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Cheap flights from Portland to Dublin from £306

PDX — DUB
17 Oct — 24 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 1/1205:00 -
2 stops19h 10m
Tue 15/1209:00 -
2 stops35h 15m
Deal found 17/9£428
Sun 20/923:02 -
1 stop26h 43m
Fri 2/1009:50 -
1 stop31h 41m
Deal found 13/9£432
Tue 22/923:09 -
1 stop28h 01m
Wed 30/909:50 -
1 stop31h 41m
Deal found 15/9£433
Sun 15/1117:45 -
1 stop12h 30m
Thu 3/1220:40 -
1 stop27h 10m
Deal found 15/9£434
Sun 1/1117:45 -
1 stop12h 30m
Wed 11/1110:30 -
1 stop13h 20m
Deal found 14/9£434
Wed 11/1117:45 -
1 stop12h 20m
Tue 17/1109:45 -
2 stops22h 16m
Deal found 17/9£437
Wed 14/1008:25 -
1 stop18h 15m
Wed 21/1009:50 -
1 stop17h 21m
Deal found 17/9£440
Sun 15/1117:45 -
1 stop12h 30m
Tue 1/1220:40 -
1 stop27h 10m
Deal found 15/9£442
Tue 27/1007:30 -
1 stop16h 40m
Wed 11/1109:00 -
1 stop14h 50m
Deal found 16/9£443
Tue 3/1107:00 -
1 stop17h 10m
Tue 17/1110:40 -
1 stop16h 32m
Deal found 16/9£445
Tue 3/1107:00 -
1 stop16h 10m
Tue 17/1109:45 -
2 stops22h 16m
Deal found 16/9£446

Find flight deals from Portland to Dublin

Round-trip from

£368

One-way from

£306

Popular in

December

Cheapest in

February

Average price

£635
Icelandair
  • Icelandair
  • 5/2-9/2
  • 2 total stops
  • 25h 00m total
  • Portland to Dublin
Search Deals
United Airlines
  • United Airlines
  • 4/1-31/12
  • 3 total stops
  • 28h 14m 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

Mon 4/1

19:16-07:30

3 stops28h 14m

Dublin

Wed 31/12

00:00-15:00

Nonstop0h 00m

£306

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

£354

PortlandDublin

PDX Portland - DUB Dublin

PDXDUB

Portland

Fri 5/2

14:45-10:15

1 stop11h 30m

Dublin

Tue 9/2

11:30-17:00

1 stop13h 30m

£368

PortlandDublin

PDX Portland - DUB Dublin

PDXDUB

Portland

Tue 27/10

07:30-07:10

1 stop16h 40m

Dublin

Wed 11/11

09:00-15:50

1 stop14h 50m

£443

PortlandDublin

PDX Portland - DUB Dublin

PDXDUB

Portland

Tue 27/10

08:30-07:30

2 stops16h 00m

Dublin

Wed 11/11

09:30-21:02

2 stops19h 32m

£448

PortlandDublin

PDX Portland - DUB Dublin

PDXDUB

Portland

Sat 14/11

09:00-08:10

2 stops39h 10m

Dublin

Thu 3/12

10:40-18:43

1 stop16h 03m

£455

PortlandDublin

PDX Portland - DUB Dublin

PDXDUB

Portland

Wed 14/10

06:50-08:45

1 stop17h 55m

Dublin

Tue 20/10

10:00-20:02

1 stop18h 02m

£456

PortlandDublin

PDX Portland - DUB Dublin

PDXDUB

Portland

Wed 28/10

09:00-10:20

2 stops18h 20m

Dublin

Sat 7/11

09:00-15:23

2 stops38h 23m

£470

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

£475

PortlandDublin

PDX Portland - DUB Dublin

PDXDUB

Portland

Sun 3/1

05:15-14:25

2 stops25h 10m

Dublin

Wed 13/1

05:45-19:03

2 stops21h 18m

£478

Flights are sorted by cheapest return flights first.

Deals found on 17/9

Showing 1-10 of 13 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 £362). Flying from Portland to Dublin in December is currently the most expensive (average of £707). 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 below average for this route at the moment.

Portland to Dublin flights typically cost between £504 and £741 in February.
The cheapest return price found within the last 5 days was £368 on Icelandair (5 Feb–9 Feb).

Related info for your journey

  • How long is the flight from Portland to Dublin?

    Departing from Portland to Dublin will take you 11h 30m. 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 £362). Flying from Portland to Dublin in December is currently the most expensive (average of £707). 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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