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$326+ Cheap flights from Incheon Intl (ICN) to San Francisco (SFO)

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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — SFO
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Incheon Intl to San Francisco are usually found in February or March, booked 68 days in advance, depart on a Monday or Wednesday and return on a Monday

Cheap flight deals from Incheon Intl to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Incheon Intl (ICN) to San Francisco (SFO). 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 September 17, 2025.

Round-trip from

$424
(Alaska Airlines)

One-way from

$326
(Alaska Airlines)

Popular in

January

Cheapest in

February

Average price

$660

Good round-trip deal

$546 or less

Good one-way deal

$407 or less
From Incheon Intl to San Francisco
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One-way flight from Incheon Intl to San Francisco
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Highest demand for flights based on searches. 2% potential increase in price ($17 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($18 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 Incheon Intl to San Francisco.
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Price to beat on a one-way flight from Incheon Intl to San Francisco.
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Find flight deals from Incheon Intl to San Francisco

Cheapest flights from Incheon Intl to San Francisco
Explore the most affordable flight options available from Incheon Intl to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/208:35 pmICN - SFO
1 stop33h 09mAlaska Airlines
Mon 10/279:58 pmSFO - ICN
2 stops29h 27mAlaska Airlines
Deal found 9/16$424
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/159:25 pmICN - SFO
2 stops27h 13mAlaska Airlines
Sat 11/87:37 pmSFO - ICN
1 stop29h 58mAlaska Airlines
Deal found 9/15$428
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/149:25 pmICN - SFO
1 stop25h 52mAlaska Airlines
Tue 12/3010:42 pmSFO - ICN
2 stops26h 53mAlaska Airlines
Deal found 9/16$432
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/179:25 pmICN - SFO
2 stops27h 09mAlaska Airlines
Tue 12/309:41 pmSFO - ICN
1 stop27h 54mAlaska Airlines
Deal found 9/16$437
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/59:25 pmICN - SFO
2 stops30h 36mAlaska Airlines
Wed 11/128:00 amSFO - ICN
1 stop17h 35mAlaska Airlines
Deal found 9/17$440
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/169:25 pmICN - SFO
2 stops28h 30mAlaska Airlines
Sat 12/275:42 pmSFO - ICN
1 stop31h 53mAlaska Airlines
Deal found 9/16$442
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/108:35 pmICN - SFO
2 stops29h 44mAlaska Airlines
Fri 10/177:54 pmSFO - ICN
1 stop30h 41mAlaska Airlines
Deal found 9/16$443
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1911:30 amICN - SFO
Nonstop10h 40mUnited Airlines
Fri 10/310:35 amSFO - ICN
Nonstop12h 25mUnited Airlines
Deal found 9/16$444
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/204:50 pmICN - SFO
Nonstop10h 45mUnited Airlines
Mon 10/2711:45 pmSFO - ICN
Nonstop12h 55mUnited Airlines
Deal found 9/16$445
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/149:25 pmICN - SFO
2 stops39h 22mAlaska Airlines
Sat 12/275:42 pmSFO - ICN
1 stop31h 53mAlaska Airlines
Deal found 9/16$446
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/159:25 pmICN - SFO
2 stops28h 54mAlaska Airlines
Tue 10/215:16 pmSFO - ICN
1 stop33h 19mAlaska Airlines
Deal found 9/17$447
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/159:25 pmICN - SFO
2 stops27h 13mAlaska Airlines
Wed 11/56:23 pmSFO - ICN
2 stops31h 12mAlaska Airlines
Deal found 9/15$449

Cheapflights Fare Finder

 
Customize your flight search to find flights from Incheon Intl to San Francisco 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 17, 2025.
Use the filters below to find and compare flights from Incheon Intl Airport to San Francisco that are best for you.

Fly from

Incheon Intl

Fly to

San Francisco

Route

Depart

Return

Price

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Wed 11/5

9:25 pm-11:01 am

2 stops30h 36m

San Francisco

Wed 11/12

8:00 am-6:35 pm

1 stop17h 35m

$440

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Sat 11/15

9:25 pm-6:17 am

1 stop25h 52m

San Francisco

Thu 12/25

11:53 am-6:35 pm

2 stops37h 42m

$446

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Mon 12/22

6:00 pm-11:35 am

Nonstop10h 35m

San Francisco

Mon 12/29

10:30 am-4:15 pm

Nonstop12h 45m

$468

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Fri 10/31

8:05 pm-9:55 am

1 stop29h 50m

San Francisco

Wed 11/12

11:40 am-5:40 pm

Nonstop13h 00m

$563

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Tue 11/25

12:45 pm-6:30 am

Nonstop10h 45m

San Francisco

Wed 12/3

11:45 pm-5:40 am

Nonstop12h 55m

$565

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Sun 2/15

8:35 pm-11:43 pm

1 stop20h 08m

San Francisco

Sat 2/21

11:35 am-6:35 pm

1 stop38h 00m

$595

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Mon 11/3

4:00 pm-9:30 am

Nonstop10h 30m

San Francisco

Mon 12/8

12:25 pm-5:10 am

1 stop23h 45m

$629

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Fri 11/21

4:00 pm-9:30 am

Nonstop10h 30m

San Francisco

Tue 11/25

3:30 pm-5:10 am

1 stop20h 40m

$632

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Wed 12/10

4:00 pm-9:30 am

Nonstop10h 30m

San Francisco

Mon 3/16

6:05 am-3:55 pm

1 stop17h 50m

$632

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Sat 11/22

4:00 pm-9:30 am

Nonstop10h 30m

San Francisco

Sun 11/30

5:55 am-5:35 pm

1 stop18h 40m

$632

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 24 results
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The best insider tips for Incheon Intl Airport to San Francisco 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 Incheon Intl Airport to San Francisco trip
Airlines
Asiana Airlines

Asiana's A380 offers fully flat beds in Business Class, ensuring restful long-haul travel.


Economy Smartium seats provide 36-inch legroom, enhancing comfort on long flights.

Read more about Asiana Airlinesby Marisa Garcia
AIR PREMIA

Air Premia offers 35-inch legroom in Economy, ensuring comfort on long-haul flights.


Premium Economy includes priority boarding and 42-43 inches of legroom, enhancing comfort and convenience.

Read more about AIR PREMIAby Esther Carlstone
United Airlines

United's Polaris Business Class offers lie-flat seats and access to exclusive Polaris Lounges.


Premium Plus provides extra legroom and upgraded meals, ideal for international flights.

Read more about United Airlinesby Harriet Baskas
Airports
ICN

Plan for extra time at ICN security, as lines can take up to 20 minutes, especially without fast track options.

Read more about ICNby Gabriel Leigh
SFO

Use BART for a cost-effective trip from SFO to downtown San Francisco, taking about 40 minutes.

Read more about SFOby Harriet Baskas
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Asiana Airlines

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Esther Carlstone

Esther Carlstone

Expert on AIR PREMIA

Esther Carlstone

Esther Carlstone

Esther Carlstone is a travel and food writer based in Los Angeles. Her work has appeared in publications such as Travel + Leisure, Lonely Planet, Forbes, Tripadvisor, Insider, and more.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines and SFO

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
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

Best time to book a flight from Incheon Intl to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Incheon Intl 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 Incheon Intl Airport to San Francisco

How far ahead should I book a flight from Incheon Intl Airport to San Francisco?

Use this chart to determine the optimal time to book a round-trip flight from Incheon Intl to San Francisco. Price data was last updated on September 12, 2025.

The price you pay for your flight from Incheon Intl Airport to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 68 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Incheon Intl Airport to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Incheon Intl Airport to San Francisco (average of $276). Flying from Incheon Intl Airport to San Francisco in June is currently the most expensive (average of $357). 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 ICN to SFO?

Find hourly flight availability from Incheon Intl to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

It’s optimal to fly from Incheon Intl Airport to San Francisco at noon. By choosing this option you can save up to 40% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Incheon Intl Airport to San Francisco?

Use this chart to determine the cheapest time to fly round-trip from Incheon Intl to San Francisco. Price data was last updated on September 14, 2025.

Travelers seeking maximum savings on their Incheon Intl Airport to San Francisco flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated September 17, 2025.
See what other customers who have flown with Korean Air, AIR PREMIA, and Asiana Airlines from Incheon Intl Airport to San Francisco 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

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very good
1,140 reviews
Korean Air
8.4
Very good
1,140 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
AIR PREMIA
8.2
Very good
62 reviews
Korean Air
8.4
Very good
1,140 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Asiana Airlines
8.2
Very good
481 reviews
Korean Air
8.4
Very good
1,140 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
United Airlines
7.4
Good
8,926 reviews
Korean Air
8.4
Very good
1,140 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Air Canada
7.1
Good
10,000 reviews
Korean Air
8.4
Very good
1,140 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Related info for your journey

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

  • What airport do you fly into for flights to San Francisco from Incheon Intl?

    For a flight from Incheon Intl to San Francisco, you will be flying into San Francisco. San Francisco (SFO) is just 11.8 mi from the center of the city. San Francisco is the only San Francisco airport and it handles 10 inbound flights from Incheon Intl per day. 6 airlines have flights to San Francisco from Incheon Intl on a regular basis.

  • How popular is this Incheon Intl Airport to San Francisco flight route?

    Flights from Incheon Intl to San Francisco have been viewed 40 times in the past calendar month.

  • How long is the flight from Incheon Intl Airport to San Francisco?

    Alaska Airlines, United Airlines, and Delta can get you from Incheon Intl Airport to San Francisco in just under 10h 35m. Your travel time can differ by up to 20h 01m. The distance from Incheon Intl Airport to San Francisco is about 5642 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 Incheon Intl Airport to San Francisco round-trip?

    Flying on Air Canada is currently your cheapest option to San Francisco, with prices starting at $381. Additional round-trip tickets that might be worth considering are offered by United Airlines and Asiana Airlines, with the lowest prices starting at $438 and $454, respectively. These flights start at 45% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Incheon Intl Airport to San Francisco one-way?

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $326. Users have also found prices from $327 and $343 on United Airlines and Hawaiian Airlines, respectively.

  • What are the most reliable airlines from Incheon Intl Airport to San Francisco?

    Consider Asiana Airlines (60%), United Airlines (60%) or Thai Airways (38%) when booking your flight. These represent the most reliable airlines when flying from Incheon Intl Airport to San Francisco.

  • What are the cheapest flights from Incheon Intl Airport to San Francisco?

    While on average a flight from Incheon Intl Airport to San Francisco is generally $1,207, our data shows the cheapest flight currently is $318. When looking at the most popular route, (Incheon Intl - San Francisco), you can expect to pay $330 for that flight.

  • Can I find deals for flights from Incheon Intl to San Francisco that include hotel bookings?

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

  • How can I find direct flights from Incheon Intl to San Francisco?

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

  • Can I find deals for business class flights from Incheon Intl to San Francisco?

    Yes. Cheapflights offers flight deals from Incheon Intl to San Francisco 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 Incheon Intl Airport to San Francisco?

    Currently, January is the cheapest month in which you can book a flight from Incheon Intl Airport to San Francisco (average of $276). Flying from Incheon Intl Airport to San Francisco in June is currently the most expensive (average of $357). 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

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
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Top 6 airlines flying from Incheon Intl to San Francisco

Discover the top 6 airlines that operate flights from Incheon Intl to San Francisco. 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 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$381Average$521FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$438Average$581FlexibilityNo cancel feeOn-time69%
Asiana AirlinesCheapest$454Average$668FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$462Average$675FlexibilityNo cancel feeOn-time81%
AIR PREMIACheapest$490Average$673FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$595Average$819FlexibilityNo cancel feeOn-timeN/A

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