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Cheap flights from Portland to Dublin from £255

PDX — DUB
3 Oct — 10 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portland to Dublin

Enter your travel dates to find the best prices.

Cheapest flights from Portland to Dublin

Tue 3/1107:00 -
1 stop17h 45m
Tue 17/1113:25 -
1 stop30h 15m
Deal found 3/9£543
Mon 26/1007:00 -
1 stop18h 45m
Wed 11/1105:45 -
2 stops18h 44m
Deal found 3/9£544
Mon 26/1010:47 -
2 stops16h 08m
Wed 11/1113:35 -
2 stops17h 34m
Deal found 3/9£546
Tue 27/1011:52 -
2 stops19h 38m
Wed 11/1105:45 -
2 stops22h 19m
Deal found 1/9£553
Tue 6/1010:10 -
1 stop13h 35m
Thu 29/1008:00 -
2 stops35h 22m
Deal found 3/9£558
Tue 20/1012:45 -
2 stops37h 00m
Fri 30/1008:00 -
2 stops32h 26m
Deal found 3/9£567
Wed 28/1008:30 -
1 stop18h 50m
Sat 7/1109:00 -
2 stops34h 47m
Deal found 2/9£570
Sun 18/1006:50 -
1 stop17h 55m
Wed 28/1005:45 -
1 stop13h 55m
Deal found 3/9£572

Find flight deals from Portland to Dublin

Round-trip from

£476

One-way from

£255

Popular in

December

Cheapest in

February

Average price

£611
Icelandair
  • Icelandair
  • 29/1-2/2
  • 2 total stops
  • 25h 00m total
  • Portland to Dublin
Search Deals
British Airways
  • British Airways
  • 27/12-31/12
  • 1 total stop
  • 12h 30m total
  • Portland to Dublin
Search Deals
High demand for flights, 7% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandDublin

PDX Portland - DUB Dublin

PDXDUB

Portland

Fri 1/1

17:45-14:15

1 stop12h 30m

Dublin

Wed 31/12

00:00-15:00

Nonstop0h 00m

£292
Fastest return journey

PortlandDublin

PDX Portland - DUB Dublin

PDXDUB

Portland

Fri 25/12

11:42-07:55

1 stop12h 13m

Dublin

Wed 31/12

00:00-15:00

Nonstop0h 00m

£301

PortlandDublin

PDX Portland - DUB Dublin

PDXDUB

Portland

Thu 31/12

19:16-07:30

3 stops28h 14m

Dublin

Wed 31/12

00:00-15:00

Nonstop0h 00m

£301

PortlandDublin

PDX Portland - DUB Dublin

PDXDUB

Portland

Sat 10/10

23:30-07:30

2 stops24h 00m

Dublin

Wed 31/12

00:00-15:00

Nonstop0h 00m

£343

PortlandDublin

PDX Portland - DUB Dublin

PDXDUB

Portland

Sat 10/10

23:00-08:45

1 stop25h 45m

Dublin

Wed 31/12

00:00-15:00

Nonstop0h 00m

£351

PortlandDublin

PDX Portland - DUB Dublin

PDXDUB

Portland

Tue 22/12

13:50-07:55

1 stop34h 05m

Dublin

Wed 31/12

00:00-15:00

Nonstop0h 00m

£357

PortlandDublin

PDX Portland - DUB Dublin

PDXDUB

Portland

Thu 17/12

06:00-09:00

2 stops19h 00m

Dublin

Wed 31/12

00:00-15:00

Nonstop0h 00m

£425

PortlandDublin

PDX Portland - DUB Dublin

PDXDUB

Portland

Tue 27/10

11:52-14:30

2 stops19h 38m

Dublin

Wed 11/11

05:45-20:04

2 stops22h 19m

£553

PortlandDublin

PDX Portland - DUB Dublin

PDXDUB

Portland

Sun 7/2

17:45-14:55

1 stop13h 10m

Dublin

Sat 27/2

16:10-15:50

1 stop31h 40m

£583

PortlandDublin

PDX Portland - DUB Dublin

PDXDUB

Portland

Sat 17/10

23:00-08:45

1 stop25h 45m

Dublin

Tue 27/10

13:25-10:42

2 stops28h 17m

£583

Flights are sorted by cheapest return flights first.

Deals found on 1/9

Showing 1-10 of 17 resultsSorted by cheapest first
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Best time to book a flight from Portland to Dublin

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

Cheapflights Insights

Everything you need to know about your flight from Portland to Dublin

How far ahead should I book a flight from Portland to Dublin?

Booking 70 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland to Dublin. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Portland to Dublin?

Currently, February is the cheapest month in which you can book a flight from Portland to Dublin (average of £359). Flying from Portland to Dublin in December is currently the most expensive (average of £705). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Portland to Dublin?

Airfare is typical for this route at the moment.

Portland to Dublin flights typically cost between £471 and £723 in January.
The cheapest return price found within the last 5 days was £476 on Icelandair (29 Jan–2 Feb).

Related info for your journey

  • How long is the flight from Portland to Dublin?

    Departing from Portland to Dublin will take you 12h 20m. The distance from Portland to Dublin is about 4635 mi. Both multi-stop and direct flights can be found to your destination and back.

  • Can I find deals for flights from Portland to Dublin that include hotel bookings?

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

  • How can I find direct flights from Portland to Dublin?

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

  • Can I find deals for business class flights from Portland to Dublin?

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

  • What is the cheapest month to book a flight from Portland to Dublin?

    Currently, February is the cheapest month in which you can book a flight from Portland to Dublin (average of £359). Flying from Portland to Dublin in December is currently the most expensive (average of £705). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Dublin?

Book flights to Dublin if you plan to visit one of these locations
Arklow
Cavan
Swords
Portmarnock
Athlone
Dundalk
Bray
Wicklow
Malahide
Maynooth
Drogheda
Kildare

Browse thousands of different options on Cheapflights for your next trip

Fly with Cheapflights

How does Cheapflights help users find flights from Portland to Dublin?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Portland to Dublin. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

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 Dublin from Portland.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Portland to Dublin flexibly with Cheapflights today.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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