The cheapest times to fly from ISN to FNT are

  • January 1st to February 25th
  • August 13th to November 18th (except the week of November 5th)
  • early December

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from ISN to FNT is late January. Prices can be as high as $1568 for Wednesday flights during early to mid May, or as low as $428 for Saturday flights around late January.


When to Fly to Flint

Flying from Williston, ND (ISN) to Flint, MI (FNT) will usually cost between $612 to $1254 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late January with an average ticket price of $681. Due to high demand the most expensive time to fly is early to mid May, with an average price of $1281. Planning your trip to low-cost times can easily save you $600 on economy flights and even more on first-class flights. Generally, any price below $987 can be considered a good price for a round-trip ISN to FNT flight.

See below for a graph of average weekly prices for the ISN to FNT route. All prices are for round-trip tickets in USD.

ISN to FNT Flight Prices

Compared to other flights, the ISN to FNT flight is priced close to the average and costs less than the average flight leaving from Williston. The average price per mile (for a direct flight) is $0.6, which is above average.


Flight Prices by Day of the Week

Saturday is usually the cheapest day to fly to FNT. Wednesdays are the most expensive days to fly to Flint. Selecting flights on the least expensive days could save you up to $110 (10%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Saturday and returning a week later will cost an average of $834. Return trip prices are from the FNT to ISN flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from ISN to FNT can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 2 hour 49 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from ISN to FNT while comparing.

Destination alternative #1: Detroit Metro Wayne County Airport (DTW) in Detroit, MI

  • 56 miles (90 km) away from FNT
  • Usually 57.45% less expensive than FNT
  • 1-layover flights available

See ISN to DTW flights

Destination alternative #2: Gerald R. Ford International Airport (GRR) in Grand Rapids, MI

  • 90 miles (145 km) away from FNT
  • Usually 56.43% less expensive than FNT
  • 1-layover flights available

See ISN to GRR flights

Destination alternative #3: MBS International Airport (MBS) in Saginaw/Bay City/Midland, MI

  • 43 miles (69 km) away from FNT
  • Usually 47.11% less expensive than FNT
  • 1-layover flights available

See ISN to MBS flights


Flight Hacking ISN to FNT

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from ISN to FNT — but Champion Traveler does!

Hack #1: Chicago, IL (ISN > ORD > FNT)

  • Price for both tickets: $658
  • Average savings: $329 (33.33%)

See ISN to ORD flights

Hack #2: Minneapolis, MN (ISN > MSP > FNT)

  • Price for both tickets: $685
  • Average savings: $302 (30.6%)

See ISN to MSP flights

Hack #3: Cincinnati, OH (ISN > CVG > FNT)

  • Price for both tickets: $694
  • Average savings: $294 (29.74%)

See ISN to CVG flights


Flight Questions Answered

Still have questions about flying from ISN to FNT? We’ve got answers.

Which airlines fly this route?

You can find 3 major airlines flying this route most often: American, Delta, United, and potentially more during busy seasons.

How far away is it from Bishop International Airport to Sloulin Field International Airport?

The distance between the two airports is roughly 1024 miles or 1648 kilometers.

How long does it take to fly from ISN to FNT?

The real-world flight time for a nonstop ISN to FNT flight is about 2 hour 49 minutes.

How many flights go between Williston, ND and Flint, MI?

It depends on the day of the week and the date, but a typical day might have around 15 available flights from ISN to FNT.


Airport Location Info


Departing Airport

Origination code ISN
Origination airport name Sloulin Field International Airport
City Williston, ND
Country the United States
Latitude 48.2
Longitude -103.6

Return Airport

Destination code FNT
Destination airport name Bishop International Airport
City Flint, MI
Country the United States
Latitude 43
Longitude -83.7


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.