The cheapest month to fly from Belfast to Lisbon is November, with fares from €71. The most expensive period is August, when prices can reach €142+ — a difference of €71 per ticket. Booking on a Tuesday and travelling off-peak can save you significantly on the 1,780 km BFS–LIS sector.
Estimated seasonal guide, not live fare data: we do not yet have enough observed fares on this route to show real monthly prices. Use the live fares above for actual pricing.
| Month | From price | vs cheapest | Verdict |
|---|---|---|---|
| January | €75 | +€4 | Best value |
| February | €80 | +€9 | Best value |
| March | €89 | +€18 | Good value |
| April | €102 | +€31 | Average |
| May | €97 | +€26 | Average |
| June | €115 | +€44 | Average |
| July | €137 | +€66 | Expensive |
| August | €142 | +€71 | Expensive |
| September | €93 | +€22 | Average |
| October | €84 | +€13 | Good value |
| November | €71 | Cheapest | Best value |
| December | €111 | +€40 | Average |
On the Belfast–Lisbon route, Tuesdays are typically the cheapest day to fly, while Fridays are most expensive. Mid-week departures (Tuesday, Wednesday) save an average of 15–25% compared to weekend travel.
Top-rated tours and experiences in Lisbon, ranked by traveller rating. Prices are per person and change with date and group size.
Nightly rates in Lisbon for a sample two-night stay for two adults from 29 Sep 2026, cheapest first. Rates move with your dates — check availability for a live quote.
