DEN - SEL

$372 Find Cheap Flights from Denver to Seoul - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Seoul departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seoul

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Seoul.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Seoul.
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Everything you should know

Cheapest round-trip
$844
Typical prices: $1,152-$978
Multiple Airlines
Wed 10/21Fri 10/30
DEN - ICN • 1 stop
Cheapest one-way
$372
Typical prices: $588-$666
WestJet
Mon 8/31
DEN - ICN • 1 stop
Top airlines
Cheapest • from $872 (round-trip)
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Denver and Seoul. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $833 (round-trip)
Shortest trip • 15h 30m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 27% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 84% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
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We hope you love your trip to Seoul!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Denver to Seoul (DEN-SEL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Seoul that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Seoul

Wed, Oct 21 - Fri, Oct 30
Multiple Airlines Logo
6:30 am - 4:30 am
DEN
-
ICN
31h 00m
1 stop
Multiple Airlines Logo
10:20 pm - 12:25 am
ICN
-
DEN
17h 05m
1 stop
$844Multiple Airlines
Sat, Aug 29 - Sun, Sep 20
WestJet Logo
12:15 pm - 6:45 pm
DEN
-
ICN
15h 30m
1 stop
WestJet Logo
8:45 pm - 11:20 am
ICN
-
DEN
29h 35m
1 stop
$872WestJet
Tue, Sep 1 - Tue, Sep 29
Multiple Airlines Logo
10:39 pm - 3:50 pm
DEN
-
ICN
26h 11m
1 stop
Multiple Airlines Logo
1:00 pm - 6:12 pm
ICN
-
DEN
20h 12m
1 stop
$895Multiple Airlines
Wed, Aug 19 - Sun, Sep 13
WestJet Logo
12:15 pm - 6:45 pm
DEN
-
ICN
15h 30m
1 stop
WestJet Logo
8:45 pm - 11:20 am
ICN
-
DEN
29h 35m
1 stop
$899WestJet
Wed, Aug 19 - Sun, Sep 13
WestJet Logo
12:15 pm - 6:45 pm
DEN
-
ICN
15h 30m
1 stop
WestJet Logo
8:45 pm - 11:20 am
ICN
-
DEN
29h 35m
1 stop
$903WestJet
Wed, Oct 21 - Fri, Oct 30
Multiple Airlines Logo
6:30 am - 4:30 am
DEN
-
ICN
31h 00m
1 stop
Multiple Airlines Logo
1:20 pm - 12:15 am
ICN
-
DEN
25h 55m
2 stops
$905Multiple Airlines
Tue, Aug 18 - Sun, Sep 13
China Eastern Logo
7:31 am - 11:00 am
DEN
-
GMP
36h 29m
2 stops
China Eastern Logo
8:50 pm - 6:17 pm
GMP
-
DEN
36h 27m
2 stops
$1,063China Eastern
Wed, Aug 19 - Tue, Sep 15
China Eastern Logo
7:31 am - 11:00 am
DEN
-
GMP
36h 29m
2 stops
China Eastern Logo
8:50 pm - 6:17 pm
GMP
-
DEN
36h 27m
2 stops
$1,241China Eastern
Tue, Aug 18 - Thu, Aug 27
Japan Airlines Logo
7:00 am - 10:40 am
DEN
-
GMP
36h 40m
2 stops
Japan Airlines Logo
12:05 pm - 5:56 pm
GMP
-
DEN
20h 51m
2 stops
$1,442Japan Airlines
Mon, Aug 17 - Tue, Aug 25
Japan Airlines Logo
8:40 am - 10:40 am
DEN
-
GMP
35h 00m
2 stops
Japan Airlines Logo
12:05 pm - 5:56 pm
GMP
-
DEN
20h 51m
2 stops
$1,483Japan Airlines
Booking Insights

KAYAK's insights & trends for Denver to Seoul flights

Get data-powered insights and trends into flights from Denver to Seoul to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Denver to Seoul?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Denver to Seoul departing in October.

What is the cheapest month to fly from Denver to Seoul?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Seoul, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to Seoul is February, where tickets cost $59 (return) on average. On the other hand, the most expensive months are November and July, where the average cost of round-trip tickets is $866 and $811 respectively.

How far in advance should I book a flight from Denver to Seoul?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to Seoul, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Denver to Seoul, you should book around 2 weeks before departure, which saves you about 27% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$372
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Denver to Seoul Incheon Airport

When to book flights from Denver to Seoul

Are your dates flexible? Find out the best times to travel from Denver to Seoul based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Denver to Seoul

  • Which eco-friendly practices do airlines flying from Denver to Seoul implement?

    10,316 lb is the average CO₂ emitted per person for this route. Air Canada has more sustainable flights emitting 45% less CO2. To reduce its carbon footprint, the airline has created several eco-friendly procedures. Air Canada uses the most up-to-date fuel-efficient aircraft and fleet optimization techniques to save fuel use.

  • Which airline offers family-friendly services from Denver to Seoul?

    For a journey from Denver to Seoul, Delta Airlines provides family-friendly services and amenities like priority boarding for parents of young children, pre-boarding with car seats, complimentary meals and snacks for kids, complimentary entertainment, and devoted support workers. Delta also provides bassinets and diapers upon request for families traveling with newborns and young children. Families can also take advantage of additional benefits and savings through Delta's SkyMiles program, and stroller-check services are offered at the airport of departure.

  • What are the common layover cities when flying from Denver to Seoul?

    You can find flights from Denver to Seoul with one to two connections en route. The layovers differ with your airline. For instance, United Airlines has a layover at San Francisco International Airport (SFO), while China Airlines have stops at Los Angeles International Airport (LAX). Japan Airlines has a layover at Chicago O'Hare Intl (ORD).

  • What transport options are from Seoul Airport (SEL) to downtown?

    Buses, trains, taxis, and vehicle rental services are available to get from Seoul Airport (SEL) to the city center. Bus services go from the airport to different areas of the city, and the trip takes between 45 minutes and an hour, depending on traffic. It only takes 43 minutes to go from the airport to downtown Seoul via the Airport Railway Express (AREX). Taxis are also an option, and they can take you from the airport to downtown in about an hour. As an alternative, the airport offers automobile rental services.

  • What is the cheapest flight from Denver to Seoul?

    In the last 5 days, the lowest price for a flight from Denver to Seoul was $372 for a one-way ticket and $844 for a round-trip.

  • Do I need a passport to fly between Denver and Seoul?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Denver and on arrival in Seoul.

  • Which airports will I be using when flying from Denver to Seoul?

    When flying out of Denver you will be using Denver Intl. You will be landing at one of these airports: Seoul Gimpo Intl or Incheon Intl.

  • Which aircraft models fly most regularly from Denver to Seoul?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Denver to Seoul?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Denver and Seoul, with oneworld being the most commonly used for this route.

  • What is the most popular layover when flying to Seoul from Denver?

    Vancouver is the most popular layover city among KAYAK users traveling from Denver to Seoul.

  • Which is the best airline for flights from Denver to Seoul, Korean Air or Asiana Airlines?

    The two airlines most popular with KAYAK users for flights from Denver to Seoul are Korean Air and Asiana Airlines. With an average price for the route of $1,089 and an overall rating of 8.4, Korean Air is the most popular choice. Asiana Airlines is also a great choice for the route, with an average price of $1,381 and an overall rating of 8.1.

  • How does KAYAK find such low prices on flights from Denver to Seoul?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to Seoul.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Seoul?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seoul from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to Seoul?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seoul with an airline and back to Denver with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Seoul?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seoul from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Denver to Seoul

  • Denver International Airport (DEN) serves as a hub for United Airlines, giving passengers who choose to fly United access to various flights, discounts, and perks.
  • United Airlines passengers can look forward to first-class comforts, including lie-flat seats, a wide selection of meal options, noise-canceling headphones, and high-speed Wi-Fi when traveling from Denver to Seoul. Alcoholic beverages, admission to the United Club, and pre-departure lounge amenities are all complimentary for First and Business class passengers.
  • Unaccompanied minors ages 8 to 16 are welcome on United Airlines flights from Denver to Seoul. Unaccompanied Minor Form completion and presentation of a legitimate photo ID are requirements for guardians of unaccompanied youngsters. In addition, United Airlines offers supplementary choices, including meet-and-greet services and unaccompanied minor notifications for added protection.
  • Delta Airlines offers the most accommodating pet policy for flights from Denver to Seoul. While they accept larger animals as cargo, they allow small cats and dogs to ride in the cabin. All dogs must be reserved at least 48 hours before, and an international health certificate is required. The carrier should not exceed 18 x 11 x 11 inches, must be leakproof and covered, and should provide enough comfort for the animal.
  • On flights from Denver to Seoul, United Airlines permits each passenger to bring one personal item and one regular carry-on bag. The carry-on bag can have a maximum size of 9 x 14 x 22 inches. There can be at most 40 lb per item.

Reviews of the top 5 airlines serving from Denver to Seoul

 
See real verified KAYAK customer reviews for airlines flying from Denver to Seoul. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to Seoul? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
Korean AirOverall score based on 1218 reviews
8.2Entertainment
8.3Comfort
8.1Food
8.5Boarding
8.7Crew
Airline reviews

Always on time and flight crew were great. Boarding in Manila was a bit chaotic and disorganized compared to Incheon.

10.0 ExcellentOmer, Mar 2026
MNL - ICN
Read more Korean Air reviews

Always on time and flight crew were great. Boarding in Manila was a bit chaotic and disorganized compared to Incheon.

Never had a flight delay issue with Korean Air, that's why I always go with this airline.

Flight crew were very attentive and made this trip a pleasure. Plus the fact that this our first time flying business class.

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

Korean are so racist and when I ask question or directions they totally ignore me and say racist. Also they give me an rude attitude.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

I normally love Korean Air, but this trip was not great. We boarded the plan and were settling into our seats. My son and I use these leg swings and we used it on the trip over to Cambodia, but on the way back the flight attendant very rudely told us we could not use it and that it was against regulations. I asked to see the regulation, but never saw it. The food on this trip was horrible as well, Even my son's kids meal was disgusting so we didn't eat anything on the flight. Thankfully we brought snacks. Entertainment - what happened to the games?

This was an amazing flight. The crew was great. The service was great. The food provided was great.

Humm, I should have known that the seat I peaked on my flight from Inchon to Manila was designed for a toddler or very small person.

The staff hold my luggage to steel and exchange my stub, i was very disappointed.

Kayak along with airfare assay are attempting to steal my money. Charges are being pressed.

Customer service and attention to details. The food was good.

Felt like the oldest plane in Asiana Fleet. Screen was 5-6in only and no charging at all. Movie selection wasn't great.

I’d have rated Asiana good except an unfortunate incident in which I felt one of your employee didn’t really help us. During the first leg of the trip, the flight from LAX to ICN, I left my backpack on the plane. When I realized, I reported to one of your employee who promised me that it’d be taken care of, that my backpack will be there at HCM city. When we arrived there, HCM people had no idea and my backpack was still at Incheon airport who denied any knowledge whatsoever. I was left in the cold and felt helpless. I was very disappointed. I’d like someone to look into this and let me know.

It was my first time flying Asiana but i was very pleased with how professional and understanding the flight crew is with little kids. One flight attendant held my 3 year old daughter’s hand guiding her to the exit after landing while i had my hands full with luggage and my infant. She was very helpful.

The customer service was excellent. They noticed that our connecting flight was scheduled too closely for us to complete customs, so they changed the flight. Our initial flight was delayed, and they were able to get us on another flight, all without charging us any additional fees. I would fly them again anytime!

Better screens, it would have been nice to have more comfortable seats.

2nd major delay due to maintenance issues. 1st delay missed my connecting flight.

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

Long story short, it was one of the better flight experiences I've had in some time when compared with other airlines.

Flight was great! This flight from Atlanta was even better than when I paid for Comfort from SNA to Atlanta.

Connection flights should be spaced out farther because too close I missed my connection.

Definitely a southern flavor. Cordiality was evident even though no drinks or snacks were served.

On time! There were plenty of airport employees who were able to keep us moving in the right direction. The crew on the plane were professional.

Left /arrived on time. Decent seat space. Like the wifi/plugs and entertainment. Windows and tray table were kinda gross. Attendants didn't start snack service til 40mins before landing. Two rows before us, captain came on to say there's turbulence and recalled staff to seats. So, no drink/snack. Later, attendants didn't stop to see if we had trash nor even look our way. Felt invisible! Almost all pilot announcements were not only unintelligible, but so quiet. We had no idea what she said.

Average seat comfort, a drink and chips were provided, early boarding because we checked a carryon at the gate was nice. Ticket pricing shenanigans, including fees to pick a seat, check a bag, and get food onboard - evidence the industry is reinvigorating last century’s strategies- destroys the experience before one ever arrives at the airport. It’s difficult to recognize any value or sustain loyalty in the end-to-end process making air travel more drudgery than pleasure.

Gate agent was unhelpful for handicapped boarding. Flight attendant seemed untrained.

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

It was a short flight so I was expecting too much

Had a one hour delay due to mechanical issue. I didn’t think I’d be able to make my connecting flight, but they waited for me and greeted me when I arrived to help things run smooth.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

Really hard landing... as in slammed into the runway then hit the brakes really hard ...

Putting people that close to the bathroom, where you have to look into the bathroom as people are exiting and entering was not great and the smell was also not great. I know the airlines are desperate for more chairs, but that seat is a crime.

Every staff member was professional, friendly and courteous. The pizza twist was ok. It was warm but too much dough.

one staffer was frustrated (it happen); the flight was late and the pilot mentioned they'll make amend but the snacks were the same, other than that the aircraft was clean and everything went smooth, no complaints

It was a short flight so, everything went smoothly and we got to where we needed to be safely.

Didn’t make it on the flight. Delayed then had to be rebooked, which in turn had me waiting at the airport for another 8 hours before next flight

No TV on the flight. The charging outlet was not working. No food, even a sandwich. The served orange was poor quality.

Selected seats 5 months prior to date. Had email confirmation and seats were not honoured. Family did not sit together

Loved and was pleasantly surprised by the food!! Request Lufthansa to help transiting passengers at Munich (confusion whether to go thru passport control or not).

The flight was comfortable and the staff were helpful and friendly. However, we did not know we were flying PAL until we arrived in Canada, so it was a bit disconcerting. In addition, which port we were leaving from was confusing.

They did not let us board because one member needed a transit visa, which was not evident at the time of ticket purchase.

I was charge a baggage checking fee $68!! I volunteered to check my duffle bag which usually goes under my seat!

I did not like anything because the flight was cancelled yesterday and I did not get to arrive on time in Toronto as I was rebooked with another airline. This caused me to be really stressed out as I am an individual with back injury and to be forced to stay longer in an airport to accommodate a change of airline and the transfers associated with it Due to this I am probably not going to book through your website to eliminate this potentially chaos in the future

shittiest airline in the hemisphere. To improve - start thinking you're flying people, not cattle

Everything you need to know for your flight from Denver to Seoul

Information on your arrival and departure airports