Get price drops, best fare alerts, deals & personalised recommendations! Explore now
✕
  • Flights
  • Packages
  • Hotels
  • Cars
Round-trip
Coach

Refine your search by airline, by city or airport or direct flights

Here's why travelers choose CheapOair
Price Match Promise
Find great flight deals to destinations worldwide
24/7 Global Concierge
Speak to our travel experts: anytime, anywhere
ClubMiles Rewards
Earn points and air miles to maximize your rewards
Easy Cancellations
Convenient options online and 24/7 global concierge.

Cheap Flight Deals from Seoul Incheon to San Francisco

Call us for phone only deals at 
Round TripOne Way
SEL Seoul
SFO San Francisco
From $519.85
Jan 23, 2026 - Feb 2, 2026
Book Now
SEL Seoul
OAK Oakland
From $1197.99
Apr 14, 2026 - Apr 21, 2026
Book Now
*All fares above were last found on:
Fares are one way/round trip. Fares incl. all fuel surcharges, taxes & fees and our service fees. Displayed fares are subject to change and cannot be guaranteed at the time of booking. See all booking terms and conditions.

When’s a good time to book a flight from Seoul Incheon to San Francisco?

What’s the cheapest day of the week to fly from Seoul Incheon to San Francisco?‡

Search Cheap Flights
What is the cheapest month to fly from Seoul Incheon to San Francisco?‡

Search Cheap Flights

‡This information is based on historical data from the last 365 days.

Finding Affordable Flights from Seoul Incheon to San Francisco
  • Plan Ahead - One of the keys to securing cheap flights from Seoul Incheon to San Francisco is to plan your trip well in advance. Airlines often offer lower prices for those who book tickets months ahead. Keep an eye on special promotions and sales events, which can yield significant savings.
  • Flexibility is Key - Being flexible with your travel dates can also lead to substantial cost savings. Consider flying during off-peak seasons or on weekdays when prices tend to be lower.
  • Set Price Alerts - To keep tabs on flight prices, consider setting up fare alerts. These alerts will notify you when fares from Seoul Incheon to San Francisco drop, giving you the opportunity to grab cheap deals.
  • Consider Nearby Airports - If San Francisco has multiple airports, check the prices at each one. Sometimes, flying into a nearby airport and then taking a short train or bus ride to your destination can be a much cheaper option.
  • Bundle and Save - Booking your flight and accommodation together as a package can often result in significant savings. CheapOair offers these bundled deals, so make sure to explore this option.

When is the Cheapest Time to Book Flights from Seoul Incheon to San Francisco?

‡

Got flexible travel dates? Use our flight data from the past year to discover ideal times to fly from Seoul Incheon to San Francisco. Find out which months and days typically offer lower fares and score our best savings.

CheapOair provides the predicted prices for one-way trips or round-trips with a duration of 7 days for domestic and 14 days for international trips based on historical data and available flight information. Graphs are estimates only. Prices are subject to change and can't be guaranteed until ticketed.
Estimated price for
Round-trip

‡Graphs are estimates only. Based on historical data and available flight information. Prices are subject to change and cannot be guaranteed until ticketed.

What Our Customers Say About Our Service?

sitejabber-review
Excellent | 4 Stars
Based on 233,423 reviews
Great | 4.1 Stars
Based on 23,777 reviews
Submit A Review
  • Aug 31, 2025 Ray Hobson Very reliableThis was my first time using this site and I was very please with how everything was handled. Right after I booked my flight I got a call from one of the associates letting me know i didn't pick out my seats, and choose my seat for my trip there and back from my destination. I was kept up to date in my flight information and they made sure I got my boarding pass. My trip was very stress free. I will be using them again. Thank you!

    Read More

  • Aug 28, 2025 MariaEsperanza Estilo Nicko Went Above and BeyondI had to change the return flight of two out of four passengers in our group. Because only half of the group need to travel differently, it took several calls to Iberia Airlines directly and because of the time difference, Nicko coordinated and helped me over a couple of days. Throughout the experience, he explained what he was doing and why he needs to put me on hold and why he needs to call me back the following day, He was very knowledgeable, professional and empathetic to my predicament. Nicko owned the issues and the process and was very transparent with cost and every details of the transactions. I am very grateful and because of him, I will always trust CheapOAir with my travel needs. -Maria E.E.

    Read More

  • Aug 13, 2025 Godswill Yakubu Best Travel app to check.You truly get exceptional value for a lower price, and it feels completely fair. Since I started booking with this app, I’ve come to appreciate why they stand out as the best. It’s been a wonderful experience that makes me feel understood and valued as a customer.

    Read More

See all reviews

Seoul Incheon to San Francisco Flight Route Information

Travel Distance:5,650 Miles
Airlines Flying This Route: Asiana Airlines, Korean Air, United Airlines
Weekly Flights:53
Avg. Flight Duration:43.05 Hours

Insights About Flying from Seoul Incheon to San Francisco

Q. Which is the high season to travel from Seoul Incheon to San Francisco?

A. The month of February is considered the high season for flying from ICN to SFO. Traveling during the high season can affect ticket prices and availability, making this data crucial for trip planning.

Q. How many direct flights are available from ICN to SFO?

A. There are a total of 215 direct flights from Seoul Incheon to San Francisco. For travelers seeking convenience and shorter travel times, this data is important when choosing flight options.

Q. Which is the low season to travel from Seoul Incheon to San Francisco?

A. April is considered the low season for traveling from Seoul Incheon to San Francisco, California. Travelers looking for cost-effective options and fewer crowds may consider traveling during this period.

Q. How many daily flights are there between Seoul Incheon to San Francisco?

A. There are as many as 7 daily flights available for travelers between ICN to SFO. This data offers flexibility in choosing departure times that best suit your schedule.

Q. Which is the busiest day for passengers flying between Seoul Incheon to San Francisco?

A. Monday are the busiest days for passengers flying between Seoul Incheon to San Francisco. Knowing the peak travel day can help you plan your trip to avoid overcrowded flights or airports.

Q. What percentage of travelers spent an average of 9 days in San Francisco, California?

A. Approximately 33.45% of travelers spent an average of 9 days exploring San Francisco. This information can assist in planning the duration of your stay in San Francisco

Q. What percentage of ICN to SFO flyers traveled with kids under 14?

A. About 7% of passengers on flights from Seoul Incheon to San Francisco were accompanied by children under the age of 14. This information is useful if you're planning a family trip and want to know how common it is to travel with young children on this route.

Q. What percentage of Seoul Incheon to San Francisco travelers were over 60 years old?

A. A notable 26% of travelers were aged 60 or older. This statistic provides insights for senior travelers or those seeking a mature travel demographic.

Q. What percentage of ICN to SFO travelers were millennials?

A. Millennials make up a significant portion of travelers on this route, accounting for 33% of all passengers. If you're a millennial looking to connect with like-minded travelers, this statistic might interest you.

Q. What percentage of Seoul Incheon to San Francisco travelers were female?

A. Almost half of the passengers, approximately 45% were female. Knowing the gender distribution can be useful for solo female travelers or those interested in gender-related travel insights.

Q. What percent of Seoul Incheon to San Francisco travellers booked first or business class?

A. 1% of travelers booked first or business class on this route.

Q. On which days one can have the most flight options in San Francisco?

A. Monday offer the most flight options in San Francisco.

§ All flight facts are based on last 3 months' data except the highest and lowest booking months that are based on last 3 months' data.

Cheap Flights from Seoul Incheon to San Francisco

Looking for flights from Seoul Incheon to San Francisco? Look no more, for you're at the right place. Book cheap flights from Seoul Incheon to San Francisco on CheapOair and enjoy great discounts. Whether its leisure or a business trip, we offer the most competitive rates on flight tickets to destinations around the world. Grab ICN to SFO flight deals on CheapOair and save big!

Airports in Seoul Incheon

Seoul is served by Incheon International Airport. The airport is in the west of the Incheon's city center. Incheon International Airport offers flights to several destinations such as Paris, Tokyo, Bangkok, Barcelona, Rome, New York, and more. Intercity buses connect the airport with the other cities in South Korea. Incheon International Airport Railroad airport express station is located in the Transport Centre, adjacent to the main terminal building. Other ground transportation options include taxi and car rental.

Explore San Francisco

The cultural, financial, and commercial pivot of Northern California, San Francisco is located at the tip of a peninsula between the Pacific Coast and the San Francisco Bay. It is a compact city enclosed on three sides by water and boasting sheer rolling hills. The city is well-known for its cool summers, heterogenous blend of architecture, and famous, such as Golden Gate Bridge, former Alcatraz Federal Penitentiary, and more. San Francisco has a number of nicknames such as Golden Gate City, SF, Frisco, and more.

Things to do in San Francisco

Golden Gate Bridge

Golden Gate Bridge was once called the bridge that couldn't be built. Today, this bridge is among the best architectural wonders in the world. This bridge is arguably San Francisco's most famous landmark. Golden Gate Bridge spans 1.7 miles from San Francisco to the Marin headlands and its sidewalks are open during the day to pedestrians and bicyclists.

Golden Gate Park

Golden Gate Park, one of the largest urban parks in the world, expanses for three miles on the western edge of the city. Two major museums, beautiful gardens and facilities for more than 20 sports are available in the park. Among the most popular attractions located in the park are the de Young Museum, the California Academy of Sciences, the Conservatory of Flowers, the San Francisco Botanical Gardens, and the Koret Children's Quarter.

Presidio

Presidio was once a military post and now a national park site and recreational spot boasting arresting vistas, beautiful trails, and architectural and historic treasures. Passengers can come here for a hike, a picnic, a walking tour, or to view an exhibit at the Walt Disney Family Museum.

Best Time to Fly to San Francisco

Weather-wise, the best time to visit San Francisco is from September to November. Fall offers some of the city's warmest temperatures year-round. Spring is also a good time to visit due to the mild temperatures and lack of rain.

Download Our App

Get CheapOair deals on the GO!

Download
Check Your Flight Status

Get there on time, every time!

Check Status

Flights from Seoul Incheon

» More Flights from Seoul Incheon

Flights to San Francisco

» More San Francisco Flight Routes
Earn 2X points on CheapOair app
Earn 2X points on CheapOair app
Book on our apps (iOS & Android) to double your points.
  • Get notified when prices drop for trips you are planning
  • Change or cancel your flights on the go!
  • Get flight alerts and updates for your trips
Switch to the app
Scan QR and installScan QR and install

Award-winning assistance, affordable travel

  • Excellent | 4 Stars
    Based on 233,423 reviews
    This rating is as of 02/10/2025
    Close[x]
  • Great | 4.1 Stars
    Based on 23,777 reviews
  •   American Business Awards
    2020 Gold Stevie – Product
    Management Team of the Year
  •   Stevie Awards for Sales & Customer Service
    2021 Bronze Stevie – Customer Service
    Department of the Year
  •  

Easy Access

Connect with Us
  • Quick Links
  • Popular Airlines
  • Popular Flight Routes
  • Top U.S. Destinations
  • Top International Destinations
Explore our cheap airfare options by carrier, with over 500 options to choose from.
Book one of our most popular flight routes with three easy clicks.
Find cheap airline tickets to popular U.S. destinations from coast to coast.
Get cheap air travel to global destinations in Europe, Asia and beyond.
partners logos

© 2006-2025 Fareportal, Inc. All rights reserved. Privacy Policy and agree to our Terms and Conditions. California: CST #2073455, Florida: ST37449, Hawaii - SOT#TAR-7560-0, Washington: WASOT #602755832 (affiliate of Travelong, Inc.)