When did momondo last update prices for flights from Cardiff Wales Airport to District of Columbia?

Prices for flights from Cardiff Wales Airport to District of Columbia are refreshed on a daily basis.

How old do you have to be to fly from Cardiff Wales Airport to District of Columbia?

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 Cardiff Wales Airport to District of Columbia.

What documentation or ID do you need to fly to District of Columbia?

The required travel and health documents for your District of Columbia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at District of Columbia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£666 Cheap Flights from Cardiff to District of Columbia in 2026

Find the cheapest flights from Cardiff to District of Columbia

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

07:30 - 20:24CWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

17h 54m2 stops Dublin Toronto Pearson Intl

20:30 - 22:50IAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

21h 20m2 stops Reykjavik Keflavik Intl Dublin

£654Multiple Airlines

Sat, 5 Sep - Mon, 21 Sep

07:30 - 20:24CWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

17h 54m2 stops Dublin Toronto Pearson Intl

20:30 - 22:50IAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

21h 20m3 stops Reykjavik Keflavik Intl London Gatwick Dublin

£659Multiple Airlines

Sat, 5 Sep - Mon, 21 Sep

09:45 - 15:35CWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

10h 50m1 stop Amsterdam Schiphol

18:10 - 16:45IAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

17h 35m1 stop Amsterdam Schiphol

£666KLM

Sat, 5 Sep - Mon, 21 Sep

09:45 - 15:35CWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

10h 50m1 stop Amsterdam Schiphol

18:26 - 16:45IAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

17h 19m2 stops New York John F Kennedy Intl Amsterdam Schiphol

£666KLM

Sat, 5 Sep - Mon, 21 Sep

17:35 - 15:35CWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

27h 00m1 stop Amsterdam Schiphol

17:30 - 09:15IAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

10h 45m1 stop Amsterdam Schiphol

£672KLM

Sat, 12 Sep - Sat, 19 Sep

07:30 - 20:24CWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

17h 54m2 stops Dublin Toronto Pearson Intl

20:30 - 22:50IAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

21h 20m2 stops Reykjavik Keflavik Intl Dublin

£677Multiple Airlines

Sat, 5 Sep - Mon, 21 Sep

07:30 - 20:24CWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

17h 54m2 stops Dublin Toronto Pearson Intl

20:30 - 22:50IAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

21h 20m3 stops Reykjavik Keflavik Intl London Gatwick Dublin

£683Multiple Airlines

Sat, 5 Sep - Mon, 21 Sep

09:45 - 15:35CWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

10h 50m1 stop Amsterdam Schiphol

12:25 - 09:15IAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

15h 50m2 stops New York John F Kennedy Intl Amsterdam Schiphol

£689Delta

Sat, 5 Sep - Mon, 21 Sep

09:45 - 15:35CWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

10h 50m1 stop Amsterdam Schiphol

18:26 - 16:45IAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

17h 19m2 stops New York John F Kennedy Intl Amsterdam Schiphol

£689Air France

Sat, 12 Sep - Sat, 19 Sep

09:45 - 22:59CWL Cardiff Wales-DCA Washington, D.C. Reagan-National

18h 14m2 stops Amsterdam Schiphol New York John F Kennedy Intl

11:40 - 09:15DCA Washington, D.C. Reagan-National-CWL Cardiff Wales

16h 35m2 stops Boston Logan Intl Amsterdam Schiphol

£692Delta

Sat, 5 Sep - Mon, 21 Sep

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KLM flights from Cardiff to District of Columbia

Our best KLM deals on Cardiff to District of Columbia flight tickets

KLM

5 Sept

CWL09:45Cardiff Wales

10h 50m

1 stop

IAD15:35Washington, D.C. Dulles Intl

21 Sept

IAD18:10Washington, D.C. Dulles Intl

17h 35m

1 stop

CWL16:45Cardiff Wales

£666

KLM

12 Sept

CWL17:35Cardiff Wales

27h 00m

1 stop

IAD15:35Washington, D.C. Dulles Intl

19 Sept

IAD17:30Washington, D.C. Dulles Intl

10h 45m

1 stop

CWL09:15Cardiff Wales

£672

Delta flights from Cardiff to District of Columbia

Our best Delta deals on Cardiff to District of Columbia flight tickets

Delta

5 Sept

CWL09:45Cardiff Wales

10h 50m

1 stop

IAD15:35Washington, D.C. Dulles Intl

21 Sept

IAD12:25Washington, D.C. Dulles Intl

15h 50m

2 stops

CWL09:15Cardiff Wales

£689

Delta

5 Sept

CWL09:45Cardiff Wales

18h 14m

2 stops

DCA22:59Washington, D.C. Reagan-National

21 Sept

DCA11:40Washington, D.C. Reagan-National

16h 35m

2 stops

CWL09:15Cardiff Wales

£692

Delta

12 Sept

CWL09:45Cardiff Wales

18h 29m

2 stops

IAD23:14Washington, D.C. Dulles Intl

19 Sept

IAD18:26Washington, D.C. Dulles Intl

17h 19m

2 stops

CWL16:45Cardiff Wales

£779

momondo Fare Finder

Use the filters below to find and compare flights from Cardiff to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Sat 5/9

07:30-20:24

2 stops17h 54m

Washington, D.C. Dulles Intl

Mon 21/9

20:30-22:50

2 stops21h 20m

£654

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Sat 5/9

07:30-20:24

2 stops17h 54m

Washington, D.C. Dulles Intl

Mon 21/9

20:30-22:50

3 stops21h 20m

£659

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Sat 5/9

09:45-15:35

1 stop10h 50m

Washington, D.C. Dulles Intl

Mon 21/9

18:10-16:45

1 stop17h 35m

£666

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Sat 5/9

09:45-15:35

1 stop10h 50m

Washington, D.C. Dulles Intl

Mon 21/9

18:26-16:45

2 stops17h 19m

£666

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Sat 12/9

17:35-15:35

1 stop27h 00m

Washington, D.C. Dulles Intl

Sat 19/9

17:30-09:15

1 stop10h 45m

£672

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Sat 5/9

07:30-20:24

2 stops17h 54m

Washington, D.C. Dulles Intl

Mon 21/9

20:30-22:50

2 stops21h 20m

£677

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Sat 5/9

07:30-20:24

2 stops17h 54m

Washington, D.C. Dulles Intl

Mon 21/9

20:30-22:50

3 stops21h 20m

£683

Fastest return journey

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Sat 5/9

09:45-15:35

1 stop10h 50m

Washington, D.C. Dulles Intl

Mon 21/9

12:25-09:15

2 stops15h 50m

£689

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Sat 12/9

09:45-15:35

1 stop10h 50m

Washington, D.C. Dulles Intl

Sat 19/9

18:26-16:45

2 stops17h 19m

£689

CardiffWashington, D.C.

CWL Cardiff Wales - DCA Washington, D.C. Reagan-National

CWLDCA

Cardiff Wales

Sat 5/9

09:45-22:59

2 stops18h 14m

Washington, D.C. Reagan-National

Mon 21/9

11:40-09:15

2 stops16h 35m

£692

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Cardiff to District of Columbia

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 airline that flies from Cardiff Wales to District of Columbia?

Delta is the most popular carrier operating from Cardiff Wales to District of Columbia

Cheap Cardiff to District of Columbia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Cardiff to District of Columbia

Fastest flight time	13h 22m
Direct flights	None

The fastest flight from Cardiff to District of Columbia takes 13h 22m

There are no direct flights from Cardiff to District of Columbia. There are no popular flight routes from Cardiff to District of Columbia.

Search flight deals

Frequently asked questions about flying from Cardiff to District of Columbia

When did momondo last update prices for flights from Cardiff Wales Airport to District of Columbia?
Prices for flights from Cardiff Wales Airport to District of Columbia are refreshed on a daily basis.
How old do you have to be to fly from Cardiff Wales Airport to District of Columbia?
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 Cardiff Wales Airport to District of Columbia.
What documentation or ID do you need to fly to District of Columbia?
The required travel and health documents for your District of Columbia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at District of Columbia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Cardiff to District of Columbia?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Cardiff to District of Columbia. momondo saves you time and could save you money on your trip.

Can I find flights from Cardiff to District of Columbia with flexible booking policies on momondo?

momondo does allow users to show only those flights to District of Columbia from Cardiff which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Cardiff to District of Columbia?

momondo provides multiple filters to help you find the best flight to District of Columbia from Cardiff. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Cardiff to District of Columbia right now. Can momondo alert me if prices change?

Price alerts on flights to District of Columbia from Cardiff 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.