£293 Find cheap flights from Washington, D.C. Dulles Intl Airport to Belfast
This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Belfast departing on 28/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
Return
1 adult
Economy
0 bags
Sun 26/5
Sun 2/6
Search hundreds of travel sites at once for deals on flights to Belfast
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Belfast, as well as popular online travel agencies
...and more
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Belfast, as well as popular online travel agencies
In the last 7 days, travellers have searched 44,335,567 times on KAYAK, and here's why:
Save 28% or moreCompare multiple travel sites with one search.
Filter your dealsChoose cabin class, free Wi-Fi and more.
Bundle and saveSave money when you bundle your flight + hotel.
Cheap flight deals from Dulles Intl to Belfast (IAD-BHD)
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Belfast that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Flights from Dulles Intl to Belfast - Travel Insights & Trends
Get data-powered insights and trends into flights from Dulles Intl to Belfast to help you find the cheapest flights, the best time to fly and much more.
What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Belfast?
To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Washington, D.C. Dulles Intl Airport to Belfast, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Belfast is January, where tickets cost £529 on average. On the other hand, the most expensive months are February and June, where the average cost of tickets is £3,506 and £940 respectively.
Which airlines provide the cheapest flights from Washington Dulles Airport to Belfast?
The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Washington Dulles Airport to Belfast were found on British Airways (£546) and American Airlines (£548). Air France proposed the cheapest one-way flight at £331.
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 return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.
FAQs for booking Washington Dulles Airport to Belfast flights
What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Belfast?
In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Belfast was £366 for a one-way ticket and £682 for a return.
Which aircraft models fly most regularly from Washington Dulles Airport to Belfast?
We unfortunately don’t have that data for this specific route.
Which airline alliances offer flights from Washington Dulles Airport to Belfast?
SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Washington Dulles Airport and Belfast, with SkyTeam being the most commonly used for this route.
How does KAYAK find such low prices on flights from Washington Dulles Airport to Belfast?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Belfast.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Belfast?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast from Washington Dulles Airport is likely to change within 7 days, so travellers know whether to wait or book now.
What is the Hacker Fare option on flights from Washington Dulles Airport to Belfast?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Belfast with an airline and back to Washington Dulles Airport with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Belfast?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Belfast from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.
See more FAQs
Book cheap flights from Washington, D.C. to Belfast
Cheapest flights to Belfast from Washington, D.C. found in 2024
Recent one-way flight deals
Only flying one-way? Below are some of the best one-way flight deals from Washington, D.C. to Belfast found on KAYAK in the last 72 hours.