Question 1

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

Accepted Answer

Fly from Dublin to Washington, D.C. Dulles Intl for the best Ireland - Washington, D.C. flight prices

Question 2

What is the cheapest day to depart on your flight to Washington, D.C.?

Accepted Answer

The cheapest day to depart from Ireland to Washington, D.C. is on a Thursday. Travellers who choose to depart for Washington, D.C. on a Thursday will often find tickets for as low as €622. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Washington, D.C. on Sunday is €791.

Question 3

How far in advance should I book a flight to Washington, D.C.?

Accepted Answer

You are more likely to see cheaper flights to Washington, D.C. from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around €510 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Ireland for as low as €426 on momondo.

Question 4

Can stopping save me money on Ireland to Washington, D.C. flights?

Accepted Answer

You could potentially save up to 14% on your flight if you consider stops on a Ireland to Washington, D.C. flight.

Question 5

What is the most punctual flight time for Ireland to Washington, D.C. flights?

Accepted Answer

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the morning have, in the past, seen delays more frequently in comparison.

Question 6

How many flights depart from Ireland to Washington, D.C. on average per day?

Accepted Answer

As of December 2025, 2 flights take off from Ireland and land in Washington, D.C. each day. The most common flight departure time for this route is 12:00, with 100% of daily flights taking off in the afternoon.

Question 7

What is the cheapest airline that flies from Ireland to Washington, D.C.?

Accepted Answer

Icelandair, TAP AIR PORTUGAL, and British Airways are the most popular carriers operating from Ireland to Washington, D.C.

Question 8

Which airlines fly to Washington, D.C.?

Accepted Answer

Aer Lingus, United Airlines and Icelandair are the top three most popular airlines that fly to Washington, D.C. from Ireland according to our data. Aer Lingus is the first choice among our users, with 61% of people opting to fly with this airline when travelling to Washington, D.C.. Keep in mind that there are 4 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

Question 9

How long does it take to fly to Washington, D.C.?

Accepted Answer

The flight from Ireland to Washington, D.C. depends on which airports you’re departing from and arriving to, and whether or not you have a layover. If you fly from Dublin (a popular airport in Ireland) to Washington, D.C. Dulles Intl Airport (the most popular airport in Washington, D.C.), then the flight time is 7h 55m on average. If you fly from Cork (another popular airport in Ireland) to Washington, D.C. Dulles Intl Airport, then the average flight time is 15h 05m.

Question 10

What cabin class options are available on Ireland to Washington, D.C. flights?

Accepted Answer

There are 2 cabin classes available to choose from on Ireland to Washington, D.C. flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Question 11

What is the cheapest time of day to depart on your flight to Washington, D.C.?

Accepted Answer

Flying to Washington, D.C. from Ireland at midday is the least expensive time of day to depart. momondo users have found prices as low as €416 when looking at flights departing at midday. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are €690 on average. Flights to Washington, D.C. from Ireland in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

Question 12

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Sunday is statistically the day of the week that experiences the fewest delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

Question 13

What is the cheapest month to fly to Washington, D.C.?

Accepted Answer

The cheapest month to fly to Washington, D.C. from Ireland is in February. Flight prices, which tend to average around €419, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Washington, D.C. from Ireland during January instead. Flights to Washington, D.C. in January, while not as cheap as those in February, still average around €424.

Question 14

How often are flights from Ireland to Washington, D.C. delayed?

Accepted Answer

Historically, on average around 14% of flights between Ireland and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 152 minutes.

Question 15

How many flights depart from Ireland to Washington, D.C. on average per week?

Accepted Answer

As of December 2025, there are 18 flights per week flying from Ireland to Washington, D.C.. The most common day of the week flights depart is Mon, with 17% of flights taking off on this day.

Question 16

Which airline has the best punctuality record on Ireland to Washington, D.C. flights?

Accepted Answer

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 14% of their flights experiencing any sort of delay.

Question 17

When did momondo last update prices for flights from Ireland to Washington, D.C.?

Accepted Answer

Prices for flights from Ireland to Washington, D.C. refresh daily.

Question 18

How many operators does momondo search for flights from Ireland to Washington, D.C.?

Accepted Answer

The number of operators available for flights from Ireland to Washington, D.C. is 4 as of December 2025.

Question 19

How old do you have to be to fly from Ireland to Washington, D.C.?

Accepted Answer

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Ireland to Washington, D.C..

Question 20

What documentation or ID do you need to fly to Washington, D.C.?

Accepted Answer

The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best price found	€505
Fastest flight time	7h 55m
Direct flights	Every day
Airports in Washington, D.C.	2 airports

Airline	Rating	Free Cancellation	Price
PLAY	PriceFrom €243	Free Cancellation	Rating 7.0 103 reviews	Search PLAY flights
Aer Lingus	PriceFrom €310	Free Cancellation	Rating 7.2 1,412 reviews	Search Aer Lingus flights
Icelandair	PriceFrom €314	Free Cancellation	Rating 7.0 592 reviews	Search Icelandair flights
United Airlines	PriceFrom €426	Free Cancellation	Rating 7.4 9,115 reviews	Search United Airlines flights

Cheap flights from Ireland to Washington, D.C. from €294

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to Washington, D.C. departing on 28/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Ireland to Washington, D.C.

What is the cheapest month to fly to Washington, D.C.?

What is the cheapest day to depart on your flight to Washington, D.C.?

What is the cheapest time of day to depart on your flight to Washington, D.C.?

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

Fly from Dublin to Washington, D.C. Dulles Intl for the best Ireland - Washington, D.C. flight prices

How far in advance should I book a flight to Washington, D.C.?

What cabin class options are available on Ireland to Washington, D.C. flights?

There are 2 cabin classes available to choose from on Ireland to Washington, D.C. flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Ireland to Washington, D.C. flights?

You could potentially save up to 14% on your flight if you consider stops on a Ireland to Washington, D.C. flight.

What is the cheapest airline that flies from Ireland to Washington, D.C.?

Icelandair, TAP AIR PORTUGAL, and British Airways are the most popular carriers operating from Ireland to Washington, D.C.

Which airlines fly to Washington, D.C.?

How often are flights from Ireland to Washington, D.C. delayed?

Historically, on average around 14% of flights between Ireland and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 152 minutes.

What is the most punctual flight time for Ireland to Washington, D.C. flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the morning have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Sunday is statistically the day of the week that experiences the fewest delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Ireland to Washington, D.C. flights?

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 14% of their flights experiencing any sort of delay.

How many flights depart from Ireland to Washington, D.C. on average per day?

As of December 2025, 2 flights take off from Ireland and land in Washington, D.C. each day. The most common flight departure time for this route is 12:00, with 100% of daily flights taking off in the afternoon.

How many flights depart from Ireland to Washington, D.C. on average per week?

As of December 2025, there are 18 flights per week flying from Ireland to Washington, D.C.. The most common day of the week flights depart is Mon, with 17% of flights taking off on this day.

How long does it take to fly to Washington, D.C.?

Cheap Ireland to Washington, D.C. flight deals and tips

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When did momondo last update prices for flights from Ireland to Washington, D.C.?

How many operators does momondo search for flights from Ireland to Washington, D.C.?

How old do you have to be to fly from Ireland to Washington, D.C.?

What documentation or ID do you need to fly to Washington, D.C.?

What is the most popular plane model from Ireland to Washington, D.C.?

Best airlines flying from Ireland to Washington, D.C.

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