How do I get Price Alerts for flights from Belfast to Washington, D.C.?

Confirm your travel details to search for the latest offers for flights from Belfast to Washington, D.C. . While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

How can I save money on flights from Belfast to Washington, D.C. with momondo?

Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore” . Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

How does momondo find its flight prices?

We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

When did momondo last update prices for flights from Belfast to Washington, D.C.?

Prices for flights from Belfast to Washington, D.C. refresh daily.

How old do you have to be to fly from Belfast to Washington, D.C.?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast to Washington, D.C..

What documentation or ID do you need to fly to Washington, D.C.?

The required travel and health documents for your Washington, D.C. 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 Washington, D.C.. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£362 Cheap Flights from Belfast to Washington, D.C. in 2026

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

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

06:10 - 19:20

BFS

IAD

18h 10m

2 stops

20:30 - 20:35

IAD

BFS

19h 05m

2 stops

£563Multiple Airlines

Thu, 10 Sep - Thu, 17 Sep

06:10 - 19:20

BFS

IAD

18h 10m

2 stops

20:30 - 20:35

IAD

BFS

19h 05m

2 stops

£576Multiple Airlines

Thu, 10 Sep - Thu, 17 Sep

21:40 - 14:15

BFS

IAD

45h 35m

3 stops

20:30 - 21:30

IAD

BFS

20h 00m

2 stops

£599Multiple Airlines

Sun, 13 Sep - Sun, 20 Sep

06:10 - 22:15

BFS

BWI

21h 05m

2 stops

23:20 - 20:35

BWI

BFS

16h 15m

2 stops

£604Multiple Airlines

Thu, 10 Sep - Thu, 17 Sep

06:55 - 14:25

BFS

IAD

36h 30m

3 stops

20:30 - 23:05

IAD

BFS

21h 35m

2 stops

£608Multiple Airlines

Thu, 10 Sep - Thu, 17 Sep

06:10 - 19:25

BFS

BWI

18h 15m

2 stops

23:20 - 20:35

BWI

BFS

16h 15m

2 stops

£612Multiple Airlines

Thu, 10 Sep - Thu, 17 Sep

21:40 - 20:35

BFS

IAD

27h 55m

3 stops

20:30 - 19:20

IAD

BFS

17h 50m

2 stops

£612Multiple Airlines

Thu, 10 Sep - Thu, 17 Sep

08:20 - 21:50

BFS

DCA

18h 30m

3 stops

06:59 - 18:55

DCA

BFS

30h 56m

3 stops

£614Multiple Airlines

Thu, 10 Sep - Thu, 17 Sep

20:15 - 14:15

BFS

IAD

47h 00m

3 stops

23:20 - 21:50

IAD

BFS

17h 30m

2 stops

£616Multiple Airlines

Fri, 11 Sep - Fri, 18 Sep

08:20 - 18:15

BFS

DCA

14h 55m

2 stops

06:59 - 18:55

DCA

BFS

30h 56m

3 stops

£630Multiple Airlines

Thu, 10 Sep - Thu, 17 Sep

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

British Airways flights from Belfast to Washington, D.C.

Our best British Airways deals on Belfast to Washington, D.C. flight tickets

British Airways

26 Aug

BHD06:30Belfast City

18h 50m

1 stop

IAD20:20Washington, D.C. Dulles Intl

2 Sept

IAD22:25Washington, D.C. Dulles Intl

12h 15m

1 stop

BHD15:40Belfast City

£662

British Airways

4 Sept

BHD20:10Belfast City

24h 20m

2 stops

IAD15:30Washington, D.C. Dulles Intl

8 Sept

IAD13:23Washington, D.C. Dulles Intl

16h 22m

2 stops

BHD10:45Belfast City

£678

British Airways

4 Sept

BHD20:10Belfast City

24h 20m

2 stops

IAD15:30Washington, D.C. Dulles Intl

8 Sept

IAD17:45Washington, D.C. Dulles Intl

10h 15m

1 stop

BHD09:00Belfast City

£679

American Airlines flights from Belfast to Washington, D.C.

Our best American Airlines deals on Belfast to Washington, D.C. flight tickets

American Airlines

26 Aug

BHD11:35Belfast City

16h 20m

2 stops

IAD22:55Washington, D.C. Dulles Intl

2 Sept

IAD21:30Washington, D.C. Dulles Intl

17h 20m

1 stop

BHD19:50Belfast City

£704

American Airlines

26 Aug

BHD11:35Belfast City

16h 20m

2 stops

IAD22:55Washington, D.C. Dulles Intl

2 Sept

IAD21:30Washington, D.C. Dulles Intl

17h 20m

1 stop

BHD19:50Belfast City

£705

American Airlines

26 Aug

BHD11:35Belfast City

16h 20m

2 stops

IAD22:55Washington, D.C. Dulles Intl

2 Sept

IAD21:30Washington, D.C. Dulles Intl

17h 20m

1 stop

BHD19:50Belfast City

£714

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 10/9

06:10-19:20

2 stops18h 10m

Washington, D.C. Dulles Intl

Thu 17/9

20:30-20:35

2 stops19h 05m

£563

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 10/9

06:10-19:20

2 stops18h 10m

Washington, D.C. Dulles Intl

Thu 17/9

20:30-20:35

2 stops19h 05m

£576

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Sun 13/9

21:40-14:15

3 stops45h 35m

Washington, D.C. Dulles Intl

Sun 20/9

20:30-21:30

2 stops20h 00m

£599

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Thu 10/9

06:10-22:15

2 stops21h 05m

Baltimore/Washington

Thu 17/9

23:20-20:35

2 stops16h 15m

£604

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 10/9

06:55-14:25

3 stops36h 30m

Washington, D.C. Dulles Intl

Thu 17/9

20:30-23:05

2 stops21h 35m

£608

Fastest return journey

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Thu 10/9

06:10-19:25

2 stops18h 15m

Baltimore/Washington

Thu 17/9

23:20-20:35

2 stops16h 15m

£612

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 10/9

21:40-20:35

3 stops27h 55m

Washington, D.C. Dulles Intl

Thu 17/9

20:30-19:20

2 stops17h 50m

£612

BelfastWashington, D.C.

BFS - DCA

BFSDCA

Belfast Intl

Thu 10/9

08:20-21:50

3 stops18h 30m

Washington, D.C. Reagan-National

Thu 17/9

06:59-18:55

3 stops30h 56m

£614

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Fri 11/9

20:15-14:15

3 stops47h 00m

Washington, D.C. Dulles Intl

Fri 18/9

23:20-21:50

2 stops17h 30m

£616

BelfastWashington, D.C.

BFS - DCA

BFSDCA

Belfast Intl

Thu 10/9

08:20-18:15

2 stops14h 55m

Washington, D.C. Reagan-National

Thu 17/9

06:59-18:55

3 stops30h 56m

£630

Flights are sorted by cheapest return flights first.

Showing 1-10 of 12 resultsSorted by cheapest first

Cheap Belfast to Washington, D.C. flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Belfast to Washington, D.C.

Fastest flight time	14h 25m
Direct flights	None

The fastest flight from Belfast to Washington, D.C. takes 14h 25m

There are no direct flights from Belfast to Washington, D.C.. There are no popular flight routes from Belfast to Washington, D.C..

Search flight deals

Frequently asked questions about flying from Belfast to Washington, D.C.

How far is Belfast to Washington, D.C. by plane?
Belfast and Washington, D.C. are 3373.5 mi apart from one another. By plane, this route typically takes 14h 25m.
When did momondo last update prices for flights from Belfast to Washington, D.C.?
Prices for flights from Belfast to Washington, D.C. refresh daily.
How old do you have to be to fly from Belfast to Washington, D.C.?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The required travel and health documents for your Washington, D.C. 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 Washington, D.C.. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Frequently asked questions about flying from Belfast to Washington, D.C.

How do I get Price Alerts for flights from Belfast to Washington, D.C.?
Confirm your travel details to search for the latest offers for flights from Belfast to Washington, D.C.. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.
How can I save money on flights from Belfast to Washington, D.C. with momondo?
Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.
How does momondo find its flight prices?
We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Alexandria

College Park

Springfield

Fairfax

Arlington

Gettysburg

Linthicum Heights

National Harbor

Ellicott City

Cambridge

Glen Burnie

Westminster

Laurel

Lutherville Timonium

Owings Mills

Lexington Park

Woodbridge

Bethesda

Silver Spring

Rockville

Why use momondo?

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

Finding the right flight to Washington, D.C. from Belfast is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

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

Flights from Belfast to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from Belfast.

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

If you are simply researching potential flights to Washington, D.C., momondo offers a useful price alert feature which will track prices for flights to Washington, D.C. from Belfast and alert you when they change.

An easier way to manage your Washington, D.C. 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 29/8

Sat 5/9

Email me momondo's favourite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Nearby airports

Cabin classes

Other United States destinations

Complete your trip

Feeling lucky

Fly into one of these airports located in Washington, D.C.

Washington, D.C. Reagan-National Airport

Washington, D.C. Dulles Intl Airport

Cheap flights from Belfast to Washington, D.C. from £362

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Belfast to Washington, D.C. departing on 17/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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

Cheap return flights

Cheap one-way flights

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

British Airways flights from Belfast to Washington, D.C.

Our best British Airways deals on Belfast to Washington, D.C. flight tickets

American Airlines flights from Belfast to Washington, D.C.

Our best American Airlines deals on Belfast to Washington, D.C. flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Belfast to Washington, D.C. that are best for you.

Cheap Belfast to Washington, D.C. flight deals and tips

Fastest flight time

Direct flights

Frequently asked questions about flying from Belfast to Washington, D.C.

Frequently asked questions about flying from Belfast to Washington, D.C.

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

Why use momondo?

An easier way to manage your Washington, D.C. 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.

Cabin classes currently available on flights to Washington, D.C.

List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

Popular Cities in the United States

Popular flights according to clicks in the last 7 days on momondo

Complete your trip to Washington, D.C.

Explore popular destinations other users love

According to popular flight searches on momondo this year