Question 1

What is the cheapest month to book a flight from Belfast Intl Airport to Washington, D.C.?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Belfast Intl Airport to Washington, D.C. (average of £599). Flying from Belfast Intl Airport to Washington, D.C. in July is currently the most expensive (average of £947). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 2

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

Accepted Answer

Travellers seeking maximum savings on their Belfast Intl Airport to Washington, D.C. flight should consider departing on Friday at midday when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Question 3

E

Accepted Answer

In terms of precipitation, rainfall in Washington, D.C. ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. when rainfall is around 66.0 mm.

Question 4

E

Accepted Answer

If weather is an important factor for your trip to Washington, D.C., 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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

Question 5

What are the most popular routes from Belfast Intl Airport to Washington, D.C.?

Accepted Answer

The most popular flight routes from Belfast Intl Airport to Washington, D.C. are Belfast Intl - Washington, D.C. Reagan-National, Belfast Intl - Washington, D.C. Dulles Intl and Belfast Intl - Baltimore/Washington.

Question 6

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

Accepted Answer

It’s generally more expensive to depart on a Thursday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

Question 7

What is the cheapest time of day to fly from BFS to WAS?

Accepted Answer

When flying from Belfast Intl Airport to Washington, D.C., the time of day you fly usually plays a role in the price. Save by searching for a flight at midday, which can drop the price by up to 18% versus a flight in the morning.

Question 8

Can I find deals for flights from Belfast Intl to Washington, D.C. that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Belfast Intl to Washington, D.C. flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 9

How can I find direct flights from Belfast Intl to Washington, D.C.?

Accepted Answer

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

Question 10

Can I find deals for business class flights from Belfast Intl to Washington, D.C.?

Accepted Answer

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

Question 11

How does Cheapflights help users find flights from Belfast Intl to Washington, D.C.?

Accepted Answer

When you search for this flight from Belfast Intl to Washington, D.C., Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Question 12

Why should you use Cheapflights to find cheap flight tickets from Belfast Intl to Washington, D.C.?

Accepted Answer

Cheapflights simply makes it quick and affordable to book flights from Belfast Intl to Washington, D.C. by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Question 13

Can Cheapflights find flights from Belfast Intl to Washington, D.C. with no change fees?

Accepted Answer

Yes, we can. To see specific flights from Belfast Intl to Washington, D.C. with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Question 14

Can Cheapflights notify me if prices for flights from Belfast Intl to Washington, D.C. become cheaper?

Accepted Answer

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Washington, D.C. from Belfast Intl today and book when prices fit your budget.

Best time to book a flight from Belfast Intl to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Belfast Intl with our price prediction graph.

Related info for your journey

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

What are the most popular routes from Belfast Intl Airport to Washington, D.C.?

Can I find deals for flights from Belfast Intl to Washington, D.C. that include hotel bookings?

How can I find direct flights from Belfast Intl to Washington, D.C.?

Can I find deals for business class flights from Belfast Intl to Washington, D.C.?

What is the cheapest month to book a flight from Belfast Intl Airport to Washington, D.C.?

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

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 Belfast Intl to Washington, D.C.

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Complete your trip

Complete your trip to Washington, D.C. by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

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Search flights from Belfast Intl to Washington, D.C. by cabin class

Find flights from Belfast Intl to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.

Belfast Intl and Washington, D.C. flights

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Other flights from Belfast Intl

Browse through other flights departing from Belfast Intl. Flights are based on user searches made on Cheapflights and were last updated on 29 August 2025.

Popular flight searches

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Belfast Intl to Washington, D.C. flights

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Other flights to Washington, D.C.

Explore flights to Washington, D.C. departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 29 August 2025.

Top airline flying from Belfast Intl to Washington, D.C.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Belfast Intl to Washington, D.C.?

Why should you use Cheapflights to find cheap flight tickets from Belfast Intl to Washington, D.C.?

Can Cheapflights find flights from Belfast Intl to Washington, D.C. with no change fees?

Can Cheapflights notify me if prices for flights from Belfast Intl to Washington, D.C. become cheaper?

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Cheap flights from Belfast Intl Airport to Washington, D.C.

Best time to book a flight from Belfast Intl to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Belfast Intl with our price prediction graph.

Related info for your journey

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

What are the most popular routes from Belfast Intl Airport to Washington, D.C.?

Can I find deals for flights from Belfast Intl to Washington, D.C. that include hotel bookings?

How can I find direct flights from Belfast Intl to Washington, D.C.?

Can I find deals for business class flights from Belfast Intl to Washington, D.C.?

What is the cheapest month to book a flight from Belfast Intl Airport to Washington, D.C.?

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

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 Belfast Intl to Washington, D.C.

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

Top airline flying from Belfast Intl to Washington, D.C.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Belfast Intl to Washington, D.C.?

Why should you use Cheapflights to find cheap flight tickets from Belfast Intl to Washington, D.C.?

Can Cheapflights find flights from Belfast Intl to Washington, D.C. with no change fees?

Can Cheapflights notify me if prices for flights from Belfast Intl to Washington, D.C. become cheaper?

100% Free

Book with Flexibility

Travel Smart