Question 1

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

Accepted Answer

On average, the least expensive day to fly to Washington, D.C. from Ireland is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $685. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Ireland to Washington, D.C. for around $905.

Question 2

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

Accepted Answer

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

Question 3

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

Accepted Answer

At noon is the cheapest time of day to fly from Ireland to Washington, D.C. when you can find flight prices for as low as $558. Flying to Washington, D.C. at noon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $822. Of course, these prices can vary depending on the time of year and what airport you fly to.

Question 4

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

Accepted Answer

There are 3 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 5

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 least number of delays on this route over the last 12 months; with about 14% of their flights experiencing any sort of delay.

Question 6

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

Accepted Answer

84 flights are operational weekly from Ireland to Washington, D.C. as of December 2025. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

Question 7

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

Accepted Answer

Flight times from Ireland to Washington, D.C. vary, but if you’re flying out of Dublin and flying into Washington, D.C. Dulles Intl Airport (one of the most popular routes), then the duration is 7h 55m on average. Another popular route from Ireland to Washington, D.C. is flying from Shannon to Washington, D.C. Dulles Intl Airport, which will take roughly 12h 45m. Keep in mind that layovers or delays could extend your travel time.

Question 8

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

Accepted Answer

As of December 2025, there are 12 flights per day flying from Ireland to Washington, D.C.. The most common time of day flights depart is 12:00PM, with 100% of flights taking off in the afternoon.

Question 9

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 $596 when searching weeks out. 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 $502 on momondo.

Question 10

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

Accepted Answer

The month of February is, on average, the cheapest month to fly to Washington, D.C. from Ireland, with most prices found around $494. If you’re not able to fly to Washington, D.C. in February, then January is your next best option. Flight prices from Ireland to Washington, D.C. during January average around $500.

Question 11

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 12

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

Accepted Answer

No. A direct flight is the cheapest option for a flight between Ireland to Washington, D.C..

Question 13

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 14

What 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 65% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 3 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

Question 15

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

Accepted Answer

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

Question 16

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 in the morning have, in the past, seen delays more frequently in comparison.

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. were last updated today.

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 3 as of December 2025.

Question 19

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

Accepted Answer

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 travel and health documents you'll need for your trip to Washington, D.C. may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C.. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best Price Found	$483
Fastest flight time	7h 55m
Direct flights	Every day
Airports in Washington, D.C.	2 airports

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom $425	Free Cancellation	Rating 7.0 589 reviews	Search Icelandair flights
Aer Lingus	PriceFrom $454	Free Cancellation	Rating 7.2 1,392 reviews	Search Aer Lingus flights
United Airlines	PriceFrom $643	Free Cancellation	Rating 7.4 9,095 reviews	Search United Airlines flights

Cheap flights from Ireland to Washington, D.C. from $345

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 5/19. 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 3 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?

No. A direct flight is the cheapest option for a flight between Ireland to Washington, D.C..

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

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

What 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 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 which experiences the fewest number of 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 least number of 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, there are 12 flights per day flying from Ireland to Washington, D.C.. The most common time of day flights depart is 12:00PM, with 100% of flights taking off in the afternoon.

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

84 flights are operational weekly from Ireland to Washington, D.C. as of December 2025. The most popular departure day for this route is Mon, with 14% of flights per week 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.?

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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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