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$328+ Cheap flights from the United States to South Korea

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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — ICN
Oct 19 — Oct 261
Sun 10/19
Sun 10/26
1 adult, Economy
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Cheap flight deals from USA to South Korea

Keep the following information in mind while searching for USA to South Korea flight deals. Data was last updated September 19, 2025.

Round-trip from

$649
(oojo)

One-way from

$328
(Trip.com)

Popular in

December

Cheapest in

January

Average price

$1,178

Good round-trip deal

$649 or less

Good one-way deal

$365 or less
From USA to South Korea
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One-way flight from USA to South Korea
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from USA to South Korea.
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Price to beat on a one-way flight from USA to South Korea.
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Find flight deals from USA to South Korea

Cheapest flights from USA to South Korea
Explore the most affordable flight options available from USA to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 19, 2025.

This oojo deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1311:30 amLAX - ICN
1 stop34h 50mChina Eastern
Thu 12/44:10 pmICN - LAX
1 stop33h 55mChina Eastern
Deal found 9/17$649
This Trip.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/510:30 pmSFO - ICN
1 stop27h 55mPhilippine Airlines
Sun 11/237:30 amICN - SFO
1 stop29h 00mPhilippine Airlines
Deal found 9/18$649
This oojo deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2712:30 pmLAX - ICN
1 stop33h 00mChina Eastern
Fri 11/78:55 amICN - LAX
1 stop17h 10mChina Eastern
Deal found 9/17$650
This Jettzy deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/313:30 pmSFO - ICN
Nonstop13h 00mAIR PREMIA
Fri 11/76:55 pmICN - SFO
Nonstop10h 05mAIR PREMIA
Deal found 9/16$650
This Trip.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1710:30 pmSFO - ICN
1 stop27h 55mMultiple Airlines
Sun 2/88:35 pmICN - SFO
1 stop14h 33mMultiple Airlines
Deal found 9/17$651
This oojo deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2712:30 pmLAX - ICN
1 stop33h 00mChina Eastern
Tue 11/44:10 pmICN - LAX
1 stop33h 55mChina Eastern
Deal found 9/18$652
This FlightHub deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/291:00 pmSFO - ICN
1 stop35h 35mAir China
Tue 11/45:50 pmICN - SFO
1 stop32h 40mAir China
Deal found 9/17$652
This Gotogate deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1911:30 amLAX - ICN
2 stops30h 45mChina Eastern
Mon 12/14:40 pmICN - LAX
2 stops33h 25mChina Eastern
Deal found 9/18$653
This oojo deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/63:30 pmSFO - ICN
Nonstop13h 00mAIR PREMIA
Sun 10/196:20 pmICN - SFO
Nonstop10h 40mAIR PREMIA
Deal found 9/18$653
This FlightHub deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2712:30 pmLAX - ICN
1 stop34h 35mChina Eastern
Sun 11/164:10 pmICN - LAX
1 stop33h 55mChina Eastern
Deal found 9/17$654
This FlightHub deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2712:30 pmLAX - GMP
1 stop30h 30mChina Eastern
Wed 11/128:50 pmGMP - LAX
1 stop29h 15mChina Eastern
Deal found 9/16$654
This FlightHub deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1012:00 pmSFO - ICN
1 stop34h 20mChina Eastern
Mon 12/88:55 amICN - SFO
1 stop17h 05mChina Eastern
Deal found 9/16$654

Cheapflights Fare Finder

 
Customize your flight search to find flights from USA to South Korea 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 2,558,603 searches. Data last updated September 19, 2025.
Use the filters below to find and compare flights from the United States to South Korea that are best for you.

Fly from

USA

Fly to

South Korea

Route

Depart

Return

Price

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Mon 11/17

10:30 am-4:15 pm

Nonstop12h 45m

Incheon Intl

Thu 11/20

6:00 pm-11:35 am

Nonstop10h 35m

$662

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Wed 3/11

9:10 am-6:35 pm

1 stop17h 25m

Incheon Intl

Sat 3/28

8:35 pm-10:10 pm

1 stop17h 35m

$676

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Sat 2/7

9:10 am-6:35 pm

1 stop16h 25m

Incheon Intl

Sat 2/14

8:35 pm-1:38 pm

1 stop34h 03m

$676

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Fri 10/31

9:00 am-6:35 pm

1 stop17h 35m

Incheon Intl

Sat 11/1

8:35 pm-8:13 pm

1 stop15h 38m

$676

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Sun 2/8

9:10 am-6:35 pm

1 stop16h 25m

Incheon Intl

Sun 2/15

8:35 pm-10:18 pm

1 stop18h 43m

$676

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Sun 11/2

2:30 pm-8:30 pm

Nonstop13h 00m

Incheon Intl

Sun 11/9

6:55 pm-12:30 pm

Nonstop10h 35m

$698

Los AngelesIncheon

LAX - ICN

LAXICN

Los Angeles

Fri 10/31

11:30 pm-5:10 am

Nonstop13h 40m

Incheon Intl

Sat 11/29

9:20 pm-10:05 am

1 stop29h 45m

$769

Los AngelesIncheon

LAX - ICN

LAXICN

Los Angeles

Sun 10/19

12:30 am-9:10 pm

1 stop28h 40m

Incheon Intl

Wed 11/5

1:45 pm-8:55 pm

1 stop24h 10m

$806

Los AngelesIncheon

LAX - ICN

LAXICN

Los Angeles

Wed 10/29

12:20 am-6:35 pm

1 stop26h 15m

Incheon Intl

Mon 11/24

3:00 pm-1:20 pm

1 stop39h 20m

$809

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 10/27

7:25 am-5:40 pm

1 stop18h 15m

Incheon Intl

Thu 11/6

4:10 pm-9:00 am

Nonstop9h 50m

$834

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/18

Showing 1-10 of 60 results
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Best time to book a flight from USA to South Korea

Have a flexible travel schedule? Discover the best time to fly to South Korea from USA with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United States to South Korea

What is the cheapest month to book a flight from USA to South Korea?

Currently, February is the cheapest month in which you can book a flight from USA to South Korea (average of $989). Flying from USA to South Korea in December is currently the most expensive (average of $1,621). 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.

What is the cheapest time of day to fly from US to KR?

Find hourly flight availability from USA to South Korea. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 19, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from USA to South Korea as you normally would.

Weekly flight availability from USA to South Korea

Explore weekly flight availability from USA to South Korea. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 19, 2025.

The most flights from US0 to KR0 are scheduled on a Wednesday (19 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (14 on average).

Reviews of airlines servicing South Korea

Get insights into the airlines that provide service to South Korea. 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 South Korea. Reviews last updated September 19, 2025.
See what other customers who have flown with Korean Air, AIR PREMIA, and Delta from the United States to South Korea have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,140 reviews

Comfort

8.3

Crew

8.7

Overall

8.4

Food

8.1

Boarding

8.5

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,140 reviews
Korean Air
8.4
Very good
1,140 reviews

Comfort

8.3

Crew

8.7

Overall

8.4

Food

8.1

Boarding

8.5

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
AIR PREMIA
8.2
Very good
62 reviews
Korean Air
8.4
Very good
1,140 reviews

Comfort

8.3

Crew

8.7

Overall

8.4

Food

8.1

Boarding

8.5

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Delta
8.0
Very good
7,964 reviews
Korean Air
8.4
Very good
1,140 reviews

Comfort

8.3

Crew

8.7

Overall

8.4

Food

8.1

Boarding

8.5

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
United Airlines
7.4
Good
8,926 reviews
Korean Air
8.4
Very good
1,140 reviews

Comfort

8.3

Crew

8.7

Overall

8.4

Food

8.1

Boarding

8.5

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Air Canada
7.1
Good
10,000 reviews
Korean Air
8.4
Very good
1,140 reviews

Comfort

8.3

Crew

8.7

Overall

8.4

Food

8.1

Boarding

8.5

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from USA to South Korea. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this USA to South Korea flight route?

    Flights from United States to South Korea have been viewed 1,017 times in the past calendar month.

  • How long is the flight from USA to South Korea?

    Airlines like United Airlines, Alaska Airlines, and Hawaiian Airlines fly from USA to South Korea in about 12h 45m. The time it takes to get you to your destination can typically vary by up to 4h 40m. Airlines will cover a distance of 5642 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from USA to South Korea one-way?

    One-way options have recently been found by users for as low as $366 on AIR PREMIA. Other airlines that offer cheap prices include Hawaiian Airlines from $423 and Alaska Airlines from $424 one-way.

  • Can I find deals for flights from USA to South Korea that include hotel bookings?

    Yes. In addition to deals on USA to South Korea flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from USA to South Korea?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from USA to South Korea.

  • Can I find deals for business class flights from USA to South Korea?

    Yes. Cheapflights offers flight deals from USA to South Korea by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from USA to South Korea?

    Currently, February is the cheapest month in which you can book a flight from USA to South Korea (average of $989). Flying from USA to South Korea in December is currently the most expensive (average of $1,621). 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.

See more FAQs

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Alternative routes for USA to South Korea

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from USA to South Korea

Discover the top 10 airlines that operate flights from USA to South Korea. 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 2,558,603 searches. Data last updated September 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$54Average$129FlexibilityNo cancel feeOn-time62%
DeltaCheapest$318Average$1,631FlexibilityNo cancel feeOn-timeN/A
XiamenAirCheapest$362Average$655FlexibilityNo cancel feeOn-time49%
Hawaiian AirlinesCheapest$422Average$790FlexibilityNo cancel feeOn-time85%
China AirlinesCheapest$528Average$1,243FlexibilityNo cancel feeOn-time70%
WestJetCheapest$549Average$1,214FlexibilityNo cancel feeOn-time60%
Air ChinaCheapest$592Average$728FlexibilityNo cancel feeOn-time67%
China EasternCheapest$640Average$754FlexibilityNo cancel feeOn-time62%
Singapore AirlinesCheapest$651Average$848FlexibilityNo cancel feeOn-time81%
Alaska AirlinesCheapest$675Average$1,075FlexibilityNo cancel feeOn-time75%

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