Travel with Axel,
get the best price.

Boston → Copenhagen

May 28, 2027 · return May 31, 2027

BOS → CPH1 adulteconomyRound trip

7 flight options · 6 airlines

Nonstop flights

Fri, May 28 – Mon, May 31

Scandinavian Airlines
5:35 pmBOS
7h 20m
Nonstop
6:55 am+1CPH
Scandinavian Airlines
1:20 pmCPH
8h 25m
Nonstop
3:45 pmBOS

Round-trip total · 1 adult · Taxes included

One-stop flights

Fri, May 28 – Mon, May 31

FI
7:50 pmBOS
9h 55m
KEF · 1h 25m
11:45 am+1CPH
FI
12:55 pmCPH
10h 55m
KEF · 1h 35m
5:50 pmBOS

Round-trip total · 1 adult · Taxes included

Fri, May 28 – Mon, May 31

British Airways
6:45 pmBOS
11h
LHR · 2h 15m
11:45 am+1CPH
KLM Royal Dutch Airlines
2:15 pmCPH
10h 46m
AMS · 1h 30m
7:01 pmBOS

Round-trip total · 1 adult · Taxes included

Fri, May 28 – Mon, May 31

American Airlines
7:15 pmBOS
10h 30m
LHR · 1h 40m
11:45 am+1CPH
KLM Royal Dutch Airlines
2:15 pmCPH
10h 46m
AMS · 1h 30m
7:01 pmBOS

Round-trip total · 1 adult · Taxes included

Fri, May 28 – Mon, May 31

Lufthansa
4:05 pmBOS
11h 20m
FRA · 2h 40m
9:25 am+1CPH
Lufthansa
1:10 pmCPH
11h 25m
MUC · 1h 15m
6:35 pmBOS

Round-trip total · 1 adult · Taxes included

Fri, May 28 – Mon, May 31

Delta Air Lines
10:35 pmBOS
11h
DUB · 2h 45m
3:35 pm+1CPH
KLM Royal Dutch Airlines
2:15 pmCPH
10h 46m
AMS · 1h 30m
7:01 pmBOS

Round-trip total · 1 adult · Taxes included

Fri, May 28 – Mon, May 31

Delta Air Lines
7:25 pmBOS
10h 25m
AMS · 2h 15m
11:50 am+1CPH
KLM Royal Dutch Airlines
2:15 pmCPH
10h 46m
AMS · 1h 30m
7:01 pmBOS

Round-trip total · 1 adult · Taxes included

Make this trip yours

BOS ⇄ CPH

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, Scandinavian Airlines 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 5, 2026 → Nov 8, 2026Nov 14, 2026 → Nov 21, 2026Nov 24, 2026 → Nov 29, 2026Dec 5, 2026 → Dec 12, 2026Dec 17, 2026 → Dec 20, 2026Dec 26, 2026 → Jan 2, 2027Jan 5, 2027 · One wayJan 16, 2027 → Jan 23, 2027Feb 5, 2027 → Feb 8, 2027Apr 3, 2027 → Apr 10, 2027Jun 26, 2027 → Jul 3, 2027Sep 17, 2027 → Sep 20, 2027
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)
2027-05-28 → 2027-05-31Scandinavian AirlinesSK928 / SK927$1000.002026-10-29T00:51:55Z
2027-05-28 → 2027-05-31FIFI630 + FI204 / FI205 + FI631$760.002026-10-29T00:51:55Z
2027-05-28 → 2027-05-31British Airways / KLM Royal Dutch AirlinesBA212 + BA808 / KL1272 + KL617$1000.002026-10-29T00:51:55Z
2027-05-28 → 2027-05-31American Airlines / KLM Royal Dutch AirlinesAA108 + BA808 / KL1272 + KL617$1005.002026-10-29T00:51:55Z
2027-05-28 → 2027-05-31LufthansaLH423 + LH822 / LH2441 + LH424$1020.002026-10-29T00:51:55Z
2027-05-28 → 2027-05-31Delta Air Lines / KLM Royal Dutch AirlinesDL154 + SK538 / KL1272 + KL617$1035.002026-10-29T00:51:55Z
2027-05-28 → 2027-05-31Delta Air Lines / KLM Royal Dutch AirlinesDL256 + SK552 / KL1272 + KL617$1035.002026-10-29T00:51:55Z

2027-05-28 → 2027-05-31 · $1000.00

  • Scandinavian Airlines SK928: BOS 2027-05-28 17:35:00 → CPH 2027-05-29 06:55:00; nonstop; 440 minutes. Local airport times.
  • Scandinavian Airlines SK927: CPH 2027-05-31 13:20:00 → BOS 2027-05-31 15:45:00; nonstop; 505 minutes. Local airport times.

2027-05-28 → 2027-05-31 · $760.00

  • FI FI630 / FI204: BOS 2027-05-28 19:50:00 → CPH 2027-05-29 11:45:00; 1 stop(s) via KEF; 595 minutes. Local airport times.
    • FI630: BOS 2027-05-28 19:50:00 → KEF 2027-05-29 05:05:00; layover at KEF: 85 minutes.
    • FI204: KEF 2027-05-29 06:30:00 → CPH 2027-05-29 11:45:00.
  • FI FI205 / FI631: CPH 2027-05-31 12:55:00 → BOS 2027-05-31 17:50:00; 1 stop(s) via KEF; 655 minutes. Local airport times.
    • FI205: CPH 2027-05-31 12:55:00 → KEF 2027-05-31 14:25:00; layover at KEF: 95 minutes.
    • FI631: KEF 2027-05-31 16:00:00 → BOS 2027-05-31 17:50:00.

2027-05-28 → 2027-05-31 · $1000.00

  • British Airways BA212 / BA808: BOS 2027-05-28 18:45:00 → CPH 2027-05-29 11:45:00; 1 stop(s) via LHR; 660 minutes. Local airport times.
    • BA212: BOS 2027-05-28 18:45:00 → LHR 2027-05-29 06:25:00; layover at LHR: 135 minutes.
    • BA808: LHR 2027-05-29 08:40:00 → CPH 2027-05-29 11:45:00.
  • KLM Royal Dutch Airlines KL1272 / KL617: CPH 2027-05-31 14:15:00 → BOS 2027-05-31 19:01:00; 1 stop(s) via AMS; 646 minutes. Local airport times.
    • KL1272: CPH 2027-05-31 14:15:00 → AMS 2027-05-31 15:40:00; layover at AMS: 90 minutes.
    • KL617: AMS 2027-05-31 17:10:00 → BOS 2027-05-31 19:01:00.

2027-05-28 → 2027-05-31 · $1005.00

  • American Airlines AA108 / BA808: BOS 2027-05-28 19:15:00 → CPH 2027-05-29 11:45:00; 1 stop(s) via LHR; 630 minutes. Local airport times.
    • AA108: BOS 2027-05-28 19:15:00 → LHR 2027-05-29 07:00:00; layover at LHR: 100 minutes.
    • BA808: LHR 2027-05-29 08:40:00 → CPH 2027-05-29 11:45:00.
  • KLM Royal Dutch Airlines KL1272 / KL617: CPH 2027-05-31 14:15:00 → BOS 2027-05-31 19:01:00; 1 stop(s) via AMS; 646 minutes. Local airport times.
    • KL1272: CPH 2027-05-31 14:15:00 → AMS 2027-05-31 15:40:00; layover at AMS: 90 minutes.
    • KL617: AMS 2027-05-31 17:10:00 → BOS 2027-05-31 19:01:00.

2027-05-28 → 2027-05-31 · $1020.00

  • Lufthansa LH423 / LH822: BOS 2027-05-28 16:05:00 → CPH 2027-05-29 09:25:00; 1 stop(s) via FRA; 680 minutes. Local airport times.
    • LH423: BOS 2027-05-28 16:05:00 → FRA 2027-05-29 05:20:00; layover at FRA: 160 minutes.
    • LH822: FRA 2027-05-29 08:00:00 → CPH 2027-05-29 09:25:00.
  • Lufthansa LH2441 / LH424: CPH 2027-05-31 13:10:00 → BOS 2027-05-31 18:35:00; 1 stop(s) via MUC; 685 minutes. Local airport times.
    • LH2441: CPH 2027-05-31 13:10:00 → MUC 2027-05-31 14:50:00; layover at MUC: 75 minutes.
    • LH424: MUC 2027-05-31 16:05:00 → BOS 2027-05-31 18:35:00.

2027-05-28 → 2027-05-31 · $1035.00

  • Delta Air Lines DL154 / SK538: BOS 2027-05-28 22:35:00 → CPH 2027-05-29 15:35:00; 1 stop(s) via DUB; 660 minutes. Local airport times.
    • DL154: BOS 2027-05-28 22:35:00 → DUB 2027-05-29 09:45:00; layover at DUB: 165 minutes.
    • SK538: DUB 2027-05-29 12:30:00 → CPH 2027-05-29 15:35:00.
  • KLM Royal Dutch Airlines KL1272 / KL617: CPH 2027-05-31 14:15:00 → BOS 2027-05-31 19:01:00; 1 stop(s) via AMS; 646 minutes. Local airport times.
    • KL1272: CPH 2027-05-31 14:15:00 → AMS 2027-05-31 15:40:00; layover at AMS: 90 minutes.
    • KL617: AMS 2027-05-31 17:10:00 → BOS 2027-05-31 19:01:00.

2027-05-28 → 2027-05-31 · $1035.00

  • Delta Air Lines DL256 / SK552: BOS 2027-05-28 19:25:00 → CPH 2027-05-29 11:50:00; 1 stop(s) via AMS; 625 minutes. Local airport times.
    • DL256: BOS 2027-05-28 19:25:00 → AMS 2027-05-29 08:15:00; layover at AMS: 135 minutes.
    • SK552: AMS 2027-05-29 10:30:00 → CPH 2027-05-29 11:50:00.
  • KLM Royal Dutch Airlines KL1272 / KL617: CPH 2027-05-31 14:15:00 → BOS 2027-05-31 19:01:00; 1 stop(s) via AMS; 646 minutes. Local airport times.
    • KL1272: CPH 2027-05-31 14:15:00 → AMS 2027-05-31 15:40:00; layover at AMS: 90 minutes.
    • KL617: AMS 2027-05-31 17:10:00 → BOS 2027-05-31 19:01:00.

More dates for this route