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

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

How can I save money on flights from Portland to Belfast Intl Airport 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.

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

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

How old do you have to be to fly from Portland Airport to Belfast Intl Airport?

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 Intl Airport.

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

The required travel and health documents for your Belfast Intl Airport 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 Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£865 Cheap Flights from Portland to Belfast Intl Airport in 2026/27

Find the cheapest flights from Portland to Belfast

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

15:30 - 21:30PDX Portland-BFS Belfast Intl

22h 00m2 stops Reykjavik Keflavik Intl Edinburgh Turnhouse

17:05 - 12:05BFS Belfast Intl-PDX Portland

27h 00m3 stops Manchester Kastrup Copenhagen Reykjavik Keflavik Intl

£865Multiple Airlines

Sat, 8 May - Sat, 15 May

15:30 - 21:30PDX Portland-BFS Belfast Intl

22h 00m2 stops Reykjavik Keflavik Intl Edinburgh Turnhouse

13:25 - 12:05BFS Belfast Intl-PDX Portland

30h 40m2 stops Malaga Reykjavik Keflavik Intl

£990Multiple Airlines

Sat, 8 May - Sat, 15 May

07:00 - 18:50PDX Portland-BFS Belfast Intl

27h 50m3 stops Vancouver Intl Toronto Pearson Intl Paris Charles de Gaulle

07:05 - 09:26BFS Belfast Intl-PDX Portland

34h 21m3 stops Paris Charles de Gaulle Montreal Pierre Elliott Trudeau Intl Vancouver Intl

£1,212Multiple Airlines

Tue, 22 Dec - Tue, 29 Dec

08:55 - 17:10PDX Portland-BFS Belfast Intl

24h 15m3 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl Amsterdam Schiphol

15:10 - 12:05BFS Belfast Intl-PDX Portland

28h 55m3 stops London Stansted Kastrup Copenhagen Reykjavik Keflavik Intl

£1,258Multiple Airlines

Sat, 8 May - Sat, 15 May

10:00 - 22:20PDX Portland-BFS Belfast Intl

28h 20m3 stops Vancouver Intl Frankfurt am Main Birmingham

18:05 - 14:41BFS Belfast Intl-PDX Portland

28h 36m3 stops Birmingham Frankfurt am Main Vancouver Intl

£2,402Multiple Airlines

Mon, 21 Dec - Mon, 28 Dec

17:45 - 20:35PDX Portland-BFS Belfast Intl

18h 50m2 stops London Heathrow Glasgow Intl

06:20 - 15:50BFS Belfast Intl-PDX Portland

17h 30m2 stops Glasgow Intl London Heathrow

£2,474Multiple Airlines

Mon, 21 Dec - Mon, 28 Dec

14:45 - 12:35PDX Portland-BFS Belfast Intl

13h 50m2 stops Reykjavik Keflavik Intl Edinburgh Turnhouse

18:05 - 14:41BFS Belfast Intl-PDX Portland

28h 36m3 stops Birmingham Frankfurt am Main Vancouver Intl

£2,721Multiple Airlines

Mon, 21 Dec - Mon, 28 Dec

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Use the filters below to find and compare flights from Portland to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Sat 8/5

15:30-21:30

2 stops22h 00m

Belfast Intl

Sat 15/5

17:05-12:05

3 stops27h 00m

£865

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Sat 8/5

15:30-21:30

2 stops22h 00m

Belfast Intl

Sat 15/5

13:25-12:05

2 stops30h 40m

£990

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Tue 22/12

07:00-18:50

3 stops27h 50m

Belfast Intl

Tue 29/12

07:05-09:26

3 stops34h 21m

£1,212

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Sat 8/5

08:55-17:10

3 stops24h 15m

Belfast Intl

Sat 15/5

15:10-12:05

3 stops28h 55m

£1,258

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Mon 21/12

10:00-22:20

3 stops28h 20m

Belfast Intl

Mon 28/12

18:05-14:41

3 stops28h 36m

£2,402

Fastest return journey

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Mon 21/12

17:45-20:35

2 stops18h 50m

Belfast Intl

Mon 28/12

06:20-15:50

2 stops17h 30m

£2,474

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Mon 21/12

14:45-12:35

2 stops13h 50m

Belfast Intl

Mon 28/12

18:05-14:41

3 stops28h 36m

£2,721

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from Portland to Belfast Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Belfast Intl Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Portland to Belfast Intl Airport (PDX to BFS) flight deals and tips

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

Best price found	£865
Fastest flight time	16h 10m
Direct flights	None

The best flight deal from Portland to Belfast Intl Airport found on momondo in the last 72 hours is £865

The fastest flight from Portland to Belfast Intl Airport takes 16h 10m

There are no direct flights from Portland to Belfast Intl Airport. There are no popular flight routes from Portland to Belfast Intl Airport.

Search flight deals

Frequently asked questions about flying from Portland to Belfast Intl Airport

How far is Portland to Belfast Intl by plane?
The straight-line distance from Portland to Belfast Intl is 4579.8 mi. Flights usually cover this in 16h 10m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Portland Airport to Belfast Intl Airport?
Prices for flights from Portland Airport to Belfast Intl Airport are updated daily.
How old do you have to be to fly from Portland Airport to Belfast Intl Airport?
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 Intl Airport.
What documentation or ID do you need to fly to Belfast Intl Airport?
The required travel and health documents for your Belfast Intl Airport 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 Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Frequently asked questions about flying from Portland to Belfast Intl Airport

How do I get Price Alerts for flights from Portland to Belfast Intl Airport?
Search flight deals from Portland to Belfast Intl Airport. While viewing offers you’ll have the option to create a Price Alert.
How can I save money on flights from Portland to Belfast Intl Airport 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.

Ballymena

Newry

Armagh

Cookstown

Dungannon

Portadown

Why use momondo?

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

Finding the right flight to Belfast from Portland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Belfast quick and easy, saving you time and money.

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

Flights from Portland to Belfast with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Portland to Belfast flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Belfast from Portland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.