BWI - SYD

$921 Find Cheap Flights from Baltimore to Sydney

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Baltimore to Sydney departing on 18/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Sydney

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Baltimore to Sydney, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Baltimore to Sydney, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Baltimore to Sydney (BWI-SYD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Baltimore to Sydney that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Baltimore to Sydney

Fri, 14 Nov - Tue, 25 Nov
Multiple Airlines Logo
10:22 - 12:30BWI-SYD
34h 08m3 stops
Multiple Airlines Logo
14:10 - 09:36SYD-BWI
35h 26m3 stops
$1,786Multiple Airlines
Find Deal
Tue, 11 Nov - Wed, 10 Dec
American Airlines Logo
15:23 - 06:55BWI-SYD
23h 32m1 stop
American Airlines Logo
14:05 - 21:17SYD-BWI
23h 12m1 stop
$1,899American Airlines
Find Deal
Tue, 11 Nov - Sun, 23 Nov
American Airlines Logo
15:23 - 06:55BWI-SYD
23h 32m1 stop
American Airlines Logo
14:05 - 22:54SYD-BWI
24h 49m1 stop
$1,900American Airlines
Find Deal
Wed, 3 Dec - Wed, 17 Dec
Qantas Airways Logo
15:20 - 06:55BWI-SYD
23h 35m1 stop
Qantas Airways Logo
07:05 - 14:28SYD-BWI
23h 23m2 stops
$1,910Qantas Airways
Find Deal
Sun, 8 Feb - Mon, 9 Mar
United Airlines Logo
15:52 - 09:05BWI-SYD
25h 13m2 stops
United Airlines Logo
10:20 - 21:42SYD-BWI
26h 22m2 stops
$1,923United Airlines
Find Deal
Sun, 15 Feb - Tue, 17 Mar
United Airlines Logo
16:05 - 07:00BWI-SYD
22h 55m1 stop
United Airlines Logo
10:20 - 16:52SYD-BWI
21h 32m1 stop
$1,925United Airlines
Find Deal
Mon, 26 Jan - Sat, 28 Feb
Qantas Airways Logo
15:41 - 15:30BWI-SYD
31h 49m2 stops
Qantas Airways Logo
14:05 - 22:59SYD-BWI
24h 54m1 stop
$1,926Qantas Airways
Find Deal
Tue, 2 Dec - Sun, 14 Dec
United Airlines Logo
13:10 - 07:00BWI-SYD
25h 50m2 stops
United Airlines Logo
12:10 - 17:16SYD-BWI
21h 06m1 stop
$1,931United Airlines
Find Deal
Tue, 11 Nov - Wed, 10 Dec
Delta Logo
10:27 - 08:30BWI-SYD
30h 03m2 stops
Delta Logo
10:40 - 22:08SYD-BWI
27h 28m2 stops
$1,972Delta
Find Deal
Mon, 9 Feb - Tue, 10 Mar
Delta Logo
10:38 - 08:30BWI-SYD
29h 52m2 stops
Delta Logo
09:40 - 20:32SYD-BWI
25h 52m2 stops
$1,973Delta
Find Deal

Everything you should know

Top airlines
American Airlines
Cheapest • from $1,899 (return)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
6 weeks
in advance
Our data shows that travellers who book at least 6 weeks in advance save around 25% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 24% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
$1,786
Overall average: $2,371
Multiple Airlines
Fri 14/11Tue 25/11
BWI - SYD • 3 stops
Cheapest one-way flight
$921
Typical prices: $1,042-$1,867
Multiple Airlines
Wed 18/2
BWI - SYD • 1 stop
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Sydney!
Booking Insights

KAYAK's insights & trends for Baltimore to Sydney flights

Get data-powered insights and trends into flights from Baltimore to Sydney to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Baltimore to Sydney?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Baltimore to Sydney, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Baltimore to Sydney is September, where tickets cost $1,762 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $2,942 and $2,905 respectively.

How far in advance should I book a flight from Baltimore to Sydney?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Baltimore to Sydney, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Baltimore to Sydney, you should book around 6 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonMarch
Cheapest flight$921
Best time to beat the crowds (8% less expensive on average)
Most popular time to fly and prices are also 24% lower on average.
Flight from Baltimore to Sydney

When to book flights from Baltimore to Sydney

Are your dates flexible? Find out the best times to travel from Baltimore to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Baltimore to Sydney

  • What is the cheapest flight from Baltimore to Sydney?

    In the last 3 days, the lowest price for a flight from Baltimore to Sydney was $921 for a one-way ticket and $1,786 for a return.

  • Which airports will I be using when flying from Baltimore to Sydney?

    Baltimore airport is called Baltimore/Washington and the only airport in Sydney is Sydney Kingsford Smith.

  • Which aircraft models fly most regularly from Baltimore to Sydney?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Baltimore to Sydney?

    Star Alliance is the only airline alliance operating flights between Baltimore and Sydney.

  • How does KAYAK find such low prices on flights from Baltimore to Sydney?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Baltimore to Sydney.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Baltimore to Sydney?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sydney from Baltimore is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Baltimore to Sydney?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Sydney with an airline and back to Baltimore with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Baltimore to Sydney?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sydney from Baltimore up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Baltimore to Sydney

 
See real verified KAYAK customer reviews for airlines flying from Baltimore to Sydney. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Baltimore to Sydney? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8998 reviews
7.3Comfort
7.1Entertainment
6.6Food
7.7Boarding
8.1Crew
Airline reviews

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

10.0 ExcellentDr. Joseph, Oct 2025STL - ORD
Read more United Airlines reviews

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

The person I bought the ticket for didn’t make the flight.

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

Not the fault of United—weather, reroute around weather, time sitting on tarmac, arrived couple hours late, too late for train into city necessitating a much pricier cab but weather…can’t be helped.

Friendly and professional flight crew. Aside from departure delay after boarding, easy flight and smooth landing.

Great smooth flight. Had a seating change, but that was an improvement. Thanks United Airways Crew.

Everything you need to know for your flight from Baltimore to Sydney

Information on your arrival and departure airports

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