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Flights from Seattle to Melbourne

Find cheap airlines flights from Seattle to Melbourne

You can choose from 2 airlines that fly from Seattle to Melbourne, including Cathay Pacific, United Airlines, Singapore Airlines has lowest fares on this route.
Cathay Pacific logo Cathay Pacific
United Airlines logo United Airlines
Airlines are determined based on actual purchased flight tickets from Seattle to Melbourne according to previous 12 months data from Trip.com.

Find flight deals from Seattle to Melbourne for the next 3 months. Book one way flights from $467 or round trip flights from $1,068.

      • SEA 12:34 PM
        25h 56m
        1 stop
        MEL 7:30 AM
        Seattle - Melbourne | Wed, May 20 | United Airlines
        MEL 10:55 AM
        20h 35m
        1 stop
        SEA 2:30 PM
        Melbourne - Seattle | Wed, May 27 | United Airlines
        $1,068 $1,414
        24% off
        24% off
        $1,414 $1,068
      • SEA 5:28 PM
        20h 17m
        1 stop
        MEL 6:45 AM
        Seattle - Melbourne | Wed, May 20 | Qantas Airways
        MEL 9:45 AM
        21h 12m
        1 stop
        SEA 1:57 PM
        Melbourne - Seattle | Wed, May 27 | Qantas Airways
        $1,077 $1,414
        24% off
        24% off
        $1,414 $1,077
      • SEA 5:20 PM
        21h 55m
        1 stop
        MEL 8:15 AM
        Seattle - Melbourne | Sun, May 24 | United Airlines
        MEL 10:55 AM
        18h 39m
        1 stop
        SEA 12:34 PM
        Melbourne - Seattle | Thu, May 28 | United Airlines
        $1,080 $1,414
        24% off
        24% off
        $1,414 $1,080
      • SEA 7:00 AM
        30h 45m
        1 stop
        MEL 6:45 AM
        Seattle - Melbourne | Sun, May 24 | Qantas Airways
        MEL 9:45 AM
        21h 12m
        1 stop
        SEA 1:57 PM
        Melbourne - Seattle | Thu, May 28 | Qantas Airways
        $1,080
        24% off
        $1,414 $1,080
      • SEA 2:50 PM
        24h
        1 stop
        MEL 7:50 AM
        Seattle - Melbourne | Wed, May 20 | Delta Air Lines
        MEL 9:45 AM
        21h 12m
        1 stop
        SEA 1:57 PM
        Melbourne - Seattle | Wed, May 27 | American Airlines
        $1,149
        19% off
        $1,414 $1,149
      • SEA 5:55 PM
        20h 55m
        1 stop
        MEL 7:50 AM
        Seattle - Melbourne | Sun, May 24 | Delta Air Lines
        MEL 9:45 AM
        21h 12m
        1 stop
        SEA 1:57 PM
        Melbourne - Seattle | Thu, May 28 | American Airlines
        $1,155
        18% off
        $1,414 $1,155
      • SEA 5:25 PM
        21h 50m
        1 stop
        MEL 8:15 AM
        Seattle - Melbourne | Sat, May 9 | United Airlines
        MEL 10:00 AM
        22h 5m
        1 stop
        SEA 3:05 PM
        Melbourne - Seattle | Fri, May 15 | Delta Air Lines
        $1,301
        8% off
        $1,414 $1,301
      • SEA 5:20 PM
        21h 55m
        1 stop
        MEL 8:15 AM
        Seattle - Melbourne | Wed, Jun 3 | United Airlines
        MEL 10:55 AM
        22h 29m
        1 stop
        SEA 4:24 PM
        Melbourne - Seattle | Mon, Jun 8 | United Airlines
        $1,311
        7% off
        $1,414 $1,311
      • SEA 5:25 PM
        21h 50m
        1 stop
        MEL 8:15 AM
        Seattle - Melbourne | Fri, May 8 | United Airlines
        MEL 10:55 AM
        18h 30m
        1 stop
        SEA 12:25 PM
        Melbourne - Seattle | Wed, May 13 | United Airlines
        $1,311
        7% off
        $1,414 $1,311
      • SEA 5:20 PM
        21h 55m
        1 stop
        MEL 8:15 AM
        Seattle - Melbourne | Sat, May 23 | United Airlines
        MEL 10:55 AM
        18h 39m
        1 stop
        SEA 12:34 PM
        Melbourne - Seattle | Sat, May 30 | United Airlines
        $1,315
        7% off
        $1,414 $1,315
      • SEA 1:00 PM
        17h 25m
        1 stop
        MEL Invalid Date
        Seattle - Melbourne | Tue, Apr 21 | Normal Airline
        MEL 3:00 PM
        6h
        Nonstop
        SEA 4:00 PM
        Melbourne - Seattle | Thu, Apr 23 | Normal Airline
        Find more flights
        Find more flights
      • SEA 10:15 AM
        27h
        1 stop
        MEL 6:15 AM
        Seattle - Melbourne | Fri, May 1 | Singapore Airlines
        $467 $712
        34% off
        34% off
        $712 $467
      • SEA 11:39 AM
        27h 36m
        1 stop
        MEL 8:15 AM
        Seattle - Melbourne | Fri, May 1 | United Airlines
        $572 $712
        20% off
        20% off
        $712 $572
      • SEA 7:40 AM
        30h 5m
        1 stop
        MEL 6:45 AM
        Seattle - Melbourne | Fri, May 1 | Qantas Airways
        $580 $712
        19% off
        19% off
        $712 $580
      • SEA 7:59 PM
        42h 51m
        1 stop
        MEL 7:50 AM
        Seattle - Melbourne | Fri, May 1 | Delta Air Lines
        $584
        18% off
        $712 $584
      • SEA 8:45 AM
        29h 45m
        1 stop
        MEL 7:30 AM
        Seattle - Melbourne | Sat, Apr 25 | United Airlines
        $603
        15% off
        $712 $603
      • SEA 10:10 AM
        28h 40m
        1 stop
        MEL 7:50 AM
        Seattle - Melbourne | Sat, Apr 25 | Delta Air Lines
        $612
        14% off
        $712 $612
      • SEA 8:07 PM
        41h 38m
        1 stop
        MEL 6:45 AM
        Seattle - Melbourne | Sat, Apr 25 | Qantas Airways
        $613
        14% off
        $712 $613
      • SEA 7:59 PM
        42h 51m
        1 stop
        MEL 7:50 AM
        Seattle - Melbourne | Fri, Apr 24 | Delta Air Lines
        $614
        14% off
        $712 $614
      • SEA 10:29 AM
        28h 46m
        1 stop
        MEL 8:15 AM
        Seattle - Melbourne | Sun, Jun 14 | United Airlines
        $657
        8% off
        $712 $657
      • SEA 10:29 AM
        28h 46m
        1 stop
        MEL 8:15 AM
        Seattle - Melbourne | Wed, Jun 10 | United Airlines
        $662
        7% off
        $712 $662
      • SEA 1:00 PM
        17h 25m
        1 stop
        MEL Invalid Date
        Seattle - Melbourne | Tue, Apr 21 | Normal Airline
        Find more flights
        Find more flights

Displayed flight fares from Seattle to Melbourne are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Flight Info | Seattle to Melbourne

The distance between Seattle and Melbourne is approximately 13,174.85 km. Based on Trip.com's data travel demand peaks in January. The off-season for travel is November.

Cheapest one-way flight price$467
Cheapest round-trip ticket price$1,068
Off-season for travelNovember
Peak season for travelJanuary
Flight distance13,174.85 km
Popular airlineCathay Pacific
Flight statistics for the Seattle–Melbourne route are based on aggregated booking data from Trip.com over the past 12 months.

Frequently Asked Questions

  • What are the cheapest flights from Seattle to Melbourne (SEA-MEL)?

    Based on Trip.com data, Singapore Airlines offers one-way fares as low as $467 on Cheapest nonstop routes (e.g. SEA to MEL on Fri, May 1), while United Airlines offers Cheapest nonstop round-trips from $1,068 departing on Wed, May 20 and returning on Wed, May 27.
  • At the moment, several airlines serve connecting flights from Seattle to Melbourne, including: Cathay Pacific Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seattle to Melbourne is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Seattle to Melbourne, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Fri, May 1, with one-way flights priced at just $467.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Singapore Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Melbourne travel is around January.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Seattle to Melbourne is November, when demand for travel is lower.
  • After crunching the numbers on our April flight calendar, it's currently cheapest to fly from Seattle to Melbourne on April 30, 2026 with Singapore Airlines, with prices starting at $522.
  • You can land at any one of the following hubs in Melbourne, with Seattle-Tacoma International Airport to Melbourne Airport (SEA-MEL) is by far the most common option on this route: Melbourne Airport (MEL) Avalon Airport (AVV) Moorabbin (Harry Hawker) Airport (MBW) Essendon Airport (MEB).
  • The time difference between Melbourne and Seattle is 18h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

Explore More Popular Flights

Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.