Flight Deals from Denver to Seoul from $588

The flight from Denver to Seoul is about 6,190 miles. There is no scheduled nonstop service on this route, so the trip requires a connection.

Methodology

Flight times and distances come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). The typical flight time is the median scheduled block time across all carriers on the route, computed the same way in both directions so the difference reflects prevailing winds rather than any change in method. Distance is the great-circle distance between the two airports, so the actual flown track is typically 2-5% longer.

There are no direct flights from Denver to Seoul. The shortest connecting routing is on Air Canada via Vancouver (YVR), with a 3-hour-4-minute first leg, an 11-hour-45-minute second leg, and a 1-hour-6-minute layover for a total of 15 hours 55 minutes. United Airlines also connects through San Francisco (SFO) in 16 hours 15 minutes, and American Airlines through Dallas/Fort Worth (DFW) in 18 hours 19 minutes.

Methodology

Airlines and weekly frequencies are compiled from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a median fare is shown for a carrier, it reflects the real fares Priceline users found on this route in the last 72 hours.

Getting from Incheon International Airport to central Seoul is straightforward, with the AREX Express Train being the fastest at 43–51 minutes and the most-used way into the city. The AREX All-Stop Train is a budget alternative at ₩4,150–4,750 and takes about 59–66 minutes, while airport limousine buses (₩16,000–18,000) offer direct hotel drop-offs and taxis (₩47,000–52,000 plus tolls) provide door-to-door convenience. The express train runs every 20–40 minutes non-stop to Seoul Station, making it the best balance of speed and reliability for most travelers.

References

• Seoul to Incheon Airport Transportation Guide: AREX, Bus, and Taxi | NOL Worldworld.nol.com · Published Jul 22, 2024
• Incheon International Airport (ICN) Arrival Guide + Best ways to travel from ICN to Seoulyoutube.com · Published Mar 8, 2025
• Taxi Guideairport.kr
• Getting to Seoul from Incheon Airport - Seoul Metropolitan Governmentenglish.seoul.go.kr
• Newsairport.kr
• Incheon International Airport – Travel guide at Wikivoyageen.wikivoyage.org · Published Jul 18, 2026
• How to Travel From Incheon to Seoul: The Complete Guide - Wisewise.com · Published Jun 7, 2026

Overnight red-eye service from Denver to Seoul is available as a one-stop itinerary via San Francisco, where United's SFO–ICN leg departs at 23:45 and arrives at 04:20 the next morning before connecting onward to Seoul. There is no nonstop red-eye on this route, and the connecting option routes through SFO on United with a short layover of under an hour.

Methodology

Red-eye flights are identified from scheduled local departure and arrival times and block times in our flight-schedule database — built from published airline timetables and official schedule data, including U.S. Department of Transportation records for domestic routes. A flight counts as a red-eye when it departs in the afternoon or evening (3 p.m. or later local time) or in the early hours before 4 a.m., and is in the air at some point between midnight and 4 a.m. local time at both its departure airport and its arrival airport. An evening flight that lands before midnight at its destination is never counted, nor is a morning departure or a daytime long-haul that reaches the next calendar date only because of time zones. Each red-eye is labelled with its timing (for example, overnight and landing the next morning, or late-night and landing after midnight). For connecting itineraries the same rule is applied to the longer leg, from one representative day's flight search.

There is no nonstop service from Denver to Seoul. The quickest one-stop routing is via Vancouver on Air Canada, taking about 15 hours 55 minutes. United Airlines connects through San Francisco with up to 8 daily departures, while American Airlines routes via Dallas/Fort Worth and Alaska Airlines via Seattle. Air Canada and United are Star Alliance carriers, while American and Alaska belong to oneworld.

Methodology

Airlines and weekly frequencies come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a typical fare is shown for a carrier, it is the median of the real fares Priceline users found on this route in the last 72 hours.

Incheon International Airport is the main gateway for flights from Denver and serves nearly all international routes. Gimpo International Airport is closer to central Seoul but handles mainly domestic and short regional flights.

The RTD A Line commuter train is the most popular and budget-friendly option, running every 15 minutes from downtown Denver's Union Station to DEN in about 37 minutes for roughly $10 each way. Ride-share services like Uber and Lyft, along with taxis, offer door-to-door convenience in about 25–35 minutes and are the fastest choice, though they cost considerably more. Shared-ride shuttles and many hotel shuttles provide another mid-range option, while driving yourself means parking at on-airport garages, economy lots, or RTD Park-n-Ride stations along the rail line.

References

• Getting To and From | Denver International Airportflydenver.com · Published May 15, 2026
• Public Bus or Train | Denver International Airportflydenver.com · Published May 15, 2026
• Denver International Airport | Visit Denvervisitdenver.com · Published Dec 18, 2023
• Denver International Airport – Travel guide at Wikivoyageen.wikivoyage.org · Published Jul 4, 2026
• Airport | RTD-Denverrtd-denver.com
• How to get from Denver Airport (DEN) to Denver, CO | Uberuber.com · Published Aug 17, 2026
• Getting to Denver | AASLDaasld.org
• Skip the Stress: Boulder's Three Direct Routes to Denver International Airport - Boulder Chamber Transportation Connectionsbouldertc.org · Published Jan 29, 2026

Incheon International Airport has two transit hotels inside the secure zone, one in each terminal, plus Darakhyu capsule hotels in the public areas of both terminals. The transit hotels are located airside in Terminal 1 near Gate 11 and in Terminal 2 opposite Gate 251, with rooms available in six-hour blocks. Several nearby hotels, such as the Grand Hyatt Incheon, Best Western Premier Incheon Airport, and ibis Styles Ambassador Incheon Airport, offer free shuttle service to and from the airport.

References

• Seoul Incheon Airport Guide (ICN) - Sleeping in Airportssleepinginairports.net · Published Oct 1, 2018
• Incheon Airport Hotels – Seoul Incheon International Airport (ICN) Hotel Guideincheonairporthotels.com
• Incheon Airport Transit Hotelwalkerhill.com · Published Jun 12, 2022

Seoul Incheon International Airport offers free Wi-Fi throughout both terminals, plus numerous free smartphone charging stations and power towers with multiple sockets near gates, rest zones, and lounges. Paid shower facilities are available airside in both terminals, and free transit passenger showers with shampoo, body wash, and hair dryers operate near Gates 25, 29, 231, and 268. Travelers can purchase SIM cards, rent cell phones or Wi-Fi routers from major Korean providers, exchange money at booths throughout the airport, and store baggage with Hanjin Express. Babycare Lounges provide diaper-changing tables, washbasins, bottle sanitizers, and nursing equipment free of charge, while designated children's play areas are located airside in both terminals. A pharmacy is available inside the airport, and airport clinics operated by Inha University Hospital provide basic medical care in both terminals during daytime and early evening hours. Duty-free shopping includes luxury boutiques and cosmetic shops, and designated smoking areas exist inside each terminal. Additional amenities include a spa and beauty salon, massage chairs, a digital gym, stretching rooms, prayer rooms, laundry service, information desks that operate 24 hours in each terminal, and free Nap and Relax Zones with reclining seats airside.

References

• Seoul Incheon Airport Guide (ICN) - Sleeping in Airportssleepinginairports.net · Published Oct 1, 2018
• Essential Guide to Incheon International Airport Terminal 1 (ICN) | NOL Worldworld.nol.com · Published Jul 22, 2024
• Incheon International Airport (ICN) | Air Indiaairindia.com
• Incheon International Airport ICN, Seoul, South Korea reviewsmh.com.au · Published May 1, 2024
• The Most Comfortable Airport In The World Is A Lavish South Korean Gem With Several Incredible Amenitiesislands.com · Published Jun 16, 2025
• Newsairport.kr
• Seoul Incheon Airport (ICN) | LOT.comlot.com
• Convenience & Public Facilitiesairport.kr · Published Dec 31, 2000

Denver International Airport supports travelers with disabilities through Video Relay Service monitors near doors 607 and 608, TTY public telephones, visual paging monitors, interpreter services at information booths, the Aira wayfinding app for blind or low-vision passengers, and the Hidden Disabilities Sunflower Lanyard Program available from DEN Ambassadors or customer service agents. Incheon International Airport offers designated disabled parking and drop-off zones, help phone service, a free wheelchair lift between long-term parking and the terminal, electric vehicle and wheelchair transportation, priority lanes for the mobility impaired, and complimentary barrier-free support including accessible toilets and ramps. To arrange assistance at Incheon, contact the help desk at 1577-2600 before arriving or inquire at an on-site information desk, and airlines generally recommend notifying them at least 48 hours before the flight. At Denver, passengers can obtain a Sunflower Lanyard or request help directly from a customer service agent at any information booth.

References

• Accessibility and Mobility | Denver International Airportflydenver.com · Published Apr 2, 2026
• International Incheon Airportairport.kr
• Seoul Airport: All about the Terminals, Parking, Lounges & Hotelswelcomepickups.com · Published Jul 10, 2025
• Incheon International Airport (ICN) | Air Indiaairindia.com

Denver to Seoul has no nonstop service; the connecting options all use Boeing 787-9 aircraft for the long-haul leg. American Airlines routes through Dallas/Fort Worth, United through San Francisco, Air Canada through Vancouver, and Alaska Airlines through Seattle, each on a Boeing 787-9. Short connecting legs use a mix of Airbus A321, Boeing 737-800, 737 MAX 8, 737 MAX 9, and 757-300 depending on the carrier.

Methodology

Aircraft types come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). For U.S. routes the type is grounded in the tail number that actually operated the flight; elsewhere it comes from the airline's filed equipment code. Where the source does not commit to a specific variant we name the aircraft family (for example Airbus A320 family) rather than guess, and where no reliable type is on file the aircraft is omitted rather than estimated. Types describe typical scheduled equipment and can vary with seasonal or day-of-week assignments and last-minute swaps.

There is no nonstop service from Denver to Seoul; flights connect one-stop, most commonly via Vancouver on Air Canada, San Francisco on United, Dallas/Fort Worth on American, or Seattle on Alaska. Air Canada and United both belong to Star Alliance, while American and Alaska are oneworld members, so Star Alliance and oneworld are the two alliances serving this route. No major operating carrier on the route currently flies unaffiliated outside an alliance.

Methodology

Airlines and weekly frequencies are compiled from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a median fare is shown for a carrier, it reflects the real fares Priceline users found on this route in the last 72 hours.

Denver International Airport offers a strong lineup of lounges for a departing traveler: the American Airlines Admirals Club in Concourse C, the Delta Sky Club in Concourse A, the Capital One Lounge in Concourse A, the American Express Centurion Lounge in Concourse C, the USO Lounge in Concourse A, and three United Club locations spread across Concourses A and B. The Centurion Lounge features craft beer, a live-action cooking station with a chef-designed Italian menu, an immersive game experience, showers, and complimentary Wi-Fi, while the Capital One Lounge offers a grab-and-go station, full bar, relaxation room, shower suites, and high-speed Wi-Fi. The Delta Sky Club includes a buffet, two seating areas, and a self-serve bar, and the Admirals Club provides complimentary Wi-Fi, food for purchase, and conference rooms. Access generally requires membership, eligible premium cabin travel, or a qualifying credit card, though day passes are available for United Club and Admirals Club locations.

References

• Full List of Airport Lounges at Denver International Airport [DEN]upgradedpoints.com · Published Aug 10, 2026
• A Guide to Denver Airport Lounges: What to Know - NerdWalletnerdwallet.com · Published Dec 29, 2023
• Denver Airport Loungesglobalairportparking.com · Published Feb 4, 2026
• The Denver (DEN) Amex Centurion Lounge [Location, Hours, Amenities]upgradedpoints.com · Published Jul 9, 2026
• The Centurion Lounge at Denver International Airport | Amex USamericanexpress.com
• Airport lounges at Denver International (DEN) — The Points Partythepointsparty.com · Published Sep 7, 2026
• Denver, CO (DEN)aa.com
• Capital One Lounge at DEN, Denver International Airport, Concourse A Gate 34, Denver, CO 80249, US - MapQuestmapquest.com

Same-day changes and standby depend on the operating carrier and fare class; flexible, premium cabin, and elite-status tickets typically allow them, while restrictive economy fares usually do not.