C$404 Cheap Flights from Dublin (DUB) to Washington D.C. (WASA)

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Find the cheapest month or even day of the year to fly to Washington D.C.

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Flight deals from Dublin to Washington D.C.

Looking for a cheap last-minute deal or the best return flight from Dublin Airport to Washington D.C.? If you want to travel next month, return fares start from C$748. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Dublin to Washington D.C.

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Dublin to Washington D.C. flights are currently cheapest in May.

Which airlines fly from Dublin to Washington D.C.?

Dublin to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight foundC$404
Cheapest month to flyMay
Average flight time8 hrs, 7 mins
Most popular airlineAer Lingus
Average flights per week93

Finding cheap flights from Dublin to Washington D.C.: Frequently asked questions

There are 5 airports in Washington D.C.: Washington Ronald Reagan, Camp Springs Andrews AFB, Washington Dulles, Baltimore Washington International, and Manassas.
The best price we found for a return flight from Dublin to Washington D.C. is C$671. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
8 hours and 7 minutes is the average flight time from Dublin to Washington D.C..
Aer Lingus, Iberia and British Airways fly direct from Dublin to Washington D.C..
As of April 2026, there are 93 flights per week flying from Dublin to Washington D.C..
The cheapest month to fly from Dublin to Washington D.C. is usually November.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Dublin Airport to Washington D.C. on Friday, November 6, 2026.
Yes – the average flight time is 8 hours and 7 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Washington D.C. but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.
In April, the average temperature is usually around 12°C. July is typically the warmest month in Washington D.C., when it usually averages around 31°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging -4°C. The rainiest month is September.
Currently, Icelandair and Aer Lingus offer the cheapest flight tickets to Washington D.C..

Travelling from Dublin Airport (DUB) to Washington DC: what you need to know

  • Washington DC is 4 hours behind Dublin, where Dublin Airport is located. Washington DC operates on the UTC-4 timezone.

  • Dublin Airport (DUB) to Washington Dulles International Airport (IAD) is the most popular route, with 28 weekly flights to choose from. If you have things to do before heading off, the last flight from DUB to IAD is with Aer Lingus at 16:40. Opt for the first departure with Aer Lingus at 11:45 if you want to get on your way earlier.

  • Give yourself plenty of time to make your flight from DUB to Washington DC. As a general rule, turn up at least two hours before international departures and an hour ahead for domestic flights.

  • You can expect longer lines in popular months such as August and other peak periods. Arriving up to fours hours ahead of international flights and two hours for a domestic departure will give you plenty of time for security and boarding.

  • You can catch a direct flight from Dublin Airport to Washington DC that arrives at Washington Dulles International Airport (IAD).

  • Book your seat with Aer Lingus. This leading carrier offers direct flights from Dublin Airport to Washington DC.

  • A stopover is the ideal opportunity to take a break from travelling — and possibly even tour another city. When browsing flights from DUB to Washington DC, uncheck the 'Direct flights only' box to see where you can visit along the way. Here are some popular options to consider:

    • Bradley International Airport (BDL)

    • Logan International Airport (BOS)

    • Keflavik International Airport (KEF)

  • If you hold a passport from Ireland, you will need an ETA to enter United States. This applies when booking a cheap ticket from Dublin Airport to Washington DC for tourism purposes. The rules may differ if you're travelling for work or other reasons. Always check the visa rules ahead of booking and certainly before you fly.

  • The journey from central Dublin to DUB takes about 2 hours and 9 minutes by public transport. If you drive, ride-share or get a cab, you'll cover the 21 kilometres in 29 minutes or so, depending on traffic conditions.

  • Looking for a handy hotel close to DUB? If you're catching an early flight from Dublin Airport to Washington DC, these accommodation options will have you moments from your departure gate:

How to find the cheapest flights from Dublin Airport (DUB) to Washington DC

  • The best price we've found for a one-way ticket from Dublin Airport to Washington DC is C$404. The cheapest price for a return flight is C$671. Remember fares can change due to demand at the time of booking.

  • To pick up cheap tickets from DUB to Washington DC, book your journey 4 months ahead of your departure date.

  • Organize your trip for December. That's the cheapest month for tickets from Dublin Airport to Washington DC. If you have flexibility with your dates, use the 'Whole month' tool to find the cheapest price across each month.

  • Create a Price Alert for cheap tickets from DUB to Washington DC. You don't need to look every day to see if fares have dropped. We'll tell you as soon as there's a change in price.

  • Use the filters to tailor your flights from Dublin Airport to Washington DC. Select your ideal departure and arrival times, number of stops and airlines. Or sort your results by 'Cheapest' to see the best deals.

Airports in Washington DC

Ronald Reagan National Airport (DCA)

  • Ronald Reagan National Airport (DCA) to central Washington DC is roughly 8 kilometres. It'll take you about 16 minutes to reach the centre driving.

  • It typically takes 43 minutes if you're travelling on public transport.

  • If you have a late flight from Dublin Airport to Washington DC, few things beat the convenience of staying close to the terminal. Pick up your bags from the carousel and then be showered and relaxing soon after at one of these hotels near DCA:

Washington Dulles International Airport (IAD)

Best time to go to Washington DC

  • It's time to figure out your trip dates for your flight from Dublin Airport to Washington DC. July is the busiest month for a trip to Washington DC. If you want a quieter atmosphere, go in May.

  • Lock in your flight from Dublin Airport to Washington DC for July to experience the city during its warmest month. Expect temperatures to range from 19ºC to 33ºC.

  • Look for cheap flights from DUB to Washington DC in January if you want to travel in cooler conditions. Temperatures are at their lowest around then, ranging between -6ºC and 10ºC on average.

More about Washington DC

  • After locking in your flight from Dublin Airport to Washington DC, think about where you'd like to stay in this city. Make one of these options your base for exploring Washington DC:

  • All great vacations should include a little sightseeing. White House Historical Association, The White House and National Mall are must-do's during your Washington DC adventure.

Complete your Washington DC trip with a car rental

  • Select one of our car rentals in Washington DC and see the sights on your own schedule. Easily compare companies in one go to find the ideal ride once you've booked your hotel and cheap flights from Dublin Airport to Washington DC.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.