Travel with Axel,
get the best price.

Boston → Lisbon

Dec 17, 2026 · return Dec 20, 2026

BOS → LIS1 adulteconomyRound trip

8 flight options · 6 airlines

Nonstop flights

Thu, Dec 17 – Sun, Dec 20

TAP Air Portugal
10:20 pmBOS
6h 35m
Nonstop
9:55 am+1LIS
TAP Air Portugal
5:00 pmLIS
7h 55m
Nonstop
7:55 pmBOS

Round-trip total · 1 adult · Taxes included

Thu, Dec 17 – Sun, Dec 20

Delta Air Lines
9:30 pmBOS
6h 25m
Nonstop
8:55 am+1LIS
Delta Air Lines
11:15 amLIS
7h 38m
Nonstop
1:53 pmBOS

Round-trip total · 1 adult · Taxes included

One-stop flights

Thu, Dec 17 – Sun, Dec 20

S4
9:25 pmBOS
9h 25m
PDL · 2h 15m
11:50 am+1LIS
S4
2:05 pmLIS
10h 55m
PDL · 2h 15m
8:00 pmBOS

Round-trip total · 1 adult · Taxes included

Thu, Dec 17 – Sun, Dec 20

Air Canada
3:30 pmBOS
10h 25m
YUL · 2h 20m
6:55 am+1LIS
Air Canada
11:20 amLIS
11h 38m
YYZ · 1h 30m
5:58 pmBOS

Round-trip total · 1 adult · Taxes included

Thu, Dec 17 – Sun, Dec 20

United Airlines
3:42 pmBOS
11h 28m
EWR · 3h 17m
8:10 am+1LIS
United Airlines
11:55 amLIS
12h 2m
IAD · 2h
6:57 pmBOS

Round-trip total · 1 adult · Taxes included

Thu, Dec 17 – Sun, Dec 20

Swiss International Air Lines
9:50 pmBOS
11h 45m
ZRH · 1h 25m
2:35 pm+1LIS
Delta Air Lines
11:15 amLIS
7h 38m
Nonstop
1:53 pmBOS

Round-trip total · 1 adult · Taxes included

Thu, Dec 17 – Sun, Dec 20

TAP Air Portugal
10:45 pmBOS
9h 15m
OPO · 1h 30m
1:00 pm+1LIS
TAP Air Portugal
5:00 pmLIS
7h 55m
Nonstop
7:55 pmBOS

Round-trip total · 1 adult · Taxes included

Thu, Dec 17 – Sun, Dec 20

Delta Air Lines
5:05 pmBOS
9h 55m
JFK · 1h 29m
8:00 am+1LIS
Delta Air Lines
11:15 amLIS
7h 38m
Nonstop
1:53 pmBOS

Round-trip total · 1 adult · Taxes included

Make this trip yours

BOS ⇄ LIS

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, TAP Air Portugal emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

More dates

All dates for this routeNov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-17 → 2026-12-20TAP Air PortugalTP216 / TP215$678.502026-10-29T00:52:23Z
2026-12-17 → 2026-12-20Delta Air LinesDL124 / DL125$828.002026-10-29T00:52:23Z
2026-12-17 → 2026-12-20S4S4224 + S4120 / S4125 + S4281$598.002026-10-29T00:52:23Z
2026-12-17 → 2026-12-20Air CanadaAC8607 + AC812 / AC811 + AC8696$701.502026-10-29T00:52:23Z
2026-12-17 → 2026-12-20United AirlinesUA546 + UA64 / UA943 + UA688$759.002026-10-29T00:52:23Z
2026-12-17 → 2026-12-20Swiss International Air Lines / Delta Air LinesLX53 + LX2084 / DL125$808.002026-10-29T00:52:23Z
2026-12-17 → 2026-12-20TAP Air PortugalTP228 + TP1927 / TP215$658.502026-10-29T00:52:23Z
2026-12-17 → 2026-12-20Delta Air LinesDL5814 + DL272 / DL125$798.002026-10-29T00:52:23Z

2026-12-17 → 2026-12-20 · $678.50

  • TAP Air Portugal TP216: BOS 2026-12-17 22:20:00 → LIS 2026-12-18 09:55:00; nonstop; 395 minutes. Local airport times.
  • TAP Air Portugal TP215: LIS 2026-12-20 17:00:00 → BOS 2026-12-20 19:55:00; nonstop; 475 minutes. Local airport times.

2026-12-17 → 2026-12-20 · $828.00

  • Delta Air Lines DL124: BOS 2026-12-17 21:30:00 → LIS 2026-12-18 08:55:00; nonstop; 385 minutes. Local airport times.
  • Delta Air Lines DL125: LIS 2026-12-20 11:15:00 → BOS 2026-12-20 13:53:00; nonstop; 458 minutes. Local airport times.

2026-12-17 → 2026-12-20 · $598.00

  • S4 S4224 / S4120: BOS 2026-12-17 21:25:00 → LIS 2026-12-18 11:50:00; 1 stop(s) via PDL; 565 minutes. Local airport times.
    • S4224: BOS 2026-12-17 21:25:00 → PDL 2026-12-18 06:20:00; layover at PDL: 135 minutes.
    • S4120: PDL 2026-12-18 08:35:00 → LIS 2026-12-18 11:50:00.
  • S4 S4125 / S4281: LIS 2026-12-20 14:05:00 → BOS 2026-12-20 20:00:00; 1 stop(s) via PDL; 655 minutes. Local airport times.
    • S4125: LIS 2026-12-20 14:05:00 → PDL 2026-12-20 15:35:00; layover at PDL: 135 minutes.
    • S4281: PDL 2026-12-20 17:50:00 → BOS 2026-12-20 20:00:00.

2026-12-17 → 2026-12-20 · $701.50

  • Air Canada AC8607 / AC812: BOS 2026-12-17 15:30:00 → LIS 2026-12-18 06:55:00; 1 stop(s) via YUL; 625 minutes. Local airport times.
    • AC8607: BOS 2026-12-17 15:30:00 → YUL 2026-12-17 16:55:00; layover at YUL: 140 minutes.
    • AC812: YUL 2026-12-17 19:15:00 → LIS 2026-12-18 06:55:00.
  • Air Canada AC811 / AC8696: LIS 2026-12-20 11:20:00 → BOS 2026-12-20 17:58:00; 1 stop(s) via YYZ; 698 minutes. Local airport times.
    • AC811: LIS 2026-12-20 11:20:00 → YYZ 2026-12-20 14:45:00; layover at YYZ: 90 minutes.
    • AC8696: YYZ 2026-12-20 16:15:00 → BOS 2026-12-20 17:58:00.

2026-12-17 → 2026-12-20 · $759.00

  • United Airlines UA546 / UA64: BOS 2026-12-17 15:42:00 → LIS 2026-12-18 08:10:00; 1 stop(s) via EWR; 688 minutes. Local airport times.
    • UA546: BOS 2026-12-17 15:42:00 → EWR 2026-12-17 17:08:00; layover at EWR: 197 minutes.
    • UA64: EWR 2026-12-17 20:25:00 → LIS 2026-12-18 08:10:00.
  • United Airlines UA943 / UA688: LIS 2026-12-20 11:55:00 → BOS 2026-12-20 18:57:00; 1 stop(s) via IAD; 722 minutes. Local airport times.
    • UA943: LIS 2026-12-20 11:55:00 → IAD 2026-12-20 15:15:00; layover at IAD: 120 minutes.
    • UA688: IAD 2026-12-20 17:15:00 → BOS 2026-12-20 18:57:00.

2026-12-17 → 2026-12-20 · $808.00

  • Swiss International Air Lines LX53 / LX2084: BOS 2026-12-17 21:50:00 → LIS 2026-12-18 14:35:00; 1 stop(s) via ZRH; 705 minutes. Local airport times.
    • LX53: BOS 2026-12-17 21:50:00 → ZRH 2026-12-18 11:10:00; layover at ZRH: 85 minutes.
    • LX2084: ZRH 2026-12-18 12:35:00 → LIS 2026-12-18 14:35:00.
  • Delta Air Lines DL125: LIS 2026-12-20 11:15:00 → BOS 2026-12-20 13:53:00; nonstop; 458 minutes. Local airport times.

2026-12-17 → 2026-12-20 · $658.50

  • TAP Air Portugal TP228 / TP1927: BOS 2026-12-17 22:45:00 → LIS 2026-12-18 13:00:00; 1 stop(s) via OPO; 555 minutes. Local airport times.
    • TP228: BOS 2026-12-17 22:45:00 → OPO 2026-12-18 10:30:00; layover at OPO: 90 minutes.
    • TP1927: OPO 2026-12-18 12:00:00 → LIS 2026-12-18 13:00:00.
  • TAP Air Portugal TP215: LIS 2026-12-20 17:00:00 → BOS 2026-12-20 19:55:00; nonstop; 475 minutes. Local airport times.

2026-12-17 → 2026-12-20 · $798.00

  • Delta Air Lines DL5814 / DL272: BOS 2026-12-17 17:05:00 → LIS 2026-12-18 08:00:00; 1 stop(s) via JFK; 595 minutes. Local airport times.
    • DL5814: BOS 2026-12-17 17:05:00 → JFK 2026-12-17 18:46:00; layover at JFK: 89 minutes.
    • DL272: JFK 2026-12-17 20:15:00 → LIS 2026-12-18 08:00:00.
  • Delta Air Lines DL125: LIS 2026-12-20 11:15:00 → BOS 2026-12-20 13:53:00; nonstop; 458 minutes. Local airport times.

More dates for this route