Routes / San Francisco / San Francisco to Seoul

San Francisco Seoul

1 nonstop pairs · 7 nonstop airlines · 54 nonstop flights/week

San Francisco to Seoul runs daily on four carriers, and the price spread between them is wide enough to change how you book.

Air Premia flies a 787 and prices below Korean Air, Asiana, and United for the same twelve-and-a-half-hour nonstop. You give up a useful loyalty program and flexible rebooking. On an economy redeye where you plan to sleep, those trade-offs shrink.

For business class, book Korean Air Prestige Suite. The seat and service are ahead of United Polaris on this route. Korean Air has the larger schedule and flies the 787 or the 747-8. Asiana's A350 Business Smartium is close, but Korean Air's frequency wins.

If schedule is all that matters, United. Twice a day, every day.

Incheon sits on an island west of Seoul. The terminal is beautiful. Getting into the city takes longer than you expect. The AREX express runs to Seoul Station in 43 minutes for about 9,500 won and beats driving in traffic. The express stops running before midnight, so if your flight clears immigration late, plan on the all-stop train or an airport limousine bus.

Have a specific need? Use the decision guide below to filter by your airline, where you live, lounges, or where you're staying in Seoul.

Best Overall

SFO → ICN

3 airlines 54/wk 12h 13m

46% on-time

Korean Air, United Airlines, Asiana Airlines. Also bookable via Aerea, APZ, British Mediterranean Airways, Air India. Korean Air for daily nonstops with Prestige Suite in business class and Korean cabin crews.

Explore SFO → ICN

Nearby cities · connections only

~54mi Monterey No nonstop to Seoul Connecting ~93mi Santa Rosa No nonstop to Seoul Connecting ~94mi Sacramento No nonstop to Seoul Connecting

Decision Guide

Pick What Matters to You

Show me the best pair for...

Best pair by where you're coming from

Your location determines which airport is closest and most convenient.

BART from Powell or Montgomery station to San Francisco International takes about 30 minutes. No transfer, no traffic. The fastest airport connection in the Bay Area.

BART stops at 16th Street and 24th Street Mission, both under 35 minutes from the airport. Same direct line, no transfer needed.

No direct BART. Take BART from Embarcadero or Powell, then bus or rideshare north. Adds 15 to 20 minutes over downtown. Faster by car than by transit.

Oakland International is the local airport with BART plus the Airport Connector reaching downtown in about 25 minutes. San Francisco International is about 50 minutes by BART. Use whichever airport has the route.

San Jose Mineta is 10 minutes from downtown by car. San Francisco International is 30 miles north, 30 to 60 minutes depending on traffic. Caltrain connects to BART at Millbrae for a transit option.

San Francisco International is 10 to 25 minutes by car from most Peninsula cities. Millbrae BART station connects to the airport in one stop.

For most San Francisco-area travelers, SFO → ICN is the default.7 airlines, 54 flights/wk.

Explore SFO → ICN

Best pair by where you're staying in Seoul

Your Seoul airport matters as much as your San Francisco airport.

Central Seoul, steps from Seoul Station where the AREX drops you. Hotels at every price point, dense street food, and shopping. Most first-time visitors stay here because everything is close and the metro connections are easy.

West of center and close to Seoul Station by metro. Younger crowd, live music, bars, and budget hotels. A strong base for solo travelers or anyone who wants nightlife within walking distance.

South of the Han River. Upscale shopping, business hotels, and Korean BBQ spots that locals choose over the tourist-district versions. About 30 minutes from Seoul Station by metro. Business travelers with meetings in the Gangnam towers should stay here rather than commuting from the north side.

The historic quarter with palaces, traditional hanok guesthouses, and narrow streets north of Cheonggyecheon stream. Quieter at night. Better for travelers who want to walk through old Seoul than for anyone looking for late-night options.

The international neighborhood with English-friendly restaurants and bars. The area is evolving after the US military base relocated, but the food scene remains one of the most diverse in the city. Central location with easy metro access.

Financial district on an island in the Han River. Business hotels, corporate lunch spots, not much else. Only worth staying here if your meetings are in the Yeouido towers.

ICN is the right Seoul airport for most travelers.Check individual route pages for ground transport from ICN.

Explore SFO → ICN

Which pair your airline flies nonstop

Loyalty programs drive airport choice for frequent flyers. Here's where each airline operates.

Airline	SFO–ICN
Aerea	✓
APZ	✓
Korean Air	✓
British Mediterranean Airways	✓
United Airlines	✓
Air India	✓
Asiana Airlines	✓

Most airlines fly SFO → ICN.0 airlines serve multiple pairs.

Explore SFO → ICN

Ranked by on-time performance

On-time = departing within 15 min of schedule. Higher competition tends to keep airlines punctual.

46% on-time. 7 airlines competing.

Insufficient data — 1 flight/week doesn't generate meaningful OTP stats.

SFO → ICN has a 46% on-time record.High competition keeps airlines punctual.

Explore SFO → ICN

Lounge access by airport and terminal

Premium lounge access varies dramatically by terminal. This alone can determine airport choice for some travelers.

A compact airport with minimal lounge access. The terminals are small enough that a lounge adds little practical value for short domestic flights. For longer departures, check current Priority Pass or credit card lounge availability in your terminal before relying on it.

Business class on United long-haul flights. Lie-flat daybeds, shower suites, and a la carte dining. One of the better airline lounges in the United States. Access is ticket-based, not credit card or membership.

American Express Platinum cardholders. Full bar, hot buffet, and a quieter atmosphere than the gate area. Gets crowded during afternoon departure banks. Worth arriving early to secure a seat.

United Club membership, select credit cards, or business class tickets. Basic food and drink service across several locations in the domestic and international terminals. Functional, not remarkable.

Several Priority Pass options across terminals. Quality varies by location. Check which lounge matches your terminal before clearing security, as airside transfers between terminals require the AirTrain.

A smaller airport with minimal lounge presence. The terminal is compact enough that gate areas are not particularly uncomfortable. Quick security and short walks offset the lack of dedicated lounge space.

SkyTeam Elite Plus and Prestige Class passengers. Spacious, well-maintained, with a noodle bar and shower suites. One of the better airline lounges in Asia.

Star Alliance Gold and Business Class. Korean food options, runway views, and enough space that it rarely feels crowded outside peak evening departures.

Priority Pass and paid walk-in access. Standard seating with drinks, snacks, and showers. Functional, not luxurious.

Priority Pass accepted. Quieter than the airline lounges during off-peak hours. Korean snacks and a coffee bar. A decent fallback for long layovers.

Your airline and cabin class determine which lounges you can access.Check route pages for terminal assignments.

Explore SFO → ICN

Ranked by flights per week

More flights = more flexibility. Miss your flight, catch the next one. Schedule depth is insurance.

54/wk (~8/day) — 7 airlines.

1/wk each. Not viable for flexible travel planning.

SFO → ICN: 54 flights/week.8 departures per day.

Explore SFO → ICN

Getting to the airport

Cost and time vary by mode. Train is more predictable than driving.

Around 10 to 15 dollars to downtown San Jose, about 10 minutes. Around 50 to 70 dollars to downtown San Francisco, 45 to 60 minutes depending on 101 traffic. The quick ride to South Bay destinations is the main advantage of this airport.

The light rail station connects to the north side of the terminal area. Service runs to downtown San Jose and connects to Caltrain at the Diridon station. The ride into downtown takes about 15 minutes. Frequency varies, so check the schedule rather than assuming short waits.

No direct Caltrain station at the airport, but VTA light rail connects to Diridon station. From there, Caltrain runs north through the peninsula to San Francisco. Total time to San Francisco is 90 minutes or more. Not fast, but avoids driving.

Direct rail from the International Terminal to downtown San Francisco in about 30 minutes. Trains run every 15 to 20 minutes during peak hours. The station is one level below the departures hall. Connects to the broader Bay Area rail network for the East Bay and points south.

Around 30 to 50 dollars to downtown San Francisco, 20 to 30 minutes without traffic. Rush hour on 101 or 280 can double the drive time. Pickups are curbside at the domestic terminals and on the departures level at the International Terminal.

Local bus service to peninsula cities and parts of San Francisco. Slower than BART but cheaper, and connects to areas the rail line does not reach directly. Not practical for time-sensitive arrivals.

The rental car center is off-airport, connected by AirTrain. About 10 minutes from the terminal to the counter. Useful for trips down the peninsula or up the coast. Parking in San Francisco itself is expensive and unnecessary for a downtown stay.

The Oakland Airport Connector people mover links the terminal to the Coliseum BART station in about 8 minutes. From there, downtown Oakland is 15 minutes and downtown San Francisco is about 35 minutes. Total door-to-door to San Francisco runs around 50 minutes.

Around 15 to 25 dollars to downtown Oakland, about 15 minutes. Around 40 to 60 dollars to downtown San Francisco, 25 to 40 minutes depending on bridge traffic. Pickups are curbside at the terminal.

Local bus service connecting to Oakland and surrounding East Bay cities. Slower than BART but reaches destinations off the rail line.

Weigh transit time against schedule flexibility.A faster airport with fewer flights may not save you time overall.

Explore SFO → ICN

Red-eye vs daytime departures

Departure timing affects jet lag, hotel costs, and how you spend your first day.

Flights leave SFO around midday and land at Incheon the following evening local time. The cabin darkens a few hours in and most passengers try to sleep, but your body clock says afternoon. A window seat and a sleep aid help. Arriving at Incheon around 5 or 6pm means AREX trains are running, immigration moves quickly, and you can reach central Seoul before 8pm.

Return flights leave Seoul in the morning and land at SFO the same calendar morning, thanks to the dateline. This is the easier direction for rest. Board in the morning Korea time and by mid-flight your body is ready for sleep. Landing at SFO in the early morning gives you a full day back, though jet lag may catch up by afternoon.

The 16- to 17-hour time difference means real jet lag in both directions. Eastbound tends to be harder. On the outbound, resist napping until local evening in Seoul. On the return, expect to wake at 3 or 4am for a few days. The flight length at least gives you time to rest on board, which helps more than you might expect.

SFO → ICN has the most departure options.Check the route page for schedule details.

Explore SFO → ICN

Premium cabin options

Business and first class products on this route, ranked by value and quality.

Korean Air flies widebody aircraft on this route with Prestige Suite in business class. A proper flat bed with a door and direct aisle access. The Korean meal service is strong and the crew sets a high standard. Korean Air operates from Terminal 2 at Incheon, which is newer and less crowded than Terminal 1.

Asiana Business Smartium offers a staggered flat-bed layout with direct aisle access. The food leans Korean, including a bibimbap that passengers remember. Asiana flies from Terminal 1 at Incheon. Less privacy than Korean Air Prestige Suite, but the comfort and service compete.

United Polaris runs on this route with a lie-flat seat and access to the Polaris lounge at SFO. The product integrates with Star Alliance connections and MileagePlus earning. If you hold United elite status, this is the simplest path to a business-class seat on the route.

Air Premia does not sell business class but offers a premium economy seat with extra legroom and better meals. On a 12-hour flight, the upgrade from standard economy is worth the relatively small price difference. Not a lie-flat, but a meaningful step up in comfort for travelers who do not need a full business-class cabin.

Check route pages for cabin details per airline.Business class products vary significantly between carriers.

Explore SFO → ICN

Connecting through San Francisco from a domestic flight

Six carriers fly SFO to Incheon nonstop with multiple daily departures. A connection through another city adds hours and rarely saves money on a paid ticket. The one case where routing through Tokyo, Taipei, or a US West Coast hub helps is award travel, where nonstop availability in premium cabins can sell out months ahead. If you have flexible points and no nonstop award seats, a one-stop itinerary on a partner carrier can open up business class at the same mileage cost. On a cash fare, take the nonstop.

SJC has no Seoul nonstops. Your airline may offer a single-ticket connection through a hub. Otherwise, ground transport to a nonstop airport.

Book SFO → ICN. Same airport, no ground transport needed. 7 airlines, 54/wk.

OAK has no Seoul nonstops. Your airline may offer a single-ticket connection through a hub. Otherwise, ground transport to a nonstop airport.

Avoid cross-airport transfers. No direct transit links between most metro airports. Budget 4+ hours minimum if you must.

Check which San Francisco airport your domestic flight arrives at, then book Seoul from that same airport.SFO arrivals → SFO–ICN · SJC arrivals → SJC–ICN

SFO → ICN

Know Your Airports

San Francisco & Seoul Airport Profiles

Each airport has a personality. Terminal quality, transit access, lounge scene, and crowd levels vary dramatically — sometimes more than the flight itself.

San Francisco Metro

Four terminals connected by an automated AirTrain that loops the complex. The International Terminal anchors the west end with high ceilings and natural light. Three domestic terminals line the east side. The walk between the farthest domestic gate and the International Terminal takes about 15 minutes on the AirTrain, so leave time for connections across the complex.

BART sits one level below the International Terminal departures hall, making transit access straightforward on the international side and a short AirTrain ride from the domestic gates. Security lines can run long during afternoon departure banks when transpacific flights cluster together.

The airport sits on the bay, and marine layer fog is a regular summer feature. Morning departures in June through August can push 30 to 60 minutes. Afternoon flights are typically clear. If on-time departure matters, book the afternoon.

Seoul Pairs

1

ICN

Airlines

7

Flights/Week

54

No high-frequency connections found. Check SJC routes for all options.

Closest nonstop airport SFO (San Francisco International Airport) · 11mi from OAK

Or connect through LAX Los Angeles International Airp... · 74/wk onward SEA Seattle–Tacoma International A... · 40/wk onward HNL Daniel K. Inouye International... · 28/wk onward

Seoul Metro

Incheon International sits on an island in the Yellow Sea, 55 kilometers west of central Seoul. Two terminals, each the size of a standalone international airport. Terminal 1 is the original building, wide and long, with a central duty-free zone that could pass for a shopping mall. Terminal 2 opened in 2018 [VERIFY] and is newer, quieter, and better designed for connections.

Walking distances in both buildings are significant. Budget 15 minutes from security to far gates. A free shuttle runs between terminals every five minutes, but the ride itself takes 15 minutes. Transfer passengers have access to transit hotels, showers, a spa, and Korean cultural experience centers airside. The airport was designed for connections and it shows.

San Francisco Pairs

2

SFO + SJC

Nonstop from San Francisco

54/wk

Into Seoul

43 min

AREX Express

Gimpo handles domestic flights and short-haul international traffic, 15 kilometers from central Seoul. The international terminal is a single compact wing. Security lines are short. The walk from curb to gate takes 10 minutes on a slow day.

Seoul Metro Lines 5 and 9 and the AREX rail line all stop at Gimpo. The combination of direct subway access and short distances inside the terminal makes this the fastest major airport experience in the Seoul metro area. The domestic terminal next door handles the bulk of the traffic. The international side is quieter.

Closest nonstop airport ICN (Incheon International Airport) · 20mi from GMP

Connect through HND Tokyo Haneda International Air... · 161/wk onward

All Pairs

Full Comparison

Every airport combination ranked by schedule depth. SFO–ICN carries 100% of weekly flights with the best on-time record.

Route	Airlines	Flights/Wk	Share	Duration	OTP
SFO → ICN	3	54		12h 13m	46%	Explore →
SJC → ICN	1	0		11h 47m	75%	Explore →

Coverage Matrix

Which Airlines Fly Which Pairs

Not all planes are the same size. The aircraft type below each checkmark tells you whether you are getting a widebody (777, 787, A350) with wider seats and a quieter ride, or a narrowbody (737, A321) with a single aisle. On flights over five hours, the difference is significant.

SFO–ICN

Korean Air

✓
747-400, 78X

Asiana Airlines

✓
A350-900, 787-9

United Airlines

✓
787-9

Air India (codeshare)

✓
777-300ER

APZ (codeshare)

✓
787-9

British Mediterranean Airways (codeshare)

✓
747-400

Aerea (codeshare)

✓
787-9

Quick Reference

Route Facts

Total Nonstops

54/wk

Across 1 pairs

Airlines

7

7 on SFO–ICN

Fastest Pair

12h 13m

SFO → ICN

Distance

5,676 mi

9,133 km

San Francisco

3 airports

SJC, SFO, OAK

Seoul

2 airports

ICN, GMP

Best OTP

46%

SFO → ICN

No Nonstop

SJC, OAK

No Seoul nonstops

SFO → ICN SJC → ICN SJC Routes SFO Routes SJC Delays SFO Delays

FAQ

Frequently Asked Questions

Common questions about San Francisco to Seoul flights.

Most nonstops leave SFO between late morning and early afternoon, landing at Incheon the following evening local time. The flight is about 12 to 13 hours westbound. You cross enough time zones to lose a calendar day in the air. Plan to sleep on the plane regardless of when you leave. Return flights from Seoul depart in the morning and land at SFO the same calendar morning, thanks to the dateline working in your favor.

The AREX express goes to Seoul Station in about 43 minutes, but Seoul Station is in the north-central part of the city. For Gangnam or anywhere south of the Han River, take the AREX all-stop train and connect to the Seoul Metro, or take an airport limousine bus that runs direct to Gangnam and other southern districts. A taxi takes around an hour depending on traffic and costs more, but the door-to-door convenience can justify it for families or late arrivals.

Air Premia is a Korean hybrid carrier, not an ultra-low-cost airline. The aircraft are clean and the service is professional. You give up some comfort compared to Korean Air or Asiana: seat pitch in economy is tighter and meals are simpler. There is no lounge access. Air Premia sells a premium economy product with more legroom that is worth considering on a 12-hour flight.

Summer and Korean holidays like Chuseok in September or October and Lunar New Year in January or February push fares up. The lowest economy fares tend to appear in late winter and early spring, before summer travel ramps up. Booking two to three months ahead usually beats last-minute prices. Air Premia sets the price floor. When they run a sale, the other carriers sometimes follow.

Seoul runs on cards and mobile payments more than most cities in Asia. Visa and Mastercard work in almost every restaurant, convenience store, and metro ticket machine. You can go days without cash. The exception is traditional markets and small street food stalls, where cash is still expected. Exchange a small amount at Incheon after landing. The bank counters and ATMs in the arrivals hall offer better rates than anything in the US.

With six carriers and multiple daily nonstops, connecting rarely saves money and always adds hours. The one scenario where it helps is award travel. If nonstop award space is sold out in the class you want, routing through Tokyo, Taipei, or a US West Coast hub can open partner availability. On a paid ticket, take the nonstop.