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Cheap flights from Portland to Belfast from £299

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BHD
24 Aug — 31 Aug1
1 adult

Cheap flight deals from Portland to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Belfast (BF1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 19 August 2025.

Round-trip from

£539

One-way from

£299
British Airways
  • British Airways
  • 25/9-29/9
  • 3 total stops
  • 53h 30m total
  • Portland to Belfast
Search Deals
British Airways
  • British Airways
  • 7/9
  • 1 total stop
  • 33h 30m total
  • Portland to Belfast
Search Deals

Find flight deals from Portland to Belfast

Cheapest flights from Portland to Belfast
Explore the most affordable flight options available from Portland to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 August 2025.

Thu 25/919:25PDX - BHD
1 stop15h 55mBritish Airways
Mon 29/918:30BHD - PDX
2 stops37h 35mBritish Airways
Deal found 17/8£539
Sat 23/813:15PDX - BHD
1 stop19h 40mDelta
Sun 31/806:30BHD - PDX
1 stop12h 30mDelta
Deal found 18/8£700
Thu 25/919:25PDX - BFS
1 stop14h 50mMultiple Airlines
Mon 29/912:35BFS - PDX
2 stops40h 15mMultiple Airlines
Deal found 17/8£755
Sat 23/813:20PDX - BHD
2 stops35h 45mBritish Airways
Sun 31/806:50BHD - PDX
2 stops24h 36mBritish Airways
Deal found 17/8£780
Sat 20/1213:40PDX - BHD
2 stops43h 10mBritish Airways
Mon 5/114:40BHD - PDX
2 stops34h 17mBritish Airways
Deal found 18/8£1,214
Fri 19/1217:45PDX - BHD
1 stop30h 30mBritish Airways
Sat 3/115:05BHD - PDX
1 stop32h 50mBritish Airways
Deal found 18/8£1,330
Sat 6/915:20PDX - BFS
2 stops16h 10mMultiple Airlines
Sat 27/907:30BFS - PDX
2 stops18h 25mMultiple Airlines
Deal found 17/8£1,942
Fri 19/1217:45PDX - BFS
2 stops17h 10mMultiple Airlines
Sat 3/109:20BFS - PDX
2 stops38h 35mMultiple Airlines
Deal found 18/8£2,600

Cheapflights 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, Cheapflights users made 858,174 searches. Data last updated 19 August 2025.
Use the filters below to find and compare flights from Portland to Belfast that are best for you.

Fly from

Portland

Fly to

Belfast

Route

Depart

Return

Price

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Thu 25/9

19:25-19:20

1 stop15h 55m

Belfast City

Mon 29/9

18:30-00:05

2 stops37h 35m

£539

PortlandBelfast

PDX - BFS

PDXBFS

Portland

Thu 25/9

19:25-18:15

1 stop14h 50m

Belfast Intl

Mon 29/9

12:35-20:50

2 stops40h 15m

£755

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sat 20/12

13:40-16:50

2 stops43h 10m

Belfast City

Mon 5/1

14:40-16:57

2 stops34h 17m

£1,214

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 19/12

17:45-08:15

1 stop30h 30m

Belfast City

Sat 3/1

15:05-15:55

1 stop32h 50m

£1,330

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Thu 25/9

06:15-12:40

3 stops22h 25m

Belfast City

Mon 29/9

14:30-17:55

2 stops35h 25m

£1,385

PortlandBelfast

PDX - BFS

PDXBFS

Portland

Sat 6/9

15:20-15:30

2 stops16h 10m

Belfast Intl

Sat 27/9

07:30-17:55

2 stops18h 25m

£1,942

PortlandBelfast

PDX - BFS

PDXBFS

Portland

Fri 19/12

17:45-18:55

2 stops17h 10m

Belfast Intl

Sat 3/1

09:20-15:55

2 stops38h 35m

£2,600

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sun 7/9

19:25-12:55

1 stop33h 30m

£299

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sat 6/9

19:25-17:15

1 stop13h 50m

£325

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sun 7/9

13:20-16:55

2 stops19h 35m

£371

Flights are sorted by cheapest return flights first.

Deals found on 17/8

Showing 1-10 of 14 results
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Best time to book a flight from Portland to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Portland with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to Belfast
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Portland to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Portland to Belfast?

    Portland (PDX), located 6.0 mi from the city center, is the airport you fly out of when you book flights from Portland to Belfast. 0 airlines have flights from Portland to Belfast on a regular basis. Booking flights from Portland to Belfast should not be difficult; the airport handles an average of 0 outbound flights to Belfast per day.

  • How long is the flight from Portland to Belfast?

    A quick flight from Portland to Belfast can take about 15h 55m. British Airways provides one of the quickest options available for as low as £539. Portland and Belfast are separated by a distance of 4585 mi.

  • Can I find deals for flights from Portland to Belfast that include hotel bookings?

    Yes. In addition to deals on Portland to Belfast flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Portland to Belfast?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Belfast.

  • Can I find deals for business class flights from Portland to Belfast?

    Yes. Cheapflights offers flight deals from Portland to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland to Belfast?

    Currently, January is the cheapest month in which you can book a flight from Portland to Belfast (average of £67). Flying from Portland to Belfast in July is currently the most expensive (average of £90). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Portland to Belfast

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Belfast Intl flights
Portland to Belfast City flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Portland to Belfast?

Cheapflights helps you search for flights from Portland to Belfast via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Portland to Belfast?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Belfast from Portland.

Can Cheapflights find flights from Portland to Belfast with no change fees?

Certainly. Search results for flights to Belfast from Portland shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Portland to Belfast become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Belfast from Portland today and book when prices fit your budget.

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