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$469+ 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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SEL
Nov 5 — Nov 121
Wed 11/5
Wed 11/12
1 adult, Economy
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Find cheap flights from Boston to Seoul with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Boston Logan Intl to Seoul are usually found in November or October, booked 19 days in advance, depart on a Monday or Tuesday and return on a Monday

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 October 6, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$863
(oojo)

One-way from

$469
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$1,073

Good round-trip deal

$874 or less

Good one-way deal

$515 or less
Provider with most accurate pricing for Boston Logan Intl-Seoul (SEL) flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Seoul (SEL) flights.
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From Boston Logan Intl to Seoul (SEL)
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One-way flight from Boston Logan Intl to Seoul (SEL)
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Highest demand for flights based on searches. 3% potential increase in price ($56 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($41 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Boston Logan Intl to Seoul (SEL).
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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 October 6, 2025.

This oojo deal was found by Cheapflights users on 10/5. 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.
Wed 11/198:00 pmBOS - ICN
1 stop23h 05mTurkish Airlines
Wed 11/2610:45 amICN - BOS
1 stop45h 20mTurkish Airlines
Deal found 10/5$863
This FlightHub deal was found by Cheapflights users on 10/5. 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 11/108:00 pmBOS - ICN
1 stop23h 05mTurkish Airlines
Mon 12/1512:10 amICN - BOS
1 stop31h 55mTurkish Airlines
Deal found 10/5$881
This FlightHub deal was found by Cheapflights users on 10/6. 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 11/198:00 pmBOS - ICN
1 stop23h 05mTurkish Airlines
Mon 11/2410:45 amICN - BOS
1 stop45h 20mTurkish Airlines
Deal found 10/6$883
This Flysmarter deal was found by Cheapflights users on 10/6. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/206:55 pmBOS - ICN
1 stop33h 35mAir Canada
Mon 11/36:55 pmICN - BOS
2 stops28h 37mAir Canada
Deal found 10/6$888
This FlightHub deal was found by Cheapflights users on 10/5. 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 12/18:00 pmBOS - ICN
1 stop23h 05mTurkish Airlines
Mon 12/810:45 amICN - BOS
1 stop45h 20mTurkish Airlines
Deal found 10/5$892
This Expedia deal was found by Cheapflights users on 10/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/106:40 pmBOS - ICN
2 stops32h 30mAir Canada
Mon 12/16:55 pmICN - BOS
2 stops41h 42mAir Canada
Deal found 10/4$897
This Air Canada deal was found by Cheapflights users on 10/6. 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 stop22h 30mAir Canada
Tue 11/116:55 pmICN - BOS
2 stops28h 37mAir Canada
Deal found 10/6$898
This oojo deal was found by Cheapflights users on 10/5. 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 12/88:00 pmBOS - ICN
1 stop32h 20mTurkish Airlines
Tue 3/3111:20 pmICN - BOS
1 stop33h 35mTurkish Airlines
Deal found 10/5$900
This FlightHub deal was found by Cheapflights users on 10/5. 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 10/279:00 pmBOS - ICN
1 stop32h 20mTurkish Airlines
Tue 11/1112:10 amICN - BOS
1 stop31h 55mTurkish Airlines
Deal found 10/5$902
This Air Canada deal was found by Cheapflights users on 10/4. 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.
Mon 11/36:15 amBOS - ICN
1 stop22h 10mAir Canada
Mon 11/108:10 pmICN - BOS
1 stop30h 02mAir Canada
Deal found 10/4$905
This SmartFares deal was found by Cheapflights users on 10/4. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/76:40 pmBOS - ICN
2 stops29h 10mMultiple Airlines
Sun 11/168:20 amICN - BOS
1 stop22h 00mMultiple Airlines
Deal found 10/4$906
This FlightHub deal was found by Cheapflights users on 10/6. 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 10/246:40 pmBOS - GMP
2 stops30h 30mMultiple Airlines
Fri 10/318:35 amGMP - BOS
1 stop21h 45mMultiple Airlines
Deal found 10/6$928

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 October 6, 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

Fri 11/21

6:40 pm-2:10 pm

2 stops29h 30m

Seoul Gimpo Intl

Fri 12/5

8:35 am-4:20 pm

1 stop21h 45m

$928

BostonSeoul

BOS - GMP

BOSGMP

Boston Logan Intl

Wed 2/25

12:15 pm-10:55 am

1 stop32h 40m

Seoul Gimpo Intl

Thu 7/2

12:05 pm-6:10 pm

1 stop19h 05m

$973

BostonSeoul

BOS - GMP

BOSGMP

Boston Logan Intl

Fri 3/6

6:40 pm-2:10 pm

2 stops29h 30m

Seoul Gimpo Intl

Sun 3/22

8:35 am-5:20 pm

1 stop21h 45m

$978

BostonSeoul

BOS - GMP

BOSGMP

Boston Logan Intl

Thu 2/26

2:03 pm-10:05 pm

2 stops42h 02m

Seoul Gimpo Intl

Mon 3/2

7:40 pm-9:59 pm

2 stops40h 19m

$992

BostonSeoul

BOS - GMP

BOSGMP

Boston Logan Intl

Sun 2/15

6:40 pm-2:10 pm

2 stops29h 30m

Seoul Gimpo Intl

Sun 2/22

8:35 am-4:20 pm

1 stop21h 45m

$998

BostonSeoul

BOS - GMP

BOSGMP

Boston Logan Intl

Fri 12/5

6:40 pm-2:10 pm

2 stops29h 30m

Seoul Gimpo Intl

Fri 12/19

8:35 am-4:20 pm

1 stop21h 45m

$1,053

BostonIncheon

BOS - ICN

BOSICN

Boston Logan Intl

Thu 11/6

12:30 am-6:35 pm

1 stop28h 05m

Incheon Intl

Fri 12/12

10:00 am-10:00 pm

1 stop26h 00m

$1,142

BostonSeoul

BOS - GMP

BOSGMP

Boston Logan Intl

Tue 11/11

7:30 am-10:05 pm

2 stops24h 35m

Seoul Gimpo Intl

Tue 11/18

8:00 am-6:47 pm

2 stops24h 47m

$1,177

BostonSeoul

BOS - GMP

BOSGMP

Boston Logan Intl

Wed 11/5

6:00 am-10:05 pm

2 stops26h 05m

Seoul Gimpo Intl

Wed 11/19

8:00 am-6:47 pm

2 stops24h 47m

$1,197

BostonSeoul

BOS - GMP

BOSGMP

Boston Logan Intl

Sun 10/26

7:22 am-10:05 pm

2 stops25h 43m

Seoul Gimpo Intl

Tue 11/11

8:00 am-10:47 pm

2 stops28h 47m

$1,202

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/6

Showing 1-10 of 38 results
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Compare providers for flights from Boston to Seoul

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Seoul in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Seoul flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Seoul flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Seoul flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Seoul flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Seoul flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 October 3, 2025.

To ensure you get the cheapest price possible for a flight from Boston to Seoul, you should look to book at least 19 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, October is the cheapest month in which you can book a flight from Boston to Seoul (average of $774). Flying from Boston to Seoul in June is currently the most expensive (average of $1,358). 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 October 6, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 24% on flights from Boston to Seoul by exploring options for tickets in the evening.

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 at noon 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 October 6, 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).

How much does it cost to fly round-trip from Boston to Seoul?

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 83% 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 $787.

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 San Francisco (SFO) have the shortest average one-way travel time for 1-stop routes: 21h 50m.

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 San Francisco (SFO) offer the fastest connection on this route, with an average layover time of 1h 43m.

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

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 October 6, 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
1,147 reviews

Food

8.1

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

Boarding

8.5

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
1,147 reviews
Korean Air
8.4
Very good
1,147 reviews

Food

8.1

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

Boarding

8.5

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
7,966 reviews
Korean Air
8.4
Very good
1,147 reviews

Food

8.1

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

Boarding

8.5

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
1,020 reviews
Korean Air
8.4
Very good
1,147 reviews

Food

8.1

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

Boarding

8.5

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
3,992 reviews
Korean Air
8.4
Very good
1,147 reviews

Food

8.1

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

Boarding

8.5

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
10,245 reviews
Korean Air
8.4
Very good
1,147 reviews

Food

8.1

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

Boarding

8.5

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.

  • How long is the flight from Boston to Seoul?

    Japan Airlines and Cathay Pacific can get you from Boston to Seoul in just under 28h 05m. Your travel time can differ by up to 4h 35m. The distance from Boston to Seoul is about 6809 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 Cathay Pacific, from $774, and Turkish Airlines, from $805. These flights start at 72% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Boston to Seoul one-way?

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $473. However, be on the lookout for offers from Air Canada and Japan Airlines, as they are both options that can get you from Boston to Seoul for a low price.

  • What are the cheapest flights from Boston to Seoul?

    Looking at all options, your cheapest flight can be booked for $399. While the most popular route (Boston Logan Intl - Incheon Intl) can be booked for $863 on average, our data indicates $2,624 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, October is the cheapest month in which you can book a flight from Boston to Seoul (average of $774). Flying from Boston to Seoul in June is currently the most expensive (average of $1,358). 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 October 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$397Average$1,878FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$774Average$992FlexibilityNo cancel feeOn-time72%
Turkish AirlinesCheapest$805Average$931FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$864Average$1,191FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$873Average$1,061FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$901Average$1,430FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$1,495Average$1,970FlexibilityNo cancel feeOn-time81%

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