Fare Guide

Estimated lowest fares found within 7 days

Cheapest Airline United Airlines

The cheapest airline(s) flying from Boston to Sydney is United Airlines.

  • United Airlines United Airlines
  • Air Canada Air Canada
  • Cathay Pacific Cathay Pacific
  • Fiji Airways Fiji Airways
  • Air New Zealand Air New Zealand
  • Qatar Airways Qatar Airways
  • Qantas Qantas
  • American Airlines American Airlines
  • JetBlue Airways JetBlue Airways
  • All Nippon Airways All Nippon Airways
Cheapest Month April

Travel Period: March 2025 - February 2026

The cheapest month(s) to fly from Boston to Sydney is April.

  • Mar 2025
  • Apr 2025
  • May 2025
  • Jun 2025
  • Jul 2025
  • Aug 2025
  • Sep 2025
  • Oct 2025
  • Nov 2025
  • Dec 2025
  • Jan 2026
  • Feb 2026
Cheapest Day of the Week Saturday

The cheapest day(s) of the week to fly from Boston to Sydney is Saturday.

  • Sun Sunday
  • Mon Monday
  • Tue Tuesday
  • Wed Wednesday
  • Thu Thursday
  • Fri Friday
  • Sat Saturday

Flight Schedules

Last Updated: Thu, 2 Jan, 2025

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      • Availability
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      • 00:30 BOS
        20:50 SYD
        28Hrs, 20m 1 Stop (HKG)
      • BOSBoston Logan International Airport 00:30 - SYD 20:50 28h 20m 1 Stop (HKG) Hong Kong
      • BOSBoston Logan International Airport 00:30
        HKGHong Kong International Airport 08:45
      • HKGHong Kong International Airport 05:10
        SYDSydney Kingsford Smith Airport 20:50
      • 28h 20m (3h 35m)
      • 1 Stop HKG · Hong Kong 3h 35m
      • Cathay Pacific (CX 811)Airbus A351
        Cathay Pacific (CX 139)Airbus A351
      • Cathay Pacific (CX 811)
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        • S
      • 11:00 BOS
        06:55 SYD
        27Hrs, 55m 1 Stop (ICN)
      • BOSBoston Logan International Airport 11:00 - SYD 06:55 27h 55m 1 Stop (ICN) Seoul
      • BOSBoston Logan International Airport 11:00
        ICNSeoul Incheon International Airport 18:45
      • ICNSeoul Incheon International Airport 16:30
        SYDSydney Kingsford Smith Airport 06:55
      • 27h 55m (2h 15m)
      • 1 Stop ICN · Seoul 2h 15m
      • Korean Air (KE 92)Boeing 777 300 Er
        Korean Air (KE 401)Boeing 777 300 Er
      • Korean Air (KE 92)
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      • 13:30 BOS
        09:15 SYD
        27Hrs, 45m 1 Stop (SFO)
      • BOSBoston Logan International Airport 13:30 - SYD 09:15 27h 45m 1 Stop (SFO) San Francisco
      • BOSBoston Logan International Airport 13:30
        SFOSan Francisco International Airport 22:55
      • SFOSan Francisco International Airport 17:21
        SYDSydney Kingsford Smith Airport 09:15
      • 27h 45m (5h 34m)
      • 1 Stop SFO · San Francisco 5h 34m
      • United Airlines (UA 1187)Boeing 757 200 Series
        United Airlines (UA 863)Boeing 777 300 Er
      • United Airlines (UA 1187)
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      • 18:00 BOS
        09:15 SYD
        23Hrs, 15m 1 Stop (SFO)
      • BOSBoston Logan International Airport 18:00 - SYD 09:15 23h 15m 1 Stop (SFO) San Francisco
      • BOSBoston Logan International Airport 18:00
        SFOSan Francisco International Airport 22:55
      • SFOSan Francisco International Airport 21:50
        SYDSydney Kingsford Smith Airport 09:15
      • 23h 15m (1h 05m)
      • 1 Stop SFO · San Francisco 1h 05m
      • United Airlines (UA 2400)Boeing 757 200 Series
        United Airlines (UA 863)Boeing 777 300 Er
      • United Airlines (UA 2400)
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      • 10:05 BNE
        21:50 SFO
        26Hrs, 40m 1 Stop (SYD)
      • BNEBrisbane Airport 10:05 - SFO 21:50 26h 40m 1 Stop (SYD) Sydney
      • BNEBrisbane Airport 10:05
        BOSBoston Logan International Airport 18:00
      • SYDSydney Kingsford Smith Airport 12:40
        SFOSan Francisco International Airport 21:50
      • 26h 40m (3h 50m)
      • 1 Stop SYD · Sydney 3h 50m
      • virgin australia (VA 938)Boeing 737 800
        United Airlines (UA 2400)Boeing 757 200 Series
      • virgin australia (VA 938)
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      How far is Sydney from Boston?

      The flight distance between Boston and Sydney is 16240km. Check all available flights on Wego.

      When is the earliest and latest flight of the day?

      The earliest flight of the day departs at 00:30. The last flight of the day departs at 00:30. See the full list of flight times on Wego.

      All Airports in Boston

      Boston Logan International Airport BOS

      All Airports in Sydney

      Sydney Kingsford Smith Airport SYD

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