The cheapest times to fly from BOI to GMP are

  • January 1st to March 4th
  • August 13th to December 9th

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 BOI to GMP is mid to late September. Prices can be as high as $3701 for Friday flights during early to mid June, or as low as $1006 for Wednesday flights around mid to late September.


When to Fly to Seoul

Flying from Boise, ID (BOI) to Seoul (GMP) will usually cost between $1167 to $2690 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid to late September with an average ticket price of $1212. Due to high demand the most expensive time to fly is early to mid June, with an average price of $2731. Planning your trip to low-cost times can easily save you $1520 on economy flights and even more on first-class flights. Generally, any price below $1454 can be considered a good price for a round-trip BOI to GMP flight.

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

BOI to GMP Flight Prices

Compared to other flights, the BOI to GMP flight is slightly more expensive than the average and costs more than the average flight leaving from Boise. The average price per mile (for a direct flight) is $0.16, which is far below average.


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to depart and return on this flight. Fridays are the most expensive days to fly to Seoul, and Sundays are the most expensive days to return to Boise. Selecting flights on the least expensive days could save you up to $285 (16%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Wednesday and returning a week later will cost an average of $1483. Return trip prices are from the GMP to BOI 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 BOI to GMP can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 11 hour 2 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 BOI to GMP while comparing.

Destination alternative #1: Incheon International Airport (ICN) in Seoul

  • 20 miles (32 km) away from GMP
  • Usually 12.65% less expensive than GMP
  • 1-layover flights available

See BOI to ICN flights


Flight Hacking BOI to GMP

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 BOI to GMP — but Champion Traveler does!

Hack #1: Beijing (BOI > PEK > GMP)

  • Price for both tickets: $1014
  • Average savings: $440 (30.26%)

See BOI to PEK flights

Hack #2: Seattle, WA (BOI > SEA > GMP)

  • Price for both tickets: $1118
  • Average savings: $337 (23.14%)

See BOI to SEA flights

Hack #3: Los Angeles, CA (BOI > LAX > GMP)

  • Price for both tickets: $1171
  • Average savings: $283 (19.46%)

See BOI to LAX flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 13 major airlines flying this route most often: Air Canada, Alaska, American, ANA, Asiana, China Airlines, China Southern, Delta, EVA Air, Hainan, JAL, Korean Air, United, and potentially more during busy seasons.

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

The distance between the two airports is roughly 5583 miles or 8985 kilometers.

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

The real-world flight time for a nonstop BOI to GMP flight is about 11 hour 2 minutes.

How many flights go between Boise, ID and Seoul?

It depends on the day of the week and the date, but a typical day might have around 51 available flights from BOI to GMP.


Airport Location Info


Departing Airport

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

Return Airport

Destination code GMP
Destination airport name Gimpo International Airport
City Seoul
Country South Korea
Latitude 37.6
Longitude 126.8


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.