$408 Find Cheap Flights from Seoul Incheon Airport to Colorado

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Incheon Intl to Colorado departing on 7/8. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Incheon to Colorado.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Incheon to Colorado.
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Best Colorado Flight Deals from Incheon Intl

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Denver
Denver1 stop$747
Denver
Denver1 stop$747

Cheap Flights from Incheon Intl to Colorado

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Incheon Intl to Colorado 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 Incheon Intl to Colorado

Fri, Aug 29 - Fri, Sep 12
 Logo
12:45 pm - 11:34 amICN-DEN
37h 49m1 stop
 Logo
6:30 am - 3:45 pmDEN-ICN
18h 15m1 stop
Wed, Aug 27 - Wed, Sep 17
Delta Logo
6:40 pm - 11:09 pmICN-DEN
19h 29m1 stop
Delta Logo
5:30 am - 5:20 pmDEN-ICN
20h 50m2 stops
$751Delta
Find Deal
Mon, Sep 15 - Wed, Oct 15
American Airlines Logo
5:25 pm - 8:00 pmICN-DEN
17h 35m1 stop
American Airlines Logo
6:14 am - 3:30 pmDEN-ICN
18h 16m1 stop
$763American Airlines
Find Deal
Fri, Aug 29 - Fri, Sep 12
United Airlines Logo
4:50 pm - 11:30 pmICN-DEN
21h 40m2 stops
United Airlines Logo
11:18 am - 4:20 amDEN-ICN
26h 02m2 stops
$769United Airlines
Find Deal
Mon, Sep 15 - Wed, Oct 15
United Airlines Logo
11:30 am - 3:00 pmICN-DEN
18h 30m1 stop
United Airlines Logo
11:25 am - 4:20 amDEN-ICN
25h 55m2 stops
$772United Airlines
Find Deal
Thu, Jul 17 - Thu, Jul 31
Korean Air Logo
7:40 pm - 7:55 pmICN-DEN
15h 15m1 stop
Korean Air Logo
7:15 pm - 4:30 amDEN-ICN
18h 15m1 stop
$822Korean Air
Find Deal
Tue, Jul 1 - Sun, Aug 31
Korean Air Logo
7:40 pm - 7:53 pmICN-DEN
15h 13m1 stop
Korean Air Logo
6:35 am - 4:30 pmDEN-ICN
18h 55m1 stop
$824Korean Air
Find Deal
Mon, Jul 21 - Tue, Aug 5
Air Canada Logo
5:45 pm - 6:18 pmICN-DEN
15h 33m1 stop
Air Canada Logo
7:50 am - 4:05 pmDEN-ICN
17h 15m1 stop
$855Air Canada
Find Deal
Mon, Jul 21 - Sat, Aug 2
Air Canada Logo
5:45 pm - 6:18 pmICN-DEN
15h 33m1 stop
Air Canada Logo
7:48 pm - 4:05 pmDEN-ICN
29h 17m1 stop
$858Air Canada
Find Deal
Wed, Oct 1 - Wed, Oct 22
American Airlines Logo
5:25 pm - 8:00 pmICN-DEN
17h 35m1 stop
American Airlines Logo
10:28 am - 3:30 pmDEN-ICN
38h 02m1 stop
$1,146American Airlines
Find Deal
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KAYAK's insights & trends for Incheon Intl to Colorado flights

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

What is the cheapest month to fly from Incheon Intl Airport to Colorado?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Incheon Intl Airport to Colorado, 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 Incheon Intl Airport to Colorado is November, when tickets cost $924 (return) on average. On the other hand, the most expensive months are August and January, when the average cost of round-trip tickets is $1,542 and $1,431 respectively.

What’s the cheapest day of the week to fly from Seoul Incheon Airport to Colorado?

The average price of all round-trip flights from Incheon Intl Airport to Colorado clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Colorado on a Sunday and more expensive on a Tuesday. On your return trip to Seoul Incheon Airport, you should consider flying back on a Wednesday, and avoid Saturdays for better deals.

How far in advance should I book a flight from Incheon Intl Airport to Colorado?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Incheon Intl Airport to Colorado, 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 Incheon Intl Airport to Colorado, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.


Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$408
Best time to beat the crowds but there is an average 26% increase in price.
Most popular time to fly with an average 24% increase in price.
Flight from Incheon to Denver

FAQs - booking Colorado flights

  • How does KAYAK find such low prices on flights from Seoul Incheon Airport to Colorado?

    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 Seoul Incheon Airport to Colorado.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Seoul Incheon Airport to Colorado 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 Seoul Incheon Airport to Colorado?

    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 from Seoul Incheon Airport to Colorado with an airline and back with another airline.

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

    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 from Seoul Incheon Airport to Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Colorado?

    The cheapest time of day to fly to Colorado is generally in the evening, when round-trip flights cost $1,032 on average. Morning departures are around 7% more expensive than evening flights, on average. The most expensive time of day to fly to Colorado is generally at night, which is peak travel time and where the average cost of a ticket is $1,439.

Reviews of the top 5 airlines serving from Incheon Intl to Colorado

 
See real verified KAYAK customer reviews for airlines flying from Incheon to Colorado. 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 Incheon Intl to Colorado? 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 1090 reviews
8.7Crew
8.2Entertainment
8.5Boarding
8.3Comfort
8.1Food
Airline reviews

This flight was a superior flight in all regards. Extremely pleasant experience.

10.0 ExcellentANTHONY JAMES, May 2025ICN - SGN
Read more Korean Air reviews

This flight was a superior flight in all regards. Extremely pleasant experience.

Korean Air is unlike any other major airline I have flown with. The grace and respect that the staff has from check in to de-boarding is unmatched. The flight attendants this time were especially wonderful to my five little children. They helped us rearrange to more suitable seating, brought our children’s meals, and patiently waited for them in the aisles when they had to use the bathroom. We felt so welcome and comfortable. I really appreciate the meal voucher when our flight was delayed. I am grateful to have had such an stress-free experience.

It's good overall. Flight was packed. Inflight entertainment choices were lacking.

They were very accommodating of a dietary issue. Nice movie & tv selections. Non-stop helped get through a very long (15 hr) flight

They did an excellent job helping me with a wheelchair. I couldn’t have asked for any better help.

Great except for the delay in Korea. Korean Air did a great job setting up a hotel for the night. I also needed assistance with a wheelchair and they were outstanding.

The flight was on time and very quick, as expected, but the leg room isn't great in coach seats.

The boarding process for Korean airlines is very straightforward and easy. You've never met such helpful and friendly people. The food was great and the entertainment options were excellent too. My teenage boys found programs they wanted to watch while I had fun watching a full season of the Last Man - the Blind Investigator (Japanese), which my wife enjoyed too. My only complaint was that it takes a very long time to taxi at ICN (20 minutes) and the pilot had to hold at the gate for 10 minutes after our scheduled departure time, which meant we got to Seattle 27 minutes late. Luckily I had a long enough connection to make my next flight, but just barely.

Best service I’ve ever had Flight attendants are nicely dressed and look very professional

Just a typical domestic poor flight nothing more. There is no food choices in such a flight. Crew doesn't really care if you are on-board or not

I like for how they process during check in. It was very smoothly.

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent check-in. Crew was good. Excellent communication from flight deck.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

Efficient, calm when things were delayed and kept us regularly informed of what was happening.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Plane temperature was comfortable (not to hot) when boarding and waiting for takeoff.

Food choices were very limited. Taste of the dishes was average.

I liked all the informational texts. I always knew where to go and when .

Not as good as expected Air Can needs to improve totally rated on internet as worst

Received an email the night before showing that there would be seatback entertainment on our flight. We get on and there was no seatback entertainment. And then it was a scramble to try to set up the iPads for the kids before takeoff so they could watch something for the four hour flight.

They cancelled my flight and downgraded me to economy and only gave me $250 for the downgrade

Loved the staff, boarding and drink options! Wish the comfort of the seat could have been better nevertheless

The flight crew were friendly and attentive. Food was good and they passed out ice cream and drinks awhile after Lunch was done. The ice cream was a nice treat! I found several movies to watch during the flight. There was many movies and tv shows to choose from. We flew Premium economy and there was enough leg room to be comfortable. The seats were also comfortable. I would fly AA again if the airfare isn’t expensive.

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

I’m impressed that we were on time in Sacramento after having a late departure in Newark and our made it. The staff was friendly and warm.

Cramped seats. FAA should make airlines have more legroom, for even short people complain

5.5 hour delay with no explanation on why, along with no proactive effort to reaccomodate me.

It was one of my worst flight ever. First they were changing the gate for at least 4 times, changing from gate D7 to D12 to D44. Considering the size of the Miami Airport, we are talking about long distance and the train at the airport was not working. Then the flight was delayed around one hour. Then finally we boarded into the plane and when everybody was seated, there was an announcement that there is an issue with one of the tire of the plane, so we all had to get out of the plane with our belongings, to replace the tire. So we had around 2.5-hour delay

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

Air Canada never runs on time. You’re lucky if your flight is not cancelled or diverted. Worst airline in the world for gas lighting its customers.

No space in overhead bin, one cookie, 2 oz of juice - is not customer service.

Good flight, friendly crew and overall - good service on United Airlines.

Received email saying that there won’t be a seat back entertainment screen and inflight WiFi would be available. But no WiFi both ways. Say it in the email.

Somebody either kayak or Air Canada booked my flight under my preferred name Betty instead of my legal name and I almost was denied boarding my flight

flight landed late almost 1.00hr and we 4 passengers missed our connected flight to indianapolis, we need to get the hotel and taxi for the next day flight to home in indianapolis, cost us $ 300 more

Or the greatest and it ended up picking us up from Chicago to Toronto not sure who was tesponsible for the 4 hr delay. United should have been properly prepared for a scheduled flight from Austin to Chicago and they were not.

Good, only discomfort was consistent turbulence through the 3 hour flight. Not sure if in companies control though.

The service was good ... I wondered if the stewardess was OK though as she seemed quite sad.

Terrible food, unprofessional flight attendants, and an uncomfortable seat. The food they provided was the worst I have ever had since I flew. They were worse than any cheap food you can get at convenience stores. A flight attendant talked to me in an insulting and demanding manner. If she wanted to say something, she should have said it professionally and kindly. No flight attendants served any drinks or snacks. If I needed a drink or snacks, I had to get up from my seat and go to the airplane's back area and serve myself. What were the flight attendants doing during their work shifts? A man sitting in front of me fully extended his chair to the back, so I had virtually no space to eat with reasonable comfort. Many people were so inconsiderate of others and fully extended their chairs to the back that they did not have enough space to eat. Flight attendants ignored these situations and never bothered to tell passengers to return their chairs to upright positions during the mealtime. I want to be comfortable and don't care if others feel uncomfortable because of me. Those were the dominant thoughts of people in that airplane. I paid more than $2000.00 for this terrible experience.

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