Porto to Bilbao OPO → BIO
Porto Airport (OPO) → Bilbao Airport (BIO)
The cheapest return found recently is $68 with Vueling, 24 Dec – 27 Dec, found 4 days ago. The cheapest one-way found recently is $68 with Vueling, 26 Feb 2027, found today.
Return
Not enough comparable prices yet for a usual return price.
Cheapest return found recently
$68
24 Dec – 27 Dec · Vueling
Porto Airport (OPO) → Bilbao Airport (BIO)
Leaves 8:15 p.m. · Return leaves 8:00 p.m. · 2 h 35 min of travel, both ways together
out nonstop, back nonstop
found 4 days ago
Cheapest nonstop return
$68
24 Dec – 27 Dec · Vueling
Porto Airport (OPO) → Bilbao Airport (BIO)
Leaves 8:15 p.m. · Return leaves 8:00 p.m. · 2 h 35 min of travel, both ways together
out nonstop, back nonstop
found 4 days ago
Found recently, and the cheapest we hold
$68 24 Dec – 27 Decfound 4 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $66 to $118.
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?
Not enough comparable prices yet: we hold return fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other 3-night return fares leaving within 3 days of 24 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 | |
|---|---|---|---|---|---|---|
| 24 Dec – 27 Dec | $68 | Vueling | Porto Airport (OPO) → Bilbao Airport (BIO) | out nonstop, back nonstop | found 4 days ago | See prices for these dates |
Airlines on the cheapest dates: Vueling.
One-way
The cheapest one-way fare on each of 4 departure dates is usually $23 to $38.
Cheapest one-way found recently
$68
26 Feb 2027 · Vueling
Porto Airport (OPO) → Bilbao Airport (BIO)
Leaves 9:55 p.m. · 24 h trip
1 stop
found today
Cheapest nonstop one-way
$23
19 Dec · Vueling
Porto Airport (OPO) → Bilbao Airport (BIO)
Leaves 8:05 p.m. · 1 h 15 min trip
nonstop
found 4 days ago
Found recently, and the cheapest we hold
$68 26 Feb 2027found todayOpen this trip
$23 19 Decfound 4 days agoOpen this trip
What have prices looked like?
Over 22 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $23 to $30.
At $68, the cheapest one-way found recently is above that range.
22 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?
Compared with the cheapest one-way fare on each of 4 departure dates from 19 Dec to 28 Feb 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?
Yes. Among one-way fares leaving within 3 days of 26 Feb 2027, 28 Feb 2027 costs $28: $40 less than the cheapest found recently.
Volotea · Porto Airport (OPO) → Bilbao Airport (BIO) · nonstop · found 5 days ago
Every date we hold
4 fares on 4 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 19 Dec | $23 | Vueling | Porto Airport (OPO) → Bilbao Airport (BIO) | nonstop | found 4 days ago | Open this trip |
| 24 Dec | $23 | Vueling | Porto Airport (OPO) → Bilbao Airport (BIO) | nonstop | found 4 days ago | Open this trip |
| 26 Feb 2027 | $68 | Vueling | Porto Airport (OPO) → Bilbao Airport (BIO) | 1 stop | found today | Open this trip |
| 28 Feb 2027 | $28 | Volotea | Porto Airport (OPO) → Bilbao Airport (BIO) | nonstop | found 5 days ago | Open this trip |
Which month looks cheapest?
December 2026 is the cheapest month — from $23.
Airlines on the cheapest dates: Vueling, Volotea.
Premium cabin fares from Porto to Bilbao
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 24 Dec – 27 Dec in another cabin: Premium economy · Business · First
Today's prices for 26 Feb 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Porto to Bilbao?
Return
Fares 7 to 13 days before departure were typically 39% lower than 0 to 6 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 |
|---|---|---|---|---|
| 0–6 days | $131 | $80 | +64% | 14 |
| 7–13 days | $80 | $80 | Cheapest seen | 11 |
| 14–29 days | $102 | $66 | +28% | 19 |
| 60–89 days | $80 | $68 | +0% | 10 |
One-way
The cheapest fares were 30 to 59 days before departure.
From the cheapest one-way each day between 24 Sept and 18 Oct (22 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 |
|---|---|---|---|---|
| 30–59 days | $26 | $23 | Cheapest seen | 13 |
| 60–89 days | $32 | $23 | +23% | 12 |
| 90–179 days | $28 | $27 | +8% | 17 |
| 180+ days | $27 | $25 | +2% | 18 |
Live price for these dates
The cheapest return found recently is for 24 Dec – 27 Dec. 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