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 OR to BFS?

When flying from Oregon 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.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Oregon 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.

£290+ Cheap Flights from Oregon to Belfast Intl Airport

Cheap flight deals from Oregon to Belfast Intl

Enter your travel dates to find the best prices.

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Cheapest flights from Oregon to Belfast Intl
Explore the most affordable flight options available from Oregon to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2026.

Mon 26/1015:45 -

3 stops21h 25m

Mon 2/1120:45 -

3 stops44h 41m

Deal found 10/9£714

Thu 22/1015:30 -

3 stops24h 25m

Thu 29/1017:40 -

3 stops31h 20m

Deal found 7/9£834

Sat 24/1015:30 -

2 stops22h 55m

Fri 6/1107:45 -

2 stops17h 15m

Deal found 9/9£856

Fri 23/1010:10 -

3 stops20h 15m

Fri 30/1006:30 -

2 stops18h 30m

Deal found 8/9£1,113

Wed 7/1010:10 -

3 stops22h 00m

Wed 14/1007:35 -

2 stops18h 20m

Deal found 9/9£1,142

Thu 8/1010:10 -

3 stops28h 15m

Wed 14/1007:35 -

2 stops18h 20m

Deal found 9/9£1,221

Find flight deals from Oregon to Belfast Intl

Round-trip from	£714
One-way from	£290

26/10-2/11
6 total stops
66h 06m total
Oregon to Belfast

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8/10-31/12
3 total stops
34h 57m total
Oregon to Belfast

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

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Depart

Return

Price

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PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Thu 8/10

21:33-16:30

3 stops34h 57m

Belfast Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£290

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Mon 26/10

15:45-20:10

3 stops21h 25m

Belfast Intl

Mon 2/11

20:45-09:26

3 stops44h 41m

£714

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Sat 24/10

15:30-22:25

2 stops22h 55m

Belfast Intl

Fri 6/11

07:45-17:00

2 stops17h 15m

£856

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Thu 22/10

15:30-23:05

2 stops23h 35m

Belfast Intl

Thu 29/10

17:40-18:00

3 stops31h 20m

£941

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Fri 23/10

10:10-14:25

3 stops20h 15m

Belfast Intl

Fri 30/10

06:30-18:00

2 stops18h 30m

£1,113

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Wed 7/10

10:10-16:10

3 stops22h 00m

Belfast Intl

Wed 14/10

07:35-20:58

3 stops21h 23m

£1,198

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Thu 8/10

10:10-22:25

3 stops28h 15m

Belfast Intl

Wed 14/10

07:35-17:55

2 stops18h 20m

£1,221

PortlandBelfast

PDX Portland - BFS Belfast Intl

PDXBFS

Portland

Sun 7/2

07:00-13:55

3 stops22h 55m

Belfast Intl

Tue 9/2

08:25-17:00

2 stops16h 35m

£1,740

Flights are sorted by cheapest return flights first.

Deals found on 9/9

Sorted by cheapest first

Best time to book a flight from Oregon to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from Oregon 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.

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Everything you need to know about your flight from Oregon to Belfast Intl Airport

USOR-BFS

PDX-BFS

No data available for this route at this time. Please check back soon.

Related info for your journey

Can I find deals for flights from Oregon to Belfast Intl that include hotel bookings?
Yes. In addition to deals on Oregon to Belfast Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Oregon to Belfast Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Oregon to Belfast Intl.
Can I find deals for business class flights from Oregon to Belfast Intl?
Yes. Cheapflights offers flight deals from Oregon 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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Can Cheapflights find flights from Oregon to Belfast Intl with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Oregon to Belfast Intl, users can toggle the no change fees filter when performing a flight search.

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

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Cheap flights from Oregon to Belfast Intl Airport from £290

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Oregon to Belfast Intl

Cheapest flights from Oregon to Belfast IntlExplore the most affordable flight options available from Oregon to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2026.

Explore the most affordable flight options available from Oregon to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2026.

Best flights from Oregon to Belfast IntlDiscover carefully curated flight deals from Oregon to Belfast Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Discover carefully curated flight deals from Oregon to Belfast Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Last-minute flights from Oregon to Belfast IntlDiscover last-minute flight deals from Oregon to Belfast Intl. Data last updated 11 September 2026 and is based on user searches.

Discover last-minute flight deals from Oregon to Belfast Intl. Data last updated 11 September 2026 and is based on user searches.

One-way flights from Oregon to Belfast IntlSearch for one-way flight options from Oregon to Belfast Intl. Find affordable one-way fares based on user searches. Data last updated 11 September 2026.

Search for one-way flight options from Oregon to Belfast Intl. Find affordable one-way fares based on user searches. Data last updated 11 September 2026.

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Best time to book a flight from Oregon to Belfast Intl

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Related info for your journey

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

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

Can I find deals for business class flights from Oregon 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 Oregon 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 11 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 Oregon to Belfast Intl by cabin class

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

Oregon and Belfast Intl flights

Browse other Oregon and Belfast Intl flight options. Last updated on 11 September 2026.

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Cheapest flights from Oregon to Belfast Intl
Explore the most affordable flight options available from Oregon to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2026.

Best flights from Oregon to Belfast Intl
Discover carefully curated flight deals from Oregon to Belfast Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Last-minute flights from Oregon to Belfast Intl
Discover last-minute flight deals from Oregon to Belfast Intl. Data last updated 11 September 2026 and is based on user searches.

One-way flights from Oregon to Belfast Intl
Search for one-way flight options from Oregon to Belfast Intl. Find affordable one-way fares based on user searches. Data last updated 11 September 2026.