Lisbon to Boston flights
Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for Lisbon to Boston is €336 (checked on 28 Oct 2026).
Your next trip, last seen at €336
Lowest observedWhen to fly
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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- Lowest observed
- €336, departing 15 Nov 2026 (Last checked: 28 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 15Check live prices for this route
- Airlines seen
- Aer Lingus, Air France, American Airlines, Azores Airlines, British Airways, Finnair, Iberia, KLM, TAP Air Portugal, Turkish Airlines (10)
- Reported fastest flight
- 8h 15m
- Non-stop
- Yes
About this route
Explore the fares we observed from Lisbon to Boston. Prices move often, so pick your dates to see the latest options.
- Route distance
- 5,131 km
- Reported fastest flight
- 8h 15m
- Seen on fares with a connection
- Azores Airlines, Iberia, American Airlines, Air France, Aer Lingus
- Alternative airports
- PSM
Route-level information; individual journeys vary.
A clearer picture of your fare
If the observed fare for this date drops, we will email you. At most one message a day.
Airport to city: straight-line distance
- Lisbon Humberto Delgado (LIS) → Lisbon, city gazetteer reference point (38.7223, -9.1393): ≈ 7 km.
- Portsmouth International Airport at Pease (PSM) → Boston, city gazetteer reference point (42.3584, -71.0598): ≈ 82 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest fare by days before departure
Lowest fare from Lisbon to Boston by days until departure (8 to 30 days): €336 (checked 28 Oct 2026).
| Days before departure | Lowest fare | Priced days |
|---|---|---|
| 0 to 7 days | €400 | 8 |
| 8 to 30 days | €336 | 7 |
One-way fares checked in the last 14 days. Each figure is the lowest stored fare for that distance to departure, not a price forecast.
Fares for different departure dates, checked now; not a guide to when to book.
Lowest one-way fare we saw per airline
Cheapest airline from Lisbon to Boston: Azores Airlines, from €372 (checked 22 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Azores Airlines | €372Jan 9, 2027 | 5 |
| Iberia | €420Jan 29, 2027 | 5 |
| Aer Lingus | €425Jan 29, 2027 | 3 |
| Air France | €438May 12, 2027 | 3 |
One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.
Frequently asked
How much is a flight from Lisbon to Boston?
The lowest fare Routavio has observed is €336, found on 28 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Lisbon to Boston?
In our observations November 2026 is the cheapest month so far, at €336.
Which airlines fly from Lisbon to Boston?
Routavio has seen these carriers on the route: Aer Lingus, Air France, American Airlines, Azores Airlines, British Airways, Finnair, Iberia, KLM, TAP Air Portugal, Turkish Airlines (10).
How many of the observed Lisbon to Boston fares were non-stop?
12 of the 17 fares we observed were non-stop; the rest included at least one stop. That describes our observations, not every flight that operates.
Which airline has the lowest fare from Lisbon to Boston?
Cheapest airline from Lisbon to Boston: Azores Airlines, from €372 (checked 22 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide · Price and schedule freshness on Routavio
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Recently observed fares. Prices may change.