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Cheap flights from Portland to Belfast from £281

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 23/10. 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

Find the cheapest flights from Portland to Belfast

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
14:30 - 19:15
PDX
-
BFS
20h 45m
2 stops
Multiple Airlines Logo
06:15 - 09:31
BFS
-
PDX
35h 16m
3 stops
£811Multiple Airlines
Wed, 2 Sep - Wed, 9 Sep
Multiple Airlines Logo
19:00 - 23:15
PDX
-
BFS
20h 15m
3 stops
Multiple Airlines Logo
06:15 - 09:31
BFS
-
PDX
35h 16m
3 stops
£830Multiple Airlines
Wed, 2 Sep - Wed, 9 Sep
Multiple Airlines Logo
14:30 - 19:15
PDX
-
BFS
20h 45m
2 stops
Multiple Airlines Logo
08:15 - 11:50
BFS
-
PDX
35h 35m
2 stops
£849Multiple Airlines
Wed, 2 Sep - Wed, 9 Sep
British Airways Logo
08:00 - 10:30
PDX
-
BHD
18h 30m
2 stops
British Airways Logo
17:35 - 15:50
BHD
-
PDX
30h 15m
1 stop
£908British Airways
Fri, 18 Dec - Sun, 27 Dec
British Airways Logo
08:00 - 10:30
PDX
-
BHD
18h 30m
2 stops
British Airways Logo
17:35 - 15:50
BHD
-
PDX
30h 15m
1 stop
£908British Airways
Fri, 18 Dec - Sun, 27 Dec
British Airways Logo
08:00 - 10:30
PDX
-
BHD
18h 30m
2 stops
British Airways Logo
20:25 - 23:20
BHD
-
PDX
34h 55m
2 stops
£936British Airways
Fri, 18 Dec - Sun, 27 Dec
British Airways Logo
08:00 - 10:30
PDX
-
BHD
18h 30m
2 stops
British Airways Logo
20:25 - 23:20
BHD
-
PDX
34h 55m
2 stops
£936British Airways
Fri, 18 Dec - Sun, 27 Dec
British Airways Logo
08:00 - 10:30
PDX
-
BHD
18h 30m
2 stops
British Airways Logo
17:35 - 15:50
BHD
-
PDX
30h 15m
1 stop
£951British Airways
Fri, 18 Dec - Sun, 27 Dec
British Airways Logo
08:00 - 10:30
PDX
-
BHD
18h 30m
2 stops
British Airways Logo
20:25 - 23:20
BHD
-
PDX
34h 55m
2 stops
£980British Airways
Fri, 18 Dec - Sun, 27 Dec
British Airways Logo
17:45 - 17:15
PDX
-
BHD
15h 30m
1 stop
British Airways Logo
20:25 - 15:50
BHD
-
PDX
27h 25m
1 stop
£981British Airways
Fri, 18 Dec - Sun, 27 Dec

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KLM flights from Portland to Belfast

Our best KLM deals on Portland to Belfast flight tickets
KLM
22 Jul
PDX15:30Portland
17h 25m
2 stops
BHD16:55Belfast City
24 Jul
BHD17:30Belfast City
25h 40m
1 stop
PDX11:10Portland
£1,233
KLM
22 Jul
PDX15:00Portland
17h 55m
2 stops
BHD16:55Belfast City
24 Jul
BHD17:30Belfast City
32h 05m
2 stops
PDX17:35Portland
£1,240

British Airways flights from Portland to Belfast

Our best British Airways deals on Portland to Belfast flight tickets
British Airways
18 Dec
PDX08:00Portland
18h 30m
2 stops
BHD10:30Belfast City
27 Dec
BHD17:35Belfast City
30h 15m
1 stop
PDX15:50Portland
£908
British Airways
18 Dec
PDX08:00Portland
18h 30m
2 stops
BHD10:30Belfast City
27 Dec
BHD17:35Belfast City
30h 15m
1 stop
PDX15:50Portland
£908
British Airways
18 Dec
PDX08:00Portland
18h 30m
2 stops
BHD10:30Belfast City
27 Dec
BHD20:25Belfast City
34h 55m
2 stops
PDX23:20Portland
£936

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 20 July 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

Cheapest return flight

PortlandBelfast

PDX - BFS

PDXBFS

Portland

Wed 2/9

14:30-19:15

2 stops20h 45m

Belfast Intl

Wed 9/9

06:15-09:31

3 stops35h 16m

£811

PortlandBelfast

PDX - BFS

PDXBFS

Portland

Wed 2/9

19:00-23:15

3 stops20h 15m

Belfast Intl

Wed 9/9

06:15-09:31

3 stops35h 16m

£830

PortlandBelfast

PDX - BFS

PDXBFS

Portland

Wed 2/9

14:30-19:15

2 stops20h 45m

Belfast Intl

Wed 9/9

08:15-11:50

2 stops35h 35m

£849

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 18/12

08:00-10:30

2 stops18h 30m

Belfast City

Sun 27/12

17:35-15:50

1 stop30h 15m

£908

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 18/12

08:00-10:30

2 stops18h 30m

Belfast City

Sun 27/12

17:35-15:50

1 stop30h 15m

£908

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 18/12

08:00-10:30

2 stops18h 30m

Belfast City

Sun 27/12

20:25-23:20

2 stops34h 55m

£936

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 18/12

08:00-10:30

2 stops18h 30m

Belfast City

Sun 27/12

20:25-23:20

2 stops34h 55m

£936

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 18/12

08:00-10:30

2 stops18h 30m

Belfast City

Sun 27/12

17:35-15:50

1 stop30h 15m

£951

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 18/12

08:00-10:30

2 stops18h 30m

Belfast City

Sun 27/12

20:25-23:20

2 stops34h 55m

£980
Fastest return journey

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 18/12

17:45-17:15

1 stop15h 30m

Belfast City

Sun 27/12

20:25-15:50

1 stop27h 25m

£981

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

See travel insights to Belfast from

How to get the cheapest flight ticket from Portland 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 airline that flies from Portland to Belfast?

British Airways and American Airlines are the most popular carriers operating from Portland to Belfast

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

12h 30m

Direct flights

None
The fastest flight from Portland to Belfast takes 12h 30m
There are no direct flights from Portland to Belfast. There are no popular flight routes from Portland to Belfast.
Search flight deals

Frequently asked questions about flying 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 12h 30m, 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.

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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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
Belfast Intl Airport
Belfast City Airport