Aer Lingus Flight EI3403 Deals & Information (2025/2026)

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Aer Lingus Flight 3403 Route Deals From $34

The cheapest prices found with in the last 7 days for return flights were $64 and $34 for one-way flights to Dublin for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, May 22 - Mon, May 26
CFN
Donegal
DUB
Dublin
$64 Roundtrip, found 17 hours ago
$64
Roundtrip
found 17 hours ago
Select Aer Lingus flight, departing Thu, May 22 from Donegal to Dublin, returning Mon, May 26, priced at $64 found 17 hours ago
Thu, Jun 5 - Wed, Jun 11
CFN
Donegal
DUB
Dublin
$66 Roundtrip, found 5 days ago
$66
Roundtrip
found 5 days ago
Select Aer Lingus flight, departing Thu, Jun 5 from Donegal to Dublin, returning Wed, Jun 11, priced at $66 found 5 days ago
Mon, Sep 8 - Sat, Sep 13
CFN
Donegal
DUB
Dublin
$67 Roundtrip, found 5 days ago
$67
Roundtrip
found 5 days ago
Select Aer Lingus flight, departing Mon, Sep 8 from Donegal to Dublin, returning Sat, Sep 13, priced at $67 found 5 days ago
Thu, May 22 - Mon, May 26
CFN
Donegal
DUB
Dublin
$96 Roundtrip, found 17 hours ago
$96
Roundtrip
found 17 hours ago
Select Aer Lingus flight, departing Thu, May 22 from Donegal to Dublin, returning Mon, May 26, priced at $96 found 17 hours ago
Thu, Jun 5 - Wed, Jun 11
CFN
Donegal
DUB
Dublin
$105 Roundtrip, found 5 days ago
$105
Roundtrip
found 5 days ago
Select Aer Lingus flight, departing Thu, Jun 5 from Donegal to Dublin, returning Wed, Jun 11, priced at $105 found 5 days ago

Frequently asked questions

What route does flight number EI3403 take?
EI3403 operates from Donegal Airport to Dublin Airport and flies direct. This trip takes 55 minutes.
What kind of plane is on flight number EI3403?
The route for flight number EI3403 is predominantly Donegal Airport (CFN) to Dublin Airport, and the ATR 42 is the type of plane you’ll probably be traveling on.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your EI3403 flight with Travelocity, please visit our Customer Service Portal.