Are direct flights from St. Louis to Seoul always the best option?

Direct flights offer convenience by reducing travel time and avoiding layovers, but they are not always the most economical choice. Flights with one or more connections can sometimes be significantly cheaper. Consider your priorities for cost versus travel time.

Can flexible travel dates help on St. Louis to Seoul flights?

Yes, having flexible travel dates can often lead to finding more affordable flight options. Prices can vary greatly depending on the day of the week or specific dates. Adjusting your departure or return by even a few days may result in significant savings.

What extra costs should I check before booking St. Louis to Seoul flights?

Before booking, always check for potential extra costs such as baggage fees, seat selection charges, and in-flight services. Some airlines may also charge for printing boarding passes at the airport. Factor these into your total travel budget to avoid surprises.

Flights From St. Louis

To Seoul

Cheap Flights from St. Louis to Seoul

Browse current best options from St. Louis. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

St. Louis

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

Prices updated 1 day ago

402 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Jul 19, 2026.)

Today’s best flight deals from St. Louis to Seoul

Explore current cheapest deals departing from St. Louis to Seoul

Round trip

Sort by: Cheapest

September 23 - September 30

Cheapest

STL - Seoul

$825

$817

Round trip

September 17 - September 24

Cheapest

STL - Seoul

$825

$817

Round trip

September 6 - September 16

STL - Seoul

$783

$818

Round trip

November 24 - December 8

Best

STL - Seoul

$1,074

$819

Round trip

September 9 - September 24

STL - Seoul

$786

$819

Round trip

September 14 - September 28

STL - Seoul

$792

$828

Round trip

September 2 - September 9

STL - Seoul

$809

$832

Round trip

September 9 - September 21

STL - Seoul

$787

$832

Round trip

August 11 - August 23

Earliest

STL - Seoul

$1,114

$904

Round trip

August 12 - August 26

STL - Seoul

$1,116

$924

Round trip

Unlock all 500+ flight deals to Seoul and get alerts when great deals appear

St. Louis to Seoul: Overview

Insights for flights from St. Louis to Seoul

Right now, only 6% of recent fares from St. Louis to Seoul are classified as a good price, indicating that current pricing may not be optimal for travelers. Fares for this route typically range from $1267–$1420, with a median of $1321. Currently, prices are below the typical level, which could present an opportunity for travelers seeking cheap flights from St. Louis to Seoul.

When considering the cheapest time to fly from St. Louis to Seoul, January stands out as the most affordable month, with a median fare of $369. Following January, December also offers competitive pricing, with a median fare of $485. March is another relatively inexpensive option, showing a median fare of $527.

A typical journey from St. Louis to Seoul takes approximately 38h 54m, including connections. Given that most itineraries connect at least once, this duration reflects the overall travel time rather than a non-stop flight. Most itineraries on this route involve 2 stopovers.

This route covers a significant distance of 10740 km, classifying it as a long-haul journey. This means you can expect a substantial travel time, often involving multiple segments and layovers to reach your destination.

How much is a round trip from St. Louis to Seoul

Regular price: $718 - $1,523

Prices for flights from St. Louis to Seoul are currently within the regular range.

The regular price range for this route is between $718 and $1523. The current lowest deal is $817 with United Airlines for travel from Sep 23-Sep 30.

now $817

Low $718

High $1,523

The cheapest time to fly from St. Louis to Seoul

The cheapest month to fly from St. Louis to Seoul is January, with a median price of $369. The most expensive month is September, with a median price of $1420. Prices are generally lower from January to December.

January

Cheapest

Flights from $369

September

Most Expensive

Flights from $1,420

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from St. Louis to Seoul

Frontier Airlines

WestJet

United Airlines

Deutsche Luft Hansa

Last-minute flights going from St. Louis to Seoul

Tue, Jul 14

⌛ Last-Minute

STL - Seoul

St. Louis (STL) - Seoul (ICN)

Air Canada

$1,216

$1,479

One-way

Thu, Jul 16

⌛ Last-Minute

STL - Seoul

St. Louis (STL) - Seoul (ICN)

Alaska Airlines, Inc.

$1,216

$1,376

One-way

Sun, Jul 26

⌛ Last-Minute

STL - Seoul

St. Louis (STL) - Seoul (GMP)

$1,342

$1,744

One-way

Sat, Aug 1

⌛ Last-Minute

STL - Seoul

St. Louis (STL) - Seoul (ICN)

Deutsche Luft Hansa

$1,104

$1,413

One-way

Wed, Aug 5

⌛ Last-Minute

STL - Seoul

St. Louis (STL) - Seoul (ICN)

Cathay Pacific

$1,228

$1,215

One-way

Sat, Aug 8

⌛ Last-Minute

STL - Seoul

St. Louis (STL) - Seoul (ICN)

Frontier Airlines, WestJet

$1,087

$930

One-way

Biggest price drops on these dates for flights from St. Louis to Seoul

13 nights

Aug 13 - Aug 26

$1,128 → $1,089

10 nights

Oct 12 - Oct 22

$1,328 → $1,304

12 nights

Aug 11 - Aug 23

$1,115 → $1,149

15 nights

Aug 9 - Aug 24

$1,096 → $1,136

Popular Airports to fly from St. Louis to Seoul

St. Louis - Seoul route insights

💸 Price insights

Recent fares are below the typical level

Recent fares for St. Louis to Seoul are below the typical level, with 6% considered good prices.

📅 Best time to fly

January is historically cheapest at $369

Historically, January is the cheapest month to fly from St. Louis to Seoul, with a median price of $369.

⏱️ Flight duration

Flights are typically 38h 54m

Flights from St. Louis to Seoul typically take 38 hours and 54 minutes, with two stopovers.

✈️ Airlines & availability

Deals are frequent for this route

Deals for flights from St. Louis to Seoul are frequent, appearing often over a 30-day window.

🏆 Airline highlight

United Airlines offers a recent deal for $817

United Airlines recently offered a deal from St. Louis to Seoul for $817 via kiwi, Sep 23-Sep 30.

🎯 Booking tip

Consider flying in January for better prices

Historically, January offers the lowest median prices for this route, at $369.

St. Louis main airports to depart from

St. Louis Lambert International (STL)

Cheapest

St. Louis Lambert International is a good option for flights from St. Louis to Seoul.

📍 ~20 km from St. Louis city center (reachable by car)

💸 Flights from ~$1089

Seoul main airports to arrive at

Incheon International (ICN)

Cheapest

Incheon International Airport is a good option for flights to Seoul from St. Louis.

📍 ~50 km from city center (reachable by car)

💸 Flights from ~$1089

Gimpo International (GMP)

Gimpo International Airport is an alternative arrival airport for flights to Seoul from St. Louis.

📍 ~15 km from city center (reachable by car)

💸 Flights from ~$1373

Airports nearby Seoul used as alternative

Cheongju International (CJJ)

Cheongju International is a practical alternative due to its proximity and international status, despite fewer long-haul options.

📍 ~115 km from Seoul (reachable by express bus and rail services)

💸 Flights from ~$1258

Gimhae International (PUS)

Cheapest

Gimhae International is a major international gateway with a vast network, highly accessible via KTX high-speed rail.

📍 ~320 km from Seoul (reachable by KTX high-speed rail)

💸 Flights from ~$1170

Daegu International (TAE)

Daegu International offers a good selection of international regional flights and is directly accessible via high-speed rail.

📍 ~240 km from Seoul (reachable by high-speed rail)

💸 Flights from ~$1205

Wonju (WJU)

Wonju is geographically the closest candidate airport to Seoul, useful for specific domestic connections.

📍 ~90 km from Seoul (reachable by car)

💸 Flights from ~$1705

Gwangju (KWJ)

Gwangju is a major regional airport with KTX connectivity, an alternative for domestic travel.

📍 ~270 km from Seoul (reachable by KTX)

💸 Flights from ~$1832

Business & First Class Flight Deals to Seoul

Discover luxury on the budget with premium cabin class on flights from St. Louis to Seoul.

Elite

Best Elite deals to Seoul

Exclusive daily First Class, Business Class, and Premium Economy flight deals, refreshed every 24 hours.

From STL

Elite

Aug 14

Seoul, South Korea

89% AI deal score

$6,324

$4,864

Save $1,460

From STL

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Aug 14

Seoul, South Korea

89% AI deal score

$6,567

$5,004

Save $1,563

From STL

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Jul 28

Seoul, South Korea

84% AI deal score

$6,433

$4,742

Save $1,691

From STL

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Jul 28

Seoul, South Korea

84% AI deal score

$6,469

$4,746

Save $1,723

From STL

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Jul 28

Seoul, South Korea

84% AI deal score

$6,469

$4,772

Save $1,697

From STL

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Jul 19

Seoul, South Korea

84% AI deal score

$6,478

$4,798

Save $1,680

From STL

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Aug 05

Seoul, South Korea

84% AI deal score

$6,111

$4,826

Save $1,285

From STL

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Jul 19

Seoul, South Korea

84% AI deal score

$6,469

$4,858

Save $1,611

From STL

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Jul 18

Seoul, South Korea

84% AI deal score

$6,471

$4,859

Save $1,612

From STL

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Aug 02

Seoul, South Korea

84% AI deal score

$6,264

$4,894

Save $1,370

From STL

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Aug 12

Seoul, South Korea

84% AI deal score

$6,324

$4,917

Save $1,407

From STL

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Jul 18

Seoul, South Korea

84% AI deal score

$6,592

$4,918

Save $1,674

From STL

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Aug 13

Seoul, South Korea

84% AI deal score

$6,453

$4,981

Save $1,472

From STL

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Dec 12

Seoul, South Korea

84% AI deal score

$26,630

$21,666

Save $4,964

From STL

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Dec 12

Seoul, South Korea

84% AI deal score

$26,914

$21,684

Save $5,230

From STL

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Aug 05

Seoul, South Korea

83% AI deal score

$6,095

$4,856

Save $1,239

From STL

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Jul 28

Seoul, South Korea

83% AI deal score

$6,469

$4,969

Save $1,500

From STL

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Jul 28

Seoul, South Korea

83% AI deal score

$6,469

$4,969

Save $1,500

From STL

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Aug 04

Seoul, South Korea

83% AI deal score

$6,092

$4,981

Save $1,111

From STL

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Aug 06

Seoul, South Korea

83% AI deal score

$6,130

$4,981

Save $1,149

From STL

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Aug 11

Seoul, South Korea

83% AI deal score

$6,201

$4,985

Save $1,216

From STL

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Aug 14

Seoul, South Korea

83% AI deal score

$6,153

$4,987

Save $1,166

From STL

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Aug 03

Seoul, South Korea

83% AI deal score

$6,271

$4,998

Save $1,273

From STL

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Aug 08

Seoul, South Korea

83% AI deal score

$6,138

$5,004

Save $1,134

From STL

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Aug 07

Seoul, South Korea

83% AI deal score

$6,138

$5,004

Save $1,134

From STL

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Jul 30

Seoul, South Korea

83% AI deal score

$6,499

$5,020

Save $1,479

From STL

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Oct 28

Seoul, South Korea

83% AI deal score

$6,399

$5,097

Save $1,302

From STL

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Oct 25

Seoul, South Korea

83% AI deal score

$6,578

$5,401

Save $1,177

From STL

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Oct 31

Seoul, South Korea

83% AI deal score

$25,985

$21,625

Save $4,360

From STL

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Oct 21

Seoul, South Korea

83% AI deal score

$26,206

$21,646

Save $4,560

From STL

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Dec 05

Seoul, South Korea

83% AI deal score

$26,023

$21,659

Save $4,364

From STL

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Oct 26

Seoul, South Korea

83% AI deal score

$25,968

$21,684

Save $4,284

From STL

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Aug 05

Seoul, South Korea

82% AI deal score

$5,957

$4,980

Save $977

From STL

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Aug 05

Seoul, South Korea

82% AI deal score

$5,998

$4,987

Save $1,011

From STL

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Aug 14

Seoul, South Korea

82% AI deal score

$5,960

$4,995

Save $965

From STL

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Aug 05

Seoul, South Korea

82% AI deal score

$6,067

$5,052

Save $1,015

From STL

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Oct 29

Seoul, South Korea

82% AI deal score

$24,692

$21,649

Save $3,043

From STL

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Dec 05

Seoul, South Korea

82% AI deal score

$24,775

$21,659

Save $3,116

From STL

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Sep 28

Seoul, South Korea

82% AI deal score

$26,360

$22,374

Save $3,986

From STL

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Oct 08

Seoul, South Korea

81% AI deal score

$23,937

$21,670

Save $2,267

From STL

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Aug 13

Seoul, South Korea

81% AI deal score

$24,905

$22,035

Save $2,870

From STL

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Sep 29

Seoul, South Korea

81% AI deal score

$25,027

$22,076

Save $2,951

From STL

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Sep 01

Seoul, South Korea

81% AI deal score

$24,703

$22,256

Save $2,447

From STL

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Oct 26

Seoul, South Korea

81% AI deal score

$24,658

$22,470

Save $2,188

From STL

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Oct 21

Seoul, South Korea

80% AI deal score

$6,421

$5,705

Save $716

From STL

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Oct 28

Seoul, South Korea

80% AI deal score

$23,545

$21,625

Save $1,920

From STL

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Oct 08

Seoul, South Korea

80% AI deal score

$23,340

$21,670

Save $1,670

From STL

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Jul 08

Seoul, South Korea

80% AI deal score

$23,563

$22,002

Save $1,561

From STL

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Sep 28

Seoul, South Korea

80% AI deal score

$23,916

$22,076

Save $1,840

From STL

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Sep 12

Seoul, South Korea

80% AI deal score

$23,777

$22,076

Save $1,701

From STL

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Oct 21

Seoul, South Korea

79% AI deal score

$6,421

$6,030

Save $391

From STL

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Oct 07

Seoul, South Korea

79% AI deal score

$6,348

$6,030

Save $318

From STL

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Oct 17

Seoul, South Korea

79% AI deal score

$22,793

$21,623

Save $1,170

From STL

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Oct 21

Seoul, South Korea

79% AI deal score

$22,261

$21,625

Save $636

From STL

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Oct 16

Seoul, South Korea

79% AI deal score

$22,890

$21,670

Save $1,220

From STL

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Sep 30

Seoul, South Korea

79% AI deal score

$22,329

$21,674

Save $655

From STL

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Oct 18

Seoul, South Korea

79% AI deal score

$22,570

$21,676

Save $894

From STL

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Jul 31

Seoul, South Korea

79% AI deal score

$23,621

$22,466

Save $1,155

From STL

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Oct 21

Seoul, South Korea

79% AI deal score

$2,811

$2,681

Save $130

From STL

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Jul 26

Seoul, South Korea

79% AI deal score

$2,904

$2,735

Save $169

From STL

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Oct 24

Seoul, South Korea

77% AI deal score

$21,623

From STL

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Dec 05

Seoul, South Korea

77% AI deal score

$21,666

From STL

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Dec 05

Seoul, South Korea

77% AI deal score

$21,684

From STL

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Nov 03

Seoul, South Korea

77% AI deal score

$2,718

$2,681

Save $37

From STL

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Nov 11

Seoul, South Korea

77% AI deal score

$2,708

$2,681

Save $27

From STL

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Nov 01

Seoul, South Korea

77% AI deal score

$2,717

$2,689

Save $28

From STL

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Nov 24

Seoul, South Korea

77% AI deal score

$2,754

$2,731

Save $23

From STL

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Jul 12

Seoul, South Korea

77% AI deal score

$2,922

From STL

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Jul 29

Seoul, South Korea

76% AI deal score

$7,552

From STL

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Jul 23

Seoul, South Korea

76% AI deal score

$7,552

From STL

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Jul 27

Seoul, South Korea

76% AI deal score

$7,554

From STL

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Oct 21

Seoul, South Korea

76% AI deal score

$21,659

From STL

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Oct 21

Seoul, South Korea

76% AI deal score

$21,659

From STL

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Aug 17

Seoul, South Korea

76% AI deal score

$2,998

From STL

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Aug 12

Seoul, South Korea

76% AI deal score

$2,998

From STL

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Aug 12

Seoul, South Korea

76% AI deal score

$2,998

From STL

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Aug 19

Seoul, South Korea

76% AI deal score

$2,998

From STL

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Aug 19

Seoul, South Korea

76% AI deal score

$2,998

From STL

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Aug 18

Seoul, South Korea

76% AI deal score

$2,998

From STL

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Aug 17

Seoul, South Korea

76% AI deal score

$2,998

From STL

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Aug 18

Seoul, South Korea

76% AI deal score

$2,998

From STL

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Aug 13

Seoul, South Korea

76% AI deal score

$2,998

From STL

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Aug 13

Seoul, South Korea

76% AI deal score

$2,998

From STL

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Aug 18

Seoul, South Korea

76% AI deal score

$2,998

From STL

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Seoul, South Korea

76% AI deal score

$2,998

From STL

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Aug 16

Seoul, South Korea

76% AI deal score

$3,020

From STL

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Seoul, South Korea

76% AI deal score

$3,020

From STL

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Aug 15

Seoul, South Korea

76% AI deal score

$3,020

From STL

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Seoul, South Korea

76% AI deal score

$3,020

From STL

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Seoul, South Korea

76% AI deal score

$3,020

From STL

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Aug 15

Seoul, South Korea

76% AI deal score

$3,020

From STL

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Jul 17

Seoul, South Korea

76% AI deal score

$3,028

From STL

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Jul 19

Seoul, South Korea

76% AI deal score

$3,033

From STL

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Seoul, South Korea

76% AI deal score

$3,050

From STL

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Aug 13

Seoul, South Korea

76% AI deal score

$3,050

From STL

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Seoul, South Korea

76% AI deal score

$3,050

From STL

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$3,050

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Seoul, South Korea

76% AI deal score

$3,072

From STL

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76% AI deal score

$3,072

From STL

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Aug 15

Seoul, South Korea

76% AI deal score

$3,072

Frequently Asked Questions About Flights to Seoul

To find more affordable flights, consider being flexible with your travel dates and times. Comparing prices across different airlines and booking sites can often reveal better deals. Setting up price alerts may also help you catch drops in fares.

Booking in advance often provides more options and potentially better prices, though last-minute deals can sometimes appear. Monitoring price trends for your desired travel period can help you decide on an optimal booking time. Prices can fluctuate, so regular checks are useful.

Comparing nearby airports at both your origin and destination can sometimes uncover alternative flight options or better prices. While it may add to your ground travel time, the potential savings on airfare can be significant. Always factor in the total cost and convenience.

Related routes

Consider alternative routes from St. Louis

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