In terms of precipitation, rainfall in Belfast Intl Airport ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Belfast Intl Airport when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Belfast Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

What is the cheapest time of day to fly from PDX to BFS?

When flying from Portland to Belfast Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

If you book a flight to Belfast Intl from Portland, you will be flying from Portland, which is the city’s only airport. Portland (PDX) is located 6.0 mi from the center of Portland. There are 0 flights from Portland to Belfast Intl per day from 0 different airlines.

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

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

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

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

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

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

£744+ Cheap Flights from Portland to Belfast Intl Airport

Cheap flight deals from Portland to Belfast Intl

Enter your travel dates to find the best prices.

Cheapest

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Cheapest flights from Portland to Belfast Intl
Explore the most affordable flight options available from Portland to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 September 2026.

Mon 9/1114:45 -

2 stops17h 40m

Mon 16/1108:30 -

2 stops16h 30m

Deal found 25/9£744

Sat 7/1114:45 -

2 stops17h 20m

Sat 14/1119:05 -

3 stops29h 55m

Deal found 24/9£883

Wed 4/1110:00 -

3 stops25h 05m

Mon 9/1118:25 -

3 stops32h 06m

Deal found 25/9£891

Sun 22/1110:00 -

3 stops25h 40m

Thu 26/1118:35 -

3 stops30h 25m

Deal found 26/9£1,140

Find flight deals from Portland to Belfast Intl

Round-trip from	£744

9/11-16/11
4 total stops
34h 10m total
Portland to Belfast

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Fly to

Route

Depart

Return

Price

Cheapest return flight

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PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Mon 9/11

14:45-16:25

2 stops17h 40m

Belfast Intl

Mon 16/11

08:30-17:00

2 stops16h 30m

£744

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Sat 7/11

14:45-16:05

2 stops17h 20m

Belfast Intl

Sat 14/11

19:05-17:00

3 stops29h 55m

£883

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Wed 4/11

10:00-19:05

3 stops25h 05m

Belfast Intl

Mon 9/11

18:25-18:31

3 stops32h 06m

£891

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Sun 22/11

10:00-19:40

3 stops25h 40m

Belfast Intl

Thu 26/11

18:35-17:00

3 stops30h 25m

£1,140

Flights are sorted by cheapest return flights first.

Deals found on 25/9

Sorted by cheapest first

Best time to book a flight from Portland to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from Portland with our price prediction graph.

PDX-BFS

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.

Related info for your journey

What airport do you fly from for flights from Portland to Belfast Intl?
If you book a flight to Belfast Intl from Portland, you will be flying from Portland, which is the city’s only airport. Portland (PDX) is located 6.0 mi from the center of Portland. There are 0 flights from Portland to Belfast Intl per day from 0 different airlines.
Can I find deals for flights from Portland to Belfast Intl that include hotel bookings?
Yes. In addition to deals on Portland to Belfast Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Portland to Belfast Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Belfast Intl.
Can I find deals for business class flights from Portland to Belfast Intl?
Yes. Cheapflights offers flight deals from Portland to Belfast Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Cheap flights from Portland to Belfast Intl Airport from £744

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portland to Belfast Intl

Cheapest flights from Portland to Belfast IntlExplore the most affordable flight options available from Portland to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 September 2026.

Explore the most affordable flight options available from Portland to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 September 2026.

Best flights from Portland to Belfast IntlDiscover carefully curated flight deals from Portland to Belfast Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 28 September 2026.

Discover carefully curated flight deals from Portland to Belfast Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 28 September 2026.

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Best time to book a flight from Portland to Belfast Intl

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Related info for your journey

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

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

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

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

Travelling to a place near Belfast Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Portland to Belfast Intl

See prices for flight routes from nearby airports that may be better suited for you.

Other flights to Belfast Intl

Explore flights to Belfast Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 28 September 2026.

Complete your trip

Complete your trip to Belfast Intl by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Northern Ireland

Book a non-stop flight to one of these other cities located in Northern Ireland.

Search flights from Portland to Belfast Intl by cabin class

Find flights from Portland to Belfast Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Portland and Belfast Intl flights

Browse other Portland and Belfast Intl flight options. Last updated on 28 September 2026.

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

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

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

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

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Cheapest flights from Portland to Belfast Intl
Explore the most affordable flight options available from Portland to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 September 2026.

Best flights from Portland to Belfast Intl
Discover carefully curated flight deals from Portland to Belfast Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 28 September 2026.