$294 Find Cheap Flights from Washington Dulles Airport to Belfast - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$767
Typical prices: $878-$1,212
Multiple Airlines
Thu 10/25Wed 11/7
IAD - BFS • 3 stops
Cheapest one-way
$294
Typical prices: $420-$629
Multiple Airlines
Sat 9/29
IAD - BFS • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Washington, D.C. Dulles Intl Airport and Belfast. You'll need to take a connecting flight to reach the destination.
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Top routes
IAD - BFS
Cheapest • 13% average savings
IAD - BHD
Most popular
Insights
Insights
When to travel
April
Cheapest • 30% price drop
April
Most popular
Good to know
+1
Good to know
+1
Top layover airports
London Heathrow (LHR)
Cheapest • Avg $1,148 (round-trip)
Amsterdam Schiphol (AMS)
Shortest trip • 10h 31m (one-way)
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Insights
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Flight Deals

Cheap Flights from Dulles Intl to Belfast (IAD-BHD)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Belfast

Sun, Oct 25 - Sat, Nov 7
Multiple Airlines Logo
8:40 pm - 9:20 pmIAD  Washington, D.C. Dulles Intl-BFS Belfast Intl
20h 40m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen Edinburgh Turnhouse
Multiple Airlines Logo
1:10 pm - 7:05 pmBFS  Belfast Intl-IAD Washington, D.C. Dulles Intl
34h 55m3 stops London Luton Madrid Barajas Casablanca Mohamed V
$767Multiple Airlines
Thu, Oct 22 - Tue, Oct 27
Multiple Airlines Logo
8:30 pm - 7:20 pmIAD  Washington, D.C. Dulles Intl-BFS Belfast Intl
17h 50m2 stops Reykjavik Keflavik Intl Glasgow Intl
Multiple Airlines Logo
8:25 am - 8:05 pmBFS  Belfast Intl-IAD Washington, D.C. Dulles Intl
39h 40m3 stops Manchester Alicante Casablanca Mohamed V
$786Multiple Airlines
Sun, Oct 25 - Sat, Nov 7
Multiple Airlines Logo
8:40 pm - 4:50 pmIAD  Washington, D.C. Dulles Intl-BFS Belfast Intl
16h 10m2 stops Reykjavik Keflavik Intl Glasgow Intl
Multiple Airlines Logo
1:10 pm - 7:05 pmBFS  Belfast Intl-IAD Washington, D.C. Dulles Intl
34h 55m3 stops London Luton Madrid Barajas Casablanca Mohamed V
$789Multiple Airlines
Wed, Sep 30 - Wed, Oct 7
Multiple Airlines Logo
9:55 am - 7:15 pmIAD  Washington, D.C. Dulles Intl-BFS Belfast Intl
28h 20m2 stops Toronto Pearson Intl Edinburgh Turnhouse
Multiple Airlines Logo
6:10 am - 10:15 pmBFS  Belfast Intl-IAD Washington, D.C. Dulles Intl
21h 05m2 stops London Gatwick Reykjavik Keflavik Intl
$794Multiple Airlines
Tue, Sep 29 - Tue, Oct 6
Multiple Airlines Logo
4:00 pm - 7:50 pmIAD  Washington, D.C. Dulles Intl-BFS Belfast Intl
22h 50m2 stops Toronto Pearson Intl Edinburgh Turnhouse
Multiple Airlines Logo
8:50 am - 4:05 pmBFS  Belfast Intl-IAD Washington, D.C. Dulles Intl
36h 15m3 stops London Stansted Madrid Barajas Paris Charles de Gaulle
$800Multiple Airlines
Tue, Sep 29 - Tue, Oct 6
Multiple Airlines Logo
9:45 am - 7:50 pmIAD  Washington, D.C. Dulles Intl-BFS Belfast Intl
29h 05m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl Edinburgh Turnhouse
Multiple Airlines Logo
8:50 am - 8:10 pmBFS  Belfast Intl-IAD Washington, D.C. Dulles Intl
40h 20m3 stops London Stansted Madrid Barajas Paris Charles de Gaulle
$804Multiple Airlines
Thu, Oct 22 - Tue, Oct 27
Multiple Airlines Logo
8:30 pm - 7:20 pmIAD  Washington, D.C. Dulles Intl-BFS Belfast Intl
17h 50m2 stops Reykjavik Keflavik Intl London Gatwick
Multiple Airlines Logo
7:00 am - 7:30 pmBFS  Belfast Intl-IAD Washington, D.C. Dulles Intl
16h 30m2 stops London Gatwick Reykjavik Keflavik Intl
$834Multiple Airlines
Thu, Oct 22 - Tue, Oct 27
Multiple Airlines Logo
8:30 pm - 6:40 pmIAD  Washington, D.C. Dulles Intl-BHD Belfast City
17h 10m2 stops Reykjavik Keflavik Intl London Gatwick
Multiple Airlines Logo
7:20 am - 7:30 pmBHD  Belfast City-IAD Washington, D.C. Dulles Intl
16h 10m2 stops London Gatwick Reykjavik Keflavik Intl
$836Multiple Airlines
Tue, Sep 29 - Tue, Oct 6
Multiple Airlines Logo
5:05 pm - 9:05 pmIAD  Washington, D.C. Dulles Intl-BFS Belfast Intl
23h 00m2 stops Lisbon Humberto Delgado London Gatwick
Multiple Airlines Logo
8:20 am - 3:10 pmBFS  Belfast Intl-IAD Washington, D.C. Dulles Intl
35h 50m2 stops London Gatwick Lisbon Humberto Delgado
$839Multiple Airlines
Wed, Oct 7 - Wed, Oct 21
Multiple Airlines Logo
4:00 pm - 7:15 pmIAD  Washington, D.C. Dulles Intl-BFS Belfast Intl
22h 15m2 stops Toronto Pearson Intl Edinburgh Turnhouse
Multiple Airlines Logo
8:30 am - 10:15 pmBFS  Belfast Intl-IAD Washington, D.C. Dulles Intl
18h 45m2 stops London Stansted Reykjavik Keflavik Intl
$887Multiple Airlines
Booking Insights

Price, demand and travel trends for Washington, D.C. Dulles Intl Airport to Belfast flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Washington, D.C. Dulles Intl Airport to Belfast with more confidence.

What's the cheapest day of the week to fly from Washington, D.C. Dulles Intl Airport to Belfast?

Tuesday is the cheapest day of the week to fly from Washington, D.C. Dulles Intl Airport to Belfast, it is 19% cheaper than the average day. Wednesday is the most expensive day with flight prices 24% higher than average. Based on deals found by KAYAK users in the last 12 months.

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Key details for Washington, D.C. Dulles Intl Airport to Belfast flights

Low season

July

Cheapest flight

$294
Best time to beat the crowds but there is an average 34% increase in price.
Most popular time to fly and prices are also 30% lower on average.
Flight from Washington, D.C. Dulles Intl Airport to Belfast Intl Airport

When to book flights from Dulles Intl to Belfast

Are your dates flexible? Find out the best times to travel from Dulles Intl to Belfast based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Washington, D.C. Dulles Intl Airport to Belfast flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Washington, D.C. Dulles Intl Airport to Belfast?

    Flights from Washington, D.C. Dulles Intl Airport to Belfast usually depart from Washington, D.C. Dulles Intl (IAD) and may arrive at several airports in Belfast area, including Belfast Intl (BFS) and Belfast City (BHD).

  • What cabin classes can I book on flights from Washington, D.C. Dulles Intl Airport to Belfast?

    Only Economy Class is available on flights from Washington, D.C. Dulles Intl Airport to Belfast.

  • Which airports do connecting flights from Washington, D.C. Dulles Intl Airport to Belfast pass through?

    Connecting flights from Washington, D.C. Dulles Intl Airport to Belfast most commonly pass through:

    • London Heathrow (LHR) - 78% of one-stop connections
    • Amsterdam Schiphol (AMS) - 22% of one-stop connections
    Together, these airports account for 100% of one-stop bookings on this route.

  • Can I save money by using flexible dates for flights from Washington, D.C. Dulles Intl Airport to Belfast?

    Yes. Being flexible with your travel dates can save you up to 35% on the Washington, D.C. Dulles Intl Airport to Belfast route. Tuesday is the cheapest departure day at $897 round-trip on average, while Wednesday is the most expensive at $1,373, a difference of $476. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Belfast?

    Some of the most popular sights in Belfast are Cathedral Quarter, Queen's Quarter and Queen's University of Belfast. These are among the most viewed places in Belfast on KAYAK.

  • How long is a flight from Washington, D.C. Dulles Intl Airport to Belfast?

    A nonstop flight from Washington, D.C. Dulles Intl Airport to Belfast takes 0h 00m, covering 3,388 miles.

  • What are the earliest and latest flights from Washington, D.C. Dulles Intl Airport to Belfast?

    These are the earliest and latest flight times available from Washington, D.C. Dulles Intl Airport to Belfast:

    • Earliest: departs at 12:00 am and lands at 12:00 am
    • Latest: departs at 12:00 am and lands at 12:00 am.

    The flight takes about 0h 00m.

  • Do I need a passport to fly from Washington, D.C. Dulles Intl Airport to Belfast?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Washington, D.C. Dulles Intl Airport to Belfast looking right now?

    One-way fares from Washington, D.C. Dulles Intl Airport to Belfast are currently lower than usual. Average one-way flight prices are about $305, which is 42% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Washington, D.C. Dulles Intl Airport to Belfast?

    Flying via Amsterdam Schiphol (AMS) gives the shortest average 1-stop total travel time at 10h 31m, compared with 11h 29m via London Heathrow (LHR).

  • What is the time difference between Washington, D.C. Dulles Intl Airport and Belfast?

    Belfast is 5 hours ahead of Washington, D.C. Dulles Intl Airport (British Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available in Belfast?

    Since Belfast is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
    Near Belfast City Airport (BHD) — daily rates from around $13:

    · Budget
    · Sixt
    · Enterprise Rent-A-Car
    · Hertz
    · Avis

    Near Belfast Intl Airport (BFS) — daily rates from around $11:

    · Budget
    · DRIVALIA
    · Sixt
    · Alamo
    · Hertz

  • How much should I expect to pay for a Washington, D.C. Dulles Intl Airport to Belfast flight?

    Round-trip flights from Washington, D.C. Dulles Intl Airport to Belfast range from $878 to $1,212, with an average of $1,106 over the past 12 months. Anything below $878 counts as a good deal.

Your guide to booking Washington, D.C. Dulles Intl Airport to Belfast flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Tuesday departure instead of Wednesday. On this route, Tuesday flights average $897 - about $476 less than Wednesday (35% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Washington, D.C. Dulles Intl Airport to Belfast trip for April. Fares historically average $773 round-trip in that month - typically $705 less than the most expensive month, which is July (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Belfast City Airport.
    - Titanic Hotel Belfast
    - Premier Inn Belfast Titanic Quarter
    - Park Avenue

Everything you need to know for your flight from Dulles Intl to Belfast

Information on your arrival and departure airports

Washington Dulles Airport (IAD)