$365 Find Cheap Flights from Seoul 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 Seoul to Colorado departing on 5/18. 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.
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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 Seoul to Colorado.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seoul to Colorado.
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Cheap Flight Deals from Seoul to Colorado (SEL-USCO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seoul 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.

Recent round-trip flight deals from Seoul to Colorado

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Seoul to Colorado.
Discover the best prices for you by selecting your travel dates on KAYAK.
United Airlines Logo
4:50 pm - 4:35 pmICN-DEN
14h 45m1 stop
United Airlines Logo
10:09 am - 4:20 amDEN-ICN
27h 11m1 stop
$720United Airlines
Find Deal
Mon, Sep 15 - Fri, Sep 19
United Airlines Logo
11:30 am - 10:29 pmICN-DEN
25h 59m2 stops
United Airlines Logo
8:00 am - 4:20 amDEN-ICN
29h 20m2 stops
$723United Airlines
Find Deal
Mon, May 26 - Thu, Jul 31
Air Canada Logo
5:45 pm - 9:23 pmICN-DEN
18h 38m1 stop
Air Canada Logo
7:52 am - 4:05 pmDEN-ICN
17h 13m1 stop
$798Air Canada
Find Deal
Mon, Sep 8 - Fri, Sep 12
Delta Logo
7:20 pm - 9:47 pmICN-DEN
17h 27m1 stop
Delta Logo
7:05 am - 4:40 pmDEN-ICN
18h 35m2 stops
$809Delta
Find Deal
Mon, Jun 2 - Thu, Jun 5
Delta Logo
6:40 pm - 8:06 amICN-DEN
28h 26m1 stop
Delta Logo
7:45 am - 4:40 pmDEN-ICN
17h 55m1 stop
$812Delta
Find Deal
Thu, May 22 - Tue, May 27
Korean Air Logo
4:40 pm - 5:57 pmICN-DEN
16h 17m1 stop
Korean Air Logo
7:45 am - 4:30 pmDEN-ICN
17h 45m1 stop
$861Korean Air
Find Deal
Sat, May 10 - Wed, May 14
Korean Air Logo
4:40 pm - 5:57 pmICN-DEN
16h 17m1 stop
Korean Air Logo
7:45 am - 4:40 pmDEN-ICN
17h 55m1 stop
$864Korean Air
Find Deal
Sat, May 10 - Wed, May 14
Air Canada Logo
5:45 pm - 8:43 amICN-DEN
29h 58m2 stops
Air Canada Logo
7:52 am - 4:05 pmDEN-ICN
17h 13m1 stop
$894Air Canada
Find Deal
Mon, Oct 20 - Fri, Oct 24
American Airlines Logo
5:25 pm - 11:33 pmICN-DEN
21h 08m2 stops
American Airlines Logo
4:51 pm - 3:30 pmDEN-ICN
31h 39m1 stop
$986American Airlines
Find Deal
Wed, Jun 4 - Sat, Jun 14
American Airlines Logo
5:25 pm - 8:22 amICN-DEN
29h 57m2 stops
American Airlines Logo
11:59 pm - 3:30 pmDEN-ICN
24h 31m2 stops
$1,030American Airlines
Find Deal
Sat, Aug 2 - Fri, Aug 15
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KAYAK's insights & trends for Seoul to Colorado flights

Get data-powered insights and trends into flights from Seoul 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 Seoul to Colorado?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seoul 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 Seoul to Colorado is March, when tickets cost $889 (return) on average. On the other hand, the most expensive months are August and June, when the average cost of round-trip tickets is $1,560 and $1,555 respectively.

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

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

If you are looking for a flight deal from Seoul to Colorado, look for departures on Sundays and avoid leaving on a Tuesday, as it's usually the priciest day. When flying back from Colorado, Wednesday is the cheapest day to fly and Saturday is the most expensive.

How far in advance should I book a flight from Seoul 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 Seoul 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 Seoul to Colorado, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.


Good to know

Low seasonJanuary
High seasonMay
Cheapest flight$365
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Incheon to Denver

FAQs - booking Colorado flights

  • How does KAYAK find such low prices on flights from Seoul 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 to Colorado.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Seoul 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 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 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 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 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.

Top 5 airlines serving from Seoul to Colorado

 
See real verified KAYAK customer reviews for airlines flying from Seoul 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 Seoul 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 1066 reviews
8.5Boarding
8.1Food
8.3Comfort
8.2Entertainment
8.7Crew
Airline reviews

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

8.0 ExcellentEdward, Apr 2025ICN - LAS
Read more Korean Air reviews

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

My second flight wasn't better than the first one. And this is 14 hours trip, crew came out only to offer food and the choices was poor. This food choices are good for Asian people but not for westerners. The breakfast kind thing was a corn sausage really disgusting. The air-conditioned blower really blow high and cold, turn out on my arrival to feel seek, that makes the trip uncomfortable. The crew didn't not really come out during the trip to offer drinks or snacks. No fruits available. Very poor service

Our seat row plus one ahead and behind we're completely overlooked during beverage service...

Fine except the person next to me took up her seat had raised the arm divide so she spilled into my seat. because of her size. Fortunately no one was in the seat on my right so I could use part of it.

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

Delta is a cut above the others in customer service.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

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.

The reason I don’t fly United. No in seat entertainment for a long flight and inconsistent WiFi and entertainment available from my device.

It was 4 hours late. Almost missed my connecting flight no food or drinks on connecting flight. Overall terrible experience

My experience was medium staff where great I dislike flying in triple 7 seats very uncomfortable and no room on jet all the rest of the flights where great

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

Paid $35 and not able to access the internet at all.

Several delays. Next flight was worse. Did not arrive home until 2am PT

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

We missed our flight. The boarding pass had the wrong gate and by the time we received the text from Kayak, our flight was already gone. I’ll never use Kayak again and will go direct to the airlines in the future.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Cabin felt crammed Snacks are lame But crew was super efficient getting us out on time despite delay

Flight was delayed bc of mechanical issue. New plane had different configuration so some seats had to be switched. They called all passengers who needed new boarding cards. They did not call us so we thought our seats were the same and fine. When we boarded they informed us our receipts had changed and we are now all sitting separate and in the back row. Both my daughters had meltdowns and started to cry and once we got on the flight, we figured out how we could sit closer to each other, but this was very upsetting.

Took off on time and successfully avoided weather that looked to be a problem along the way

My flight got delayed 5 times and then got cancelled eventually, I had to get a hotel and uber and pay for food for an extra night without any plans. It was a horrible experience, instead of Air Canada, I was flying with United .

I had a nice flight with free wifi. So I was able to message family members and stream music during my flight, which made the trip go by fast. I also enjoyed flying on there Airbus A220. The plane looked very new and it also got up to speed fast down the runway and didn't need much runway to get airborne.

Short flight so no food or entertainment. Good landing at SFO and on time. We were told no carryon luggage yet lots of people were puting bags in overhead compartments. The rules need to be made more clear. I was on the first leg of an international flight and this is the first time I could not have carryon luggage.

My flight was overbooked and they would not let me board. I had to book another flight and pay the full amount of that flight. I did not get any help at all from Air Canada or United Airlines.

Comfortable seats and movies entertainment available. Better experience than the flight from Toronto to Denver.

Overall good experience. The flight from Toronto to Denver does not have entertainment - movies to watch.

Very nice. Cabin crew is very attentive and professional. So nice!

There is not enough space between two chairs and raws.

Not allowing food choice through app. Very hard to find,

Everything was made rather simple, so I appreciate that. All the people I dealt with from entering the airport in Jacksonville to my lonnnnnnng walk to my next gate in Chicago were excellent and very helpful.

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

Cabin class types available on flights to Colorado

Cabin classes available on flights to Colorado. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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