Pyeongtaek to Hagåtña (OSN–GUM) — Airlines, Schedules & Connections

OSN Airport Page →
airlines charter/private
On-time Some delays Frequent delays
Flight Schedule No service
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  Flight Airline AC Dep Arr Dur OTP Sched  
✈ Nonstop

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No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.

1-STOP More options, longer trips
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Pyeongtaek to Hagåtña
Route information for OSN to GUM.
+1h ahead

On-Time Performance

What to expect at each end of your journey.
Outbound
OSN → GUM
100%
Generally reliable. Most flights run on time.
Arriving
100%
Return
GUM → OSN
67%
Moderate delays possible. Allow buffer time.
Departing
67%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. GUM delays →

Other ways to reach Hagåtña from Pyeongtaek

Nearby airports with service to Antonio B. Won Pat International Airport.
Metric OSN→GUM GMP→GUM ICN→GUM
Distance from OSN 35 mi 41 mi
Nonstop airlines 2 4
Weekly flights 42
Airports within 200 miles of OSN with service to Antonio B. Won Pat International Airport.

Travel Essentials

Practical planning for this route.
Time Difference
+1h
Hagåtña is 1 hour ahead of Pyeongtaek.
OSN: KST · GUM: ChST

When it's 6:00 PM in Pyeongtaek, it's 7:00 PM in Hagåtña.
Visa & Entry

South Korean passport holders can enter Guam under the Guam-CNMI Visa Waiver Program for up to 45 days without an ESTA or US visa. No fee, no advance application beyond the CBP I-736 form (filled out on the plane or at the airport). Passport must be a biometric e-passport (with the chip symbol) valid for at least 6 months. You need a return ticket on a participating carrier, a completed I-736, and a completed I-94 arrival form.

The Guam-CNMI waiver is separate from the US Visa Waiver Program (ESTA). You can also enter Guam with an approved ESTA ($21, valid 2 years), which allows 90 days and onward travel to the US mainland. If you plan only Guam, the Guam-CNMI waiver is simpler. CBP officers at A.B. Won Pat Airport (GUM) process arrivals quickly since Guam receives massive Korean tourist volume. Korean is widely spoken at hotels and shops in Tumon Bay.

Direct flights from Seoul Incheon to Guam run about 4 hours 30 minutes on Korean Air, Jin Air, T'way, and Jeju Air. Multiple daily frequencies make Guam one of the easiest beach getaways from Korea. Guam uses the US dollar. No mandatory vaccinations. Guam is 1 hour ahead of Korea (ChST is UTC+10 vs KST UTC+9). Duty-free shopping is available at T Galleria and several outlet malls in Tumon. Rent a car at the airport for about $40 to $60 per day, as public transit on Guam is limited. The LeaLea and Red Guam Shuttle buses run between Tumon hotels and shopping areas for $5 to $10 per ride.

OSN–GUM Quick Facts

Key statistics for the Pyeongtaek to Hagåtña route.
Route details
Time difference+1 hour
Airlines (nonstop)0
Origin: OSN
Full nameOsan Air Base
IATA / ICAOOSN / RKSO
TimezoneAsia/Seoul
Elevation38 ft / 12 m
Destination: GUM
IATA / ICAOGUM / PGUM
TimezonePacific/Guam
Passengers/yr1.9M
Elevation298 ft / 91 m

Frequently Asked Questions

Common questions about OSN to GUM flights.
Hagåtña is 1 hour ahead of Pyeongtaek.
Yes, return flights from GUM to OSN are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include GMP and ICN. See the Alternatives section for a full comparison.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
See the On-Time Performance section for the latest delay data at both airports. This shows departure and arrival reliability to help you plan.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.

Connecting Options and Alternatives

Nearby alternative airports include Seoul (GMP) and Seoul (ICN).