Cheap flights from San Jose, California to Seoul from $683 SJC → ICN

Found recently, and the cheapest we hold

It is also the cheapest return we hold, of any age.

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $882 to $1,619.

At $882, the cheapest return found recently is at the low end of that range.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other 5-night return fares leaving within 3 days of 14 Feb 2027 to compare.

Every date we hold

27 fares on 13 departure dates

Which month looks cheapest?

February 2027 is the cheapest month — from $882.

Found recently, and the cheapest we hold

What have prices looked like?

Over 38 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $541 to $764.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other one-way fares leaving within 3 days of 30 Mar 2027 to compare.

Every date we hold

5 fares on 5 departure dates

Which month looks cheapest?

March 2027 is the cheapest month — from $541.

Return

Fares 30 to 59 days before departure were typically 32% lower than 0 to 6 days before departure.

From the cheapest return each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

One-way

The cheapest fares were 90 to 179 days before departure.

From the cheapest one-way each day between 24 Sept and 11 Nov (38 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

How much is a return flight from San Jose to Seoul?

The cheapest return found recently is $882 with Alaska Airlines, 14 Feb 2027 to 19 Feb 2027, found 3 days ago. The cheapest return fare on each of 13 departure dates is usually $895 to $1,867.

How much is a one-way flight from San Jose to Seoul?

The cheapest one-way found recently is $683 with Alaska Airlines, 30 Mar 2027, found 2 days ago. The cheapest one-way we hold, of any age, is $541 with Alaska Airlines, 17 Mar 2027, found 3 days ago. The cheapest one-way fare on each of 5 departure dates is usually $575 to $587.

What is the cheapest month to fly from San Jose to Seoul?

February 2027 is the cheapest month for a return, from $882, 14 Feb 2027 to 19 Feb 2027, found 3 days ago. March 2027 is the cheapest month for a one-way, from $541, 17 Mar 2027, found 3 days ago.

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

In 49 days of prices between 24 Sept and 11 Nov, return fares 30 to 59 days before departure were typically 32% lower than 0 to 6 days before departure. In 38 days of prices between 24 Sept and 11 Nov, one-way fares were cheapest 90 to 179 days before departure.

How long is the flight from San Jose to Seoul?

The cheapest one-way found recently, with Alaska Airlines on 30 Mar 2027, takes 24 h 10 min with 2 stops.

Which airlines have the cheapest flights from San Jose to Seoul?

Between 13 Nov and 26 Apr 2027, Alaska Airlines has the cheapest return on 12 of the 13 departure dates we hold, and American Airlines on 1. Between 11 Feb 2027 and 30 Mar 2027, Alaska Airlines has the cheapest one-way on all 5 departure dates we hold.