Cheap flights from Porto to Dublin from $24 OPO → DUB
Porto Airport (OPO) → Dublin Airport (DUB)
The cheapest return found recently is $88 with Ryanair, 21 Nov – 24 Nov, found 2 days ago. The cheapest one-way found recently is $24 with Ryanair, 18 Dec, found 2 days ago.
- Cheapest one-way found recently
- $24, Ryanair, found 2 days ago
- Cheapest return found recently
- $88, 21 Nov to 24 Nov
- Usual return price
- $88 to $209
- Cheapest month to fly
- December 2026, return fares from $77 found in the last 7 days
- Airlines with nonstop flights
- Ryanair
- Shortest nonstop flight found
- 2 h 25 min
Return
The cheapest return fare on each of 9 departure dates is usually $88 to $209.
Cheapest return found recently
$88
21 Nov – 24 Nov · Ryanair
Porto Airport (OPO) → Dublin Airport (DUB)
Leaves 7:50 p.m. · Return leaves 6:15 a.m. · 4 h 50 min of travel, both ways together
out nonstop, back nonstop
found 2 days ago
Cheapest nonstop return
$88
21 Nov – 24 Nov · Ryanair
Porto Airport (OPO) → Dublin Airport (DUB)
Leaves 7:50 p.m. · Return leaves 6:15 a.m. · 4 h 50 min of travel, both ways together
out nonstop, back nonstop
found 2 days ago
Found recently, and the cheapest we hold
$88 21 Nov – 24 Novfound 2 days agoSee prices for these dates
$77 5 Dec – 12 Decfound 6 days agoSee prices for these dates
What have prices looked like?
Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $47 to $139.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 9 departure dates from 21 Nov to 16 Dec, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 3-night return fares leaving within 3 days of 21 Nov to compare.
Every date we hold
29 fares on 9 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 21 Nov – 24 Nov | $88 | Ryanair | Porto Airport (OPO) → Dublin Airport (DUB) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
| 3 Dec – 13 Dec | $189 | KLM | Porto Airport (OPO) → Dublin Airport (DUB) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 5 Dec – 12 Dec | $77 | Ryanair | Porto Airport (OPO) → Dublin Airport (DUB) | out nonstop, back nonstop | found 6 days ago | See prices for these dates |
| 7 Dec – 12 Dec | $90 | Ryanair | Porto Airport (OPO) → Dublin Airport (DUB) | out nonstop, back nonstop | found 6 days ago | See prices for these dates |
| 10 Dec – 12 Dec | $77 | Ryanair | Porto Airport (OPO) → Dublin Airport (DUB) | out nonstop, back nonstop | found 5 days ago | See prices for these dates |
| 13 Dec – 23 Dec | $206 | Ryanair | Porto Airport (OPO) → Dublin Airport (DUB) | out nonstop, back 2 stops | found 6 days ago | See prices for these dates |
| 14 Dec – 19 Dec | $211 | Ryanair | Porto Airport (OPO) → Dublin Airport (DUB) | out nonstop, back nonstop | found 6 days ago | See prices for these dates |
| 15 Dec – 20 Dec | $209 | Ryanair | Porto Airport (OPO) → Dublin Airport (DUB) | out nonstop, back nonstop | found 6 days ago | See prices for these dates |
| 16 Dec – 23 Dec | $231 | Iberia | Porto Airport (OPO) → Dublin Airport (DUB) | out 1 stop, back 2 stops | found 6 days ago | See prices for these dates |
Which month looks cheapest?
December 2026 is the cheapest month — from $77.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$24
18 Dec · Ryanair
Porto Airport (OPO) → Dublin Airport (DUB)
Leaves 9:45 p.m. · 2 h 25 min trip
nonstop
found 2 days ago
Cheapest nonstop one-way
$24
18 Dec · Ryanair
Porto Airport (OPO) → Dublin Airport (DUB)
Leaves 9:45 p.m. · 2 h 25 min trip
nonstop
found 2 days ago
Found recently, and the cheapest we hold
$24 18 Decfound 2 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 8 days, 4 Nov to 11 Nov, the cheapest one-way we saw each day was $21 to $40.
8 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Not enough comparable prices yet: we hold one-way fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 18 Dec to compare.
Every date we hold
1 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 18 Dec | $24 | Ryanair | Porto Airport (OPO) → Dublin Airport (DUB) | nonstop | found 2 days ago | Open this trip |
Airlines on the cheapest dates: Ryanair.
Premium cabin fares from Porto to Dublin
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 21 Nov – 24 Nov in another cabin: Premium economy · Business · First
Today's prices for 18 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Porto to Dublin?
Return
Fares 14 to 29 days before departure were typically 35% lower than 7 to 13 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 7–13 days | $118 | $83 | +53% | 12 |
| 14–29 days | $77 | $66 | Cheapest seen | 25 |
| 30–59 days | $77 | $47 | +0% | 48 |
| 90–179 days | $183 | $117 | +138% | 39 |
One-way
Not enough history yet: in 8 days of one-way prices, 4 Nov to 11 Nov, fewer than 3 booking ranges had prices on 7 days or more.
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Porto → Belfast
140 km from Dublin
$189
$101 more than flying to Dublin
11 Jan 2027 – 15 Jan 2027 · OPO → BFS · out 1 stop, back 1 stop
found 4 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 21 Nov – 24 Nov. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Porto to Dublin?
The cheapest return found recently is $88 with Ryanair, 21 Nov to 24 Nov, found 2 days ago. The cheapest return we hold, of any age, is $77 with Ryanair, 5 Dec to 12 Dec, found 6 days ago. The cheapest return fare on each of 9 departure dates is usually $88 to $209.
How much is a one-way flight from Porto to Dublin?
The cheapest one-way found recently is $24 with Ryanair, 18 Dec, found 2 days ago.
What is the cheapest month to fly from Porto to Dublin?
December 2026 is the cheapest month for a return, from $77, 5 Dec to 12 Dec, found 6 days ago.
How far ahead should I book a flight from Porto to Dublin?
In 49 days of prices between 24 Sept and 11 Nov, return fares 14 to 29 days before departure were typically 35% lower than 7 to 13 days before departure.
Is there a direct flight from Porto to Dublin?
Yes, the cheapest nonstop return found recently is $88 with Ryanair, 21 Nov to 24 Nov, found 2 days ago. The cheapest nonstop one-way found recently is $24 with Ryanair, 18 Dec, found 2 days ago.
How long is the flight from Porto to Dublin?
The cheapest nonstop one-way found recently, with Ryanair on 18 Dec, takes 2 h 25 min from Porto Airport (OPO) to Dublin Airport (DUB).
Which airlines have the cheapest flights from Porto to Dublin?
Between 21 Nov and 16 Dec, Ryanair has the cheapest return on 7 of the 9 departure dates we hold, KLM on 1 and Iberia on 1.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work