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Cheap flights from Portland to Belfast Intl Airport from £414

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 15/5. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BFS
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portland to Belfast Intl

Enter your travel dates to find the best prices.

One-way flights from Portland to Belfast Intl
Search for one-way flight options from Portland to Belfast Intl. Find affordable one-way fares based on user searches. Data last updated 12 December 2025.

Fri 15/507:23PDX - BFS
3 stops30h 27mMultiple Airlines
Deal found 11/12£414

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portland to Belfast Intl 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 12 December 2025.
Use the filters below to find and compare flights from Portland to Belfast Intl Airport that are best for you.

Fly from

Portland

Fly to

Belfast Intl

Route

Depart

Return

Price

PortlandBelfast

PDX - BFS

PDXBFS

Portland

Fri 15/5

07:23-21:50

3 stops30h 27m

£414

Flights are sorted by cheapest return flights first.

Deals found on 11/12

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.
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

Find useful and relevant information for your journey from Portland to Belfast Intl. 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 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.

See more FAQs

Travelling to a place near Belfast Intl Airport?

Book flights to Belfast Intl Airport if you plan to visit one of these locations
Armagh
Newry
Ballymena
Cookstown
Dungannon

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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.
Portland to Belfast City flights

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When you search for this flight from Portland to Belfast Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Portland to Belfast Intl for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Need flexible booking options for your flight to Belfast Intl from Portland? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes! Start tracking prices for Portland to Belfast Intl flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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