Cheap flights from Portland to Belfast from £304

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Belfast departing on 20/2. 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
0 bags
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Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
17:45 - 14:15
PDX
-
BHD
12h 30m1 stop
British Airways Logo
15:10 - 16:55
BHD
-
PDX
32h 45m1 stop
£448British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
17:45 - 14:15
PDX
-
BHD
12h 30m1 stop
British Airways Logo
15:10 - 16:55
BHD
-
PDX
32h 45m1 stop
£449British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
12:04 - 19:10
PDX
-
BHD
23h 06m2 stops
British Airways Logo
06:30 - 15:55
BHD
-
PDX
17h 25m1 stop
£451British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
06:40 - 16:35
PDX
-
BHD
25h 55m2 stops
British Airways Logo
09:10 - 15:55
BHD
-
PDX
14h 45m1 stop
£451British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
13:52 - 16:35
PDX
-
BHD
18h 43m2 stops
British Airways Logo
20:25 - 00:15
BHD
-
PDX
34h 50m2 stops
£477British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
12:04 - 16:35
PDX
-
BHD
20h 31m2 stops
British Airways Logo
09:10 - 23:15
BHD
-
PDX
22h 05m2 stops
£478British Airways
Wed, 4 Mar - Sun, 8 Mar
Multiple Airlines Logo
19:30 - 23:05
PDX
-
BFS
19h 35m2 stops
Multiple Airlines Logo
16:50 - 17:40
BFS
-
PDX
32h 50m2 stops
£611Multiple Airlines
Thu, 9 Apr - Mon, 13 Apr
British Airways Logo
19:30 - 17:30
PDX
-
BHD
14h 00m1 stop
British Airways Logo
19:05 - 17:40
BHD
-
PDX
30h 35m1 stop
£631British Airways
Mon, 30 Mar - Sat, 4 Apr
KLM Logo
13:56 - 16:55
PDX
-
BHD
18h 59m2 stops
KLM Logo
17:30 - 11:10
BHD
-
PDX
25h 40m1 stop
£652KLM
Mon, 30 Mar - Sat, 4 Apr
KLM Logo
13:56 - 16:55
PDX
-
BHD
18h 59m2 stops
KLM Logo
17:30 - 19:03
BHD
-
PDX
33h 33m2 stops
£660KLM
Mon, 30 Mar - Sat, 4 Apr

British Airways flights from Portland to Belfast

Our best British Airways deals on Portland to Belfast flight tickets
British Airways
4 Mar
PDX17:45Portland
12h 30m
1 stop
BHD14:15Belfast City
8 Mar
BHD15:10Belfast City
32h 45m
1 stop
PDX16:55Portland
£448
British Airways
4 Mar
PDX12:04Portland
23h 06m
2 stops
BHD19:10Belfast City
8 Mar
BHD06:30Belfast City
17h 25m
1 stop
PDX15:55Portland
£451
British Airways
4 Mar
PDX06:40Portland
25h 55m
2 stops
BHD16:35Belfast City
8 Mar
BHD09:10Belfast City
14h 45m
1 stop
PDX15:55Portland
£451

KLM flights from Portland to Belfast

Our best KLM deals on Portland to Belfast flight tickets
KLM
30 Mar
PDX13:56Portland
18h 59m
2 stops
BHD16:55Belfast City
4 Apr
BHD17:30Belfast City
25h 40m
1 stop
PDX11:10Portland
£652
KLM
30 Mar
PDX13:56Portland
18h 59m
2 stops
BHD16:55Belfast City
4 Apr
BHD17:30Belfast City
33h 33m
2 stops
PDX19:03Portland
£660

momondo Fare Finder

 
Customise your flight search to find flights from Portland to Belfast that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 9 January 2026.
Use the filters below to find and compare flights from Portland to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 4/3

17:45-14:15

1 stop12h 30m

Belfast City

Sun 8/3

15:10-16:55

1 stop32h 45m

£448

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 4/3

17:45-14:15

1 stop12h 30m

Belfast City

Sun 8/3

15:10-16:55

1 stop32h 45m

£449

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 4/3

12:04-19:10

2 stops23h 06m

Belfast City

Sun 8/3

06:30-15:55

1 stop17h 25m

£451

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 4/3

06:40-16:35

2 stops25h 55m

Belfast City

Sun 8/3

09:10-15:55

1 stop14h 45m

£451

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 4/3

13:52-16:35

2 stops18h 43m

Belfast City

Sun 8/3

20:25-00:15

2 stops34h 50m

£477

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 4/3

12:04-16:35

2 stops20h 31m

Belfast City

Sun 8/3

09:10-23:15

2 stops22h 05m

£478

PortlandBelfast

PDX - BFS

PDXBFS

Portland

Thu 9/4

19:30-23:05

2 stops19h 35m

Belfast Intl

Mon 13/4

16:50-17:40

2 stops32h 50m

£611

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Mon 30/3

19:30-17:30

1 stop14h 00m

Belfast City

Sat 4/4

19:05-17:40

1 stop30h 35m

£631

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Mon 30/3

13:56-16:55

2 stops18h 59m

Belfast City

Sat 4/4

17:30-11:10

1 stop25h 40m

£652

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Mon 30/3

13:56-16:55

2 stops18h 59m

Belfast City

Sat 4/4

17:30-19:03

2 stops33h 33m

£660

Flights are sorted by cheapest return flights first.

Showing 1-10 of 11 resultsSorted by cheapest first
1
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Cheap Portland to Belfast flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Belfast

Fastest flight time

14h 50m

Direct flights

None
The fastest flight from Portland to Belfast takes 14h 50m
There are no direct flights from Portland to Belfast. There are no popular flight routes from Portland to Belfast.
  • How far is Portland to Belfast by plane?

    Belfast is 4590.7 mi away from Portland. Flights usually cover this in 14h 50m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Portland Airport to Belfast?

    Prices for flights from Portland Airport to Belfast are updated daily.

  • How old do you have to be to fly from Portland Airport 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 Portland Airport 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.

  • How do I get Price Alerts for flights from Portland to Belfast?

    Search flight deals from Portland to Belfast. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Portland to Belfast with momondo?

    By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Belfast?

It is quick and easy to find Portland to Belfast flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Belfast that suits you.

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

Yes. momondo allows you to filter the results for Portland to Belfast flights to just show those with flexible booking policies.

How can momondo help me find flights from Portland to Belfast?

Once all potential Portland to Belfast flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Portland to Belfast flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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1 adult
Sun 8/2
Sun 15/2

Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 12.2 mi from Belfast