Washington Dulles to Dublin Flights (IAD to DUB): Nonstops, Flight Time and Arriving in Ireland

Two airlines fly it nonstop

Washington Dulles to Dublin is a well-established nonstop route. As of recent schedules, Aer Lingus flies it year-round and United flies it as well, with United's service heaviest from spring to autumn. Both depart Dulles in the evening and land in Dublin early the next morning; the return leaves Dublin around midday and reaches Washington in the afternoon.

Aer Lingus is the Irish flag carrier and connects onward to Cork, Shannon and Knock as well as to much of the UK and Europe. United is the Star Alliance option, useful if you are collecting miles there or connecting from a United domestic flight into Dulles. Aer Lingus also has a long-standing partnership with United and JetBlue that lets you connect onto its Dublin flights from other US cities.

Connecting itineraries through Boston, New York, Philadelphia or Chicago exist on both airlines and on American, but with two nonstops from Dulles there is rarely a reason to take one unless the fare difference is large.

Flight time and distance

Dulles to Dublin is roughly 3,400 miles (about 5,450 km), one of the shorter transatlantic crossings. Eastbound the flight takes about 6.5 to 7.5 hours with the jet stream behind you, which is a short night: you leave Washington after dinner and land in Dublin at breakfast time. Westbound it is longer at 7.5 to 8.5 hours, flown in daylight.

Because the eastbound flight is so short, many travellers arrive having slept two or three hours at most. Plan a gentle first morning in Dublin rather than a packed schedule.

Leaving from Washington Dulles

Dulles has one main terminal where every airline checks in, with gates in concourses A, B, C and D reached by the underground AeroTrain or, for some A gates, a walk. Aer Lingus and United's international departures generally use the B and C concourses, but your gate is only final on the day, so check the screens after security.

The Silver Line Metro now reaches Washington Dulles International Airport station, with a short covered walk to the terminal; from downtown Washington the ride is about an hour. Parking is in the hourly and daily garages and the economy lots with shuttles. For an evening transatlantic departure, arriving two and a half hours ahead is sensible: Dulles security runs long when the European bank leaves together between late afternoon and early evening.

Arriving at Dublin and getting into the city

Dublin Airport has two terminals. Aer Lingus uses Terminal 2; United also operates its US flights from Terminal 2 because that is where the US preclearance facility sits for the return journey. Arriving from the US, you pass Irish immigration: Ireland is not in the Schengen area, so this is a full passport check with a stamp for US visitors. E-gates are being expanded, but expect a queue when several North American flights land together around dawn.

Dublin Airport has no rail link, so the trip into the city is by road, about 10 km and 25 to 45 minutes depending on traffic:

• Dublin Express and Aircoach: private coaches to the city centre, with stops near O'Connell Street, Trinity College and the main hotels. Frequent and the usual choice.
• Dublin Bus: public routes such as the 16 and 41 run to the city centre more slowly and more cheaply; a Leap card or contactless payment works.
• Taxi: from the rank outside each terminal, metered, with a queue at peak arrival times.

US preclearance on the way home

This is the detail that catches people out. Flying Dublin to Dulles, you clear US Customs and Border Protection at Dublin Airport before boarding, in the preclearance area of Terminal 2. When you land at Dulles you walk off as a domestic passenger with no further immigration or customs, which saves time in Washington but costs it in Dublin. Airlines ask you to be at the airport about three hours before a US departure, and they mean it: you check in, pass Irish security, then join the US immigration queue, and if you are late at any stage the aircraft leaves without you.

When to fly and when to book

Summer is the peak, from June to August, when the nonstops fill with tourists and students and fares from Washington are at their highest. St. Patrick's Day week in mid-March brings a short spike of its own. Late April through May and September are the best months to visit: long days, the lightest rain of the year, and lower fares once US schools are back. November through February, apart from Christmas, is the cheapest time to fly; it is grey and damp but rarely very cold, and the pubs and museums are at their most relaxed.

For summer and St. Patrick's Day, book three to five months ahead. Otherwise six to ten weeks is usually enough.

Documents and entry

As of recent rules, US passport holders can visit Ireland for short tourist stays without a visa, and Ireland has no pre-travel authorisation to apply for. Your passport should be valid for the duration of the stay; the immigration officer sets the length of your permission with a stamp. Ireland is not part of the UK, so a trip onward to Belfast or across to Britain is a separate border, though the Common Travel Area means you will rarely be checked on the land crossing. If you plan to continue to Britain, check whether the UK Electronic Travel Authorisation applies to you.

Time zones and jet lag

Dublin is five hours ahead of Washington for most of the year, with a brief shift to four or six hours in March and late October when the clocks change on different dates. The eastbound overnight flight is short, so the jet lag is less about the time change than the lost sleep. Get outside into daylight on arrival, resist the afternoon nap and most people are fine by the second day. The return is a daytime flight and causes little trouble.

What travellers on this route get wrong

The most common mistake is arriving at Dublin Airport two hours before the flight home and discovering the US preclearance queue; three hours is the right target. The second is expecting a train from the airport into Dublin; there is none, so plan on the coach or a taxi. The third is packing for cold when the real issue is rain: a waterproof layer matters more than a heavy coat in any month.