$694 Cheap Aer Lingus flights Shannon (SNN) to Washington (IAD)

View $694 flight on Fri, Nov 28, 2025Opens in a new window

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$694 Cheap Aer Lingus flights Shannon (SNN) to Washington (IAD)

Prices were available within the past 7 days and start at $694 for one-way flights and $836 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aer Lingus
Sun, Sep 14 - Sun, Sep 21
SNN
Shannon
IAD
Washington
$836 Roundtrip, found 14 hours ago
$836
Roundtrip
found 14 hours ago
Select Aer Lingus flight, departing Sun, Sep 14 from Shannon to Washington, returning Sun, Sep 21, priced at $836 found 14 hours ago
Aer Lingus
Sat, Oct 4 - Tue, Oct 14
SNN
Shannon
IAD
Washington
$839 Roundtrip, found 1 day ago
$839
Roundtrip
found 1 day ago
Select Aer Lingus flight, departing Sat, Oct 4 from Shannon to Washington, returning Tue, Oct 14, priced at $839 found 1 day ago
Flights from Shannon (SNN) to Washington (IAD)
Origin airport
Shannon
Destination airport
Washington Dulles Intl.
Airlines serving
Aer Lingus, British Airways
Popular airline
Aer Lingus
Distance
3297 mi

Frequently asked questions

How much is an Aer Lingus flight from Shannon Airport (SNN) to Washington Dulles Intl. Airport (IAD)?
Scoring cheap one-way Aer Lingus flights from SNN to IAD from $694 on Expedia is a breeze — just filter by "Price (lowest to highest)." Alternatively, check out our affordable return fares from $836 for your next exciting vacation.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SNN to IAD with Aer Lingus?
Browse for return or one-way flights to Washington in January or February. You could find cheaper fares with Aer Lingus during these off-peak times.
What is the cheapest time to book flights from Shannon Airport (SNN) to Washington Dulles Intl. Airport (IAD) with Aer Lingus?
To discover cheap flights from SNN to IAD with Aer Lingus, begin searching about one month before your intended departure. You can save 17% when you book your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Another useful tip? Booking on Sunday can lead to average savings of 17% compared to Friday (the most expensive day).**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Aer Lingus fly nonstop from Shannon Airport (SNN) to Washington Dulles Intl. Airport (IAD)?
Click on the "Nonstop" filter when searching for direct Aer Lingus flights from SNN to IAD. You can also compare other airlines servicing the same nonstop route.
What is the earliest Aer Lingus flight from SNN to IAD?
Sort your results by "Early Morning" and "Morning" to see the earliest departures from SNN to IAD. Setting off early means you're 20% less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Aer Lingus fly into in Washington?
Jump on an Aer Lingus flight from Shannon Airport (SNN) to Washington, and you'll likely arrive at Washington Dulles Intl. Airport (IAD). This is the airline's primary hub here.
What kind of luggage can I take on an Aer Lingus flight from Shannon Airport (SNN) to Washington Dulles Intl. Airport (IAD)?
Aer Lingus lets passengers bring 1 checked-in bag weighing up to 50 lb with maximum dimensions of 62 inches on standard economy flights from SNN to IAD. You can also take 1 cabin bag in the cabin. This hand luggage must not exceed 21 inches x 15 inches x 9 inches and weigh no more than 22 lb. Baggage rules can differ depending on your cabin class and fare type, so double-check your booking or Aer Lingus's website to avoid any extra costs at the airport.
Why fly with Aer Lingus from SNN to IAD?
Aer Lingus makes traveling from SNN to IAD more enjoyable with a 4-star airline rating and a rewarding loyalty program. You even have the chance to collect points with Aer Lingus AerClub. Remember to join Expedia's free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Aer Lingus flight from Shannon Airport (SNN) to Washington Dulles Intl. Airport (IAD)?
Depending on the ticket type you purchased, a fee is typically charged if you change or cancel your flight more than 24 hours after it's been confirmed. To secure flexible fares, select our "No cancel fee" or "Changes included" filter when you search for flights. To learn more about canceling or changing your reservation, visit "Trips," select your flight and tick "Manage Booking."

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