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Flights to Belfast

$276 Cheap flights to Belfast

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Belfast departing on 7/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from the United States to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:50 pm - 11:20 pm
BOS
-
BFS
21h 30m
2 stops
Multiple Airlines Logo
7:35 am - 2:45 pm
BFS
-
BOS
36h 10m
3 stops
$711Multiple Airlines
Mon, Aug 17 - Tue, Sep 1
Multiple Airlines Logo
5:50 am - 9:10 pm
BOS
-
BFS
34h 20m
3 stops
Multiple Airlines Logo
8:50 am - 2:45 pm
BFS
-
BOS
34h 55m
3 stops
$767Multiple Airlines
Wed, Sep 9 - Tue, Sep 22
Multiple Airlines Logo
10:50 am - 5:05 pm
BOS
-
BFS
25h 15m
2 stops
Multiple Airlines Logo
8:50 am - 2:45 pm
BFS
-
BOS
34h 55m
3 stops
$771Multiple Airlines
Wed, Sep 9 - Tue, Sep 22
Multiple Airlines Logo
10:45 pm - 11:45 pm
BOS
-
BFS
20h 00m
2 stops
Multiple Airlines Logo
4:10 pm - 8:20 pm
BFS
-
BOS
33h 10m
2 stops
$772Multiple Airlines
Tue, Sep 1 - Sun, Sep 6
British Airways Logo
10:30 pm - 2:35 pm
BOS
-
BHD
12h 05m
1 stop
British Airways Logo
11:25 am - 7:40 pm
BHD
-
BOS
13h 15m
1 stop
$866British Airways
Wed, Oct 28 - Tue, Nov 3
British Airways Logo
5:28 pm - 10:15 am
BOS
-
BHD
12h 47m
2 stops
British Airways Logo
3:05 pm - 9:50 pm
BHD
-
BOS
11h 45m
1 stop
$871British Airways
Wed, Oct 28 - Tue, Nov 3
American Airlines Logo
11:30 pm - 2:35 pm
CLT
-
BHD
11h 05m
1 stop
American Airlines Logo
8:45 am - 6:25 pm
BHD
-
CLT
14h 40m
1 stop
$894American Airlines
Wed, Oct 28 - Tue, Nov 3
American Airlines Logo
11:30 pm - 2:35 pm
CLT
-
BHD
11h 05m
1 stop
American Airlines Logo
8:45 am - 6:25 pm
BHD
-
CLT
14h 40m
1 stop
$895American Airlines
Wed, Oct 28 - Tue, Nov 3
KLM Logo
9:20 pm - 4:50 pm
MSP
-
BHD
13h 30m
1 stop
KLM Logo
5:20 pm - 12:42 pm
BHD
-
MSP
25h 22m
1 stop
$924KLM
Wed, Nov 25 - Wed, Dec 2
KLM Logo
9:20 pm - 4:50 pm
MSP
-
BHD
13h 30m
1 stop
KLM Logo
5:20 pm - 12:42 pm
BHD
-
MSP
25h 22m
1 stop
$925KLM
Wed, Nov 25 - Wed, Dec 2

momondo Fare Finder

 
Locate flights to Belfast that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 832,500 searches and data was last updated on July 12, 2026.
Use the filters below to find and compare flights to Belfast that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest round-trip

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Mon 8/17

8:50 pm-11:20 pm

2 stops21h 30m

Belfast Intl

Tue 9/1

7:35 am-2:45 pm

3 stops36h 10m

$711

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Wed 9/9

5:50 am-9:10 pm

3 stops34h 20m

Belfast Intl

Tue 9/22

8:50 am-2:45 pm

3 stops34h 55m

$767

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Wed 9/9

10:50 am-5:05 pm

2 stops25h 15m

Belfast Intl

Tue 9/22

8:50 am-2:45 pm

3 stops34h 55m

$771

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Tue 9/1

10:45 pm-11:45 pm

2 stops20h 00m

Belfast Intl

Sun 9/6

4:10 pm-8:20 pm

2 stops33h 10m

$772

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Wed 10/28

10:30 pm-2:35 pm

1 stop12h 05m

Belfast City

Tue 11/3

11:25 am-7:40 pm

1 stop13h 15m

$866
Quickest round-trip

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Wed 10/28

5:28 pm-10:15 am

2 stops12h 47m

Belfast City

Tue 11/3

3:05 pm-9:50 pm

1 stop11h 45m

$871

CharlotteBelfast

CLT - BHD

CLTBHD

Charlotte Douglas

Wed 10/28

11:30 pm-2:35 pm

1 stop11h 05m

Belfast City

Tue 11/3

8:45 am-6:25 pm

1 stop14h 40m

$894

CharlotteBelfast

CLT - BHD

CLTBHD

Charlotte Douglas

Wed 10/28

11:30 pm-2:35 pm

1 stop11h 05m

Belfast City

Tue 11/3

8:45 am-6:25 pm

1 stop14h 40m

$895

MinneapolisBelfast

MSP - BHD

MSPBHD

Minneapolis St Paul

Wed 11/25

9:20 pm-4:50 pm

1 stop13h 30m

Belfast City

Wed 12/2

5:20 pm-12:42 pm

1 stop25h 22m

$924

MinneapolisBelfast

MSP - BHD

MSPBHD

Minneapolis St Paul

Wed 11/25

9:20 pm-4:50 pm

1 stop13h 30m

Belfast City

Wed 12/2

5:20 pm-12:42 pm

1 stop25h 22m

$925

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to Belfast from

Belfast flights insights and trends

Explore insights for your Belfast flight to craft the best travel plan

What is the cheapest month to fly to Belfast?

In general, November 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 $460. If you don’t want to visit Belfast in November, then you should wait until April to fly from United States, when ticket prices are also cheap, with an average price of $523.

Cheapest flights to Belfast

Find the cheapest flights to Belfast from your nearest city or airport

Cheap Belfast flight deals and tips

Summary info about Belfast flight prices, duration and airlines

Best One-Way Price

$276

Best Round-Trip Price

$711

Fastest flight time

17h 21m

Popular in

December
The best one-way flight price to Belfast from United States in the last 5 days is $276 (Boston Logan Intl to Belfast Intl).
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The best round-trip flight price to Belfast from United States in the last 5 days is $711 (Boston Logan Intl to Belfast Intl).
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The fastest flight to Belfast from United States takes 17h 21m (Minneapolis St Paul to Belfast City).
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December has the highest demand for flights to Belfast, with a 7% price increase on average.
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Frequently asked questions about flying to Belfast

Is there an alternative airport near Belfast?

Those flying to Belfast could potentially find better pricing at Belfast City Airport (3 mi from Belfast city center), Londonderry Eglinton Airport (58 mi from Belfast city center), Campbeltown Machrihanish Airport (59 mi from Belfast city center), Isle of Islay Glenegedale Airport (76 mi from Belfast city center) or Glasgow Prestwick Airport (82 mi from Belfast city center) depending on the month and departure airport.

Is there a cheaper alternative to flying into Belfast?

Belfast City Airport has an average price of $171 per person and is typically the cheapest airport to fly into when visiting Belfast. This average price does vary based on departure city. Try momondo’s Airport-to-Airport Pricing Tool to find the cheapest flight.

What is the absolute cheapest flight to Belfast?

$28 is the cheapest deal found on momondo in the last two weeks for a flight to Belfast. This flight is from Edinburgh and is 88% cheaper than most flights to Belfast. To find the cheapest price to Belfast from your area, use momondo’s Airport-to-Airport Pricing Tool.

What’s the closest airport to Queen's Quarter?

At 3.2 mi away, Belfast City airport in Belfast is the closest to Queen's Quarter.

When did momondo last update prices for flights to Belfast?

Prices for flights to Belfast were last updated today.

How many operators does momondo search for flights to Belfast?

As of July 2026, there are 9 operators available to choose from for flights to Belfast.

How old do you have to be to fly 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 to Belfast.

What documentation or ID do you need to fly to Belfast?

The travel and health documents you'll need for your trip to Belfast may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Belfast. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal 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.

Can I find flights to Belfast with flexible booking policies on momondo?

momondo does allow users to show only those flights to Belfast which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights 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 filter your options to help you make an informed choice when booking flights to Belfast.

I’m not ready to book a flight to Belfast right now. Can momondo alert me if prices change?

Price alerts on flights to Belfast are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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