Finnair flights from Chicago O'Hare (ORD) to Louisville (SDF).

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 20:20 Chicago O'Hare (ORD) 3 22:59 Louisville (SDF)
Finnair AY 3666 Non-stop Embraer EMB 175 (E75) 1:39 Effective 2026-05-21 through 2026-07-01
Codeshare flight, operated by American Airlines.(AA 4603)
Daily 20:20 Chicago O'Hare (ORD) 3 23:03 Louisville (SDF)
Finnair AY 3666 Non-stop Embraer EMB 175 (E75) 1:43 Effective 2026-07-02 through 2026-08-04
Codeshare flight, operated by American Airlines.(AA 4603)
Daily 20:20 Chicago O'Hare (ORD) 3 23:01 Louisville (SDF)
Finnair AY 3666 Non-stop Embraer EMB 175 (E75) 1:41 Effective 2026-08-05 through 2026-08-14
Codeshare flight, operated by American Airlines.(AA 4603)
Tue-Fri,Sun 20:20 Chicago O'Hare (ORD) 3 23:01 Louisville (SDF)
Finnair AY 3666 Non-stop Embraer EMB 175 (E75) 1:41 Effective 2026-08-16 through 2026-09-04
Codeshare flight, operated by American Airlines.(AA 4603)
Tue,Sat,Sun 20:20 Chicago O'Hare (ORD) 3 23:01 Louisville (SDF)
Finnair AY 3666 Non-stop Embraer EMB 175 (E75) 1:41 Effective 2026-09-05 through 2026-09-08
Codeshare flight, operated by American Airlines.(AA 4603)
Tue-Sun 20:20 Chicago O'Hare (ORD) 3 22:58 Louisville (SDF)
Finnair AY 3666 Non-stop Embraer EMB 175 (E75) 1:38 Effective 2026-09-09 through 2026-09-27
Codeshare flight, operated by American Airlines.(AA 4603)
Daily 20:20 Chicago O'Hare (ORD) 3 22:58 Louisville (SDF)
Finnair AY 3666 Non-stop Embraer EMB 175 (E75) 1:38 Effective 2026-09-28 through 2026-10-04
Codeshare flight, operated by American Airlines.(AA 4603)
Daily 20:20 Chicago O'Hare (ORD) 3 22:55 Louisville (SDF)
Finnair AY 3666 Non-stop Embraer EMB 175 (E75) 1:35 Effective 2026-10-05 through 2026-10-24
Codeshare flight, operated by American Airlines.(AA 4603)
Tue,Fri 20:20 Chicago O'Hare (ORD) 3 22:55 Louisville (SDF)
Finnair AY 3666 Non-stop Embraer EMB 175 (E75) 1:35 Effective from 2026-10-27
Codeshare flight, operated by American Airlines.(AA 4603)




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Finnair flights from Chicago O'Hare (ORD) to Louisville (SDF).
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Finnair AY3666
20:20
Chicago O'Hare (ORD) 3

22:59
Louisville (SDF)
Effective 2026-05-21 through 2026-07-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4603)
Duration: 1:39, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Finnair AY3666
20:20
Chicago O'Hare (ORD) 3

23:03
Louisville (SDF)
Effective 2026-07-02 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4603)
Duration: 1:43, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Finnair AY3666
20:20
Chicago O'Hare (ORD) 3

23:01
Louisville (SDF)
Effective 2026-08-05 through 2026-08-14
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4603)
Duration: 1:41, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Finnair AY3666
20:20
Chicago O'Hare (ORD) 3

23:01
Louisville (SDF)
Effective 2026-08-16 through 2026-09-04
Mon
-
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 4603)
Duration: 1:41, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Finnair AY3666
20:20
Chicago O'Hare (ORD) 3

23:01
Louisville (SDF)
Effective 2026-09-05 through 2026-09-08
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4603)
Duration: 1:41, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Finnair AY3666
20:20
Chicago O'Hare (ORD) 3

22:58
Louisville (SDF)
Effective 2026-09-09 through 2026-09-27
Mon
-
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4603)
Duration: 1:38, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Finnair AY3666
20:20
Chicago O'Hare (ORD) 3

22:58
Louisville (SDF)
Effective 2026-09-28 through 2026-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4603)
Duration: 1:38, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Finnair AY3666
20:20
Chicago O'Hare (ORD) 3

22:55
Louisville (SDF)
Effective 2026-10-05 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4603)
Duration: 1:35, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Finnair AY3666
20:20
Chicago O'Hare (ORD) 3

22:55
Louisville (SDF)
Effective from 2026-10-27
Mon
-
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 4603)
Duration: 1:35, non-stop
Embraer EMB 175 (E75)
  • A domestic route departing from the Chicago O'Hare airport (ORD) and arriving at Louisville airport (SDF).
  • The flight distance is 287 miles, or 461 km.
  • The timezone of the departure airport is UTC-6 , and the timezone of the arrival airport is UTC-5 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
  • For direct flights, the flight time varies between 1:35 and 1:43.
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