

sáb. 10/412:21 pmGFK - ONT

2 stops12h 19mDelta

Deal found 7/1

$467

Best flights from Ontario to Grand Forks
Discover carefully curated flight deals from Ontario to Grand Forks that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated julio 1, 2025.

mié. 10/11:15 pmONT - GFK

2 stops7h 48mDelta

sáb. 10/412:21 pmGFK - ONT

2 stops12h 19mDelta

Deal found 7/1

$467

Last-minute flights from Ontario to Grand Forks
Discover last-minute flight deals from Ontario to Grand Forks. Data last updated julio 1, 2025 and is based on user searches.

mar. 7/151:15 pmONT - GFK

2 stops7h 49mDelta

sáb. 7/195:40 amGFK - ONT

2 stops8h 34mDelta

Deal found 6/29

$529

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Grand Forks that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioGrand Forks

ONT - GFK

ONTGFK

Ontario

mié. 10/1

1:15 pm-11:03 pm

2 stops7h 48m

Grand Forks

sáb. 10/4

12:21 pm-10:40 pm

2 stops12h 19m

$467

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Best time to book a flight from Ontario to Grand Forks

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

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

Currently, May is the cheapest month in which you can book a flight from Ontario to Grand Forks (average of $481). Flying from Ontario to Grand Forks in March is currently the most expensive (average of $579). 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 Grand Forks

Read reviews from past customers who have flown Delta from Ontario to Grand Forks. 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.

Delta

8.0

Very good

7,973 reviews

Reviews

1 / 20

10.0

Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Delta

8.0

Very good

7,973 reviews

Delta

8.0

Very good

7,973 reviews

Reviews

1 / 20

10.0

Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Related info for your journey

Can I find deals for flights from Ontario to Grand Forks that include hotel bookings?
Yes. In addition to deals on Ontario to Grand Forks flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Grand Forks?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Grand Forks.
Can I find deals for business class flights from Ontario to Grand Forks?
Yes. Cheapflights offers flight deals from Ontario to Grand Forks 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 Ontario to Grand Forks?
Currently, May is the cheapest month in which you can book a flight from Ontario to Grand Forks (average of $481). Flying from Ontario to Grand Forks in March is currently the most expensive (average of $579). 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.

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$467+ Cheap flights from Ontario to Grand Forks (ONT - GFK)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/1. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Grand Forks with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Grand Forks

Round-trip from

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Average price

Find flight deals from Ontario to Grand Forks

Cheapest flights from Ontario to Grand ForksExplore the most affordable flight options available from Ontario to Grand Forks. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 1, 2025.

Explore the most affordable flight options available from Ontario to Grand Forks. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 1, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Grand Forks that are best for you.

Best time to book a flight from Ontario to Grand Forks

Have a flexible travel schedule? Discover the best time to fly to Grand Forks from Ontario with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Grand Forks

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

Reviews of airlines servicing Grand Forks

Read reviews from past customers who have flown Delta from Ontario to Grand Forks. 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.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Grand Forks. 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 Ontario to Grand Forks that include hotel bookings?

How can I find direct flights from Ontario to Grand Forks?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Grand Forks

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Cheapest flights from Ontario to Grand Forks
Explore the most affordable flight options available from Ontario to Grand Forks. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 1, 2025.