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Sault Ste. Marie → Boston

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CIU → BOS1 adulteconomy

6 flight options · 1 airline

Round-trip flights

Fri, Nov 20 – Mon, Nov 23

Delta Air Lines
4:05 pmCIU
4h 46m
DTW · 1h 17m
8:51 pmBOS
Delta Air Lines
1:04 pmBOS
6h 40m
DTW · 2h 56m
7:44 pmCIU

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Delta Air Lines
8:20 amCIU
8h 41m
MSP · 3h 39m
5:01 pmBOS
Delta Air Lines
1:04 pmBOS
6h 40m
DTW · 2h 56m
7:44 pmCIU

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Delta Air Lines
8:20 amCIU
8h 41m
MSP · 3h 39m
5:01 pmBOS
Delta Air Lines
1:04 pmBOS
6h 40m
DTW · 2h 56m
7:44 pmCIU

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Delta Air Lines
4:05 pmCIU
4h 46m
DTW · 1h 17m
8:51 pmBOS
Delta Air Lines
1:04 pmBOS
6h 40m
DTW · 2h 56m
7:44 pmCIU

Round-trip total · 1 adult · Taxes included

One-way flights

Fri, Nov 20 · One way

Delta Air Lines
8:20 amCIU
8h 41m
MSP · 3h 39m
5:01 pmBOS

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Delta Air Lines
4:05 pmCIU
4h 46m
DTW · 1h 17m
8:51 pmBOS

One-way total · 1 adult · Taxes included

Make this trip yours

CIU ⇄ BOS

Economy

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

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Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Delta Air Lines 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.
  • 24-hour cancellationCancel within 24 hours of booking for a full refund when your departure is at least 7 days away. Closer to departure, the airline’s fare rules apply. 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

Nov 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)
2026-11-20 · one wayDelta Air LinesDL4251 + DL2558$235.002026-10-29T00:56:22Z
2026-11-20 → 2026-11-23Delta Air LinesDL4231 + DL1707 / DL2222 + DL4278$430.002026-10-29T00:56:22Z
2026-11-27 → 2026-12-04Delta Air LinesDL4251 + DL2558 / DL2222 + DL4278$483.752026-10-29T00:56:22Z
2026-11-20 · one wayDelta Air LinesDL4231 + DL1707$235.002026-10-29T00:56:22Z
2026-11-20 → 2026-11-23Delta Air LinesDL4251 + DL2558 / DL2222 + DL4278$430.002026-10-29T00:56:22Z
2026-11-27 → 2026-12-04Delta Air LinesDL4231 + DL1707 / DL2222 + DL4278$483.752026-10-29T00:56:22Z

2026-11-20 · one way · $235.00

  • Delta Air Lines DL4251 / DL2558: CIU 2026-11-20 08:20:00 → BOS 2026-11-20 17:01:00; 1 stop(s) via MSP; 521 minutes. Local airport times.
    • DL4251: CIU 2026-11-20 08:20:00 → MSP 2026-11-20 09:30:00; layover at MSP: 219 minutes.
    • DL2558: MSP 2026-11-20 13:09:00 → BOS 2026-11-20 17:01:00.

2026-11-20 → 2026-11-23 · $430.00

  • Delta Air Lines DL4231 / DL1707: CIU 2026-11-20 16:05:00 → BOS 2026-11-20 20:51:00; 1 stop(s) via DTW; 286 minutes. Local airport times.
    • DL4231: CIU 2026-11-20 16:05:00 → DTW 2026-11-20 17:35:00; layover at DTW: 77 minutes.
    • DL1707: DTW 2026-11-20 18:52:00 → BOS 2026-11-20 20:51:00.
  • Delta Air Lines DL2222 / DL4278: BOS 2026-11-23 13:04:00 → CIU 2026-11-23 19:44:00; 1 stop(s) via DTW; 400 minutes. Local airport times.
    • DL2222: BOS 2026-11-23 13:04:00 → DTW 2026-11-23 15:19:00; layover at DTW: 176 minutes.
    • DL4278: DTW 2026-11-23 18:15:00 → CIU 2026-11-23 19:44:00.

2026-11-27 → 2026-12-04 · $483.75

  • Delta Air Lines DL4251 / DL2558: CIU 2026-11-27 08:20:00 → BOS 2026-11-27 17:01:00; 1 stop(s) via MSP; 521 minutes. Local airport times.
    • DL4251: CIU 2026-11-27 08:20:00 → MSP 2026-11-27 09:30:00; layover at MSP: 219 minutes.
    • DL2558: MSP 2026-11-27 13:09:00 → BOS 2026-11-27 17:01:00.
  • Delta Air Lines DL2222 / DL4278: BOS 2026-12-04 13:04:00 → CIU 2026-12-04 19:44:00; 1 stop(s) via DTW; 400 minutes. Local airport times.
    • DL2222: BOS 2026-12-04 13:04:00 → DTW 2026-12-04 15:19:00; layover at DTW: 176 minutes.
    • DL4278: DTW 2026-12-04 18:15:00 → CIU 2026-12-04 19:44:00.

2026-11-20 · one way · $235.00

  • Delta Air Lines DL4231 / DL1707: CIU 2026-11-20 16:05:00 → BOS 2026-11-20 20:51:00; 1 stop(s) via DTW; 286 minutes. Local airport times.
    • DL4231: CIU 2026-11-20 16:05:00 → DTW 2026-11-20 17:35:00; layover at DTW: 77 minutes.
    • DL1707: DTW 2026-11-20 18:52:00 → BOS 2026-11-20 20:51:00.

2026-11-20 → 2026-11-23 · $430.00

  • Delta Air Lines DL4251 / DL2558: CIU 2026-11-20 08:20:00 → BOS 2026-11-20 17:01:00; 1 stop(s) via MSP; 521 minutes. Local airport times.
    • DL4251: CIU 2026-11-20 08:20:00 → MSP 2026-11-20 09:30:00; layover at MSP: 219 minutes.
    • DL2558: MSP 2026-11-20 13:09:00 → BOS 2026-11-20 17:01:00.
  • Delta Air Lines DL2222 / DL4278: BOS 2026-11-23 13:04:00 → CIU 2026-11-23 19:44:00; 1 stop(s) via DTW; 400 minutes. Local airport times.
    • DL2222: BOS 2026-11-23 13:04:00 → DTW 2026-11-23 15:19:00; layover at DTW: 176 minutes.
    • DL4278: DTW 2026-11-23 18:15:00 → CIU 2026-11-23 19:44:00.

2026-11-27 → 2026-12-04 · $483.75

  • Delta Air Lines DL4231 / DL1707: CIU 2026-11-27 16:05:00 → BOS 2026-11-27 20:51:00; 1 stop(s) via DTW; 286 minutes. Local airport times.
    • DL4231: CIU 2026-11-27 16:05:00 → DTW 2026-11-27 17:35:00; layover at DTW: 77 minutes.
    • DL1707: DTW 2026-11-27 18:52:00 → BOS 2026-11-27 20:51:00.
  • Delta Air Lines DL2222 / DL4278: BOS 2026-12-04 13:04:00 → CIU 2026-12-04 19:44:00; 1 stop(s) via DTW; 400 minutes. Local airport times.
    • DL2222: BOS 2026-12-04 13:04:00 → DTW 2026-12-04 15:19:00; layover at DTW: 176 minutes.
    • DL4278: DTW 2026-12-04 18:15:00 → CIU 2026-12-04 19:44:00.

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