Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Dublin to Washington, D.C. from $342

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Dublin to Washington, D.C. departing on 10/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Dublin to Washington, D.C.

Cheap round-trip flights

Icelandair Logo
11:30 am - 6:30 pmDUB-IAD
12h 00m1 stop
Icelandair Logo
7:40 pm - 10:15 amIAD-DUB
9h 35m1 stop
$372Icelandair
Find Deal
Tue, Nov 25 - Sun, Nov 30
Icelandair Logo
11:30 am - 6:30 pmDUB-IAD
12h 00m1 stop
Icelandair Logo
7:40 pm - 10:15 amIAD-DUB
9h 35m1 stop
$398Icelandair
Find Deal
Fri, Dec 5 - Mon, Dec 8
Logo
5:10 am - 4:50 pmDUB-IAD
15h 40m1 stop
Logo
8:30 pm - 5:45 pmIAD-DUB
16h 15m1 stop
$400
Find Deal
Fri, Oct 31 - Thu, Nov 6
Scandinavian Airlines Logo
7:05 pm - 5:15 pmDUB-IAD
27h 10m1 stop
Scandinavian Airlines Logo
8:30 pm - 10:00 amIAD-DUB
32h 30m2 stops
$401Scandinavian Airlines
Find Deal
Wed, Feb 11 - Wed, Feb 18
Scandinavian Airlines Logo
7:05 pm - 5:15 pmDUB-IAD
27h 10m1 stop
Scandinavian Airlines Logo
8:30 pm - 11:45 amIAD-DUB
34h 15m1 stop
$403Scandinavian Airlines
Find Deal
Wed, Feb 11 - Wed, Feb 18
Logo
5:55 am - 8:00 pmDUB-IAD
19h 05m1 stop
Logo
8:45 pm - 5:50 pmIAD-DUB
16h 05m1 stop
$404
Find Deal
Wed, Oct 1 - Wed, Oct 15
Aer Lingus Logo
4:20 pm - 8:30 pmDUB-IAD
8h 10mnonstop
Aer Lingus Logo
5:05 pm - 4:55 amIAD-DUB
6h 50mnonstop
$428Aer Lingus
Find Deal
Wed, Oct 29 - Wed, Nov 5
Aer Lingus Logo
4:35 pm - 7:30 pmDUB-IAD
7h 55mnonstop
Aer Lingus Logo
5:20 pm - 5:10 amIAD-DUB
6h 50mnonstop
$436Aer Lingus
Find Deal
Wed, Oct 1 - Wed, Oct 15
United Airlines Logo
9:00 am - 3:51 pmDUB-IAD
11h 51m1 stop
United Airlines Logo
10:20 pm - 10:20 amIAD-DUB
7h 00mnonstop
$444United Airlines
Find Deal
Wed, Nov 26 - Tue, Feb 24
United Airlines Logo
12:05 pm - 3:20 pmDUB-IAD
8h 15mnonstop
United Airlines Logo
10:20 pm - 10:20 amIAD-DUB
7h 00mnonstop
$449United Airlines
Find Deal
Wed, Nov 26 - Tue, Feb 24

United Airlines flights from Dublin to Washington, D.C. Dulles Intl Airport

Our best United Airlines deals on Dublin to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines
Nov 26
DUB9:00 amDublin
11h 51m
1 stop
IAD3:51 pmWashington, D.C. Dulles Intl
Feb 24
IAD10:20 pmWashington, D.C. Dulles Intl
7h 00m
DUB10:20 amDublin
$444
Find similar
United Airlines
Nov 26
DUB12:05 pmDublin
8h 15m
IAD3:20 pmWashington, D.C. Dulles Intl
Feb 24
IAD10:20 pmWashington, D.C. Dulles Intl
7h 00m
DUB10:20 amDublin
$449
Find similar
United Airlines
Oct 12
DUB8:50 amDublin
8h 00m
IAD11:50 amWashington, D.C. Dulles Intl
Oct 19
IAD10:19 pmWashington, D.C. Dulles Intl
28h 56m
2 stops
DUB8:15 amDublin
$461
Find similar

Air Canada flights from Dublin to Washington, D.C. Dulles Intl Airport

Our best Air Canada deals on Dublin to Washington, D.C. Dulles Intl Airport flight tickets
Air Canada
Nov 26
DUB9:00 amDublin
12h 27m
1 stop
IAD4:27 pmWashington, D.C. Dulles Intl
Feb 24
IAD1:20 pmWashington, D.C. Dulles Intl
12h 50m
2 stops
DUB7:10 amDublin
$451
Find similar
Air Canada
Oct 22
DUB9:50 amDublin
26h 28m
2 stops
IAD7:18 amWashington, D.C. Dulles Intl
Oct 31
IAD4:30 pmWashington, D.C. Dulles Intl
9h 40m
1 stop
DUB6:10 amDublin
$463
Find similar
Air Canada
Sep 26
DUB6:30 amDublin
19h 35m
2 stops
IAD9:05 pmWashington, D.C. Dulles Intl
Oct 5
IAD5:37 pmWashington, D.C. Dulles Intl
17h 58m
2 stops
DUB4:35 pmDublin
$722
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Dublin to Washington, D.C. Dulles Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Dublin to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 11/25

11:30 am-6:30 pm

1 stop12h 00m

Washington, D.C. Dulles Intl

Sun 11/30

7:40 pm-10:15 am

1 stop9h 35m

$372

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 12/5

11:30 am-6:30 pm

1 stop12h 00m

Washington, D.C. Dulles Intl

Mon 12/8

7:40 pm-10:15 am

1 stop9h 35m

$398

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 10/31

5:10 am-4:50 pm

1 stop15h 40m

Washington, D.C. Dulles Intl

Thu 11/6

8:30 pm-5:45 pm

1 stop16h 15m

$400

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 2/11

7:05 pm-5:15 pm

1 stop27h 10m

Washington, D.C. Dulles Intl

Wed 2/18

8:30 pm-10:00 am

2 stops32h 30m

$401

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 2/11

7:05 pm-5:15 pm

1 stop27h 10m

Washington, D.C. Dulles Intl

Wed 2/18

8:30 pm-11:45 am

1 stop34h 15m

$403

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 10/1

5:55 am-8:00 pm

1 stop19h 05m

Washington, D.C. Dulles Intl

Wed 10/15

8:45 pm-5:50 pm

1 stop16h 05m

$404

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 10/29

4:20 pm-8:30 pm

Nonstop8h 10m

Washington, D.C. Dulles Intl

Wed 11/5

5:05 pm-4:55 am

Nonstop6h 50m

$428

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 10/1

4:35 pm-7:30 pm

Nonstop7h 55m

Washington, D.C. Dulles Intl

Wed 10/15

5:20 pm-5:10 am

Nonstop6h 50m

$436

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 11/26

9:00 am-3:51 pm

1 stop11h 51m

Washington, D.C. Dulles Intl

Tue 2/24

10:20 pm-10:20 am

Nonstop7h 00m

$444

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 11/26

12:05 pm-3:20 pm

Nonstop8h 15m

Washington, D.C. Dulles Intl

Tue 2/24

10:20 pm-10:20 am

Nonstop7h 00m

$449

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Dublin to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

In general, February is the cheapest month to fly from Dublin to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $492. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $507.

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

Our data shows that Sunday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $733. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Dublin to Washington, D.C. Dulles Intl Airport for around $852.

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

Flying to Washington, D.C. Dulles Intl Airport from Dublin in the evening is the least expensive time of day to depart. momondo users have found prices as low as $580 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $810 on average. Flights to Washington, D.C. Dulles Intl Airport from Dublin in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

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

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Dublin when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $604 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Dublin for as low as $474 on momondo.

What cabin class options are available on Dublin to Washington, D.C. Dulles Intl flights?

There are 4 cabin classes available to choose from on Dublin to Washington, D.C. Dulles Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Dublin to Washington, D.C. Dulles Intl Airport flight prices changed over time?

As of September 2025, prices for Dublin to Washington, D.C. Dulles Intl Airport flights are approximately 34% more expensive when compared to flights at the same time last year.

When to book flights from Dublin to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Dublin to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Dublin to Washington, D.C. Dulles Intl Airport (DUB to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Dublin to Washington, D.C. Dulles Intl Airport

Best Price Found

$520

Fastest flight time

7h 55m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from Dublin in the past 72 hours is $520. The best round-trip flight deal from Dublin to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $724.
The fastest flight from Dublin to Washington, D.C. Dulles Intl Airport takes 7h 55m
Direct flights go from Dublin to Washington, D.C. Dulles Intl Airport every day.
Search flight deals

  • How far is Dublin to Washington, D.C. Dulles Intl by plane?

    Dublin and Washington, D.C. Dulles Intl are 3393.9 mi apart from one another. Typically, this will take 7h 55m by plane in normal conditions.

  • When did momondo last update prices for flights from Dublin Airport to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Dublin Airport to Washington, D.C. Dulles Intl Airport refresh daily.

  • How many operators does momondo search for flights from Dublin Airport to Washington, D.C. Dulles Intl Airport?

  • How old do you have to be to fly from Dublin Airport to Washington, D.C. Dulles Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Dublin Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport 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 license 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.

  • What is the most popular plane model from Dublin to Washington, D.C. Dulles Intl Airport?

  • What is the most popular airline from Dublin to Washington, D.C. Dulles Intl Airport?

Best airlines flying from Dublin to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Dublin to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $425Free CancellationRating
7.0
544 reviews
Search Icelandair flights
Aer LingusPriceFrom $460Free CancellationRating
7.2
1,270 reviews
Search Aer Lingus flights
United AirlinesPriceFrom $612Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights

  • United Airlines Flights From Dublin to Washington, D.C. Dulles Intl Airport

    Across 14 United Airlines flights from Dublin to Washington, D.C. Dulles Intl Airport this week, the average price was $802, with the best United Airlines deals starting from $612 round-trip. 8,929 users have rated United Airlines on momondo, with an average score of 7.4/10.

  • Aer Lingus Flights From Dublin to Washington, D.C. Dulles Intl Airport

    Aer Lingus (7.2/10 from 1,270 reviews) operates around 9 flights from Dublin to Washington, D.C. Dulles Intl Airport in any given week. The average Aer Lingus airfare for this route is around $649, with deals from around $460 rare but found on momondo. Referenced prices are for round-trip Dublin to Washington, D.C. Dulles Intl Airport flight searches in the last 72 hours.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Gettysburg
National Harbor
Arlington
Winchester
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Harpers Ferry
Towson
Rockville
Manassas
Reston
Fairfax
Glen Burnie
Gaithersburg

Why use momondo?

Why should I use momondo to find a flight deal from Dublin to Washington, D.C.?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Dublin to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Dublin to Washington, D.C. with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Washington, D.C. from Dublin with this policy.

How can momondo help me find flights from Dublin to Washington, D.C.?

Once you have performed a search for Dublin to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Dublin to Washington, D.C. right now. Can momondo alert me if prices change?

Price alerts on flights to Washington, D.C. from Dublin are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Washington, D.C. Dulles Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 10/15
Wed 10/22
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Washington, D.C.