Cheap flights from Portland to Sydney from $395
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Sydney departing on 8/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Portland to Sydney
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Portland and Sydney?
What is the cheapest month to fly to Sydney?
In general, May is the cheapest month to fly from Portland to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,039. If you are unable to visit Sydney during the month of May, then departing from Portland during the month February is also very affordable. Most momondo users find prices during this month for around $1,046.
What is the cheapest day to depart on your flight to Sydney?
The cheapest day to depart from Portland to Sydney is on a Saturday when prices can be found for as low as $1,040. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,146.
What is the cheapest time of day to depart on your flight to Sydney?
According to our data, the cheapest time of day to fly to Sydney is in the morning. momondo users have found flights departing from Portland to Sydney in the morning for as low as $1,060. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly at noon, with an average ticket price of $1,135. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.
How far in advance should I book a flight to Sydney?
You are more likely to see cheaper flights to Sydney from Portland when booking 14 weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,160 when searching 14 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Portland for as low as $921 on momondo.
What is the cheapest airline that flies from Portland to Sydney Kingsford Smith?
Air Canada, American Airlines, and United Airlines are the most popular carriers operating from Portland to Sydney Kingsford Smith
What airlines fly to Sydney?
United Airlines, Air Canada and Delta are the top three most popular airlines that fly to Sydney from Portland according to our data. United Airlines is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 7 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.
When to book flights from Portland to Sydney
Cheap Portland to Sydney (PDX to SYD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Portland to Sydney
How far is Portland to Sydney Kingsford Smith by plane?
A flight from Portland to Sydney Kingsford Smith will travel around 7663.9 mi. A reasonable flight in good conditions will take 18h 20m.
When did momondo last update prices for flights from Portland Airport to Sydney Kingsford Smith Airport?
Prices for flights from Portland Airport to Sydney Kingsford Smith Airport are updated daily.
How many operators does momondo search for flights from Portland Airport to Sydney Kingsford Smith Airport?
As of June 2025, there are 7 operators available to choose from for flights from Portland Airport to Sydney Kingsford Smith Airport.
How old do you have to be to fly from Portland Airport to Sydney Kingsford Smith Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Portland to Sydney?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Portland to Sydney is United Airlines (29% of total bookings). The next most popular airlines are Air Canada (29%), Delta (16%), and Alaska Airlines (9%).
Best airlines flying from Portland to Sydney
Compare and see reviews for airlines that fly from Portland to Sydney with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $680 | Free Cancellation | Rating 7.8 2,494 reviews | |||
| PriceFrom $848 | Free Cancellation | Rating 7.1 9,537 reviews | |||
| PriceFrom $912 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $922 | Free Cancellation | Rating 8.0 7,946 reviews | |||
| PriceFrom $1,043 | Free Cancellation | Rating 7.5 854 reviews | |||
| PriceFrom $1,055 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $1,068 | Free Cancellation | Rating 8.0 10,000 reviews |
Traveling to a place near Sydney?
Book flights to Sydney if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Portland to Sydney?
Finding the right flight to Sydney from Portland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Sydney quick and easy, saving you time and money.
Can I find flights from Portland to Sydney with flexible booking policies on momondo?
Flights from Portland to Sydney with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Portland to Sydney?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Sydney from Portland.
I’m not ready to book a flight from Portland to Sydney right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Portland to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.