Cheap flights from Washington, D.C. to Belfast from $368
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Belfast departing on 6/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Washington, D.C. to Belfast
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
British Airways flights from Washington, D.C. to Belfast
Our best British Airways deals on Washington, D.C. to Belfast flight tickets
KLM flights from Washington, D.C. to Belfast
Our best KLM deals on Washington, D.C. to Belfast flight tickets
See travel insights to Belfast from
How to get the cheapest flight ticket from Washington, D.C. to Belfast
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Belfast?
In general, January is the cheapest month to fly from Washington, D.C. to Belfast. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $611. If you don’t want to visit Belfast in January, then you should wait until February to fly from Washington, D.C., when ticket prices are also cheap, with an average price of $618.
What is the cheapest day to depart on your flight to Belfast?
The cheapest day to depart from Washington, D.C. to Belfast is on a Tuesday when prices can be found for as low as $680. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. to Belfast for around $884.
Cheap Washington, D.C. to Belfast flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Belfast
How far is Washington, D.C. to Belfast by plane?
Washington, D.C. and Belfast are 3373.5 mi apart from one another. In terms of flight time, this usually takes a little over 9h 55m.
When did momondo last update prices for flights from Washington, D.C. to Belfast?
Prices for flights from Washington, D.C. to Belfast refresh daily.
How many operators does momondo search for flights from Washington, D.C. to Belfast?
There is 1 operator available for flights from Washington, D.C. to Belfast as of March 2025.
How old do you have to be to fly from Washington, D.C. to Belfast?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Belfast.
What documentation or ID do you need to fly to Belfast?
The necessary travel and health documents for your Belfast trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
Best airlines flying from Washington, D.C. to Belfast
Compare and see reviews for airlines that fly from Washington, D.C. to Belfast with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $578 | Free Cancellation | Rating 6.6 6,712 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Washington, D.C. to Belfast?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Belfast for you.
Can I find flights from Washington, D.C. to Belfast with flexible booking policies on momondo?
Yes. All flights to Belfast from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Washington, D.C. to Belfast?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Belfast from Washington, D.C..
I’m not ready to book a flight from Washington, D.C. to Belfast right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Washington, D.C. to Belfast flights. All you need is a valid email address and we will do the rest; it is that quick and easy.