Porto to Helsinki OPO → HEL
Porto Airport (OPO) → Helsinki-Vantaa Airport (HEL)
The cheapest return found recently is $259 with Ryanair, 17 Dec – 5 Jan 2027, found today.
Return
The cheapest return fare on each of 3 departure dates is usually $240 to $275.
Cheapest return found recently
$259
17 Dec – 5 Jan 2027 · Ryanair
Porto Airport (OPO) → Helsinki-Vantaa Airport (HEL)
Leaves 8:30 a.m. · Return leaves 9:30 p.m. · 28 h 25 min of travel, both ways together
out 1 stop, back 1 stop
found today
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$259 17 Dec – 5 Jan 2027found todaySee prices for these dates
$221 14 Jan 2027 – 19 Jan 2027found 6 days agoSee prices for these dates
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $219 to $249.
At $259, the cheapest return found recently is above that range.
25 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 return price?
Compared with the cheapest return fare on each of 3 departure dates from 17 Dec to 14 Jan 2027, 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 19-night return fares leaving within 3 days of 17 Dec to compare.
Every date we hold
3 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 17 Dec – 5 Jan 2027 | $259 | Ryanair | Porto Airport (OPO) → Helsinki-Vantaa Airport (HEL) | out 1 stop, back 1 stop | found today | See prices for these dates |
| 22 Dec – 28 Dec | $290 | easyJet | Porto Airport (OPO) → Helsinki-Vantaa Airport (HEL) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 14 Jan 2027 – 19 Jan 2027 | $221 | Ryanair | Porto Airport (OPO) → Helsinki-Vantaa Airport (HEL) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
Which month looks cheapest?
January 2027 is the cheapest month — from $221.
Airlines on the cheapest dates: Ryanair, easyJet.
Premium cabin fares from Porto to Helsinki
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 17 Dec – 5 Jan 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Porto to Helsinki?
Return
Fares 90 to 179 days before departure were typically 10% lower than 14 to 29 days before departure.
From the cheapest return each day between 24 Sept and 18 Oct (25 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 |
|---|---|---|---|---|
| 14–29 days | $253 | $253 | +12% | 9 |
| 30–59 days | $276 | $276 | +22% | 13 |
| 60–89 days | $260 | $221 | +15% | 25 |
| 90–179 days | $227 | $219 | Cheapest seen | 23 |
| 180+ days | $306 | $306 | +35% | 14 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Porto → Tallinn
82 km from Helsinki
$204
$55 less than flying to Helsinki
20 Jan 2027 – 30 Jan 2027 · OPO → TLL · out 2 stops, back 2 stops
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 17 Dec – 5 Jan 2027. A live search on this page shows what those dates cost now, for one adult in economy.
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