Flight price alerts: Lisbon → Boston
Sample round trips on this route start around EUR 505; October 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 505. Cheapest month in our next-3-month sample: October 2026.
Set an alert and we email you when a round trip drops under your limit.
Set a price alertRound 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 .
- See deal
- Round trip · 4 nights
- Thu 29 Oct · 06:30
- Return Mon 02 Nov · 19:15
EUR 505
- See deal
- Round trip · 7 nights
- Thu 01 Oct · 10:25
- Return Thu 08 Oct · 20:05
EUR 834
- See deal
- Round trip · 5 nights
- Sun 04 Oct · 14:30
- Return Fri 09 Oct · 20:05
EUR 952
| Depart | Return | Stay | Price | Book |
|---|---|---|---|---|
| Thu 29 Oct · 06:30 | Mon 02 Nov · 19:15 | 4 nights | EUR 505 | See deal |
| Thu 01 Oct · 10:25 | Thu 08 Oct · 20:05 | 7 nights | EUR 834 | See deal |
| Sun 04 Oct · 14:30 | Fri 09 Oct · 20:05 | 5 nights | EUR 952 | See deal |
Frequently asked questions
- How do I get email alerts when Lisbon to Boston flights drop in price?
- Create a free FlexTrip Alerts tracker for Lisbon Humberto Delgado Airport (LIS) to Boston Logan International Airport (BOS). 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 Boston?
- 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 Boston 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 Boston 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 Boston?
- Based on recent fare samples on this page, October 2026 is currently the cheapest month to fly from Lisbon to Boston, with round trips from about EUR 505. Prices change — set an alert to catch the next drop.
More routes from Lisbon
View all 8 routes from LisbonSet alerts for other destinations from Lisbon Humberto Delgado Airport (LIS).
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See all 6 departure cities with price alerts into Boston Logan International Airport (BOS).
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