Question 1

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

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport (average of £599). Flying from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport?

Accepted Answer

Travellers seeking maximum savings on their Belfast Intl Airport to Washington, D.C. Dulles Intl Airport flight should consider departing on Friday at midday when fares are most often at their lowest. Friday at midday 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. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl 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 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 is the cheapest time of day to fly from BFS to IAD?

Accepted Answer

When flying from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport, 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 11% versus a flight in the morning.

Question 6

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

Accepted Answer

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

Question 7

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

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 Dulles Intl.

Question 8

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

Accepted Answer

Yes. Cheapflights offers flight deals from Belfast Intl to Dulles Intl 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 9

How does Cheapflights help users find flights from Belfast Intl to Dulles Intl?

Accepted Answer

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Dulles Intl from Belfast Intl today with Cheapflights!

Question 10

Why should you use Cheapflights to find cheap flight tickets from Belfast Intl to Dulles Intl?

Accepted Answer

Cheapflights helps you find that perfect flight to Dulles Intl from Belfast Intl by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Question 11

Can Cheapflights find flights from Belfast Intl to Dulles Intl with no change fees?

Accepted Answer

Need flexible booking options for your flight to Dulles Intl from Belfast Intl? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Question 12

Can Cheapflights notify me if prices for flights from Belfast Intl to Dulles Intl become cheaper?

Accepted Answer

Of course! You can now track prices for flights from Belfast Intl to Dulles Intl and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

Cheap flights from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport from £304

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 27/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find flight deals from Belfast Intl to Dulles Intl

One-way flights from Belfast Intl to Dulles IntlSearch for one-way flight options from Belfast Intl to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 15 July 2025.

Search for one-way flight options from Belfast Intl to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 15 July 2025.

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

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl 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 Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

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Alternative routes for Belfast Intl to Dulles Intl

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How does Cheapflights help users find flights from Belfast Intl to Dulles Intl?

Why should you use Cheapflights to find cheap flight tickets from Belfast Intl to Dulles Intl?

Can Cheapflights find flights from Belfast Intl to Dulles Intl with no change fees?

Can Cheapflights notify me if prices for flights from Belfast Intl to Dulles Intl become cheaper?

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One-way flights from Belfast Intl to Dulles Intl
Search for one-way flight options from Belfast Intl to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 15 July 2025.