$489 Cheap Flights from Washington (IAD) to Knock (NOC)

View $489 flight on Mon, Nov 24, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Knock (NOC-Ireland West)

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Cheap Flights from Washington to Knock (IAD-NOC)

Prices were available within the past 7 days and start at $489 for one-way flights and $694 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Mon, Nov 24 - Wed, Dec 3
IAD
Washington
NOC
Knock
$694 Roundtrip, found 1 day ago
$694
Roundtrip
found 1 day ago
Select Air Canada flight, departing Mon, Nov 24 from Washington to Knock, returning Wed, Dec 3, priced at $694 found 1 day ago
Air Canada
Mon, Nov 24 - Wed, Dec 3
IAD
Washington
NOC
Knock
$701 Roundtrip, found 1 day ago
$701
Roundtrip
found 1 day ago
Select Air Canada flight, departing Mon, Nov 24 from Washington to Knock, returning Wed, Dec 3, priced at $701 found 1 day ago
Air Canada
Mon, Nov 24 - Wed, Dec 3
IAD
Washington
NOC
Knock
$707 Roundtrip, found 1 day ago
$707
Roundtrip
found 1 day ago
Select Air Canada flight, departing Mon, Nov 24 from Washington to Knock, returning Wed, Dec 3, priced at $707 found 1 day ago
Aer Lingus
Mon, Nov 24 - Wed, Dec 3
IAD
Washington
NOC
Knock
$725 Roundtrip, found 1 day ago
$725
Roundtrip
found 1 day ago
Select Aer Lingus flight, departing Mon, Nov 24 from Washington to Knock, returning Wed, Dec 3, priced at $725 found 1 day ago
United
Wed, Oct 22 - Fri, Oct 31
IAD
Washington
NOC
Knock
$744 Roundtrip, found 3 days ago
$744
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 22 from Washington to Knock, returning Fri, Oct 31, priced at $744 found 3 days ago
Air Canada
Mon, Nov 24 - Wed, Dec 3
IAD
Washington
NOC
Knock
$750 Roundtrip, found 1 day ago
$750
Roundtrip
found 1 day ago
Select Air Canada flight, departing Mon, Nov 24 from Washington to Knock, returning Wed, Dec 3, priced at $750 found 1 day ago
Iberia
Mon, Nov 24 - Wed, Dec 3
IAD
Washington
NOC
Knock
$751 Roundtrip, found 1 day ago
$751
Roundtrip
found 1 day ago
Select Iberia flight, departing Mon, Nov 24 from Washington to Knock, returning Wed, Dec 3, priced at $751 found 1 day ago
British Airways
Mon, Nov 24 - Wed, Dec 3
IAD
Washington
NOC
Knock
$754 Roundtrip, found 1 day ago
$754
Roundtrip
found 1 day ago
Select British Airways flight, departing Mon, Nov 24 from Washington to Knock, returning Wed, Dec 3, priced at $754 found 1 day ago
Air Canada
Mon, Nov 24 - Wed, Dec 3
IAD
Washington
NOC
Knock
$756 Roundtrip, found 1 day ago
$756
Roundtrip
found 1 day ago
Select Air Canada flight, departing Mon, Nov 24 from Washington to Knock, returning Wed, Dec 3, priced at $756 found 1 day ago
Aer Lingus
Mon, Jan 5 - Wed, Jan 14
IAD
Washington
NOC
Knock
$759 Roundtrip, found 6 days ago
$759
Roundtrip
found 6 days ago
Select Aer Lingus flight, departing Mon, Jan 5 from Washington to Knock, returning Wed, Jan 14, priced at $759 found 6 days ago

Alternative airports near Knock

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ireland West NOC. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $980
NOC
Ireland West
CheapestClosest
Average driving time to city center14 min
Flights from $980

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Ireland West Airport (NOC) cost?
Secure a cheap one-way flight from $489 or cheap return flight from $694 from Washington Dulles Intl. Airport (IAD) to Ireland West Airport (NOC) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Ireland West Airport (NOC)?
Planning your trip for November can help you save, as it's the cheapest month for flights between IAD and NOC. You'll typically find the lowest fares during the off-season.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Ireland West Airport (NOC)?
To find the cheapest airline flying from IAD to NOC, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Ireland West Airport (NOC)?
There aren't any daily direct flights departing from Washington Dulles Intl. Airport (IAD) to Ireland West Airport (NOC). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from IAD to NOC?
Usually you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, this can vary depending on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Ireland West Airport (NOC)?
To avoid possible delays on the Washington Dulles Intl. Airport (IAD) to Ireland West Airport (NOC) route, aim to fly before 3 PM. Flights after this time are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Ireland West Airport (NOC) last-minute?
Booking your plane ticket from IAD to NOC shortly before your journey is generally more expensive. But if you're flexible with your departure dates and times, you could grab a cheap last-minute fare.
Is it cheaper to book an IAD to NOC flight and hotel package?
Compared with arranging hotels and flights separately, booking an IAD to NOC flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place will take the stress out of planning your trip. Simply secure your flights and choose from our extensive range of stays, then personalize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Ireland West Airport (NOC)?
In most cases, you're able to cancel or reschedule your IAD to NOC flight. However, additional charges may apply, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you want further information, head to our Customer Service portal.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Ireland West
Airlines serving
Aer Lingus, British Airways
Roundtrip price
$694
Distance
3285 mi

Book with confidence

Washington to Knock Flights

The cheapest times to fly from Washington to Knock

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Knock are during the month of November. You can find some of the cheapest flights from Washington to Knock with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Knock

Sunday is one of the best days to book for cheap flights from Washington to Knock: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Knock

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Knock in 2025. You can also book with separate airlines for your outbound and return journeys, from $489 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Knock flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Knock airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Washington to Knock Flights

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*Available to One Key members.