Cheap flights from Sofia to Helsinki from $251 SOF → HEL
Sofia Airport (SOF) → Helsinki-Vantaa Airport (HEL)
The cheapest return found recently is $251 with ALPAVIA, 21 Dec – 5 Jan 2027, found 2 days ago.
- Cheapest return found recently
- $251, 21 Dec to 5 Jan 2027
- Usual return price
- $204 to $222
- Cheapest month to fly
- February 2027, return fares from $198 found in the last 7 days
Return
The cheapest return fare on each of 6 departure dates is usually $204 to $222.
Cheapest return found recently
$251
21 Dec – 5 Jan 2027 · ALPAVIA
Sofia Airport (SOF) → Helsinki-Vantaa Airport (HEL)
Leaves 11:20 p.m. · Return leaves 9:30 p.m. · 38 h 30 min of travel, both ways together
out 2 stops, back 1 stop
found 2 days ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$251 21 Dec – 5 Jan 2027found 2 days agoSee prices for these dates
$198 23 Feb 2027 – 28 Feb 2027found 7 days agoSee prices for these dates
What have prices looked like?
Over 46 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $160 to $354.
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 6 departure dates from 21 Dec to 24 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?
We hold no other 15-night return fares leaving within 3 days of 21 Dec to compare.
Every date we hold
11 fares on 6 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 21 Dec – 5 Jan 2027 | $251 | ALPAVIA | Sofia Airport (SOF) → Helsinki-Vantaa Airport (HEL) | out 2 stops, back 1 stop | found 2 days ago | See prices for these dates |
| 20 Feb 2027 – 24 Feb 2027 | $211 | Buzz | Sofia Airport (SOF) → Helsinki-Vantaa Airport (HEL) | out 1 stop, back 2 stops | found 7 days ago | See prices for these dates |
| 21 Feb 2027 – 28 Feb 2027 | $202 | Wizz Air | Sofia Airport (SOF) → Helsinki-Vantaa Airport (HEL) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
| 22 Feb 2027 – 28 Feb 2027 | $220 | Ryanair | Sofia Airport (SOF) → Helsinki-Vantaa Airport (HEL) | out 2 stops, back 1 stop | found 7 days ago | See prices for these dates |
| 23 Feb 2027 – 28 Feb 2027 | $198 | Buzz | Sofia Airport (SOF) → Helsinki-Vantaa Airport (HEL) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
| 24 Feb 2027 – 2 Mar 2027 | $223 | Buzz | Sofia Airport (SOF) → Helsinki-Vantaa Airport (HEL) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
Which month looks cheapest?
February 2027 is the cheapest month — from $198.
Airlines on the cheapest dates: Buzz, ALPAVIA, Wizz Air, Ryanair.
Premium cabin fares from Sofia 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 21 Dec – 5 Jan 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Sofia to Helsinki?
Return
Fares 60 to 89 days before departure were typically 28% lower than 7 to 13 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (46 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 | $328 | $318 | +39% | 12 |
| 14–29 days | $331 | $160 | +40% | 24 |
| 30–59 days | $300 | $161 | +27% | 28 |
| 60–89 days | $236 | $231 | Cheapest seen | 28 |
| 90–179 days | $277 | $198 | +17% | 19 |
| 180+ days | $264 | $264 | +12% | 8 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Sofia → Tallinn
82 km from Helsinki
$274
$23 more than flying to Helsinki
16 Nov – 1 Dec · SOF → TLL · out 1 stop, 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.
One-way
Sofia → Tallinn
82 km from Helsinki
$103
26 Jan 2027 · SOF → TLL · 2 stops
found 2 days ago
Nis → Helsinki
135 km from Sofia
$227
10 May 2027 · INI → HEL · 2 stops
found 6 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 21 Dec – 5 Jan 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 Sofia to Helsinki?
The cheapest return found recently is $251 with ALPAVIA, 21 Dec to 5 Jan 2027, found 2 days ago. The cheapest return we hold, of any age, is $198 with Buzz, 23 Feb 2027 to 28 Feb 2027, found 7 days ago. The cheapest return fare on each of 6 departure dates is usually $204 to $222.
What is the cheapest month to fly from Sofia to Helsinki?
February 2027 is the cheapest month for a return, from $198, 23 Feb 2027 to 28 Feb 2027, found 7 days ago.
How far ahead should I book a flight from Sofia to Helsinki?
In 46 days of prices between 24 Sept and 11 Nov, return fares 60 to 89 days before departure were typically 28% lower than 7 to 13 days before departure.
Which airlines have the cheapest flights from Sofia to Helsinki?
Between 21 Dec and 24 Feb 2027, Buzz has the cheapest return on 3 of the 6 departure dates we hold, ALPAVIA on 1 and Wizz Air 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