Sofia to Istanbul flights
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- Lowest observed
- €46, departing 14 Dec 2026 (Last checked: 11 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 112Check live prices for this route
- Airlines seen
- Turkish Airlines, Aegean Airlines, Air Serbia, Buzz, LOT Polish Airlines, Lufthansa +3 more
- Reported fastest flight
- 1h 15m
- Non-stop
- Yes
Your next trip, last seen at €46
Lowest observedWhen to fly
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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
About this route
Explore the fares we observed from Sofia to Istanbul. Prices move often, so pick your dates to see the latest options.
- Route distance
- 505 km
- Reported fastest flight
- 1h 15m
- Airlines seen
- Turkish Airlines, Aegean Airlines, Air Serbia, Buzz, LOT Polish Airlines, Lufthansa +3 more
- Alternative airports
- SAW
Route-level information; individual journeys vary.
Published schedules report non-stop service with Turkish Airlines. Check current timetables.
A clearer picture of your fare
If the observed fare for this date drops, we will email you. At most one message a day.
Non-stop airlines seen on this route
| Airline | Non-stop days / priced days | Fastest non-stop |
|---|---|---|
| Pegasus Airlines | 27 / 112 |
Departure days with a non-stop fare checked in the last 14 days. A carrier listed here had a non-stop fare on at least 3 days; schedules may differ.
Airport to city: straight-line distance
- Sofia Airport (SOF) → Sofia, city gazetteer reference point (42.6977, 23.3219): ≈ 7 km.
- Sabiha Gökçen Airport (SAW) → Istanbul, city gazetteer reference point (41.0082, 28.9784): ≈ 30 km.
- Istanbul Airport (IST) → Istanbul, city gazetteer reference point (41.0082, 28.9784): ≈ 35 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest fare by departure month
Cheapest month from Sofia to Istanbul: December 2026, from €46 (checked 11 Oct 2026).
| Month | Lowest fare | Priced days |
|---|---|---|
| October 2026 | €54 | 20 |
| November 2026 | €49 | 30 |
| December 2026 | €46 | 30 |
| January 2027 | €50 | 22 |
| February 2027 | €52 | 10 |
Lowest fare by day of the week
Cheapest day of the week from Sofia to Istanbul: Monday, from €46 (checked 11 Oct 2026).
| Day | Lowest fare | Priced days |
|---|---|---|
| Monday | €46 | 17 |
| Tuesday | €49 | 17 |
| Wednesday | €50 | 17 |
| Thursday | €50 | 15 |
| Friday | €49 | 16 |
| Saturday | €49 | 15 |
| Sunday | €48 | 15 |
One-way fares checked in the last 14 days. Each figure is the lowest priced departure day we saw, not a guaranteed fare.
Frequently asked
How much is a flight from Sofia to Istanbul?
The lowest fare we have observed is €46, found on 11 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Sofia to Istanbul?
Cheapest month from Sofia to Istanbul: December 2026, from €46 (checked 11 Oct 2026).
Are there direct flights from Sofia to Istanbul?
Yes. We have seen non-stop flights on this route, flown by Turkish Airlines.
Which airlines fly from Sofia to Istanbul?
These are the carriers we have seen on the route: Turkish Airlines, Aegean Airlines, Air Serbia, Buzz, LOT Polish Airlines, Lufthansa +3 more.
How long does the flight from Sofia to Istanbul take?
The average journey time across the 33 fares we observed is 1h 29m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Sofia to Istanbul fares were non-stop?
112 of the 125 fares we observed were non-stop; the rest included at least one stop. That describes our observations, not every flight that operates.
Which airlines had non-stop offers on at least 3 departure dates from Sofia to Istanbul?
For Sofia to Istanbul, examples of observed one-way non-stop offers checked within the last 14 days: Pegasus Airlines (27). Each number counts distinct departure dates, not weekly flights; check current availability in search.
Which day of the week is cheapest from Sofia to Istanbul?
Cheapest day of the week from Sofia to Istanbul: Monday, from €46 (checked 11 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide
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Recently observed fares. Prices may change.
Last checked: 11 Oct 2026