Finnair flight AY 4178: Multiple routes

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FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon,Fri 11:45 Chicago O'Hare (ORD) 3 14:24 Seattle-Tacoma (SEA)
AY 4178 Non-stop Boeing 737-800 (738) 4:39 Effective 2026-09-11 through 2026-09-28
Codeshare flight, operated by American Airlines.(AA 1802)
Daily 22:00 Chicago O'Hare (ORD) 3 00:14 Indianapolis (IND)
AY 4178 Non-stop Embraer EMB 175 (E75) 1:14 Effective 2026-10-05 through 2026-10-24
Codeshare flight, operated by American Airlines.(AA 3350)
The flight arrives 1 day after departure.
Tue,Fri 22:00 Chicago O'Hare (ORD) 3 00:14 Indianapolis (IND)
AY 4178 Non-stop Embraer EMB 175 (E75) 1:14 Effective from 2026-10-27
Codeshare flight, operated by American Airlines.(AA 3350)
The flight arrives 1 day after departure.
Mon,Wed,Thu,Sat,Sun 22:05 Chicago O'Hare (ORD) 3 00:11 Indianapolis (IND)
AY 4178 Non-stop Boeing 737-800 (738) 1:06 Effective 2026-04-08 through 2026-04-30
Codeshare flight, operated by American Airlines.(AA 2919)
The flight arrives 1 day after departure.
Daily 22:05 Chicago O'Hare (ORD) 3 00:11 Indianapolis (IND)
AY 4178 Non-stop Boeing 737-800 (738) 1:06 Effective 2026-05-01 through 2026-05-20
Codeshare flight, operated by American Airlines.(AA 2919)
The flight arrives 1 day after departure.
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This flight number is listed as serving the following routes:


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Finnair flight AY 4178: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Finnair AY4178
11:45
Chicago O'Hare (ORD) 3

14:24
Seattle-Tacoma (SEA)
Effective 2026-09-11 through 2026-09-28
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 1802)
Duration: 4:39, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Finnair AY4178
22:00
Chicago O'Hare (ORD) 3

00:14(+1)
Indianapolis (IND)
Effective 2026-10-05 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3350)
Duration: 1:14, non-stop
Embraer EMB 175 (E75)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Finnair AY4178
22:00
Chicago O'Hare (ORD) 3

00:14(+1)
Indianapolis (IND)
Effective from 2026-10-27
Mon
-
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 3350)
Duration: 1:14, non-stop
Embraer EMB 175 (E75)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Finnair AY4178
22:05
Chicago O'Hare (ORD) 3

00:11(+1)
Indianapolis (IND)
Effective 2026-04-08 through 2026-04-30
Mon
Tue
-
Wed
Thu
Fri
-
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2919)
Duration: 1:06, non-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Finnair AY4178
22:05
Chicago O'Hare (ORD) 3

00:11(+1)
Indianapolis (IND)
Effective 2026-05-01 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2919)
Duration: 1:06, non-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.
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This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - Indianapolis (IND)
  • Chicago O'Hare (ORD) - Seattle-Tacoma (SEA)
All Finnair flights
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