Iberia
flight
IB 4278:
Multiple routes
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FLIGHT SCHEDULE
Direct Codeshare Flights:
Iberia IB4278
Effective 2026-05-21 through 2026-07-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1423)
Duration: 3:32, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Iberia IB4278
Effective 2026-02-12 through 2026-02-19
Mon
Tue
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Wed
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Thu
Fri
Sat
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Sun
Codeshare flight, operated by American Airlines.
(AA 3718)
Duration: 1:38, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Iberia IB4278
Effective 2026-02-22 through 2026-03-06
Mon
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Tue
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Wed
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Thu
Fri
Sat
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Sun
Codeshare flight, operated by American Airlines.
(AA 3718)
Duration: 1:38, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Iberia IB4278
Effective 2026-03-08 through 2026-04-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 3718)
Duration: 1:38, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Iberia IB4278
Effective 2026-07-02 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1411)
Duration: 3:36, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Iberia IB4278
Effective 2026-01-06 through 2026-01-18
Mon
Tue
Wed
Thu
Fri
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-
Sat
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Sun
Codeshare flight, operated by American Airlines.
(AA 3718)
Duration: 1:40, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Iberia IB4278
Effective 2026-01-20 through 2026-02-11
Mon
-
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Tue
Wed
Thu
Fri
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Sat
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-
Sun
Codeshare flight, operated by American Airlines.
(AA 3718)
Duration: 1:40, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Iberia IB4278
Effective 2026-01-09 through 2026-01-16
Mon
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Tue
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Wed
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Thu
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Fri
Sat
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Sun
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Codeshare flight, operated by American Airlines.
(AA 3718)
Duration: 1:40, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Iberia IB4278
Effective 2026-01-19 through 2026-02-09
Mon
Tue
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-
Wed
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Thu
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Fri
Sat
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-
Sun
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Codeshare flight, operated by American Airlines.
(AA 3718)
Duration: 1:40, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Iberia IB4278
Effective from 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1162)
Duration: 3:34, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Iberia IB4278
Effective 2026-04-07 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1820)
Duration: 3:27, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Iberia IB4278
Valid until 2026-01-05
Mon
Tue
Wed
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-
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 2404)
Duration: 3:26, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Iberia IB4278
Effective 2026-02-14 through 2026-02-21
Mon
-
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Tue
Wed
Thu
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Fri
Sat
Sun
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Codeshare flight, operated by American Airlines.
(AA 3718)
Duration: 1:37, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Iberia IB4278
Effective 2026-02-23 through 2026-03-07
Mon
Tue
Wed
Thu
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Fri
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Sat
Sun
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Codeshare flight, operated by American Airlines.
(AA 3718)
Duration: 1:37, non-stop Embraer EMB 175 (E75)
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This flight number is listed as serving the following routes:
- Austin (AUS) - Philadelphia (PHL)
- Dallas Fort Worth (DFW) - Harlingen (HRL)