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East Asia
Seoul
South Korea · ICN · 9,084.865 km from SF
Est. May 2026
$960
peak
Mid-winter deals are real; summers are rainy and discounted.
Snowy winters, rainy humid July and August, stunning spring and autumn.
Ready to book?
Suggested cheapest window July 2026 · 2026-07-07 → 2026-07-15
Or search May 2026: 2026-05-30 → 2026-06-07
May 2026 is peak
Peak season. Expect premium fares, busy attractions, and the weather locals brag about.
Why this season?
- Weatherdrives prices upApr, MaySpring cherry blossoms
Stunning bloom corridor across the peninsula — peak inbound.
- Weatherdrives prices upSep, OctAutumn foliage
Cool crisp days with spectacular fall color.
- Weatherdrives prices downJul, AugMonsoon (Jangma)
Rainy humid weeks drive fares down sharply.
- Weatherdrives prices downJan, FebCold dry winter
Snowy mountain escape months, cheap city break.
Weather through the year
Typical weather by month
Open-Meteo averages · 2019–2023 · °F
avg high / lowrainy days
J
37°
21°
3d
F
40°
25°
3d
M
51°
34°
5d
A
60°
44°
6d
M
69°
53°
8d
J
76°
63°
11d
J
82°
71°
14d
A
83°
73°
18d
S
77°
64°
9d
O
65°
50°
6d
N
53°
37°
6d
D
38°
23°
5d
warmest 83°Fcoolest 37°F
12-month fare curve
12-month estimated fare curve
Range $500 – $960
off-peak shoulder peak holiday spike
$500
$500
$640
$960
$960
$640
$500
$500
$960
$960
$640
$500
J
F
M
A
M
J
J
A
S
O
N
D
Cheapest month
December
~$500 · off-peak
Most expensive
October
~$960 · peak
Peak months
Apr, May, Sep, Oct
avoid these for budget