The cheapest times to fly from SMF to ISN are

  • August 6th to November 4th (except the week of October 8th)
  • December 24th to February 25th

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 SMF to ISN is late January. Prices can be as high as $1320 for Monday flights during early to mid May, or as low as $330 for Saturday flights around late January.


When to Fly to Williston

Flying from Sacramento, CA (SMF) to Williston, ND (ISN) will usually cost between $398 to $800 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 $463. Due to high demand the most expensive time to fly is early to mid May, with an average price of $878. Planning your trip to low-cost times can easily save you $414 on economy flights and even more on first-class flights. Generally, any price below $554 can be considered a good price for a round-trip SMF to ISN flight.

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

SMF to ISN Flight Prices

Compared to other flights, the SMF to ISN flight is cheaper than the average and costs less than the average flight leaving from Sacramento. The average price per mile (for a direct flight) is $0.31, which is in the normal range for a flight.


Flight Prices by Day of the Week

Saturday is usually the cheapest day to fly to ISN. Mondays are the most expensive days to fly to Williston. Selecting flights on the least expensive days could save you up to $87 (13%) 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 $491. Return trip prices are from the ISN to SMF 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 SMF to ISN 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.


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 SMF to ISN while comparing.

Destination alternative #1: Minot International Airport (MOT) in Minot, ND

  • 109 miles (175 km) away from ISN
  • Usually 18.23% less expensive than ISN
  • 1-layover flights available

See SMF to MOT flights

Destination alternative #2: Dickinson – Theodore Roosevelt Regional Airport (DIK) in Dickinson, ND

  • 103 miles (166 km) away from ISN
  • Usually 12.27% less expensive than ISN
  • 1-layover flights available

See SMF to DIK flights


Flight Questions Answered

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

Which airlines fly this route?

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

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

The distance between the two airports is roughly 1109 miles or 1785 kilometers.

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

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

How many flights go between Sacramento, CA and Williston, ND?

It depends on the day of the week and the date, but a typical day might have around 85 available flights from SMF to ISN.


Airport Location Info


Departing Airport

Origination code SMF
Origination airport name Sacramento International Airport
City Sacramento, CA
Country the United States
Latitude 38.7
Longitude -121.6

Return Airport

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


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.