Aer Lingus flight EI 7521: Multiple routes

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FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 06:45 Chicago O'Hare (ORD) 3 08:55 Indianapolis (IND)
EI 7521 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:10 Effective 2026-03-08 through 2026-04-06
Codeshare flight, operated by American Airlines.(AA 3512)
Daily 06:45 Chicago O'Hare (ORD) 3 09:23 Seattle-Tacoma (SEA)
EI 7521 Non-stop Boeing 737-800 (738) 4:38 Effective 2026-04-07 through 2026-05-20
Codeshare flight, operated by American Airlines.(AA 2775)
Daily 06:45 Chicago O'Hare (ORD) 3 09:21 Seattle-Tacoma (SEA)
EI 7521 Non-stop Airbus A321 (321) 4:36 Effective 2026-07-02 through 2026-08-04
Codeshare flight, operated by American Airlines.(AA 2529)
Thu 16:19 Chicago O'Hare (ORD) 3 18:34 Indianapolis (IND)
EI 7521 Non-stop Embraer EMB 175 (E75) 1:15 Operates only on 2026-01-01
Codeshare flight, operated by American Airlines.(AA 4417)
Daily 22:00 Chicago O'Hare (ORD) 3 23:59 Indianapolis (IND)
EI 7521 Non-stop Embraer EMB 175 (E75) 0:59 Effective 2026-05-21 through 2026-07-01
Codeshare flight, operated by American Airlines.(AA 4455)
Daily 22:07 Chicago O'Hare (ORD) 3 00:10 Indianapolis (IND)
EI 7521 Non-stop Airbus A319 (319) 1:03 Effective 2026-08-05 through 2026-09-08
Codeshare flight, operated by American Airlines.(AA 2174)
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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Aer Lingus flight EI 7521: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Aer Lingus EI7521
06:45
Chicago O'Hare (ORD) 3

08:55
Indianapolis (IND)
Effective 2026-03-08 through 2026-04-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3512)
Duration: 1:10, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Codeshare Flights:
Aer Lingus EI7521
06:45
Chicago O'Hare (ORD) 3

09:23
Seattle-Tacoma (SEA)
Effective 2026-04-07 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2775)
Duration: 4:38, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Aer Lingus EI7521
06:45
Chicago O'Hare (ORD) 3

09:21
Seattle-Tacoma (SEA)
Effective 2026-07-02 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2529)
Duration: 4:36, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Aer Lingus EI7521
16:19
Chicago O'Hare (ORD) 3

18:34
Indianapolis (IND)
Operates only on 2026-01-01
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 4417)
Duration: 1:15, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Aer Lingus EI7521
22:00
Chicago O'Hare (ORD) 3

23:59
Indianapolis (IND)
Effective 2026-05-21 through 2026-07-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4455)
Duration: 0:59, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Aer Lingus EI7521
22:07
Chicago O'Hare (ORD) 3

00:10(+1)
Indianapolis (IND)
Effective 2026-08-05 through 2026-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2174)
Duration: 1:03, non-stop
Airbus A319 (319)
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 Aer Lingus flights
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