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Cheapest month to fly
Amsterdam (AMS) → Lisbon (LIS)
✓ September 2026 · from €83
Prices by month
Cheapest days
- 18 Sep 2026 €83
- 18 Aug 2026 €84
- 21 Sep 2026 €84
- 23 Aug 2026 €85
- 04 Sep 2026 €85
- 22 Sep 2026 €88
- 24 Nov 2026 €88
- 15 Aug 2026 €89
- 21 Aug 2026 €90
- 22 Aug 2026 €90
- 11 Nov 2026 €90
- 02 Jan 2027 €92
FAQ
How do you calculate the cheapest month?
We aggregate verified partner fares (Travelpayouts/Aviasales) by date and show the month with the lowest observed price.
Is the price guaranteed?
No — fares change. Use live search and alerts to confirm before booking.
Can I change the route?
Yes — pick from/to in the form, or open Cheap Month from any route page.
🔔 Price alert
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