$812 Cheap Flights from Baltimore (BWI) to Perth (PER)

View $812 flight on Wed, Oct 28, 2026Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to Perth Airport (PER)

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Cheap Flights from Baltimore to Perth (BWI-PER)

Prices were available within the past 7 days and start at $812 for one-way flights and $1,598 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air New Zealand
Sun, Apr 5 - Sat, Apr 25
BWI
Baltimore
PER
Perth
$1,598 Roundtrip, found 8 hours ago
$1,598
Roundtrip
found 8 hours ago
Select Air New Zealand flight, departing Sun, Apr 5 from Baltimore to Perth, returning Sat, Apr 25, priced at $1,598 found 8 hours ago
American Airlines
Sun, Mar 1 - Sun, Mar 8
BWI
Baltimore
PER
Perth
$1,606 Roundtrip, found 3 days ago
$1,606
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sun, Mar 1 from Baltimore to Perth, returning Sun, Mar 8, priced at $1,606 found 3 days ago
Air New Zealand
Sat, Aug 8 - Mon, Aug 17
BWI
Baltimore
PER
Perth
$1,647 Roundtrip, found 4 days ago
$1,647
Roundtrip
found 4 days ago
Select Air New Zealand flight, departing Sat, Aug 8 from Baltimore to Perth, returning Mon, Aug 17, priced at $1,647 found 4 days ago
Alaska Airlines
Fri, Apr 24 - Wed, May 6
BWI
Baltimore
PER
Perth
$1,653 Roundtrip, found 3 days ago
$1,653
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Fri, Apr 24 from Baltimore to Perth, returning Wed, May 6, priced at $1,653 found 3 days ago
Air New Zealand
Sat, Aug 8 - Mon, Aug 17
BWI
Baltimore
PER
Perth
$1,662 Roundtrip, found 4 days ago
$1,662
Roundtrip
found 4 days ago
Select Air New Zealand flight, departing Sat, Aug 8 from Baltimore to Perth, returning Mon, Aug 17, priced at $1,662 found 4 days ago
Alaska Airlines
Wed, Sep 2 - Wed, Sep 16
BWI
Baltimore
PER
Perth
$1,678 Roundtrip, found 3 hours ago
$1,678
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Wed, Sep 2 from Baltimore to Perth, returning Wed, Sep 16, priced at $1,678 found 3 hours ago
Alaska Airlines
Wed, Sep 2 - Wed, Sep 16
BWI
Baltimore
PER
Perth
$1,685 Roundtrip, found 3 hours ago
$1,685
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Wed, Sep 2 from Baltimore to Perth, returning Wed, Sep 16, priced at $1,685 found 3 hours ago
Alaska Airlines
Mon, Mar 2 - Fri, Mar 6
BWI
Baltimore
PER
Perth
$1,687 Roundtrip, found 3 days ago
$1,687
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Mon, Mar 2 from Baltimore to Perth, returning Fri, Mar 6, priced at $1,687 found 3 days ago
United
Sat, Aug 8 - Mon, Aug 17
BWI
Baltimore
PER
Perth
$1,697 Roundtrip, found 4 days ago
$1,697
Roundtrip
found 4 days ago
Select United flight, departing Sat, Aug 8 from Baltimore to Perth, returning Mon, Aug 17, priced at $1,697 found 4 days ago
Qantas Airways
Sun, Mar 1 - Sun, Mar 8
BWI
Baltimore
PER
Perth
$1,709 Roundtrip, found 3 days ago
$1,709
Roundtrip
found 3 days ago
Select Qantas Airways flight, departing Sun, Mar 1 from Baltimore to Perth, returning Sun, Mar 8, priced at $1,709 found 3 days ago

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Alternative airports near Perth

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Perth Airport PER. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $1,754
PER
Perth Airport
CheapestClosest
Average driving time to city center14 min
Flights from $1,754

Frequently asked questions

How much does a flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER) cost?
You can find cheap one-way flights from $812 and cheap return flights from $1,598 Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER) with Expedia. One-way flights typically cost between $1165 and $9969, and return flights often range between $2100 and $15075. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER)?
The cheapest month to fly from BWI to PER is April when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER)?
Enter BWI to PER and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER)?
Singapore Airlines is one of the cheapest airlines offering connecting flights from Baltimore, MD (BWI) to Perth, WA (PER), with round-trip tickets starting from around $1941 with a layover in Los Angeles Intl. (LAX). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER)?
To find a cheap flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from BWI to PER. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER)?
The most popular departure times for flights from Baltimore (BWI) to Perth (PER) are in the early afternoon, from 12pm to 3pm. About 39% of passengers prefer this time window. Many major carriers, including American Airlines and Qantas, offer flights during this window. This timing is favored as it allows you to maximize your day before heading to the airport.
Can you fly business or first class from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER)?
Business class seats are offered on the BWI to PER route with American Airlines and United Airlines.First class is available with United Airlines.
How do I earn miles on a Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER) flight with Expedia?
It's easy to earn miles on a Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER) at the last minute?
Typically, booking a last minute flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER) flight and hotel package?
Securing a Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER) Perth Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER)?
If you booked your Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Perth, WA (PER) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Perth
Airlines serving
Air New Zealand, All Nippon Airways, American Airlines, Cathay Pacific, Qantas Airways, Qatar Airways, Singapore Airlines, United
Roundtrip price
$1,597
Distance
11568 mi

Book with confidence

Baltimore to Perth Flights

The cheapest times to fly from Baltimore to Perth

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Baltimore to Perth are during the month of April. You can find some of the cheapest flights from Baltimore to Perth with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Baltimore to Perth

Sunday is one of the best days to book for cheap flights from Baltimore to Perth: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Baltimore to Perth

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Baltimore to Perth in 2026. You can also book with separate airlines for your outbound and return journeys, from $812 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Baltimore to Perth flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Baltimore to Perth airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Baltimore to Perth Flights

*Flight schedules are subject to change.

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