Cheap flights from Riga to Porto from $84 RIX → OPO
Riga International Airport (RIX) → Porto Airport (OPO)
The cheapest return found recently is $249 with Ryanair, 18 Mar 2027 – 25 Mar 2027, found 4 days ago. The cheapest one-way found recently is $84 with Norwegian Air Sweden, 22 May 2027, found 4 days ago.
- Cheapest one-way found recently
- $84, found 4 days ago
- Cheapest return found recently
- $249, 18 Mar 2027 to 25 Mar 2027
- Usual return price
- $271 to $307
- Cheapest month to fly
- March 2027, return fares from $249 found in the last 7 days
Return
The cheapest return fare on each of 3 departure dates is usually $271 to $307.
Cheapest return found recently
$249
18 Mar 2027 – 25 Mar 2027 · Ryanair
Riga International Airport (RIX) → Porto Airport (OPO)
Leaves 4:25 p.m. · Return leaves 7:45 p.m. · 35 h 5 min of travel, both ways together
out 1 stop, back 1 stop
found 4 days ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$249 18 Mar 2027 – 25 Mar 2027found 4 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 48 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $158 to $418.
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 7 Dec to 29 Aug 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 7-night return fares leaving within 3 days of 18 Mar 2027 to compare.
Every date we hold
3 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 7 Dec – 7 Dec | $321 | Lufthansa | Riga International Airport (RIX) → Porto Airport (OPO) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 18 Mar 2027 – 25 Mar 2027 | $249 | Ryanair | Riga International Airport (RIX) → Porto Airport (OPO) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 29 Aug 2027 – 3 Sept 2027 | $292 | Norwegian Air Sweden | Riga International Airport (RIX) → Porto Airport (OPO) | out 2 stops, back 1 stop | found 6 days ago | See prices for these dates |
Which month looks cheapest?
March 2027 is the cheapest month — from $249.
Airlines on the cheapest dates: Lufthansa, Ryanair, Norwegian Air Sweden.
One-way
The cheapest one-way fare on each of 7 departure dates is usually $89 to $120.
Cheapest one-way found recently
$84
22 May 2027 · Norwegian Air Sweden
Riga International Airport (RIX) → Porto Airport (OPO)
Leaves 7:50 a.m. · 12 h 40 min trip
1 stop
found 4 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$84 22 May 2027found 4 days agoOpen this trip
$76 13 Novfound 5 days agoOpen this trip
What have prices looked like?
Over 42 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $75 to $211.
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 7 departure dates from 13 Nov to 6 Oct 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?
No. We hold one-way fares on 1 other departure date within 3 days of 22 May 2027, and it is not cheaper.
Every date we hold
8 fares on 7 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 13 Nov | $76 | Ryanair | Riga International Airport (RIX) → Porto Airport (OPO) | stops unknown | found 5 days ago | Open this trip |
| 9 Feb 2027 | $109 | Ryanair | Riga International Airport (RIX) → Porto Airport (OPO) | 1 stop | found 5 days ago | Open this trip |
| 11 Mar 2027 | $93 | Ryanair | Riga International Airport (RIX) → Porto Airport (OPO) | 1 stop | found 4 days ago | Open this trip |
| 8 May 2027 | $106 | Norwegian Air Sweden | Riga International Airport (RIX) → Porto Airport (OPO) | 1 stop | found 6 days ago | Open this trip |
| 22 May 2027 | $84 | Norwegian Air Sweden | Riga International Airport (RIX) → Porto Airport (OPO) | 1 stop | found 4 days ago | Open this trip |
| 24 May 2027 | $130 | Cityjet | Riga International Airport (RIX) → Porto Airport (OPO) | 1 stop | found 4 days ago | Open this trip |
| 6 Oct 2027 | $168 | Ryanair | Riga International Airport (RIX) → Porto Airport (OPO) | 2 stops | found 5 days ago | Open this trip |
Which month looks cheapest?
November 2026 is the cheapest month — from $76.
Airlines on the cheapest dates: Ryanair, Norwegian Air Sweden, Cityjet.
Premium cabin fares from Riga to Porto
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 18 Mar 2027 – 25 Mar 2027 in another cabin: Premium economy · Business · First
Today's prices for 22 May 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Riga to Porto?
Return
Fares 30 to 59 days before departure were typically 26% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (48 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 | $226 | $185 | +35% | 11 |
| 7–13 days | $229 | $165 | +36% | 17 |
| 14–29 days | $229 | $165 | +36% | 16 |
| 30–59 days | $168 | $158 | Cheapest seen | 23 |
| 60–89 days | $298 | $168 | +77% | 17 |
| 90–179 days | $275 | $249 | +64% | 10 |
| 180+ days | $254 | $238 | +51% | 19 |
One-way
Not enough history yet: in 42 days of one-way prices, 24 Sept to 11 Nov, fewer than 3 booking ranges had prices on 7 days or more.
Live price for these dates
The cheapest return found recently is for 18 Mar 2027 – 25 Mar 2027. 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 Riga to Porto?
The cheapest return found recently is $249 with Ryanair, 18 Mar 2027 to 25 Mar 2027, found 4 days ago. The cheapest return fare on each of 3 departure dates is usually $271 to $307.
How much is a one-way flight from Riga to Porto?
The cheapest one-way found recently is $84 with Norwegian Air Sweden, 22 May 2027, found 4 days ago. The cheapest one-way we hold, of any age, is $76 with Ryanair, 13 Nov, found 5 days ago. The cheapest one-way fare on each of 7 departure dates is usually $89 to $120.
What is the cheapest month to fly from Riga to Porto?
March 2027 is the cheapest month for a return, from $249, 18 Mar 2027 to 25 Mar 2027, found 4 days ago. November 2026 is the cheapest month for a one-way, from $76, 13 Nov, found 5 days ago.
How far ahead should I book a flight from Riga to Porto?
In 48 days of prices between 24 Sept and 11 Nov, return fares 30 to 59 days before departure were typically 26% lower than 0 to 6 days before departure.
How long is the flight from Riga to Porto?
The cheapest one-way found recently, with Norwegian Air Sweden on 22 May 2027, takes 12 h 40 min with 1 stop.
Which airlines have the cheapest flights from Riga to Porto?
Between 7 Dec and 29 Aug 2027, Lufthansa has the cheapest return on 1 of the 3 departure dates we hold, Ryanair on 1 and Norwegian Air Sweden on 1. Between 13 Nov and 6 Oct 2027, Ryanair has the cheapest one-way on 4 of the 7 departure dates we hold, Norwegian Air Sweden on 2 and Cityjet 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