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Cheap flights from Portland to Belfast from £287

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 23/9. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BHD
13 Sep — 20 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portland to Belfast

Enter your travel dates to find the best prices.

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 14 August 2026.

Mon 28/915:30 -
2 stops21h 10m
Mon 5/1006:10 -
3 stops20h 56m
Deal found 13/8£790
Thu 10/914:30 -
2 stops24h 20m
Wed 16/906:15 -
3 stops35h 16m
Deal found 11/8£832

Find 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 14 August 2026.

Round-trip from

£678

One-way from

£287
British Airways
  • British Airways
  • 31/1-2/2
  • 2 total stops
  • 46h 00m total
  • Portland to Belfast
Search Deals
23/9
  • 23/9
  • 3 total stops
  • 20h 45m total
  • Portland to Belfast
Search Deals

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 14 August 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 Portland - BHD Belfast City

PDXBHD

Portland

Sun 31/1

17:45-16:50

1 stop15h 05m

Belfast City

Tue 2/2

16:55-15:50

1 stop30h 55m

£679

PortlandBelfast

PDX Portland - BHD Belfast City

PDXBHD

Portland

Mon 11/1

17:45-17:25

1 stop15h 40m

Belfast City

Fri 15/1

08:35-15:50

1 stop15h 15m

£679

PortlandBelfast

PDX Portland - BHD Belfast City

PDXBHD

Portland

Fri 29/1

13:20-16:50

1 stop19h 30m

Belfast City

Sun 7/2

17:20-11:20

1 stop26h 00m

£733
Fastest return journey

PortlandBelfast

PDX Portland - BHD Belfast City

PDXBHD

Portland

Fri 29/1

17:45-14:05

1 stop12h 20m

Belfast City

Sun 7/2

06:30-15:50

1 stop17h 20m

£734

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Mon 28/9

15:30-20:40

2 stops21h 10m

Belfast Intl

Mon 5/10

06:10-19:06

3 stops20h 56m

£790

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Thu 10/9

14:30-22:50

2 stops24h 20m

Belfast Intl

Wed 16/9

06:15-09:31

3 stops35h 16m

£832
Cheapest one-way

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Wed 23/9

15:30-20:15

3 stops20h 45m

£287

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Fri 11/9

19:00-07:55

3 stops28h 55m

£296

PortlandBelfast

PDX Portland - BHD Belfast City

PDXBHD

Portland

Fri 11/9

19:00-14:55

3 stops35h 55m

£308
Fastest single journey

PortlandBelfast

PDX Portland - BHD Belfast City

PDXBHD

Portland

Fri 11/9

19:30-20:35

1 stop17h 05m

£458

Flights are sorted by cheapest return flights first.

Deals found on 13/8

Sorted by cheapest first

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 05m. British Airways provides one of the quickest options available for as low as £679. Portland and Belfast are separated by a distance of 4585 mi. This flight may include one or multiple stops.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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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