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Cheap flights from Ontario to Grand Forks from $604

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Grand Forks departing on 8/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Ontario to Grand Forks

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
1:00 pm - 11:05 pm
ONT
-
GFK
8h 05m
2 stops
Delta Logo
10:45 am - 4:14 pm
GFK
-
ONT
7h 29m
2 stops
$604Delta
Tue, Aug 11 - Fri, Aug 21
Delta Logo
1:29 pm - 11:03 pm
ONT
-
GFK
7h 34m
2 stops
Delta Logo
3:50 pm - 11:34 pm
GFK
-
ONT
9h 44m
2 stops
$619Delta
Fri, May 8 - Tue, May 12
Delta Logo
1:00 pm - 11:05 pm
ONT
-
GFK
8h 05m
2 stops
Delta Logo
5:15 am - 12:29 pm
GFK
-
ONT
9h 14m
2 stops
$679Delta
Tue, Aug 11 - Sat, Aug 22
Delta Logo
6:00 am - 7:24 pm
ONT
-
GFK
11h 24m
2 stops
Delta Logo
6:40 am - 5:15 pm
GFK
-
ONT
12h 35m
2 stops
$868Delta
Sat, Apr 25 - Wed, Apr 29
Delta Logo
1:00 pm - 11:05 pm
ONT
-
GFK
8h 05m
2 stops
Delta Logo
3:55 pm - 11:44 pm
GFK
-
ONT
9h 49m
2 stops
$1,859Delta
Mon, Aug 10 - Fri, Aug 21

Delta flights from Ontario to Grand Forks

Our best Delta deals on Ontario to Grand Forks flight tickets
Delta
Aug 11
ONT1:00 pmOntario
8h 05m
2 stops
GFK11:05 pmGrand Forks
Aug 21
GFK10:45 amGrand Forks
7h 29m
2 stops
ONT4:14 pmOntario
$604
Delta
May 8
ONT1:29 pmOntario
7h 34m
2 stops
GFK11:03 pmGrand Forks
May 12
GFK3:50 pmGrand Forks
9h 44m
2 stops
ONT11:34 pmOntario
$619
Delta
Aug 11
ONT1:00 pmOntario
8h 05m
2 stops
GFK11:05 pmGrand Forks
Aug 22
GFK5:15 amGrand Forks
9h 14m
2 stops
ONT12:29 pmOntario
$679

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Grand Forks 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, momondo users made 832,500 searches. Data last updated April 14, 2026.
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

Cheapest round-trip
Quickest round-trip

OntarioGrand Forks

ONT - GFK

ONTGFK

Ontario

Tue 8/11

1:00 pm-11:05 pm

2 stops8h 05m

Grand Forks

Fri 8/21

10:45 am-4:14 pm

2 stops7h 29m

$604

OntarioGrand Forks

ONT - GFK

ONTGFK

Ontario

Fri 5/8

1:29 pm-11:03 pm

2 stops7h 34m

Grand Forks

Tue 5/12

3:50 pm-11:34 pm

2 stops9h 44m

$619

OntarioGrand Forks

ONT - GFK

ONTGFK

Ontario

Tue 8/11

1:00 pm-11:05 pm

2 stops8h 05m

Grand Forks

Sat 8/22

5:15 am-12:29 pm

2 stops9h 14m

$679

OntarioGrand Forks

ONT - GFK

ONTGFK

Ontario

Sat 4/25

6:00 am-7:24 pm

2 stops11h 24m

Grand Forks

Wed 4/29

6:40 am-5:15 pm

2 stops12h 35m

$868

OntarioGrand Forks

ONT - GFK

ONTGFK

Ontario

Mon 8/10

1:00 pm-11:05 pm

2 stops8h 05m

Grand Forks

Fri 8/21

3:55 pm-11:44 pm

2 stops9h 49m

$1,859
Cheapest one-way
Quickest one-way

OntarioGrand Forks

ONT - GFK

ONTGFK

Ontario

Sun 5/31

6:00 am-6:06 pm

2 stops10h 06m

$655

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Grand Forks from

How to get the cheapest flight ticket from Ontario to Grand Forks

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Ontario to Grand Forks?

Delta is the most popular carrier operating from Ontario to Grand Forks

What airlines fly to Grand Forks?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Grand Forks from Ontario according to our data. United Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Grand Forks. Keep in mind that there are 4 different airlines that fly to Grand Forks on a routine basis, so you have a few additional options to choose from.

When to book flights from Ontario to Grand Forks

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Grand Forks according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Grand Forks (ONT to GFK) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Grand Forks

Fastest flight time

7h 34m

Direct flights

None
The fastest flight from Ontario to Grand Forks takes 7h 34m
There are no direct flights from Ontario to Grand Forks. There are no popular flight routes from Ontario to Grand Forks.
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Frequently asked questions about flying from Ontario to Grand Forks

  • How far is Ontario to Grand Forks by plane?

    Ontario and Grand Forks are 1430.6 mi apart from one another. A reasonable flight in good conditions will take 7h 34m.

  • When did momondo last update prices for flights from Ontario Airport to Grand Forks Airport?

    Prices for flights from Ontario Airport to Grand Forks Airport were last updated today.

  • How old do you have to be to fly from Ontario Airport to Grand Forks Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Grand Forks Airport.

  • What documentation or ID do you need to fly to Grand Forks Airport?

    The necessary travel and health documents for your Grand Forks Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Grand Forks?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Grand Forks. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Grand Forks with flexible booking policies on momondo?

All flight searches from Ontario to Grand Forks on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to Grand Forks?

Once you have performed a search for Ontario to Grand Forks flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ontario to Grand Forks right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Grand Forks flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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