European Flight Seasonality 2026 — 8 findings from 656 routes

Name: European Flight Seasonality 2026
Creator: Flavia Voican
License: https://creativecommons.org/licenses/by/4.0/

Written by Flavia Voican, Travel Researcher at 360 Business Tour

Independent European travel research. Verified data, updated for 2026

Original proprietary dataset · CC BY 4.0 · Flavia Voican · April 2026. Republish freely with a link back. Full raw data: /api/aviator_seasonality.json

#1 The cheapest month to fly from Porto to Madeira is November — not what you'd guess

Porto→Madeira: November beats March by 40% (€52 vs €151)

Across 656 European routes we tracked in 2026, 2 warm-destination routes have their cheapest-month in winter — the opposite of what booking engines suggest.

#2 Biggest seasonality gap: London → Gran Canaria, 70%

Book London→Gran Canaria in April (€50) not December (€328) — 70% gap

Among 656 European routes, the London→Gran Canaria leg shows the largest cheap/peak gap at 70%. Identical seat, €278 price difference.

#3 May is the cheapest month for 173 of 466 European routes

May wins on 173/466 tracked EU routes (37%). If you can travel any month, travel in May.

Distribution of cheapest-month across 656 European routes: May:173, June:121, April:111, July:15, October:13

#4 252 of 466 routes follow a 'flat' pattern

'flat' is the most common pricing pattern across 466 EU routes (252 routes, 54%).

Pattern distribution: flat:252, spring_value:164, winter_peak:29, shoulder_autumn:13, summer_peak:8

#5 Istanbul has the most tracked cheap-month routes: 51

Istanbul travelers have 51 tracked European routes to pick from in our seasonality data — the most choice in Europe.

Other top origins: Istanbul:51, London:47, Amsterdam:46, Krakow:39, Riga:37

#6 72 of 121 warm-destination routes (59%) are cheapest in April, May, September or October

Shoulder-season math: 72/121 (59%) warm-destination EU routes hit their cheapest price in April/May/Sept/Oct. The July-August premium is real and consistent.

Examples: Amsterdam→Mykonos (October, €244); Athens→Mykonos (April, €79); Athens→Santorini (April, €45); Barcelona→Athens (April, €95); Berlin→Barcelona (April, €74)

#7 212 European routes dip below €100 in their cheapest month

Under-€100 EU flights exist: 212 of 466 tracked EU routes hit sub-€100 in their cheapest month. Cheapest: Milan→Tirana at €25 in April.

Top 10 sub-€100 routes (cheap month, price): Milan→Tirana €25 April; Milan→Budapest €29 May; Milan→Warsaw €29 April; Krakow→Vienna €30 April; Milan→Vilnius €31 June; Krakow→Copenhagen €32 April; London→Edinburgh €32 May; London→Barcelona €33 May; London→Milan €33 May; Barcelona→London €34 May

#8 August is the peak month for 133 of 466 European routes (28%)

August prices win 133/466 tracked EU routes. Travel-magazine 'shoulder season' advice holds: every month except August is cheaper somewhere.

Peak-month distribution shows August dominant at 133 routes; actual shoulder months (April/May/September/October) are cheapest for warm destinations in 307 routes.

Methodology. Scraped monthly-min pricing from Aviasales API for 8,260 origin-destination pairs; 656 had sufficient data points (≥5 months tracked). Cheap/peak months calculated as min/max of monthly medians.

Cite this. Voican, F. (2026). European Flight Seasonality 2026. 360 Business Tour. https://360businesstour.com/travel/data/2026-april/

Contact. Flavia Voican — hello@360businesstour.com for methodology questions or custom pulls.
Raw data. findings JSON · full route-level JSON