€222 Find Cheap Flights from Washington Dulles Airport to Ireland

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Ireland departing on 13/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Best Ireland Flight Deals from Dulles Intl

Cheapest return prices found by our users on KAYAK in the last 72 hours

Dublin
Dublin1 stop€360
Cork
Cork2 stops€449
Shannon
Shannon1 stop€481
Knock
Knock2 stops€715
Milltown (Kerry)
Milltown (Kerry)2 stops€799
Dublin
Dublin1 stop€360
Cork
Cork2 stops€449
Shannon
Shannon1 stop€481
Knock
Knock2 stops€715
Milltown (Kerry)
Milltown (Kerry)2 stops€799

Cheap Flight Deals from Dulles Intl to Ireland (IAD-IE0)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Dulles Intl to Ireland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Dulles Intl to Ireland

Fri, 26 Sep - Sat, 11 Oct
Icelandair Logo
20:30 - 13:15IAD-DUB
11h 45m1 stop
Icelandair Logo
14:15 - 22:10DUB-IAD
12h 55m1 stop
€360Icelandair
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Sun, 27 Jul - Wed, 6 Aug
Aer Lingus Logo
17:20 - 05:10IAD-DUB
6h 50mdirect
Aer Lingus Logo
16:35 - 19:30DUB-IAD
7h 55mdirect
€368Aer Lingus
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Wed, 8 Oct - Tue, 14 Oct
TAP AIR PORTUGAL Logo
17:50 - 18:05IAD-DUB
19h 15m1 stop
TAP AIR PORTUGAL Logo
18:50 - 20:50DUB-IAD
31h 00m1 stop
€377TAP AIR PORTUGAL
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Sun, 25 May - Tue, 3 Jun
Air Canada Logo
14:25 - 08:15IAD-DUB
12h 50m1 stop
Air Canada Logo
09:20 - 21:08DUB-IAD
16h 48m1 stop
€402Air Canada
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Tue, 27 May - Tue, 3 Jun
United Airlines Logo
19:05 - 07:10IAD-DUB
7h 05mdirect
United Airlines Logo
09:20 - 11:53DUB-IAD
31h 33m2 stops
€404United Airlines
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Sun, 14 Sep - Tue, 23 Sep
United Airlines Logo
22:10 - 09:45IAD-DUB
30h 35m1 stop
United Airlines Logo
09:20 - 11:54DUB-IAD
31h 34m2 stops
€413United Airlines
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Sun, 25 May - Wed, 4 Jun
 Logo
20:45 - 17:50IAD-DUB
16h 05m1 stop
 Logo
09:50 - 21:08DUB-IAD
16h 18m2 stops
€423
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Wed, 16 Jul - Thu, 24 Jul
Air Canada Logo
14:25 - 08:15IAD-DUB
12h 50m1 stop
Air Canada Logo
09:50 - 21:01DUB-IAD
16h 11m2 stops
€427Air Canada
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Tue, 8 Jul - Wed, 23 Jul
 Logo
09:45 - 08:15IAD-DUB
17h 30m2 stops
 Logo
13:00 - 16:15DUB-IAD
32h 15m1 stop
€428
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Thu, 25 Sep - Mon, 29 Sep
TAP AIR PORTUGAL Logo
22:20 - 18:05IAD-DUB
14h 45m1 stop
TAP AIR PORTUGAL Logo
18:50 - 15:20DUB-IAD
25h 30m1 stop
€440TAP AIR PORTUGAL
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KAYAK's insights & trends for Dulles Intl to Ireland flights

Get data-powered insights and trends into flights from Dulles Intl to Ireland to help you find the cheapest flights, the best time to fly, and much more.

What is the cheapest Washington, D.C. Dulles Intl Airport to Ireland flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Washington, D.C. Dulles Intl Airport to Ireland.

The cheapest ticket to Ireland from Washington, D.C. Dulles Intl Airport found in the last 72 hours was to Dublin, at €566 return. The most popular route is from Washington, D.C. Dulles Intl Airport (IAD) to Dublin (DUB), and the cheapest round-trip airline ticket found on this route in the last 72 hours was €566.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Ireland?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Ireland, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Ireland is November, when tickets cost €502 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of return tickets is €904 and €821 respectively.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Ireland?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Ireland clicked on KAYAK for each day over the last 12 months.

For Washington Dulles Airport to Ireland, Wednesday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from Ireland back to Washington Dulles Airport, the best deals are generally found on Monday, with Saturday being the most expensive.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Ireland?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Ireland, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on the flight from Washington, D.C. Dulles Intl Airport to Ireland, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.


Good to know

Low seasonFebruary
High seasonMay
Cheapest flight€222
Best time to beat the crowds (27% less expensive on average)
Most popular time to fly (6% more expensive on average)
Flight from Washington Dulles Airport to Shannon

FAQs - booking Ireland flights

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Ireland?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Ireland.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Ireland?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington Dulles Airport to Ireland is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Ireland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Washington Dulles Airport to Ireland with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Ireland?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Washington Dulles Airport to Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Ireland?

    The cheapest time of day to fly to Ireland is generally at night, when retur flights cost €729 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Ireland is generally in the evening, which is peak travel time and where the average cost of a ticket is €880.

Everything you need to know for your flight from Dulles Intl to Ireland

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