The cheapest times to fly from OSL to BOI are

  • January 8th to May 20th (except the weeks of March 12th and March 26th)
  • October 8th to December 9th (except the weeks of October 15th, October 22nd, November 12th, and November 26th)

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 OSL to BOI is early December. Prices can be as high as $1661 for Saturday flights during early August, or as low as $801 for Tuesday flights around early December.


When to Fly to Boise

Flying from Oslo (OSL) to Boise, ID (BOI) will usually cost between $870 to $1164 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early December with an average ticket price of $880. Due to high demand the most expensive time to fly is early August, with an average price of $1227. Planning your trip to low-cost times can easily save you $347 on economy flights and even more on first-class flights. Generally, any price below $924 can be considered a good price for a round-trip OSL to BOI flight.

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

OSL to BOI Flight Prices

Compared to other flights, the OSL to BOI flight is priced close to the average and costs more than the average flight leaving from Oslo. The average price per mile (for a direct flight) is $0.12, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Saturdays 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 $100 (8%) 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 $929. Return trip prices are from the BOI to OSL 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 OSL to BOI can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 9 hour 24 minutes may not be realistic.


Flight Hacking OSL to BOI

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 OSL to BOI — but Champion Traveler does!

Hack #1: Los Angeles, CA (OSL > LAX > BOI)

  • Price for both tickets: $550
  • Average savings: $375 (40.53%)

See OSL to SJC flights

Hack #2: San Jose, CA (OSL > SJC > BOI)

  • Price for both tickets: $604
  • Average savings: $321 (34.69%)

See OSL to LAX flights

Hack #3: San Francisco, CA (OSL > SFO > BOI)

  • Price for both tickets: $647
  • Average savings: $277 (29.98%)

See OSL to SFO flights


Flight Questions Answered

Still have questions about flying from OSL to BOI? We’ve got answers.

Which airlines fly this route?

You can find 12 major airlines flying this route most often: Air Canada, Air France, Alaska, American, British Airways, Delta, Icelandair, KLM, Lufthansa, SAS, Singapore Airlines, United, and potentially more during busy seasons.

How far away is it from Boise Air Terminal Airport to Gardermoen Airport?

The distance between the two airports is roughly 4676 miles or 7525 kilometers.

How long does it take to fly from OSL to BOI?

The real-world flight time for a nonstop OSL to BOI flight is about 9 hour 24 minutes.

How many flights go between Oslo and Boise, ID?

It depends on the day of the week and the date, but a typical day might have around 18 available flights from OSL to BOI.


Airport Location Info


Departing Airport

Origination code OSL
Origination airport name Gardermoen Airport
City Oslo
Country Norway
Latitude 60.2
Longitude 11.1

Return Airport

Destination code BOI
Destination airport name Boise Air Terminal Airport
City Boise, ID
Country the United States
Latitude 43.6
Longitude -116.2


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.