The cheapest times to fly from ICN to GUM are

  • February 5th to March 25th
  • August 6th 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 ICN to GUM is mid to late September. Prices can be as high as $652 for Sunday flights during late July, or as low as $211 for Tuesday flights around mid to late September.


When to Fly to Guam

Flying from Seoul (ICN) to Guam, GU (GUM) will usually cost between $239 to $554 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 $235. Due to high demand the most expensive time to fly is late July, with an average price of $568. Planning your trip to low-cost times can easily save you $333 on economy flights and even more on first-class flights. Generally, any price below $443 can be considered a good price for a round-trip ICN to GUM flight.

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

ICN to GUM Flight Prices

Compared to other flights, the ICN to GUM flight is much cheaper than the average and costs much less than the average flight leaving from Seoul. The average price per mile (for a direct flight) is $0.14, 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. Sundays 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 $42 (9%) 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 $405. Return trip prices are from the GUM to ICN 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 ICN to GUM can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 4 hour 35 minutes may 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 a nonstop flight from ICN to GUM while comparing.

Destination alternative #1: Francisco C. Ada Saipan International Airport (SPN) in Saipan, MP

  • 129 miles (208 km) away from GUM
  • Usually 8.35% less expensive than GUM
  • Nonstop flights available

See ICN to SPN flights


Flight Questions Answered

Still have questions about flying from ICN to GUM? We’ve got answers.

Which airlines fly this route?

You can find 17 major airlines flying this route most often: Air India, Air Seoul, ANA, Asiana, Cathay Dragon, Cathay Pacific, Cebu Pacific, China Airlines, Delta, Hawaiian, JAL, Jeju Air, Jin Air, Korean Air, Philippine Airlines, T’Way Air, United, and potentially more during busy seasons.

How far away is it from Guam International Airport to Incheon International Airport?

The distance between the two airports is roughly 2005 miles or 3227 kilometers.

How long does it take to fly from ICN to GUM?

The real-world flight time for a nonstop ICN to GUM flight is about 4 hour 35 minutes.

How many flights go between Seoul and Guam, GU?

It depends on the day of the week and the date, but a typical day might have around 41 available flights from ICN to GUM.


Airport Location Info


Departing Airport

Origination code ICN
Origination airport name Incheon International Airport
City Seoul
Country South Korea
Latitude 37.5
Longitude 126.4

Return Airport

Destination code GUM
Destination airport name Guam International Airport
City Guam, GU
Country the United States
Latitude 13.5
Longitude 144.8


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.