A modern glass dome structure with a geometric pattern and a central cylindrical tower.

$371 Cheap Flights from Washington (IAD) to Belfast (BHD)

View $371 flight on Wed, Nov 4, 2026Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Belfast (BHD-George Best Belfast City)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Washington to Belfast (IAD-BHD)

Prices were available within the past 7 days and start at $371 for one-way flights and $941 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Wed, Nov 11 - Sun, Nov 15
IAD
Washington
BHD
Belfast
$941 Roundtrip, found 6 days ago
$941
Roundtrip
found 6 days ago
Select British Airways flight, departing Wed, Nov 11 from Washington to Belfast, returning Sun, Nov 15, priced at $941 found 6 days ago
American Airlines
Tue, Nov 10 - Sat, Nov 14
IAD
Washington
BHD
Belfast
$944 Roundtrip, found 5 days ago
$944
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Nov 10 from Washington to Belfast, returning Sat, Nov 14, priced at $944 found 5 days ago
British Airways
Tue, Nov 10 - Sat, Nov 14
IAD
Washington
BHD
Belfast
$945 Roundtrip, found 5 days ago
$945
Roundtrip
found 5 days ago
Select British Airways flight, departing Tue, Nov 10 from Washington to Belfast, returning Sat, Nov 14, priced at $945 found 5 days ago
American Airlines
Tue, Nov 10 - Sat, Nov 14
IAD
Washington
BHD
Belfast
$949 Roundtrip, found 5 days ago
$949
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Nov 10 from Washington to Belfast, returning Sat, Nov 14, priced at $949 found 5 days ago
American Airlines
Wed, Nov 4 - Tue, Nov 10
IAD
Washington
BHD
Belfast
$951 Roundtrip, found 4 hours ago
$951
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Wed, Nov 4 from Washington to Belfast, returning Tue, Nov 10, priced at $951 found 4 hours ago
British Airways
Mon, Nov 23 - Fri, Nov 27
IAD
Washington
BHD
Belfast
$952 Roundtrip, found 1 day ago
$952
Roundtrip
found 1 day ago
Select British Airways flight, departing Mon, Nov 23 from Washington to Belfast, returning Fri, Nov 27, priced at $952 found 1 day ago
British Airways
Mon, Nov 9 - Sun, Nov 15
IAD
Washington
BHD
Belfast
$954 Roundtrip, found 16 hours ago
$954
Roundtrip
found 16 hours ago
Select British Airways flight, departing Mon, Nov 9 from Washington to Belfast, returning Sun, Nov 15, priced at $954 found 16 hours ago
Delta
Wed, Nov 4 - Tue, Nov 10
IAD
Washington
BHD
Belfast
$971 Roundtrip, found 4 hours ago
$971
Roundtrip
found 4 hours ago
Select Delta flight, departing Wed, Nov 4 from Washington to Belfast, returning Tue, Nov 10, priced at $971 found 4 hours ago
Virgin Atlantic
Wed, Nov 4 - Tue, Nov 10
IAD
Washington
BHD
Belfast
$996 Roundtrip, found 4 hours ago
$996
Roundtrip
found 4 hours ago
Select Virgin Atlantic flight, departing Wed, Nov 4 from Washington to Belfast, returning Tue, Nov 10, priced at $996 found 4 hours ago
KLM
Wed, Nov 4 - Tue, Nov 10
IAD
Washington
BHD
Belfast
$1,084 Roundtrip, found 4 hours ago
$1,084
Roundtrip
found 4 hours ago
Select KLM flight, departing Wed, Nov 4 from Washington to Belfast, returning Tue, Nov 10, priced at $1,084 found 4 hours ago

Alternative airports near Belfast

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

Select flight to George Best Belfast City BHD. Cheapest and Closest option available. Average driving time to city center is 6 minutes. Flights from $1,389
BHD
George Best Belfast City
CheapestClosest
Average driving time to city center6 min
Flights from $1,389

What you need to know for your flight from Washington Dulles Intl. to George Best Belfast City

Washington (IAD) to Belfast (BHD) at a glance

Travel on a range of airlines offering flights from Washington Dulles International Airport (IAD) to George Best Belfast City Airport (BHD) on this international long-haul journey. Compare choices from full-service carriers to find the itinerary that aligns with your budget, schedule, and travel plans as you discover Belfast's iconic attractions and neighborhoods. Here, you’ll find essential details for your flights from Washington to Belfast.

  • Fastest flight duration: around 8h 45m in-flight, plus roughly 2h 30m layover with one stop
  • Route distance: roughly 3,400 miles (5,470 km)
  • Flights per week: around 8 departures on average
  • Typical fares (one-way): economy tickets often range from $265–$870, depending on seasonality and how far ahead you book

Flights from Washington Dulles International Airport (IAD) to George Best Belfast City Airport (BHD)

Recent traveler bookings reveal the top airlines favored for flights from Washington to Belfast, typically featuring one-stop services with popular layovers at Heathrow Airport (LHR), which offers about a 2h 30m connection time. This allows you to mix and match options based on price, total travel time, and cabin class to create the ideal itinerary.

  • British Airways: As a leading full-service airline providing one-stop flights, their one-way fares generally range from $290 to $700. This carrier represents about 57% of departures on this route, offering an in-flight duration of 8 hours and 45 minutes, with the total travel time, including layovers, around 11 hours and 15 minutes.
  • American Airlines: Another prominent full-service airline, American Airlines offers one-stop service with one-way fares typically falling between $265 and $950. This airline accounts for around 43% of departures for this route, featuring a flight time of 8 hours and 45 minutes, while the overall journey, including layover, takes approximately 11 hours and 15 minutes.

Alternative routes from Washington (IAD) to Belfast (BHD)

  • Washington to Belfast (IAD-BFS): Located approximately 14 miles from George Best Belfast City Airport (BHD), Belfast International Airport (BFS) serves as a key entry point for travelers heading to Northern Ireland.
  • Washington to Belfast (DCA-BHD): Ronald Reagan Washington National Airport (DCA) is about 23 miles distant from Washington Dulles International Airport (IAD), providing a convenient option for flights to Belfast.
  • Washington to Belfast (DCA-BFS): Ronald Reagan Washington National Airport (DCA) is roughly 23 miles from Washington Dulles International Airport (IAD), while Belfast International Airport (BFS) lies around 14 miles from George Best Belfast City Airport (BHD).

How to find the best prices for flights from Washington (IAD) to Belfast (BHD)

Getting some of the best deals on flights from Washington to Belfast is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking 2-8 weeks in advance, coinciding with when most travelers make their reservations. Evening departures between 6 PM and midnight not only offer lower prices but are also the most popular flight times. Additionally, flying on Tuesday provides both affordable rates and is the favored travel day for many.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at George Best Belfast City Airport from Washington Dulles International Airport

Belfast welcomes travelers from Washington with a range of transport options based on price, convenience, and proximity. For departures, Washington Dulles International Airport is roughly a 40-minute drive (covering about 29 miles) from central Washington. Here's how to reach Belfast efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Belfast, with private rides that can be arranged in advance.
  • Car rental: Renting a car from George Best Belfast City Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at George Best Belfast City Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From George Best Belfast City Airport, Seaport, a seaport, is located about 0.1 miles away on foot, while Sydenham Station, a train station, is approximately 0.5 miles away on foot, making both transport options easily accessible for travelers.

Frequently asked questions

How much does a flight from Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City) cost?
You can find cheap one-way flights from $371 and cheap return flights from $941 Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City) with Expedia. Roundtrip flights usually range from $681 to $3180. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City)?
The cheapest month to fly from IAD to BHD is November when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City)?
Enter IAD to BHD and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City)?
KLM is one of the cheapest airlines offering connecting flights from Washington Dulles Intl. (IAD) to George Best Belfast City (BHD), with round-trip tickets starting from around $754 with a layover in Hartsfield-Jackson Atlanta Intl. (ATL). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City)?
To find a cheap flight from Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City)?
The earliest flight from Washington, DC (IAD) to Belfast (BHD) typically departs at around 6:00 AM, operated by United and Aer Lingus. This seasonal service is available in February, allowing you to make the most of your time in Belfast. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City)?
a Wednesday typically has the most flights from Washington Dulles Intl. (IAD) to George Best Belfast City (BHD), with approximately 42 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include United, Delta, and British Airways.
What are the most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City)?
When flying from Washington Dulles International Airport (IAD) to George Best Belfast City Airport (BHD), the most popular departure times are in the late afternoon, from 3pm to 6pm. This accounts for around 31% of total traffic. Many major carriers, including Aer Lingus, British Airways, and Lufthansa, offer flights during this window. This timing works well because it allows you to have a leisurely morning before heading to the airport.
How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City)?
Flying from IAD to BHD with a connection usually takes about 17 hours 30 minutes, traveling roughly 3,392 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City)?
You can fly business class between IAD and BHD. Airlines that offer business class service on this route include:

  • British Airways
  • KLM
  • Air France

How do I earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City) flight with Expedia?
It's easy to earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Belfast from Washington Dulles Intl. (IAD)?
From Washington Dulles Intl. (IAD), you can fly into George Best Belfast City (BHD) and Belfast Intl. (BFS) in Belfast. Some flights may connect through major hubs like Charlotte-Douglas Intl. (CLT), DUB (DUB), Hartsfield-Jackson Atlanta Intl. (ATL) before reaching Belfast. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City) at the last minute?
Typically, booking a last minute flight from Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City) flight and hotel package?
Securing a Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City) Belfast Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City)?
If you booked your Washington, DC (IAD-Washington Dulles Intl.) to Belfast (BHD-George Best Belfast City) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
George Best Belfast City
Airlines serving
Aer Lingus, American Airlines, British Airways, Delta, KLM, Virgin Atlantic
Roundtrip price
$940
Distance
3391 mi

Book with confidence

Washington to Belfast Flights

The cheapest times to fly from Washington to Belfast

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 Belfast are during the month of November. You can find some of the cheapest flights from Washington to Belfast with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Belfast

Sunday is one of the best days to book for cheap flights from Washington to Belfast: 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 Belfast

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 Belfast in 2026. You can also book with separate airlines for your outbound and return journeys, from $371 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 Belfast 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 Belfast 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 Belfast Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

Explore a world of travel with Expedia