Flights Sofia → Istanbul
As of October 2026, economy flights from Sofia to Istanbul have a typical range EUR 132–2903, median EUR 346. Full range across all 222 offers: EUR 75–6477. We analyzed 222 offers from 8 airlines in a single price check.
Preview snapshot — prices change. Search for live results.
Data collected by LetsFG's multi-source price checks — every airline and the major booking sites checked for this route. How we collect data →
Best offers by airline: Sofia → Istanbul
Based on 222 offers · October 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Sofia → Istanbul
Add-on pricing from the cheapest available offer per airline · October 2026 · EUR
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Pegasus Airlines | — | EUR 45 | — |
| Turkish Airlines | Included | Included | — |
| Air Serbia | Included | EUR 25 | — |
| Wizz Air | EUR 134 | EUR 162 | — |
| Austrian Airlines | EUR 71 | — | — |
| Lufthansa | Included | EUR 35 | — |
Fees are estimates from the prices we checked and may not reflect your specific itinerary, booking class, or payment method. Run a live search for exact pricing.
How much do flights from Sofia to Istanbul cost?
Based on 222 offers · October 2026
Sofia to Istanbul flights ranged from EUR 75 to EUR 6477 across 222 offers analyzed in October 2026. The chart below shows how prices distributed across all 222 offers.
These 222 offers (October 2026) span multiple departure dates and booking windows — your travel dates may fall anywhere in this distribution. Only a live search shows where your specific trip lands.
50% of offers priced between EUR 214 and EUR 564
What hidden fees do Sofia to Istanbul flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Sofia to Istanbul routes. The breakdown below is based on 222 offers analyzed in October 2026.
| Carrier | Avg fee (EUR) | % of base fare |
|---|---|---|
| PC | 52 | 20% |
| TK | 27 | 10% |
| JU | 52 | 17% |
| W6 | 300 | 146% |
| OS | 46 | 3% |
| LH | 45 | 2% |
Wizz Air: base ~EUR -94 + fees EUR 300 = ~EUR 206 total. Turkish Airlines: base ~EUR 290 + fees EUR 27 = ~EUR 317 total.
Wizz Air's EUR 300 ancillary fees narrow the gap with Turkish Airlines's lower-fee model — the EUR 384 base difference shrinks to EUR 111 after fees. Always compare total cost, not just the advertised base fare.
Estimates based on median total minus average ancillary fee. Actual base fares vary by itinerary.Fee levels vary significantly across carriers on this route — some carriers charge 50%+ above the base fare in ancillary fees.
Run your search to see itemized fees for your itineraryWhich airline is cheapest from Sofia to Istanbul?
8 airlines flew Sofia to Istanbul in this dataset. Knowing the airline isn't enough — the typical fare range below shows how far prices swing on each one. Median and range include all fees we recorded.
Even on the cheapest airline (Pegasus Airlines), fares ranged EUR 96–375 in this snapshot. Your exact price depends on your dates and how far ahead you book — run a live search to see your number →
| Airline | Offers | Typical range (EUR) | Median (EUR) | Fees (EUR) |
|---|---|---|---|---|
 Pegasus Airlines | 25 | 96–375 | 175 | 52 (30%) |
 Wizz Air | 3 | 197–215 | 206 | 300 (146%) |
 Sky Express | 7 | 200–747 | 278 | n/a |
 Air Serbia | 23 | 157–486 | 298 | 52 (18%) |
 Turkish Airlines | 72 | 121–479 | 317 | 27 (9%) |
 Air Serbia | 6 | 304–335 | 335 | n/a |
 Austrian | 39 | 232–5494 | 579 | 46 (8%) |
 Lufthansa | 47 | 370–5251 | 581 | 45 (8%) |
Where do the best Sofia → Istanbul prices come from?
We checked direct airlines, travel agencies, and meta-search for this route. On this route the lowest median came from meta-search sources, but the cheapest channel shifts by route and date — which is exactly why a live search across all of them wins.
We compare every airline and the major booking sites but never disclose which — that's our edge. Prices are the ones we observed and aren't official data from any platform. Run a live search and we bring you the cheapest, wherever it is.
Key facts: Sofia to Istanbul flights
- Full-service carriers on Sofia–Istanbul cost 2.1x more than budget airlines (EUR 398 vs EUR 190 median; overall median EUR 346).
- W6 charges 11.0x more in ancillary fees than TK — EUR 300 vs EUR 27 avg per booking.
- The same route priced EUR 424 apart depending on where it was booked — the lowest median was EUR 88. We search every airline and the major booking sites at once so you always see that lowest price.
Frequently asked questions
- How much does a flight from Sofia to Istanbul cost?
- Based on 222 offers analyzed, Sofia to Istanbul flights range from EUR 75 to EUR 6477, with a median price of EUR 346. Search for your specific dates →
- What hidden fees should I expect on Sofia to Istanbul flights?
- On average, ancillary fees (bags, seat selection) add EUR 44 to the base fare on Sofia to Istanbul flights. See itemized fees for your itinerary →
- Which airline is cheapest on Sofia to Istanbul including all fees?
- Pegasus Airlines has the lowest median fare on Sofia to Istanbul at EUR 175 (median across 25 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Sofia–Istanbul flights?
- It depends on your dates — no single site is always cheapest. We search every airline and the major booking sites at once (travel agencies and meta-search included) and surface whichever is lowest; the best median in this snapshot was EUR 88. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Sofia to Istanbul routes?
- Sofia to Istanbul has 8 airlines competing, creating a price range from EUR 75 to EUR 6477 across 222 offers. Prices on this route change with booking timing, advance purchase, and ancillary add-ons. Find where your trip lands in the distribution →
8 airlines compete on this route — we check every one
Find flights for my datesNew route — be among the first to track this itinerary
Building with flight data? Power your app or agent with LetsFG
The same multi-source search behind this page — every airline and the major booking sites, deduplicated and ranked — is available to your app or AI agent. Natural-language or structured queries, live prices, zero price bias.
Try the free sandbox — no card →Free sandbox, instant fake results · email for a key · Bearer-token auth · MCP, Python & JS SDKs · letsfg.co/developers