The cheapest times to fly from CPT to BOI are

  • January 15th to March 11th (except the weeks of February 12th and February 19th)
  • April 2nd to June 24th (except the week of April 9th)
  • October 29th to November 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 CPT to BOI is early May. Prices can be as high as $6063 for Friday flights during early January, or as low as $1044 for Monday flights around early May.


When to Fly to Boise

Flying from Cape Town (CPT) to Boise, ID (BOI) will usually cost between $1044 to $2071 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early May with an average ticket price of $1044. Due to high demand the most expensive time to fly is early January, with an average price of $2702. Planning your trip to low-cost times can easily save you $1658 on economy flights and even more on first-class flights. Generally, any price below $1462 can be considered a good price for a round-trip CPT to BOI flight.

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

CPT to BOI Flight Prices

Compared to other flights, the CPT to BOI flight is slightly more expensive than the average and costs slightly more than the average flight leaving from Cape Town. The average price per mile (for a direct flight) is $0.09, which is far below average.


Flight Prices by Day of the Week

Monday is usually the cheapest day to fly to BOI, and Tuesday the cheapest day to fly back into CPT. Fridays are the most expensive days to fly to Boise, and Saturdays are the most expensive days to return to Cape Town. Selecting flights on the least expensive days could save you up to $398 (16%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Monday and returning a week later will cost an average of $1234. Return trip prices are from the BOI to CPT 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 CPT 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 18 hour 53 minutes may not be realistic.


Flight Hacking CPT 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 CPT to BOI — but Champion Traveler does!

Hack #1: Reno, NV (CPT > RNO > BOI)

  • Price for both tickets: $1246
  • Average savings: $216 (14.77%)

See CPT to LAX flights

Hack #2: Los Angeles, CA (CPT > LAX > BOI)

  • Price for both tickets: $1287
  • Average savings: $176 (12%)

See CPT to RNO flights

Hack #3: Seattle, WA (CPT > SEA > BOI)

  • Price for both tickets: $1289
  • Average savings: $173 (11.83%)

See CPT to SEA flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 11 major airlines flying this route most often: Air France, Alaska, American, British Airways, Delta, Emirates, Finnair, Iberia, KLM, Lufthansa, United, and potentially more during busy seasons.

How far away is it from Boise Air Terminal Airport to Cape Town International Airport?

The distance between the two airports is roughly 9945 miles or 16005 kilometers.

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

The real-world flight time for a nonstop CPT to BOI flight is about 18 hour 53 minutes.

How many flights go between Cape Town and Boise, ID?

It depends on the day of the week and the date, but a typical day might have around 9 available flights from CPT to BOI.


Airport Location Info


Departing Airport

Origination codeCPT
Origination airport nameCape Town International Airport
CityCape Town
CountrySouth Africa

Return Airport

Destination codeBOI
Destination airport nameBoise Air Terminal Airport
CityBoise, ID
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.