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Cheap Flights from Denver (DEN) to Seoul (ICN)

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      Travellers and cabin class, 1 Adult, Economy

      Compare Denver International to Incheon International flight deals

      Find the cheapest month or even day of the year to fly to Incheon International

      Book the best Incheon International fare with no extra fees

      Flight deals from Denver International to Incheon International

      Looking for a cheap last-minute deal or the best return flight from Denver International Airport to Incheon International Airport? If you want to travel next month, return fares start from $1,407. Find the lowest prices on one-way and return tickets right here.
      Seoul.$1,374 per passenger.Departing Mon, 21 Sep, returning Mon, 28 Sep.Return flight with Frontier Airlines and Air Premia.Outbound indirect flight with Frontier Airlines, departs from Denver International on Mon, 21 Sep, arriving in Incheon International.Inbound indirect flight with Air Premia, departs from Incheon International on Mon, 28 Sep, arriving in Denver International.Price includes taxes and charges.From $1,374, select.
      Seoul.$1,407 per passenger.Departing Sun, 4 Oct, returning Sat, 17 Oct.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Denver International on Sun, 4 Oct, arriving in Incheon International.Inbound indirect flight with WestJet, departs from Incheon International on Sat, 17 Oct, arriving in Denver International.Price includes taxes and charges.From $1,407, select.
      Seoul.$1,412 per passenger.Departing Fri, 13 Nov, returning Sun, 22 Nov.Return flight with Frontier Airlines and Air Premia.Outbound indirect flight with Frontier Airlines, departs from Denver International on Fri, 13 Nov, arriving in Incheon International.Inbound indirect flight with Air Premia, departs from Incheon International on Sun, 22 Nov, arriving in Denver International.Price includes taxes and charges.From $1,412, select.
      Seoul.$1,490 per passenger.Departing Tue, 29 Sep, returning Thu, 8 Oct.Return flight with Frontier Airlines and WestJet.Outbound indirect flight with Frontier Airlines, departs from Denver International on Tue, 29 Sep, arriving in Incheon International.Inbound indirect flight with WestJet, departs from Incheon International on Thu, 8 Oct, arriving in Denver International.Price includes taxes and charges.From $1,490, select.
      Seoul.$1,523 per passenger.Departing Sat, 28 Nov, returning Wed, 2 Dec.Return flight with Frontier Airlines and Air Premia.Outbound indirect flight with Frontier Airlines, departs from Denver International on Sat, 28 Nov, arriving in Incheon International.Inbound indirect flight with Air Premia, departs from Incheon International on Wed, 2 Dec, arriving in Denver International.Price includes taxes and charges.From $1,523, select.
      Seoul.$1,616 per passenger.Departing Thu, 19 Nov, returning Wed, 20 Jan.Return flight with Frontier Airlines and Air Premia.Outbound indirect flight with Frontier Airlines, departs from Denver International on Thu, 19 Nov, arriving in Incheon International.Inbound indirect flight with Air Premia, departs from Incheon International on Wed, 20 Jan, arriving in Denver International.Price includes taxes and charges.From $1,616, select.
      Seoul.$1,695 per passenger.Departing Mon, 11 Jan, returning Sun, 24 Jan.Return flight with Alaska Airlines and Air Premia.Outbound indirect flight with Alaska Airlines, departs from Denver International on Mon, 11 Jan, arriving in Incheon International.Inbound indirect flight with Air Premia, departs from Incheon International on Sun, 24 Jan, arriving in Denver International.Price includes taxes and charges.From $1,695, select.
      Seoul.$1,695 per passenger.Departing Wed, 28 Oct, returning Sat, 14 Nov.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Denver International on Wed, 28 Oct, arriving in Incheon International.Inbound indirect flight with Turkish Airlines, departs from Incheon International on Sat, 14 Nov, arriving in Denver International.Price includes taxes and charges.From $1,695, select.
      Seoul.$1,708 per passenger.Departing Wed, 2 Dec, returning Sun, 13 Dec.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Denver International on Wed, 2 Dec, arriving in Incheon International.Inbound indirect flight with Turkish Airlines, departs from Incheon International on Sun, 13 Dec, arriving in Denver International.Price includes taxes and charges.From $1,708, select.
      Seoul.$1,739 per passenger.Departing Tue, 29 Sep, returning Mon, 21 Dec.Return flight with Alaska Airlines and China Airlines.Outbound indirect flight with Alaska Airlines, departs from Denver International on Tue, 29 Sep, arriving in Incheon International.Inbound indirect flight with China Airlines, departs from Incheon International on Mon, 21 Dec, arriving in Denver International.Price includes taxes and charges.From $1,739, select.
      Seoul.$1,762 per passenger.Departing Fri, 30 Apr, returning Sun, 23 May.Return flight with Southwest Airlines and China Airlines.Outbound indirect flight with Southwest Airlines, departs from Denver International on Fri, 30 Apr, arriving in Incheon International.Inbound indirect flight with China Airlines, departs from Incheon International on Sun, 23 May, arriving in Denver International.Price includes taxes and charges.From $1,762, select.
      Seoul.$1,777 per passenger.Departing Tue, 13 Jul, returning Sat, 17 Jul.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Denver International on Tue, 13 Jul, arriving in Incheon International.Inbound indirect flight with Turkish Airlines, departs from Incheon International on Sat, 17 Jul, arriving in Denver International.Price includes taxes and charges.From $1,777, select.
      Seoul.$1,780 per passenger.Departing Wed, 17 Feb, returning Fri, 26 Mar.Return flight with Southwest Airlines and China Airlines.Outbound indirect flight with Southwest Airlines, departs from Denver International on Wed, 17 Feb, arriving in Incheon International.Inbound indirect flight with China Airlines, departs from Incheon International on Fri, 26 Mar, arriving in Denver International.Price includes taxes and charges.From $1,780, select.
      Seoul.$1,780 per passenger.Departing Mon, 1 Mar, returning Fri, 26 Mar.Return flight with Southwest Airlines and China Airlines.Outbound indirect flight with Southwest Airlines, departs from Denver International on Mon, 1 Mar, arriving in Incheon International.Inbound indirect flight with China Airlines, departs from Incheon International on Fri, 26 Mar, arriving in Denver International.Price includes taxes and charges.From $1,780, select.
      Seoul.$1,781 per passenger.Departing Sat, 1 May, returning Mon, 31 May.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Denver International on Sat, 1 May, arriving in Incheon International.Inbound indirect flight with Turkish Airlines, departs from Incheon International on Mon, 31 May, arriving in Denver International.Price includes taxes and charges.From $1,781, select.
      Seoul.$1,889 per passenger.Departing Wed, 17 Mar, returning Wed, 9 Jun.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Denver International on Wed, 17 Mar, arriving in Incheon International.Inbound indirect flight with Turkish Airlines, departs from Incheon International on Wed, 9 Jun, arriving in Denver International.Price includes taxes and charges.From $1,889, select.

      Find the cheapest month to fly from Denver International to Incheon International

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Denver International to Incheon International flights are currently cheapest in September.
      Sep
      from $1,374
      Oct
      from $1,407
      Nov
      from $1,412
      Dec
      from $1,708
      Jan
      from $1,695
      Feb
      from $1,897
      Mar
      from $1,780
      Apr
      from $1,943
      May
      from $1,781
      Jun
      from $2,072
      Jul
      from $1,777
      Aug
      Find prices

      Denver International to Incheon International: Alternative routes

      Compare routes from Denver International to Seoul below. You may find an airport to fly into that's cheaper, faster, or easier than Incheon International.

      Gimpo International

      17km from central Seoul
      Closest
      from $1,900
      Search flights

      Incheon International

      48km from central Seoul
      Cheapest
      from $1,374
      Search flights

      Denver to Seoul: Flight information

      The things to know before you go.
      Cheapest flight found$1,374
      Cheapest month to flySeptember

      Finding cheap flights from Denver International to Incheon International: Frequently asked questions

      The best price we found for a return flight from Denver International to Incheon International is $1,374. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      Currently, there are no airlines that fly direct from Denver International to Incheon International. But we found flights with one or more stops from $1,374.
      As of September 2026, there are no flights flying from Denver International to Incheon International.
      The cheapest month to fly from Denver International to Incheon International is usually September.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Denver International Airport to Incheon International Airport on Monday, 21 September 2026.
      No airlines currently offer direct flights between Denver International Airport and Incheon International Airport. Most routes have one or more stops.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Incheon International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seoul is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Frontier Airlines offers the cheapest flight tickets to Incheon International.

      Travelling from Denver International Airport (DEN) to Incheon International Airport (ICN): what you need to know

      • Seoul is 16 hours ahead of Denver and is in the UTC+9 timezone.

      • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for stress-free travel. Get to the airport on time to board your DEN to ICN flight.

      • During popular months such as July, you'll want to get to the airport earlier. Plan to arrive two hours before a domestic departure and four hours ahead of an international flight when you fly during a high season in general.

      • If you want to split up your journey, just uncheck 'Direct flights only' when searching for your ticket from Denver International Airport to Incheon International Airport. Here are the most popular stopovers between DEN and ICN:

        • Seattle / Tacoma International Airport

        • Harry Reid International Airport

        • Tokyo Narita Airport

      How to find the cheapest flights from Denver International Airport (DEN) to Incheon International Airport (ICN)

      • At the moment, $629 is the lowest price we've found for a one-way Denver International Airport to Incheon International Airport flight. The best price for a return ticket is $1,374. Keep in mind that fares may change due to demand when booking.

      • To get your hands on cheap tickets from DEN to ICN, book as early as you can. Airlines usually offer lower fares when flights are first made available.

      • The 'Whole month' search function shows you the cheapest flights from Denver International Airport to Incheon International Airport across the entire month. It's a great way to snap up a bargain if your plans aren't set in stone.

      • You won't have to check back in every day to find out if fares have dropped when you create a Price Alert. We'll let you know as soon as there's a new deal on cheap flights from DEN to ICN.

      • Tailor your flights with filters. Choose your preferred departure and arrival times, total journey duration and airlines. You can also sort your results by 'Best,' 'Fastest' or 'Cheapest' flights from Denver International Airport to Incheon International Airport.

      Handy information about Denver International Airport (DEN)

      • You'll find DEN at 8500 Pena Boulevard.

      • Denver International Airport maintains a solid on-time performance, so you're unlikely to face delays. Departures from DEN arrive at their destination as scheduled 80% of the time.

      • Denver International Airport is about 40 kilometres from central Denver. If you're driving, catching a taxi or ride-sharing from the centre, it'll take 35 minutes or so to get there, depending on the traffic.

      • The journey on public transport takes roughly 35 minutes.

      • Get your flight from Denver International Airport to Incheon International Airport off to a hassle-free start. Just a quick ride from DEN, book a night at Baymont by Wyndham Denver International Airport and be well-rested for the journey ahead.

      Arriving at Incheon International Airport (ICN)

      Getting from Incheon International Airport (ICN) to central Seoul

      • Incheon International Airport to central Seoul has a drive time of about 1 hour 5 minutes. It's approximately 48 kilometres away.

      • When travelling by public transport, expect a journey of about 50 minutes.

      When to fly to Incheon International Airport (ICN)

      • It's time to work out your dates for your flight from Denver International Airport to Incheon International Airport. August is the busiest month to head to Seoul. If you want a more laid-back vibe, go in March.

      • When reserving your flight from Denver International Airport to Incheon International Airport, consider the type of weather you enjoy. August is the warmest month in Seoul, with the temperature ranging from 19ºC (66ºF) to 32ºC (90ºF).

      • January sees average temperatures of between -12ºC (10ºF) and 4ºC (39ºF). Search for cheap tickets from DEN to ICN sometime around then if you like travelling in cooler conditions.

      Explore more of South Korea

      • Seoul has loads to offer, but there are so many other corners of South Korea you'll want to see. About 322 kilometres south-east of Seoul, a trip to Busan will keep you on the move. Start with leading sights like Gamcheon Culture Village, Haeundae Beach and Beautiful View Busan - Diamond Bridge.

      • Around 56 kilometres west of Seoul, Incheon is another favourite stop in South Korea. No visit is complete without checking out INSPIRE Arena, Wangsan Beach and Seokmodo Natural Forest.

      Plan smart, explore more

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      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.