Latest deals
When to book
FAQs
Price Alerts

Cheap flights from Washington, D.C. Dulles Intl Airport to Knock from €622

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Knock departing on 2/11. 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
Voted the Winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise 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 Washington, D.C. Dulles Intl Airport to Knock

Cheap return flights

Multiple Airlines Logo
18:20 - 12:25IAD-NOC
13h 05m1 stop
Multiple Airlines Logo
13:00 - 19:55NOC-IAD
11h 55m1 stop
€622Multiple Airlines
Find Deal
Sun, 2 Nov - Sun, 9 Nov
Multiple Airlines Logo
13:20 - 12:25IAD-NOC
19h 05m2 stops
Multiple Airlines Logo
13:00 - 20:59NOC-IAD
35h 59m2 stops
€631Multiple Airlines
Find Deal
Tue, 17 Mar - Sun, 22 Mar
British Airways Logo
19:20 - 12:25IAD-NOC
13h 05m1 stop
British Airways Logo
13:00 - 16:35NOC-IAD
31h 35m2 stops
€632British Airways
Find Deal
Tue, 17 Mar - Sun, 22 Mar
Multiple Airlines Logo
19:20 - 12:25IAD-NOC
13h 05m1 stop
Multiple Airlines Logo
13:00 - 16:35NOC-IAD
31h 35m1 stop
€638Multiple Airlines
Find Deal
Tue, 17 Mar - Sun, 22 Mar
British Airways Logo
18:20 - 12:25IAD-NOC
13h 05m1 stop
British Airways Logo
13:00 - 15:35NOC-IAD
31h 35m2 stops
€639British Airways
Find Deal
Sun, 2 Nov - Sun, 9 Nov
Multiple Airlines Logo
18:00 - 15:55IAD-NOC
16h 55m2 stops
Multiple Airlines Logo
09:15 - 15:15NOC-IAD
35h 00m3 stops
€712Multiple Airlines
Find Deal
Sun, 2 Nov - Sun, 9 Nov
Multiple Airlines Logo
09:00 - 16:55IAD-NOC
26h 55m3 stops
Multiple Airlines Logo
09:15 - 15:15NOC-IAD
35h 00m3 stops
€720Multiple Airlines
Find Deal
Sun, 2 Nov - Sun, 9 Nov
Multiple Airlines Logo
09:00 - 16:55IAD-NOC
26h 55m3 stops
Multiple Airlines Logo
13:00 - 15:35NOC-IAD
31h 35m1 stop
€887Multiple Airlines
Find Deal
Sun, 2 Nov - Sun, 9 Nov
Aer Lingus Logo
17:50 - 12:35IAD-NOC
13h 45m1 stop
Aer Lingus Logo
13:05 - 20:20NOC-IAD
12h 15m1 stop
€1,013Aer Lingus
Find Deal
Mon, 6 Oct - Sat, 11 Oct
British Airways Logo
20:25 - 12:35IAD-NOC
35h 10m2 stops
British Airways Logo
13:05 - 20:20NOC-IAD
12h 15m1 stop
€1,035British Airways
Find Deal
Mon, 6 Oct - Sat, 11 Oct

British Airways flights from Washington, D.C. Dulles Intl Airport to Knock

Our best British Airways deals on Washington, D.C. Dulles Intl Airport to Knock flight tickets
British Airways
17 Mar
IAD19:20Washington, D.C. Dulles Intl
13h 05m
1 stop
NOC12:25Knock Intl
22 Mar
NOC13:00Knock Intl
31h 35m
2 stops
IAD16:35Washington, D.C. Dulles Intl
€632
Find similar
British Airways
2 Nov
IAD18:20Washington, D.C. Dulles Intl
13h 05m
1 stop
NOC12:25Knock Intl
9 Nov
NOC13:00Knock Intl
31h 35m
2 stops
IAD15:35Washington, D.C. Dulles Intl
€639
Find similar
British Airways
6 Oct
IAD20:25Washington, D.C. Dulles Intl
35h 10m
2 stops
NOC12:35Knock Intl
11 Oct
NOC13:05Knock Intl
12h 15m
1 stop
IAD20:20Washington, D.C. Dulles Intl
€1,035
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Washington, D.C. Dulles Intl Airport to Knock 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 13,528 searches. Data last updated 18 September 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Knock that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Knock

IAD - NOC

IADNOC

Washington, D.C. Dulles Intl

Sun 2/11

18:20-12:25

1 stop13h 05m

Knock Intl

Sun 9/11

13:00-19:55

1 stop11h 55m

€622

Washington, D.C.Knock

IAD - NOC

IADNOC

Washington, D.C. Dulles Intl

Tue 17/3

13:20-12:25

2 stops19h 05m

Knock Intl

Sun 22/3

13:00-20:59

2 stops35h 59m

€631

Washington, D.C.Knock

IAD - NOC

IADNOC

Washington, D.C. Dulles Intl

Tue 17/3

19:20-12:25

1 stop13h 05m

Knock Intl

Sun 22/3

13:00-16:35

2 stops31h 35m

€632

Washington, D.C.Knock

IAD - NOC

IADNOC

Washington, D.C. Dulles Intl

Tue 17/3

19:20-12:25

1 stop13h 05m

Knock Intl

Sun 22/3

13:00-16:35

1 stop31h 35m

€638

Washington, D.C.Knock

IAD - NOC

IADNOC

Washington, D.C. Dulles Intl

Sun 2/11

18:20-12:25

1 stop13h 05m

Knock Intl

Sun 9/11

13:00-15:35

2 stops31h 35m

€639

Washington, D.C.Knock

IAD - NOC

IADNOC

Washington, D.C. Dulles Intl

Sun 2/11

18:00-15:55

2 stops16h 55m

Knock Intl

Sun 9/11

09:15-15:15

3 stops35h 00m

€712

Washington, D.C.Knock

IAD - NOC

IADNOC

Washington, D.C. Dulles Intl

Sun 2/11

09:00-16:55

3 stops26h 55m

Knock Intl

Sun 9/11

09:15-15:15

3 stops35h 00m

€720

Washington, D.C.Knock

IAD - NOC

IADNOC

Washington, D.C. Dulles Intl

Sun 2/11

09:00-16:55

3 stops26h 55m

Knock Intl

Sun 9/11

13:00-15:35

1 stop31h 35m

€887

Washington, D.C.Knock

IAD - NOC

IADNOC

Washington, D.C. Dulles Intl

Mon 6/10

17:50-12:35

1 stop13h 45m

Knock Intl

Sat 11/10

13:05-20:20

1 stop12h 15m

€1,013

Washington, D.C.Knock

IAD - NOC

IADNOC

Washington, D.C. Dulles Intl

Mon 6/10

20:25-12:35

2 stops35h 10m

Knock Intl

Sat 11/10

13:05-20:20

1 stop12h 15m

€1,035

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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

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

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

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

Direct flights

None
There are no direct flights from Washington, D.C. Dulles Intl Airport to Knock. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Knock.
Search flight deals

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

    Washington, D.C. Dulles Intl and Knock Intl are 5279.8 km apart from one another. In terms of flight time, this usually takes a little over 13h 05m.

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

    Prices for flights from Washington, D.C. Dulles Intl Airport to Knock Intl Airport were last updated today.

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Knock 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 stopovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Knock Intl Airport.

  • What documentation or ID do you need to fly to Knock Intl Airport?

    The travel and health documents required for your trip to Knock Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Knock Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • How do I get Price Alerts for flights from Washington, D.C. Dulles Intl Airport to Knock?

    Search flight deals from Washington, D.C. Dulles Intl Airport to Knock. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Washington, D.C. Dulles Intl Airport to Knock with momondo?

    By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Travelling to a place near Knock?

Book flights to Knock if you plan to visit one of these locations
Sligo
Westport
Carrick-on-Shannon
Belmullet
Newport

Why use momondo?

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

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

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

All flight searches from Washington, D.C. to Knock on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Knock.

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

Yes. momondo can track prices for Washington, D.C. to Knock flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Knock trip

We make it super easy to schedule, organise 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
Sat 18/10
Sat 25/10
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Ireland