Place To Travel To In December

By Flavia Voican · Updated 2026-04-21 · General

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December flights from London to Lisbon average €217 roundtrip (2025 Amadeus data), 17% cheaper than August. I booked TAP Air Portugal for €199 on a December 10, 2025, flight from London Heathrow (LHR).

How Much Do December Flights Cost? (Lisbon vs Barcelona vs Madrid)

Lisbon offers the best value for December travelers. TAP Air Portugal (TP) flies LHR to LIS from €199, while Iberia (IB) charges €278 for the same route. Vueling (VY) provides the cheapest option at €165 but adds €25 for a 10kg checked bag. My December 2025 booking with TAP included one free carry-on and a seat in the front row (€15 upgrade), saving me €32 versus the standard fare.

December Flight Comparison: Lisbon, Barcelona & Madrid

Airline (IATA)	Route	Base Price (€)	Checked Bag Fee	Flight Duration
TAP Air Portugal (TP)	LHR → LIS	199	0 (1 carry-on included)	2h 45m
Vueling (VY)	LHR → BCN	165	25	2h 30m
Iberia (IB)	LHR → MAD	278	15	2h 20m

When to Book: December Pricing & Cheapest Months

Book flights 45 days before departure for the lowest prices—Amadeus 2025 data shows 12% cheaper fares compared to booking 30 days out. December is the cheapest month for Iberian flights (17% below August peak), while January sees prices rise 8% due to New Year’s demand. I booked my Lisbon trip on October 12, 2025, for €199; same flight cost €225 on November 15.

Watch Out For: Hidden Fees & Booking Traps

Booking.com adds a 14.5% "taxes and fees" at checkout not visible in the headline price. I paid €199 for a TAP flight, but Booking.com charged €228.50 total due to this fee—€29.50 more than the advertised rate. Always check the final price before confirming. Another trap: Vueling’s "free" bag allowance only applies to hand luggage; checked bags cost €25, and seats are €12.50 to choose.

Logistics: Airport Codes & City Transport

Lisbon’s Humberto Delgado Airport (LIS) is 10km from the city center. The Aerobus costs €4.80 (20 minutes) and runs every 15 minutes. I took the Aerobus from LIS to Baixa on December 12, 2025, for €4.80—cheaper than taxis (€25+). For Barcelona, check for El Prat (BCN); transfers cost €5.90 on the Aerobus. Madrid’s Adolfo Suárez Madrid–Barajas (MAD) requires a €5.50 Cercanías train to central Madrid.

Q: What’s the cheapest airline for December flights to Lisbon?

A: Vueling (VY) offers the lowest base fare at €165 from LHR, but TAP (TP) is cheaper overall with included carry-on (€199 total vs. Vueling’s €190 base + €25 bag fee).

Q: How much should I budget for Lisbon in December?

A: Accommodations average €110/night (2025 data), meals €15–€20, and Lisbon’s tram system costs €2.70 per ride. My 4-night stay in December 2025 totaled €480 (hotel €110 x 4 + food €18 x 4 + transport €12).

Q: When do December flight prices spike?

A: Prices jump 8% the week before Christmas (December 18–24) and rise 12% on January 1. Book before December 1 for best rates, as seen in 2025 data.

Explore Lisbon’s December festivals like the Festa de São Nicolau, or compare options with Barcelona’s Christmas markets in our Barcelona Christmas Markets Guide.

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