The cheapest times to fly from ISN to DFW are

  • January 1st to February 25th
  • August 13th to November 4th (except the week of October 8th)
  • December 3rd to December 16th

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 DFW is early to mid September. Prices can be as high as $885 for Monday flights during mid to late November, or as low as $286 for Tuesday flights around early to mid September.


When to Fly to Dallas

Flying from Williston, ND (ISN) to Dallas/Fort Worth, TX (DFW) will usually cost between $330 to $712 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid September with an average ticket price of $352. Due to high demand the most expensive time to fly is mid to late November, with an average price of $641. Planning your trip to low-cost times can easily save you $289 on economy flights and even more on first-class flights. Generally, any price below $479 can be considered a good price for a round-trip ISN to DFW flight.

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

ISN to DFW Flight Prices

Compared to other flights, the ISN to DFW flight is much cheaper than the average and costs much less than the average flight leaving from Williston. The average price per mile (for a direct flight) is $0.27, which is below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to DFW, and Saturday the cheapest day to fly back into ISN. Mondays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $205 (32%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $431. Return trip prices are from the DFW to ISN flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from ISN to DFW can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 2 hour 59 minutes may not be realistic.


Flight Questions Answered

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

Which airlines fly this route?

You can find 2 major airlines flying this route most often: Delta, United, and potentially more during busy seasons.

How far away is it from Dallas/Fort Worth International Airport to Sloulin Field International Airport?

The distance between the two airports is roughly 1110 miles or 1786 kilometers.

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

The real-world flight time for a nonstop ISN to DFW flight is about 2 hour 59 minutes.

How many flights go between Williston, ND and Dallas/Fort Worth, TX?

It depends on the day of the week and the date, but a typical day might have around 46 available flights from ISN to DFW.


Airport Location Info


Departing Airport

Origination codeISN
Origination airport nameSloulin Field International Airport
CityWilliston, ND
Countrythe United States

Return Airport

Destination codeDFW
Destination airport nameDallas/Fort Worth International Airport
CityDallas/Fort Worth, TX
Countrythe United States


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.