What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Belfast City Airport round-trip?

Currently priced at $630, American Airlines will fly you from Washington, D.C. Dulles Intl Airport to Belfast City Airport and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from British Airways and Delta - these airlines can fly you to your destination from $643 and $721, respectively. American Airlines is priced at 19% lower than the current average price of a flight leaving 3 months from now.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Belfast City Airport?

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Belfast City Airport flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest day to fly round-trip from Washington, D.C. Dulles Intl Airport to Belfast City Airport?

Sunday is generally a great day to depart. Flying on this day could help you save up to 21%.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Belfast City Airport?

August is one of the best times of the year to fly to Belfast City Airport from Washington, D.C. Dulles Intl Airport. Prices for August average $754 per person but you can even find prices for as low as $585. The most expensive prices can be found in the month of June. Opting for a August flight can save you 63% on your journey compared to booking in June

What is the cheapest time of day to fly from IAD to BHD?

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to Belfast City Airport at noon. If you’re flexible enough to do this you can expect to save up to 1% on your trip compared to booking a flight in the morning.

Can I find deals for flights from Dulles Intl to Belfast City that include hotel bookings?

Yes. In addition to deals on Dulles Intl to Belfast City flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Dulles Intl to Belfast City?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Belfast City.

Can I find deals for business class flights from Dulles Intl to Belfast City?

Yes. Cheapflights offers flight deals from Dulles Intl to Belfast City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$461+ Flights from Washington, D.C. Dulles Intl Airport to Belfast City Airport

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Cheap flight deals from Dulles Intl to Belfast City

Round-trip from	$630 (American Airlines)
Popular in	July
Cheapest in	January
Average price	$1,047

From Washington, D.C. Dulles Intl to Belfast City

Search Deals

Highest demand for flights based on searches. 23% potential increase in price ($240 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease ($49 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in June 2025

Search Deals

Find flight deals from Dulles Intl to Belfast City

Cheapest flights from Dulles Intl to Belfast City
Explore the most affordable flight options available from Dulles Intl to Belfast City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 13, 2025.

Sat 9/65:50 pmIAD - BHD

1 stop11h 20mAmerican Airlines

Sat 12/206:30 amBHD - IAD

1 stop14h 05mAmerican Airlines

Deal found 6/12

$630

Fri 9/55:50 pmIAD - BHD

1 stop10h 00mBritish Airways

Mon 9/87:30 pmBHD - IAD

2 stops24h 30mBritish Airways

Deal found 6/10

$643

Mon 8/48:31 pmIAD - BHD

2 stops15h 24mMultiple Airlines

Wed 8/205:25 pmBHD - IAD

2 stops23h 37mMultiple Airlines

Deal found 6/12

$707

Fri 9/58:23 pmIAD - BHD

2 stops15h 32mDelta

Mon 9/86:30 amBHD - IAD

2 stops18h 13mDelta

Deal found 6/10

$721

Fri 8/18:31 pmIAD - BHD

2 stops15h 24mKLM

Thu 8/76:30 amBHD - IAD

1 stop14h 05mKLM

Deal found 6/10

$754

Tue 10/2810:00 pmIAD - BHD

2 stops14h 25mAer Lingus

Sat 11/16:00 pmBHD - IAD

2 stops26h 35mAer Lingus

Deal found 6/12

$970

Best flights from Dulles Intl to Belfast City
Discover carefully curated flight deals from Dulles Intl to Belfast City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 13, 2025.

Sat 9/65:50 pmIAD - BHD

1 stop11h 20mAmerican Airlines

Sat 12/206:30 amBHD - IAD

1 stop14h 05mAmerican Airlines

Deal found 6/12

$630

Fri 9/55:50 pmIAD - BHD

1 stop10h 00mBritish Airways

Mon 9/87:30 pmBHD - IAD

2 stops24h 30mBritish Airways

Deal found 6/10

$643

Mon 8/48:31 pmIAD - BHD

2 stops15h 24mMultiple Airlines

Wed 8/205:25 pmBHD - IAD

2 stops23h 37mMultiple Airlines

Deal found 6/12

$707

Fri 9/58:23 pmIAD - BHD

2 stops15h 32mDelta

Mon 9/86:30 amBHD - IAD

2 stops18h 13mDelta

Deal found 6/10

$721

Tue 10/2810:00 pmIAD - BHD

2 stops14h 25mAer Lingus

Sat 11/16:00 pmBHD - IAD

2 stops26h 35mAer Lingus

Deal found 6/12

$970

Last-minute flights from Dulles Intl to Belfast City
Discover last-minute flight deals from Dulles Intl to Belfast City. Data last updated June 13, 2025 and is based on user searches.

Fri 6/138:25 pmIAD - BHD

2 stops16h 50mAer Lingus

Fri 7/46:50 amBHD - IAD

2 stops17h 05mAer Lingus

Deal found 6/12

$1,850

Fri 6/135:25 pmIAD - BHD

1 stop18h 30mKLM

Fri 7/46:30 amBHD - IAD

1 stop14h 05mKLM

Deal found 6/10

$1,965

Wed 7/1610:20 amIAD - BHD

2 stops21h 20mMultiple Airlines

Mon 7/216:50 pmBHD - IAD

2 stops24h 29mMultiple Airlines

Deal found 6/10

$945

Wed 7/3010:40 pmIAD - BHD

1 stop11h 55mAmerican Airlines

Sat 8/167:05 amBHD - IAD

1 stop18h 10mAmerican Airlines

Deal found 6/10

$728

Thu 7/318:06 pmIAD - BHD

2 stops14h 24mBritish Airways

Fri 8/82:00 pmBHD - IAD

1 stop11h 10mBritish Airways

Deal found 6/10

$692

Thu 7/317:36 pmIAD - BHD

2 stops16h 19mDelta

Thu 8/76:30 amBHD - IAD

2 stops15h 13mDelta

Deal found 6/10

$1,084

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sat 9/6

5:50 pm-10:10 am

1 stop11h 20m

Belfast City

Sat 12/20

6:30 am-3:35 pm

1 stop14h 05m

$630

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 9/5

5:50 pm-8:50 am

1 stop10h 00m

Belfast City

Mon 9/8

7:30 pm-3:00 pm

2 stops24h 30m

$643

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 8/4

8:31 pm-4:55 pm

2 stops15h 24m

Belfast City

Wed 8/20

5:25 pm-12:02 pm

2 stops23h 37m

$707

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 9/5

8:23 pm-4:55 pm

2 stops15h 32m

Belfast City

Mon 9/8

6:30 am-7:43 pm

2 stops18h 13m

$721

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 8/1

8:31 pm-4:55 pm

2 stops15h 24m

Belfast City

Thu 8/7

6:30 am-3:35 pm

1 stop14h 05m

$754

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 10/28

10:00 pm-4:25 pm

2 stops14h 25m

Belfast City

Sat 11/1

6:00 pm-4:35 pm

2 stops26h 35m

$970

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 7/7

5:50 pm-8:50 am

1 stop10h 00m

$461

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Best time to book a flight from Dulles Intl to Belfast City

Have a flexible travel schedule? Discover the best time to fly to Belfast City from Dulles Intl with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Belfast City Airport

Rainfall in Belfast City by month

In terms of precipitation, rainfall in Belfast City Airport ranges from 2.0 - 3.5 inches per month. October is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Belfast City Airport when rainfall is around 2.0 in.

Temperature in Belfast City by month

If weather is an important factor for your trip to Belfast City Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Belfast City

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,950 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Aer Lingus

7.1

Good

1,118 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

British Airways

6.6

Okay

7,011 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Belfast City Airport round-trip?
Currently priced at $630, American Airlines will fly you from Washington, D.C. Dulles Intl Airport to Belfast City Airport and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from British Airways and Delta - these airlines can fly you to your destination from $643 and $721, respectively. American Airlines is priced at 19% lower than the current average price of a flight leaving 3 months from now.
Can I find deals for flights from Dulles Intl to Belfast City that include hotel bookings?
Yes. In addition to deals on Dulles Intl to Belfast City flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to Belfast City?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Belfast City.
Can I find deals for business class flights from Dulles Intl to Belfast City?
Yes. Cheapflights offers flight deals from Dulles Intl to Belfast City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Newcastle

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Alternative routes for Dulles Intl to Belfast City

Dulles Intl to Belfast Intl flights

Baltimore to Belfast Intl flights

Reagan-National to Belfast Intl flights

Baltimore to Belfast City flights

Reagan-National to Belfast City flights

Top airline flying from Dulles Intl to Belfast City

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest$578	Average$813	FlexibilityNo cancel fee	On-time70%

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$461+ Cheap flights from Dulles Intl (IAD) to Belfast City (BHD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/7. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Belfast City with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Dulles Intl to Belfast City

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Dulles Intl to Belfast City

Cheapest flights from Dulles Intl to Belfast CityExplore the most affordable flight options available from Dulles Intl to Belfast City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 13, 2025.

Explore the most affordable flight options available from Dulles Intl to Belfast City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 13, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Dulles Intl to Belfast City

Have a flexible travel schedule? Discover the best time to fly to Belfast City from Dulles Intl with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Belfast City Airport

Rainfall in Belfast City by month

Plan your trip to Belfast City by taking into account the average rainfall totals by month.

Temperature in Belfast City by month

Plan your trip to Belfast City by taking into account the average temperature totals by month.

Reviews of airlines servicing Belfast City

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Belfast City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Belfast City Airport round-trip?

Can I find deals for flights from Dulles Intl to Belfast City that include hotel bookings?

How can I find direct flights from Dulles Intl to Belfast City?

Can I find deals for business class flights from Dulles Intl to Belfast City?

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dulles Intl to Belfast City

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Dulles Intl to Belfast City

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Book with Flexibility

Travel Smart

Cheapest flights from Dulles Intl to Belfast City
Explore the most affordable flight options available from Dulles Intl to Belfast City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 13, 2025.