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Cheap flights from Incheon Intl (ICN) to St. Louis (STL) from $591

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/17. 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.
ICN — STL
May 14 — May 211
From?
To?
Tue 5/14
Tue 5/21
1 adult, Economy
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The best prices from Incheon Intl to Lambert-St Louis are usually found in October or February, booked 68 days in advance, depart on a Thursday or Monday and return on a Wednesday

Cheap flight deals from Incheon Intl to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Incheon Intl (ICN) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 9, 2024.

Popular in

August

Cheapest in

October

Average price

$1,403

Round-trip from

$322
High demand for flights, 43% potential price rise
Search Deals
Best time to find cheap flights, 33% potential price drop
Search Deals
Average for round-trip flights in May 2024
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From Incheon Intl to Lambert-St Louis
Search Deals

What is the cheapest day to fly round-trip from Incheon Intl Airport to St. Louis?

Users have found that leaving on a Wednesday can be a cost-effective option. It’s possible to save up to 48% on your flight compared to booking on days when demand is much higher.

What is the cheapest month to fly from Incheon Intl Airport to St. Louis?

Due to multiple factors, expect to potentially pay more when booking in May. For low rates, March can be a great choice for travel to St. Louis. Flights to St. Louis from Incheon Intl Airport in March are about $1,620 on average during March, but can be found for as low as $1,359.

When is the cheapest time to fly from Incheon Intl Airport to St. Louis (ICN - STL)?

It’s optimal to fly from Incheon Intl Airport to St. Louis at noon. By choosing this option you can save up to 13% on the cost of your flight, compared to a flight in the afternoon.

Cheap Air Canada flights from Incheon Intl to St. Louis

Explore cheap flight options specifically provided by Air Canada for the route between Incheon Intl and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,717,708 searches. Data last updated May 9, 2024.
Peruse some of the lowest-priced Air Canada flights we've found from Seoul to St. Louis. Make sure to check back often as deals are often changing.
Sun 6/236:00 pmICN - STL
2 stops35h 21mAir Canada
Tue 8/204:05 pmSTL - ICN
2 stops34h 00mAir Canada
Deal found 5/7$1,325
Tue 7/96:00 pmICN - STL
2 stops35h 21mAir Canada
Tue 7/234:05 pmSTL - ICN
2 stops34h 00mAir Canada
Deal found 5/9$1,369
Mon 7/296:00 pmICN - STL
2 stops35h 21mAir Canada
Wed 8/1412:00 pmSTL - ICN
2 stops38h 05mAir Canada
Deal found 5/9$1,484
Fri 9/206:00 pmICN - STL
2 stops35h 20mAir Canada
Sat 9/284:05 pmSTL - ICN
2 stops34h 00mAir Canada
Deal found 5/8$1,520
Wed 7/176:00 pmICN - STL
2 stops40h 01mAir Canada
Wed 4/304:10 pmSTL - ICN
2 stops33h 55mAir Canada
Deal found 5/8$1,528
Mon 7/156:00 pmICN - STL
2 stops35h 21mAir Canada
Wed 8/1412:00 pmSTL - ICN
2 stops38h 05mAir Canada
Deal found 5/9$1,530
Wed 9/46:00 pmICN - STL
2 stops35h 20mAir Canada
Thu 9/124:05 pmSTL - ICN
2 stops34h 00mAir Canada
Deal found 5/9$1,536
Mon 7/156:00 pmICN - STL
2 stops35h 21mAir Canada
Wed 8/1412:00 pmSTL - ICN
1 stop38h 25mAir Canada
Deal found 5/9$1,552
Tue 7/166:00 pmICN - STL
2 stops40h 01mAir Canada
Sun 7/2112:00 pmSTL - ICN
1 stop38h 25mAir Canada
Deal found 5/9$1,581

Cheap Delta flights from Incheon Intl to St. Louis

Explore cheap flight options specifically provided by Delta for the route between Incheon Intl and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,717,708 searches. Data last updated May 9, 2024.
Some of the lowest-priced Delta flights we've found at this time heading from Seoul to St. Louis. Check back soon if you're not seeing flights that suit your needs.
Fri 10/117:40 pmICN - STL
1 stop28h 10mDelta
Tue 10/156:30 amSTL - ICN
1 stop18h 50mDelta
Deal found 5/8$1,188
Fri 10/117:20 pmICN - STL
2 stops31h 56mDelta
Tue 10/153:30 pmSTL - ICN
1 stop33h 50mDelta
Deal found 5/7$1,193
Fri 10/1110:35 amICN - STL
2 stops21h 24mDelta
Tue 10/156:00 amSTL - ICN
2 stops21h 20mDelta
Deal found 5/8$1,233
Fri 10/1110:35 amICN - STL
2 stops21h 24mDelta
Tue 10/157:10 amSTL - ICN
2 stops20h 10mDelta
Deal found 5/7$1,239
Sun 6/237:40 pmICN - STL
1 stop16h 15mDelta
Tue 8/206:30 amSTL - ICN
2 stops20h 00mDelta
Deal found 5/7$1,562

Cheap Incheon Intl to St. Louis flights in May & June 2024

Find cheap flight options from Incheon Intl to St. Louis specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,717,708 searches. Prices were last updated on May 9, 2024.
Listed are some of the best fares we've found on flights departing from Seoul to St. Louis in 2024. More deals are always being added, so be sure to check back regularly.
Sun 6/236:00 pmICN - STL
2 stops35h 21mAir Canada
Tue 8/204:05 pmSTL - ICN
2 stops34h 00mAir Canada
Deal found 5/7$1,325
Wed 6/1211:40 amICN - STL
2 stops42h 01mLufthansa
Mon 6/175:31 pmSTL - ICN
2 stops50h 24mLufthansa
Deal found 5/8$1,426
Sun 6/237:40 pmICN - STL
1 stop16h 15mMultiple Airlines
Tue 8/206:30 amSTL - ICN
1 stop18h 50mMultiple Airlines
Deal found 5/7$1,471
Sun 6/237:40 pmICN - STL
1 stop16h 15mDelta
Tue 8/206:30 amSTL - ICN
2 stops20h 00mDelta
Deal found 5/7$1,562
Fri 5/106:00 pmICN - STL
2 stops35h 21mAir Canada
Sat 5/184:05 pmSTL - ICN
2 stops34h 00mAir Canada
Deal found 5/8$1,581
Fri 6/76:15 pmICN - STL
1 stop38h 26mMultiple Airlines
Thu 6/132:21 pmSTL - ICN
1 stop37h 24mMultiple Airlines
Deal found 5/8$1,627
Fri 6/76:15 pmICN - STL
1 stop38h 26mMultiple Airlines
Thu 6/137:32 pmSTL - ICN
1 stop32h 13mMultiple Airlines
Deal found 5/8$1,656
Sun 6/27:40 pmICN - STL
1 stop16h 12mKorean Air
Sat 6/86:06 amSTL - ICN
1 stop19h 14mKorean Air
Deal found 5/8$1,729
Fri 5/106:00 pmICN - STL
2 stops35h 21mAir Canada
Mon 5/1311:00 amSTL - ICN
2 stops40h 30mAir Canada
Deal found 5/9$1,745

Incheon Intl to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Incheon Intl and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,717,708 searches. Data last updated May 9, 2024.
Listed are some of the best fares we've found on flights departing from Seoul to St. Louis in 2024. More deals are always being added, so be sure to check back regularly.
Fri 10/117:40 pmICN - STL
1 stop28h 10mDelta
Tue 10/156:30 amSTL - ICN
1 stop18h 50mDelta
Deal found 5/8$1,188
Mon 12/166:30 pmICN - STL
1 stop30h 20mDelta
Wed 1/153:30 pmSTL - ICN
1 stop33h 00mDelta
Deal found 5/8$1,193
Fri 10/1110:35 amICN - STL
2 stops21h 24mDelta
Tue 10/156:00 amSTL - ICN
2 stops21h 20mDelta
Deal found 5/8$1,233
Fri 10/1110:35 amICN - STL
2 stops21h 24mDelta
Tue 10/157:10 amSTL - ICN
2 stops20h 10mDelta
Deal found 5/7$1,239
Sun 6/236:00 pmICN - STL
2 stops35h 21mAir Canada
Tue 8/204:05 pmSTL - ICN
2 stops34h 00mAir Canada
Deal found 5/7$1,325
Thu 9/1910:35 amICN - STL
1 stop16h 33mKorean Air
Sat 9/286:30 amSTL - ICN
1 stop18h 50mKorean Air
Deal found 5/8$1,339
Fri 9/2010:35 amICN - STL
1 stop16h 33mKorean Air
Sat 9/2810:10 amSTL - ICN
1 stop17h 10mKorean Air
Deal found 5/8$1,362
Tue 7/1611:30 amICN - STL
2 stops24h 41mUnited Airlines
Sun 7/215:30 pmSTL - ICN
2 stops31h 30mUnited Airlines
Deal found 5/9$1,418
Wed 6/1211:40 amICN - STL
2 stops42h 01mLufthansa
Mon 6/175:31 pmSTL - ICN
2 stops50h 24mLufthansa
Deal found 5/8$1,426

One-way flights to St. Louis from Incheon Intl

Search for one-way flight options from Incheon Intl to St. Louis. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,717,708 searches. Data last updated May 9, 2024.
Take a look at some of the best available options we've come across on one-way flights from Seoul to St. Louis. For those needing a return trip from Seoul, there is a search form available above.
Fri 5/171:40 pmICN - STL
3 stops33h 39mMultiple Airlines
Deal found 5/8$591
Fri 5/175:30 pmICN - STL
2 stops29h 49mMultiple Airlines
Deal found 5/8$711
Tue 7/23:00 pmICN - STL
3 stops58h 14mMultiple Airlines
Deal found 5/8$751
Wed 7/1012:55 pmICN - STL
3 stops49h 04mMultiple Airlines
Deal found 5/8$791
Fri 6/219:30 pmICN - STL
2 stops33h 58mMultiple Airlines
Deal found 5/8$837
Fri 5/177:40 pmICN - STL
1 stop16h 12mKorean Air
Deal found 5/8$936
Fri 5/177:20 pmICN - STL
1 stop18h 39mMultiple Airlines
Deal found 5/8$1,013
Wed 7/109:25 pmICN - STL
2 stops37h 14mMultiple Airlines
Deal found 5/8$1,074
Fri 6/217:20 pmICN - STL
1 stop18h 39mMultiple Airlines
Deal found 5/8$1,108

Find flights from Incheon Intl to St. Louis within your budget

Customize your flight search to find flights from Incheon Intl to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,717,708 searches. Data last updated May 9, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,188 - $1,952

Route

Depart

Return

Price

Incheon IntlLambert-St Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 10/11

1 stop28h 10m

Lambert-St Louis

Tue 10/15

1 stop18h 50m

$1,188

Incheon IntlLambert-St Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 10/11

2 stops31h 56m

Lambert-St Louis

Tue 10/15

1 stop33h 50m

$1,193

Incheon IntlLambert-St Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 10/11

2 stops21h 24m

Lambert-St Louis

Tue 10/15

2 stops21h 20m

$1,233

Incheon IntlLambert-St Louis

ICN - STL

ICNSTL

Incheon Intl

Sun 6/23

2 stops35h 21m

Lambert-St Louis

Tue 8/20

2 stops34h 00m

$1,325

Incheon IntlLambert-St Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 9/19

1 stop16h 33m

Lambert-St Louis

Sat 9/28

1 stop18h 50m

$1,339

Incheon IntlLambert-St Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 7/16

2 stops24h 41m

Lambert-St Louis

Sun 7/21

2 stops31h 30m

$1,418

Incheon IntlLambert-St Louis

ICN - STL

ICNSTL

Incheon Intl

Wed 6/12

2 stops42h 01m

Lambert-St Louis

Mon 6/17

2 stops50h 24m

$1,426

Incheon IntlLambert-St Louis

ICN - STL

ICNSTL

Incheon Intl

Sun 6/23

1 stop16h 15m

Lambert-St Louis

Tue 8/20

1 stop18h 50m

$1,471

Incheon IntlLambert-St Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 6/11

2 stops45h 47m

Lambert-St Louis

Mon 6/17

2 stops34h 47m

$1,952

Flights are sorted by cheapest first

Deals found on 5/8

When is the best time to book a flight from Incheon Intl Airport to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Incheon Intl to St. Louis. Price data was last updated on May 3, 2024.
The best time to book flights from Incheon Intl Airport to St. Louis is 67 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Search Deals

When is the cheapest time to fly from Incheon Intl Airport to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Incheon Intl to St. Louis. Price data was last updated on May 5, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Incheon Intl Airport to St. Louis flight should consider departing on Thursday afternoons when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to St. Louis by month

Plan your trip from Incheon Intl to St. Louis by taking into account the cheapest months to travel. The average price of a one-way flight from Incheon Intl to St. Louis is currently $868 while a round-trip flight costs $1,394. Price data was last updated on May 5, 2024.

Currently, September is the cheapest month in which you can book a flight from Incheon Intl Airport to St. Louis (average of $322). Flying from Incheon Intl Airport to St. Louis in July is currently the most expensive (average of $372). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$326

February

$331

March

$357

April

$337

May

$342

June

$369

July

$372

August

$336

September

$322

October

$324

November

$336

December

$326

Temperature and rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature and rainfall totals by month.

STL

Temperature

32 - 80.6 °F

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated May 9, 2024.
Read through reviews of airlines operating flights from Seoul to St. Louis, such as Air Canada, Delta and Qatar Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.5
Very good
1,181 reviews
Check prices

Comfort

8.3

Food

8.2

Overall

8.5

Crew

8.8

Boarding

8.6

Entertainment

8.2

Reviews

1 / 10

Airbus is more safer, crews are friendly and food is nice.

Korean Air
8.5
Very good
1,181 reviews
Korean Air
8.5
Very good
1,181 reviews
Check prices

Comfort

8.3

Food

8.2

Overall

8.5

Crew

8.8

Boarding

8.6

Entertainment

8.2

Reviews

1 / 10

Airbus is more safer, crews are friendly and food is nice.

Delta
8.0
Very good
10,778 reviews
Korean Air
8.5
Very good
1,181 reviews
Check prices

Comfort

8.3

Food

8.2

Overall

8.5

Crew

8.8

Boarding

8.6

Entertainment

8.2

Reviews

1 / 10

Airbus is more safer, crews are friendly and food is nice.

KLM
7.9
Good
1,590 reviews
Korean Air
8.5
Very good
1,181 reviews
Check prices

Comfort

8.3

Food

8.2

Overall

8.5

Crew

8.8

Boarding

8.6

Entertainment

8.2

Reviews

1 / 10

Airbus is more safer, crews are friendly and food is nice.

Qatar Airways
7.7
Good
4,424 reviews
Korean Air
8.5
Very good
1,181 reviews
Check prices

Comfort

8.3

Food

8.2

Overall

8.5

Crew

8.8

Boarding

8.6

Entertainment

8.2

Reviews

1 / 10

Airbus is more safer, crews are friendly and food is nice.

WestJet
7.6
Good
2,942 reviews
Korean Air
8.5
Very good
1,181 reviews
Check prices

Comfort

8.3

Food

8.2

Overall

8.5

Crew

8.8

Boarding

8.6

Entertainment

8.2

Reviews

1 / 10

Airbus is more safer, crews are friendly and food is nice.

Related info for your journey

Find useful and relevant information for your journey from Incheon Intl to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to St. Louis from Incheon Intl?

    Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Incheon Intl. On average, Lambert-St Louis has 0 inbound flights from Incheon Intl per day from 3 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • Can I find flights from Incheon Intl Airport to St. Louis for under $1,200 on Cheapflights?

    Yes, there are multiple flights from Incheon Intl Airport to St. Louis for under $1,200. The cheapest flight booked recently is on Delta for just $1,188, but on average you can expect to pay $1,413.

  • What are the cheapest airlines flying from Incheon Intl Airport to St. Louis round-trip?

    Flying on Delta is currently your cheapest option to St. Louis, with prices starting at $1,188. Additional round-trip tickets that might be worth considering are offered by Air Canada and Korean Air, with the lowest prices starting at $1,325 and $1,339, respectively. These flights start at 28% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Incheon Intl Airport to St. Louis one-way?

    The cheapest airline one-way is Korean Air, with whom users have recently found tickets for as low as $936. However, be on the lookout for offers from WestJet and Qatar Airways, as they are both options that can get you from Incheon Intl Airport to St. Louis for a low price.

  • What are the most popular airlines that fly from Incheon Intl Airport to St. Louis?

    The most popular airlines flying from Incheon Intl Airport to St. Louis are American Airlines, Delta and Korean Air. Something to consider prior to booking your flight.

  • What does ICN to STL mean?

    ICN stands for Incheon Intl Airport, while STL stands for Lambert-St Louis Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

  • Can I find deals for flights from Incheon Intl to St. Louis that include extra baggage allowance?

    The amount of baggage you can bring on your Incheon Intl to St. Louis flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Incheon Intl to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter Incheon Intl to St. Louis flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Incheon Intl to St. Louis that include hotel bookings?

    Yes. In addition to deals on Incheon Intl to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Incheon Intl to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Incheon Intl to St. Louis.

  • Can I find deals for business class flights from Incheon Intl to St. Louis?

    Yes. Cheapflights offers flight deals from Incheon Intl to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Incheon Intl to St. Louis that allow pets onboard?

    Many airlines flying from Incheon Intl to St. Louis offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Incheon Intl to St. Louis?

    Yes, you can often find last-minute deals on Incheon Intl to St. Louis flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Incheon Intl Airport to St. Louis flight deals updated?

    The Incheon Intl Airport to St. Louis flight deals you see on this page were last updated on 5/9.

See more FAQs

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Alternative routes for Incheon Intl to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.

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Top 3 airlines flying from Incheon Intl to St. Louis

Discover the top 3 airlines that operate flights from Incheon Intl to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,717,708 searches. Data last updated May 9, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$896Average$1,031FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapest$1,221Average$1,408FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Korean AirCheapest$1,291Average$1,482FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
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Search flights from Incheon Intl to St. Louis by cabin class

Find flights from Incheon Intl to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Incheon Intl to St. Louis?

When you search for this flight from Incheon Intl to St. Louis, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Incheon Intl to St. Louis?

Cheapflights simply makes it quick and affordable to book flights from Incheon Intl to St. Louis by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Incheon Intl to St. Louis with no change fees?

Yes, we can. To see specific flights from Incheon Intl to St. Louis with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Incheon Intl to St. Louis become cheaper?

Yes, Cheapflights offers price alerts on Incheon Intl to St. Louis flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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