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$338+ Cheap flights from Boston (BOS) to Seoul (SEL)

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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SEL
Aug 21 — Aug 281
Thu 8/21
Thu 8/28
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to Seoul are usually found in September or October, booked 44 days in advance, depart on a Monday or Wednesday and return on a Tuesday

Cheap flight deals from Boston to Seoul

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Seoul (SEL). 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 August 16, 2025.

Round-trip from

$917
(Gotogate)

One-way from

$338
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,372

Good round-trip deal

$912 or less

Good one-way deal

$524 or less
From Boston Logan Intl to Seoul (SEL)
Search Deals
One-way flight from Boston Logan Intl to Seoul (SEL)
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Highest demand for flights based on searches. 11% potential increase in price ($180 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($54 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Boston Logan Intl to Seoul (SEL).
Search Deals
Price to beat on a one-way flight from Boston Logan Intl to Seoul (SEL).
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Find flight deals from Boston to Seoul

Cheapest flights from Boston to Seoul
Explore the most affordable flight options available from Boston to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 16, 2025.

This Gotogate deal was found by Cheapflights users on 8/14. 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 9/36:40 pmBOS - GMP
2 stops31h 20mMultiple Airlines
Wed 9/109:05 amGMP - BOS
1 stop20h 35mMultiple Airlines
Deal found 8/14$917
This Mytrip deal was found by Cheapflights users on 8/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/36:40 pmBOS - ICN
2 stops36h 25mMultiple Airlines
Fri 9/128:15 amICN - BOS
1 stop21h 25mMultiple Airlines
Deal found 8/14$920
This American Airlines deal was found by Cheapflights users on 8/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/14:15 pmBOS - ICN
1 stop34h 15mAmerican Airlines
Mon 9/155:25 pmICN - BOS
1 stop19h 17mAmerican Airlines
Deal found 8/15$921
This American Airlines deal was found by Cheapflights users on 8/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/15:55 amBOS - ICN
1 stop20h 35mAmerican Airlines
Sun 9/75:25 pmICN - BOS
1 stop19h 16mAmerican Airlines
Deal found 8/15$922
This American Airlines deal was found by Cheapflights users on 8/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/294:35 pmBOS - ICN
1 stop33h 55mAmerican Airlines
Mon 10/65:45 pmICN - BOS
1 stop32h 54mAmerican Airlines
Deal found 8/15$923
This Air Canada deal was found by Cheapflights users on 8/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/216:00 amBOS - ICN
1 stop21h 15mAir Canada
Tue 11/116:55 pmICN - BOS
2 stops28h 37mAir Canada
Deal found 8/15$925
This Air Canada deal was found by Cheapflights users on 8/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/226:00 amBOS - ICN
2 stops21h 05mAir Canada
Wed 10/295:55 pmICN - BOS
2 stops28h 57mAir Canada
Deal found 8/15$926
This American Airlines deal was found by Cheapflights users on 8/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/15:55 amBOS - ICN
1 stop20h 35mAmerican Airlines
Tue 9/235:25 pmICN - BOS
2 stops27h 14mAmerican Airlines
Deal found 8/15$927
This FlightHub deal was found by Cheapflights users on 8/14. 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.
Fri 11/216:40 pmBOS - GMP
2 stops29h 10mMultiple Airlines
Sun 11/308:35 amGMP - BOS
1 stop21h 45mMultiple Airlines
Deal found 8/14$928
This FlightHub deal was found by Cheapflights users on 8/14. 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.
Fri 11/216:40 pmBOS - ICN
2 stops35h 45mMultiple Airlines
Sun 11/308:20 amICN - BOS
1 stop22h 00mMultiple Airlines
Deal found 8/14$928
This lol.travel deal was found by Cheapflights users on 8/15. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/15:50 amBOS - ICN
2 stops21h 15mAir Canada
Mon 9/155:45 pmICN - BOS
2 stops28h 45mAir Canada
Deal found 8/15$929
This American Airlines deal was found by Cheapflights users on 8/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/124:35 pmBOS - ICN
1 stop33h 55mAmerican Airlines
Wed 9/245:25 pmICN - BOS
1 stop19h 17mAmerican Airlines
Deal found 8/15$930

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Seoul 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 August 16, 2025.
Use the filters below to find and compare flights from Boston to Seoul that are best for you.

Fly from

Boston

Fly to

Seoul

Route

Depart

Return

Price

BostonSeoul

BOS - GMP

BOSGMP

Boston Logan Intl

Wed 9/3

6:40 pm-3:00 pm

2 stops31h 20m

Seoul Gimpo Intl

Wed 9/10

9:05 am-4:40 pm

1 stop20h 35m

$917

BostonIncheon

BOS - ICN

BOSICN

Boston Logan Intl

Mon 9/15

6:00 am-3:30 pm

1 stop20h 30m

Incheon Intl

Mon 10/6

5:45 pm-11:31 pm

1 stop18h 46m

$922

BostonIncheon

BOS - ICN

BOSICN

Boston Logan Intl

Sun 9/7

6:00 am-3:30 pm

1 stop20h 30m

Incheon Intl

Mon 9/22

5:25 pm-11:42 pm

1 stop19h 17m

$922

BostonIncheon

BOS - ICN

BOSICN

Boston Logan Intl

Tue 9/23

6:00 am-3:30 pm

1 stop20h 30m

Incheon Intl

Tue 10/28

5:55 pm-11:27 pm

1 stop18h 32m

$922

BostonIncheon

BOS - ICN

BOSICN

Boston Logan Intl

Thu 9/4

6:00 am-3:30 pm

1 stop20h 30m

Incheon Intl

Sun 9/14

5:25 pm-11:41 pm

1 stop19h 16m

$922

BostonIncheon

BOS - ICN

BOSICN

Boston Logan Intl

Mon 9/15

6:00 am-4:05 pm

2 stops21h 05m

Incheon Intl

Tue 9/30

5:45 pm-9:30 am

2 stops28h 45m

$925

BostonIncheon

BOS - ICN

BOSICN

Boston Logan Intl

Sat 9/13

1:40 am-7:05 pm

1 stop28h 25m

Incheon Intl

Sun 9/21

8:05 pm-11:00 pm

1 stop39h 55m

$925

BostonIncheon

BOS - ICN

BOSICN

Boston Logan Intl

Fri 9/12

7:00 pm-9:35 pm

1 stop37h 35m

Incheon Intl

Sat 9/20

9:05 pm-6:10 pm

1 stop34h 05m

$925

BostonIncheon

BOS - ICN

BOSICN

Boston Logan Intl

Tue 9/23

6:00 am-4:05 pm

2 stops21h 05m

Incheon Intl

Tue 10/28

5:55 pm-9:52 am

2 stops28h 57m

$925

BostonIncheon

BOS - ICN

BOSICN

Boston Logan Intl

Fri 9/12

7:00 pm-9:35 pm

1 stop37h 35m

Incheon Intl

Sun 9/21

9:05 pm-6:10 pm

1 stop34h 05m

$925

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/15

Showing 1-10 of 44 results
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The best insider tips for Boston to Seoul flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Boston to Seoul trip
Airports
BOS

Use the FlyLogan App to pre-order meals and save time at BOS. Most eateries participate, ensuring your food is ready for pick-up.

Read more about BOSby Paul Rubio
ICN

The AREX express train is a quick, convenient option to reach Seoul Station from ICN, taking 40-50 minutes. Ideal for avoiding traffic.

Read more about ICNby Gabriel Leigh
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on ICN

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Paul Rubio

Paul Rubio

Expert on BOS

Paul Rubio

Paul Rubio

Travel journalist and photographer Paul Rubio is a Miami native (and current resident), who has lived in nine countries and traveled to 137. He is an expert in luxury travel, eco-travel, loyalty programs, hotels, airports and airlines. He is a contributing editor at AFAR, Condé Nast Traveler, LUXURY Magazine, and Palm Beach Illustrated.

Read more

Best time to book a flight from Boston to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul from Boston 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 Boston to Seoul

How far ahead should I book a flight from Boston to Seoul?

Use this chart to determine the optimal time to book a round-trip flight from Boston to Seoul. Price data was last updated on August 8, 2025.

To ensure you get the cheapest price possible for a flight from Boston to Seoul, you should look to book at least 44 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Boston to Seoul?

Currently, February is the cheapest month in which you can book a flight from Boston to Seoul (average of $994). Flying from Boston to Seoul in December is currently the most expensive (average of $1,635). 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 BOS to SEL?

Find hourly flight availability from Boston to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 16, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 26% on flights from Boston to Seoul by exploring options for tickets in the morning.

What is the cheapest day to fly from Boston to Seoul?

Use this chart to determine the cheapest time to fly round-trip from Boston to Seoul. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Boston to Seoul flight should consider departing on Thursday afternoons when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Boston to Seoul

Explore weekly flight availability from Boston to Seoul. 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 August 16, 2025.

The most flights from BOS to SEL are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

What’s the top layover airport for flights from Boston to Seoul?

Share of 1-stop round-trip flights from Boston to Seoul chosen by Cheapflights users in the past 12 months, using the same layover each way.

Hong Kong (HKG) – chosen by Cheapflights users on 90% of 1-stop itineraries from Boston to Seoul on Cheapflights.

What’s the cheapest layover airport for flights from Boston to Seoul?

Average round-trip fare for 1-stop flights from Boston to Seoul, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Hong Kong (HKG) is the most affordable 1-stop option, with an average round-trip price of $789.

What’s the fastest layover option from Boston to Seoul?

Shortest average travel time for 1-stop one-way flights from Boston to Seoul, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Toronto (YYZ) have the shortest average one-way travel time for 1-stop routes: 22h 15m.

Which airport typically offers the quickest layover for flights from Boston to Seoul?

Average layover duration for 1-stop one-way flights from Boston to Seoul, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Toronto (YYZ) offer the fastest connection on this route, with an average layover time of 3h 05m.

Reviews of airlines servicing Seoul

Get insights into the airlines that provide service to Seoul. 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 Seoul. Reviews last updated August 16, 2025.
Read through reviews of airlines operating flights from Boston to Seoul, such as Korean Air, Delta, and Cathay Pacific. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,131 reviews

Comfort

8.3

Entertainment

8.2

Crew

8.7

Food

8.1

Boarding

8.5

Overall

8.4

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
1,131 reviews
Korean Air
8.4
Very good
1,131 reviews

Comfort

8.3

Entertainment

8.2

Crew

8.7

Food

8.1

Boarding

8.5

Overall

8.4

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
7,985 reviews
Korean Air
8.4
Very good
1,131 reviews

Comfort

8.3

Entertainment

8.2

Crew

8.7

Food

8.1

Boarding

8.5

Overall

8.4

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.
Cathay Pacific
7.6
Good
968 reviews
Korean Air
8.4
Very good
1,131 reviews

Comfort

8.3

Entertainment

8.2

Crew

8.7

Food

8.1

Boarding

8.5

Overall

8.4

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.
Turkish Airlines
7.3
Good
3,942 reviews
Korean Air
8.4
Very good
1,131 reviews

Comfort

8.3

Entertainment

8.2

Crew

8.7

Food

8.1

Boarding

8.5

Overall

8.4

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
9,966 reviews
Korean Air
8.4
Very good
1,131 reviews

Comfort

8.3

Entertainment

8.2

Crew

8.7

Food

8.1

Boarding

8.5

Overall

8.4

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 Boston to Seoul. 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 from for flights from Boston to Seoul?

    Boston Logan Intl (BOS) is the airport you will fly out of if you book a flight from Boston to Seoul. You should not have trouble finding flights to Seoul from Logan Intl; the airport handles an average of 2 outbound flights to Seoul per day. You should also have plenty of airline options to choose from since 7 airlines have flights from the Boston airport to Seoul. It is only a 2.6 mi journey to Logan Intl (BOS) from Boston’s city center.

  • How popular is this Boston to Seoul flight route?

    The Boston Logan Intl to Seoul flight path was viewed by 242 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying from Boston to Seoul round-trip?

    Cheapflights users have booked flights from Boston to Seoul round-trip from $397. Other airlines that can offer you cheap pricing are Turkish Airlines, from $805, and Air Canada, from $864. These flights start at 72% lower than the current average price 3 months from now.

  • What are the cheapest flights from Boston to Seoul?

    Looking at all options, your cheapest flight can be booked for $447. While the most popular route (Boston Logan Intl - Incheon Intl) can be booked for $869 on average our data indicates $2,626 when flying from Boston to Seoul.

  • Can I find deals for flights from Boston to Seoul that include hotel bookings?

    Yes. In addition to deals on Boston to Seoul flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Seoul?

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

  • Can I find deals for business class flights from Boston to Seoul?

    Yes. Cheapflights offers flight deals from Boston to Seoul 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 Boston to Seoul?

    Currently, February is the cheapest month in which you can book a flight from Boston to Seoul (average of $994). Flying from Boston to Seoul in December is currently the most expensive (average of $1,635). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 7 airlines flying from Boston to Seoul

Discover the top 7 airlines that operate flights from Boston to Seoul. 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 August 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$397Average$1,995FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$805Average$969FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$864Average$1,186FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$872Average$1,014FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$875Average$1,117FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$902Average$1,464FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$1,470Average$1,973FlexibilityNo cancel feeOn-time81%

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