How do I get email alerts when Lisbon to London flights drop in price?

Create a free FlexTrip Alerts tracker for Lisbon Humberto Delgado Airport (LIS) to London (All Airports) (LON). Choose your flexible departure window, stay length, and maximum price — we email you when a round trip fits.

Does FlexTrip Alerts book flights from Lisbon to London?

No — we do not sell tickets. FlexTrip Alerts watches prices and emails you when a fare matches your plan. You book on the airline or travel site you prefer when you receive an alert.

Can I set flexible travel dates for Lisbon to London alerts?

Yes. Pick a departure window (not one fixed day) and how many nights you can stay. We match round trips that fit your window, stay length, and max price — then email you when one qualifies.

How often does FlexTrip Alerts check Lisbon to London fares?

We scan aggregated fares on a schedule — about four times per day (every ~6 hours, UTC). You can also trigger an on-demand check from your dashboard, with a short cooldown between manual refreshes.

What is the cheapest month to fly from Lisbon to London?

Based on recent fare samples on this page, September 2026 is currently the cheapest month to fly from Lisbon to London, with round trips from about EUR 75. Prices change — set an alert to catch the next drop.

Flight price alerts: Lisbon → London

Sample round trips on this route start around EUR 75; September 2026 is often the cheapest month in our next-3-month window. FlexTrip Alerts is a free email service — set flexible travel dates and a max price, and we notify you when a round trip fits. We check fares about four times per day; we do not sell tickets.

Set a free tracker with flexible dates and your max price. We email you only when a round trip fits.

Sample fares from EUR 75. Cheapest month in our next-3-month sample: September 2026.

Set an alert and we email you when a round trip drops under your limit.

Set a price alert

Round trips on this route

Cheapest-seen sample fares (next 3 months) — confirm the final price on the booking site when you click through.

Last updated ….

Round trip · 7 nights
Wed 23 Sept · 20:20
Return Wed 30 Sept · 12:50
EUR 75
See deal
Round trip · 2 nights
Fri 16 Oct · 21:40
Return Sun 18 Oct · 06:45
EUR 86
See deal
Round trip · 2 nights
Wed 21 Oct · 05:55
Return Fri 23 Oct · 15:45
EUR 90
See deal
Round trip · 7 nights
Thu 24 Sept · 15:45
Return Thu 01 Oct · 17:20
EUR 102
See deal
Round trip · 2 nights
Sun 18 Oct · 07:15
Return Tue 20 Oct · 20:10
EUR 103
See deal
Round trip · 2 nights
Fri 02 Oct · 21:50
Return Sun 04 Oct · 17:10
EUR 114
See deal
Round trip · 7 nights
Mon 19 Oct · 21:30
Return Mon 26 Oct · 20:20
EUR 116
See deal
Round trip · 3 nights
Thu 03 Sept · 21:15
Return Sun 06 Sept · 20:40
EUR 137
See deal
Round trip · 9 nights
Mon 21 Sept · 21:20
Return Wed 30 Sept · 18:10
EUR 137
See deal
Round trip · 2 nights
Mon 21 Sept · 23:00
Return Wed 23 Sept · 15:30
EUR 137
See deal
Round trip · 6 nights
Sat 12 Sept · 06:30
Return Fri 18 Sept · 15:45
EUR 139
See deal
Round trip · 6 nights
Sun 11 Oct · 22:25
Return Sat 17 Oct · 18:30
EUR 145
See deal
Round trip · 5 nights
Thu 20 Aug · 10:10
Return Tue 25 Aug · 07:00
EUR 173
See deal
Round trip · 3 nights
Mon 07 Sept · 22:00
Return Thu 10 Sept · 06:05
EUR 189
See deal
Round trip · 2 nights
Sun 06 Sept · 22:10
Return Tue 08 Sept · 07:00
EUR 196
See deal

Depart	Return	Stay	Price	Book
Wed 23 Sept · 20:20	Wed 30 Sept · 12:50	7 nights	EUR 75	See deal
Fri 16 Oct · 21:40	Sun 18 Oct · 06:45	2 nights	EUR 86	See deal
Wed 21 Oct · 05:55	Fri 23 Oct · 15:45	2 nights	EUR 90	See deal
Thu 24 Sept · 15:45	Thu 01 Oct · 17:20	7 nights	EUR 102	See deal
Sun 18 Oct · 07:15	Tue 20 Oct · 20:10	2 nights	EUR 103	See deal
Fri 02 Oct · 21:50	Sun 04 Oct · 17:10	2 nights	EUR 114	See deal
Mon 19 Oct · 21:30	Mon 26 Oct · 20:20	7 nights	EUR 116	See deal
Thu 03 Sept · 21:15	Sun 06 Sept · 20:40	3 nights	EUR 137	See deal
Mon 21 Sept · 21:20	Wed 30 Sept · 18:10	9 nights	EUR 137	See deal
Mon 21 Sept · 23:00	Wed 23 Sept · 15:30	2 nights	EUR 137	See deal
Sat 12 Sept · 06:30	Fri 18 Sept · 15:45	6 nights	EUR 139	See deal
Sun 11 Oct · 22:25	Sat 17 Oct · 18:30	6 nights	EUR 145	See deal
Thu 20 Aug · 10:10	Tue 25 Aug · 07:00	5 nights	EUR 173	See deal
Mon 07 Sept · 22:00	Thu 10 Sept · 06:05	3 nights	EUR 189	See deal
Sun 06 Sept · 22:10	Tue 08 Sept · 07:00	2 nights	EUR 196	See deal

Frequently asked questions

How do I get email alerts when Lisbon to London flights drop in price?: Create a free FlexTrip Alerts tracker for Lisbon Humberto Delgado Airport (LIS) to London (All Airports) (LON). Choose your flexible departure window, stay length, and maximum price — we email you when a round trip fits.
Does FlexTrip Alerts book flights from Lisbon to London?: No — we do not sell tickets. FlexTrip Alerts watches prices and emails you when a fare matches your plan. You book on the airline or travel site you prefer when you receive an alert.
Can I set flexible travel dates for Lisbon to London alerts?: Yes. Pick a departure window (not one fixed day) and how many nights you can stay. We match round trips that fit your window, stay length, and max price — then email you when one qualifies.
How often does FlexTrip Alerts check Lisbon to London fares?: We scan aggregated fares on a schedule — about four times per day (every ~6 hours, UTC). You can also trigger an on-demand check from your dashboard, with a short cooldown between manual refreshes.
What is the cheapest month to fly from Lisbon to London?: Based on recent fare samples on this page, September 2026 is currently the cheapest month to fly from Lisbon to London, with round trips from about EUR 75. Prices change — set an alert to catch the next drop.

More routes from Lisbon

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Lisbon (LIS) → Paris (PAR)Lisbon (LIS) → Madrid (MAD)Lisbon (LIS) → Rome (FCO)Lisbon (LIS) → Berlin (BER)Lisbon (LIS) → New York (JFK)Lisbon (LIS) → Boston (BOS)

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