
Discover tips and strategies to find the most affordable flight options for your journey from San Sebastian (EAS) to Chicago (CHI). 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 November 5, 2026.
Round-trip from | $818 (Iberia) |
|---|---|
One-way from | $799 (Finnair) |
Fly from
Fly to
Route
Depart
Return
San SebastianChicago
EAS San Sebastián - ORD Chicago O'Hare Intl
EASORD
San Sebastián
Mon 12/14
9:20 am-2:55 pm
1 stop12h 35m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
San SebastianChicago
EAS San Sebastián - ORD Chicago O'Hare Intl
EASORD
San Sebastián
Wed 1/27
9:20 am-2:55 pm
1 stop12h 35m
Chicago O'Hare Intl
Sun 1/31
5:40 pm-1:00 pm
1 stop12h 20m
San SebastianChicago
EAS San Sebastián - ORD Chicago O'Hare Intl
EASORD
San Sebastián
Wed 11/18
9:20 am-2:55 pm
1 stop12h 35m
Chicago O'Hare Intl
Sun 11/22
6:30 pm-8:40 am
2 stops31h 10m
San SebastianChicago
EAS San Sebastián - ORD Chicago O'Hare Intl
EASORD
San Sebastián
Wed 11/18
9:20 am-10:30 pm
2 stops20h 10m
Chicago O'Hare Intl
Sun 11/22
8:05 am-8:40 am
2 stops17h 35m
San SebastianChicago
EAS San Sebastián - ORD Chicago O'Hare Intl
EASORD
San Sebastián
Fri 11/20
9:20 am-2:55 pm
1 stop12h 35m
Chicago O'Hare Intl
Tue 11/24
4:58 pm-8:40 am
2 stops32h 42m
San SebastianChicago
EAS San Sebastián - ORD Chicago O'Hare Intl
EASORD
San Sebastián
Tue 11/17
9:20 am-2:55 pm
1 stop12h 35m
Chicago O'Hare Intl
Sat 11/21
8:47 pm-1:00 pm
2 stops33h 13m
San SebastianChicago
EAS San Sebastián - ORD Chicago O'Hare Intl
EASORD
San Sebastián
Tue 11/17
9:30 pm-4:55 pm
2 stops26h 25m
Chicago O'Hare Intl
Sat 11/21
5:29 pm-1:00 pm
2 stops36h 31m
San SebastianChicago
EAS San Sebastián - ORD Chicago O'Hare Intl
EASORD
San Sebastián
Fri 11/20
9:20 am-2:55 pm
1 stop12h 35m
Chicago O'Hare Intl
Tue 11/24
5:40 pm-8:40 am
1 stop32h 00m
San SebastianChicago
EAS San Sebastián - ORD Chicago O'Hare Intl
EASORD
San Sebastián
Mon 11/16
11:35 am-10:00 am
2 stops29h 25m
Chicago O'Hare Intl
Fri 11/20
3:50 pm-1:05 pm
3 stops38h 15m
Everything you need to know about your flight from San Sebastian to Chicago
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