Cheap flights from the United States to Belfast from $211
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Belfast departing on 7/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from United States 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, December is the cheapest month to fly from United States to Belfast. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $709. If you don’t want to visit Belfast in December, then you should wait until February to fly from United States, when ticket prices are also cheap, with an average price of $742.
What is the cheapest day to depart on your flight to Belfast?
The cheapest day to depart from United States to Belfast is on a Monday when prices can be found for as low as $654. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from United States to Belfast for around $845.
Cheap United States to Belfast flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from United States to Belfast
When did momondo last update prices for flights from United States to Belfast?
Prices for flights from United States to Belfast refresh daily.
How many operators does momondo search for flights from United States to Belfast?
The number of operators available for flights from United States to Belfast is 2 as of May 2025.
How old do you have to be to fly from United States 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 United States to Belfast.
What documentation or ID do you need to fly to Belfast?
The required travel and health documents for your Belfast trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Belfast. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
Best airlines flying from United States to Belfast
Compare and see reviews for airlines that fly from United States to Belfast with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $493 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $544 | Free Cancellation | Rating 6.6 6,845 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from United States to Belfast?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Belfast from United States.
Can I find flights from United States to Belfast with flexible booking policies on momondo?
Yes. All flights to Belfast from United States on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from United States to Belfast?
momondo provides multiple filters to help you find the best flight to Belfast from United States. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from United States to Belfast right now. Can momondo alert me if prices change?
If you are not ready to book a flight from United States to Belfast now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Belfast and let you know when they change.