What are the cheapest airlines flying from Portland to Sydney round-trip?

Cheapflights users have booked flights from Portland to Sydney round-trip from $1,707. Other airlines that can offer you cheap pricing are Hawaiian Airlines, from $1,819, and Alaska Airlines, from $1,829. You may be able to fly from Portland to Sydney for 8% less than the average price by searching for these airlines. Find deals

What are the cheapest airlines to fly from Portland to Sydney one-way?

One-way options have recently been found by users for as low as $1,100 on Alaska Airlines. Other airlines that offer cheap prices include American Airlines from $1,104 and United Airlines from $1,115 one-way. Find deals

What is the cheapest day to fly from Portland to Sydney?

Travellers seeking maximum savings on their Portland to Sydney flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest day to fly return from Portland to Sydney?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 62% on your flight compared to booking on days when demand is much higher.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 25 days in advance, which can save you up to 107% on flights from Portland to Sydney compared to booking the week you need them. Waiting 25 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $1,439. For sooner than that we have options available in the next 3 days from $1,848.

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

Flights from Portland to Sydney lean towards being more expensive in December. Prices are generally better when you fly from Portland to Sydney in February, with the cheapest ticket starting at $1,401.

Can I find deals for flights from Portland to Sydney that include hotel bookings?

Yes. In addition to deals on Portland to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Portland to Sydney?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Sydney.

Can I find deals for business class flights from Portland to Sydney?

Yes. Cheapflights offers flight deals from Portland to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$1,072+ Flights from Portland to Sydney

Cheapflights Tip: The best prices from Portland to Sydney Kingsford Smith are usually found in February or August, booked 25 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Portland to Sydney

Round-trip from	$1,566
One-way from	$1,072
Popular in	December
Cheapest in	February
Average price	$1,886

11/8-22/8
3 total stops
75h 51m total
Portland to Sydney

Search Deals

9/7
3 total stops
35h 40m total
Portland to Sydney

Search Deals

Highest demand for flights based on searches. 13% potential increase in price ($451 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($94 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from Portland to Sydney

Cheapest flights from Portland to Sydney
Explore the most affordable flight options available from Portland to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 April 2025.

Mon 11/817:09PDX - SYD

2 stops52h 31mMultiple Airlines

Fri 22/816:20SYD - PDX

1 stop23h 20mMultiple Airlines

Deal found 14/4$1,566

Sun 16/1119:05PDX - SYD

1 stop19h 30mAir Canada

Wed 26/1111:20SYD - PDX

1 stop26h 04mAir Canada

Deal found 14/4$1,683

Fri 29/807:35PDX - SYD

1 stop19h 10mHawaiian Airlines

Tue 9/921:40SYD - PDX

1 stop25h 20mHawaiian Airlines

Deal found 14/4$1,819

Fri 29/807:35PDX - SYD

1 stop19h 10mAlaska Airlines

Tue 9/921:40SYD - PDX

2 stops25h 28mAlaska Airlines

Deal found 14/4$1,829

Fri 29/810:00PDX - SYD

2 stops30h 25mANA

Fri 12/911:50SYD - PDX

2 stops23h 56mANA

Deal found 15/4$1,933

Tue 22/715:25PDX - SYD

2 stops24h 20mAir New Zealand

Tue 29/709:55SYD - PDX

2 stops25h 51mAir New Zealand

Deal found 15/4$1,959

Wed 3/914:00PDX - SYD

1 stop24h 05mAmerican Airlines

Wed 17/909:10SYD - PDX

1 stop20h 35mAmerican Airlines

Deal found 14/4$1,963

Mon 11/807:00PDX - SYD

2 stops30h 55mUnited Airlines

Mon 25/809:30SYD - PDX

2 stops28h 19mUnited Airlines

Deal found 14/4$1,993

Sun 20/717:10PDX - SYD

1 stop20h 25mDelta

Wed 30/709:25SYD - PDX

1 stop26h 51mDelta

Deal found 15/4$1,995

Sun 30/1112:30PDX - SYD

1 stop25h 30mQantas Airways

Wed 7/117:25SYD - PDX

1 stop24h 35mQantas Airways

Deal found 15/4$2,012

Best flights from Portland to Sydney
Discover carefully curated flight deals from Portland to Sydney that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 April 2025.

Mon 11/817:09PDX - SYD

2 stops52h 31mMultiple Airlines

Fri 22/816:20SYD - PDX

1 stop23h 20mMultiple Airlines

Deal found 14/4$1,566

Fri 8/815:25PDX - SYD

1 stop22h 55mAir Canada

Thu 14/807:00SYD - PDX

2 stops19h 25mAir Canada

Deal found 13/4$1,707

Fri 29/807:35PDX - SYD

1 stop19h 10mHawaiian Airlines

Tue 9/921:40SYD - PDX

1 stop25h 20mHawaiian Airlines

Deal found 14/4$1,819

Fri 29/807:35PDX - SYD

1 stop19h 10mAlaska Airlines

Tue 9/921:40SYD - PDX

2 stops25h 28mAlaska Airlines

Deal found 14/4$1,829

Fri 29/810:00PDX - SYD

2 stops30h 25mANA

Fri 12/911:50SYD - PDX

2 stops23h 56mANA

Deal found 15/4$1,933

Tue 22/715:25PDX - SYD

2 stops24h 20mAir New Zealand

Tue 29/709:55SYD - PDX

2 stops25h 51mAir New Zealand

Deal found 15/4$1,959

Wed 3/914:00PDX - SYD

1 stop24h 05mAmerican Airlines

Wed 17/909:10SYD - PDX

1 stop20h 35mAmerican Airlines

Deal found 14/4$1,963

Mon 11/819:35PDX - SYD

1 stop18h 20mUnited Airlines

Mon 25/810:20SYD - PDX

1 stop19h 23mUnited Airlines

Deal found 14/4$1,986

Sun 20/717:10PDX - SYD

1 stop20h 25mDelta

Wed 30/709:25SYD - PDX

1 stop26h 51mDelta

Deal found 15/4$1,995

Thu 29/521:30PDX - SYD

3 stops51h 20mAir Tahiti Nui

Thu 5/607:10SYD - PDX

3 stops30h 38mAir Tahiti Nui

Deal found 13/4$3,254

Mon 11/807:47PDX - SYD

3 stops42h 13mTurkish Airlines

Fri 22/820:55SYD - PDX

3 stops64h 41mTurkish Airlines

Deal found 14/4$4,133

Fri 29/817:30PDX - SYD

3 stops28h 40mQantas Airways

Tue 9/907:15SYD - PDX

2 stops26h 15mQantas Airways

Deal found 14/4$4,774

Last-minute flights from Portland to Sydney
Discover last-minute flight deals from Portland to Sydney. Data last updated 15 April 2025 and is based on user searches.

Tue 15/418:07PDX - SYD

1 stop32h 38mAlaska Airlines

Tue 22/421:40SYD - PDX

2 stops40h 20mAlaska Airlines

Deal found 14/4$1,883

Fri 18/408:05PDX - SYD

1 stop18h 40mHawaiian Airlines

Sun 20/421:40SYD - PDX

1 stop17h 10mHawaiian Airlines

Deal found 14/4$1,829

Fri 18/415:45PDX - SYD

1 stop22h 10mUnited Airlines

Sat 3/510:20SYD - PDX

1 stop19h 19mUnited Airlines

Deal found 14/4$2,603

Fri 18/419:25PDX - SYD

2 stops40h 55mBritish Airways

Sat 3/514:40SYD - PDX

3 stops45h 03mBritish Airways

Deal found 14/4$15,854

Mon 21/418:55PDX - SYD

2 stops42h 45mMultiple Airlines

Mon 28/420:25SYD - PDX

1 stop26h 55mMultiple Airlines

Deal found 14/4$12,957

Mon 21/415:25PDX - SYD

1 stop22h 55mAir Canada

Mon 28/409:20SYD - PDX

1 stop26h 05mAir Canada

Deal found 14/4$14,960

Mon 21/418:07PDX - SYD

3 stops48h 38mFiji Airways

Mon 28/413:15SYD - PDX

2 stops26h 06mFiji Airways

Deal found 14/4$15,045

Mon 21/416:54PDX - SYD

4 stops47h 41mLATAM Airlines

Mon 28/411:50SYD - PDX

3 stops41h 08mLATAM Airlines

Deal found 14/4$34,915

Sun 27/400:59PDX - SYD

2 stops36h 36mWestJet

Mon 5/520:30SYD - PDX

2 stops41h 19mWestJet

Deal found 14/4$11,821

Mon 12/510:00PDX - SYD

2 stops40h 15mANA

Mon 19/520:55SYD - PDX

2 stops38h 50mANA

Deal found 14/4$2,085

Mon 12/512:09PDX - SYD

1 stop25h 56mAmerican Airlines

Mon 19/509:10SYD - PDX

1 stop19h 15mAmerican Airlines

Deal found 14/4$2,201

Fri 16/510:00PDX - SYD

2 stops31h 35mAir New Zealand

Wed 21/510:20SYD - PDX

1 stop24h 53mAir New Zealand

Deal found 14/4$14,307

One-way flights from Portland to Sydney
Search for one-way flight options from Portland to Sydney. Find affordable one-way fares based on user searches. Data last updated 15 April 2025.

Wed 9/714:35PDX - SYD

3 stops35h 40mMultiple Airlines

Deal found 14/4$1,072

Wed 30/417:55PDX - SYD

2 stops32h 50mAlaska Airlines

Deal found 14/4$1,100

Wed 9/715:00PDX - SYD

1 stop23h 05mAmerican Airlines

Deal found 14/4$1,104

Sun 6/705:00PDX - SYD

2 stops32h 55mUnited Airlines

Deal found 14/4$1,115

Tue 8/713:38PDX - SYD

2 stops23h 57mDelta

Deal found 14/4$1,123

Wed 30/408:05PDX - SYD

1 stop18h 40mHawaiian Airlines

Deal found 14/4$1,256

Tue 29/415:25PDX - SYD

1 stop22h 55mAir Canada

Deal found 14/4$1,283

Tue 8/719:35PDX - SYD

3 stops26h 35mAir Tahiti Nui

Deal found 14/4$2,020

Tue 8/707:00PDX - SYD

3 stops40h 45mSingapore Airlines

Deal found 14/4$3,051

Tue 6/517:50PDX - SYD

2 stops43h 20mCathay Pacific

Deal found 14/4$3,236

Sun 27/416:54PDX - SYD

4 stops47h 41mLATAM Airlines

Deal found 14/4$5,041

Wed 25/617:09PDX - SYD

2 stops45h 51mPhilippine Airlines

Deal found 14/4$5,852

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portland to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 11/8

17:09-14:40

2 stops52h 31m

Sydney Kingsford Smith

Fri 22/8

16:20-22:40

1 stop23h 20m

$1,566

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 8/8

15:25-07:20

1 stop22h 55m

Sydney Kingsford Smith

Thu 14/8

07:00-09:25

2 stops19h 25m

$1,707

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 29/8

07:35-19:45

1 stop19h 10m

Sydney Kingsford Smith

Fri 12/9

21:40-06:00

1 stop25h 20m

$1,819

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 29/8

07:35-19:45

1 stop19h 10m

Sydney Kingsford Smith

Tue 9/9

21:40-06:08

2 stops25h 28m

$1,829

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 29/8

10:00-09:25

2 stops30h 25m

Sydney Kingsford Smith

Fri 12/9

11:50-18:46

2 stops23h 56m

$1,933

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 22/7

15:25-08:45

2 stops24h 20m

Sydney Kingsford Smith

Tue 29/7

09:55-18:46

2 stops25h 51m

$1,959

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 3/9

14:00-07:05

1 stop24h 05m

Sydney Kingsford Smith

Wed 17/9

09:10-12:45

1 stop20h 35m

$1,963

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 11/8

19:35-06:55

1 stop18h 20m

Sydney Kingsford Smith

Mon 25/8

10:20-12:43

1 stop19h 23m

$1,986

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 20/7

17:10-06:35

1 stop20h 25m

Sydney Kingsford Smith

Wed 30/7

09:25-19:16

1 stop26h 51m

$1,995

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 29/5

21:30-17:50

3 stops51h 20m

Sydney Kingsford Smith

Thu 5/6

07:10-20:48

3 stops30h 38m

$3,254

Flights are sorted by cheapest return flights first.

Deals found on 14/4

Showing 1-10 of 31 results

Best time to book a flight from Portland to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Portland with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to Sydney

How far ahead should I book a flight from Portland to Sydney?

The best time to book flights from Portland to Sydney is 24 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Portland to Sydney?

Currently, May is the cheapest month in which you can book a flight from Portland to Sydney (average of $129). Flying from Portland to Sydney in October is currently the most expensive (average of $171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PDX to SYD?

One of the essential ways to save on airfare from Portland to Sydney is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the morning could potentially save you up to 23% on airfare.

Rainfall in Sydney by month

In terms of precipitation, rainfall in Sydney ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Sydney when rainfall is around 50.0 mm.

Temperature in Sydney by month

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

Reviews of airlines servicing Sydney

To help decide which airline to fly from Portland to Sydney, see what other customers have to say about Air Tahiti Nui, ANA and Singapore Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Air Tahiti Nui

8.8

Very Good

62 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Air Tahiti Nui

8.8

Very Good

62 reviews

Air Tahiti Nui

8.8

Very Good

62 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

ANA

8.3

Very Good

841 reviews

Air Tahiti Nui

8.8

Very Good

62 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Singapore Airlines

8.1

Very Good

1,288 reviews

Air Tahiti Nui

8.8

Very Good

62 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Fiji Airways

8.0

Very Good

183 reviews

Air Tahiti Nui

8.8

Very Good

62 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Delta

8.0

Very Good

7,916 reviews

Air Tahiti Nui

8.8

Very Good

62 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Related info for your journey

What are the cheapest airlines flying from Portland to Sydney round-trip?
Cheapflights users have booked flights from Portland to Sydney round-trip from $1,707. Other airlines that can offer you cheap pricing are Hawaiian Airlines, from $1,819, and Alaska Airlines, from $1,829. You may be able to fly from Portland to Sydney for 8% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Portland to Sydney one-way?
One-way options have recently been found by users for as low as $1,100 on Alaska Airlines. Other airlines that offer cheap prices include American Airlines from $1,104 and United Airlines from $1,115 one-way.
Can I find deals for flights from Portland to Sydney that include hotel bookings?
Yes. In addition to deals on Portland to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Portland to Sydney?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Sydney.
Can I find deals for business class flights from Portland to Sydney?
Yes. Cheapflights offers flight deals from Portland to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Portland to Sydney?
Currently, May is the cheapest month in which you can book a flight from Portland to Sydney (average of $129). Flying from Portland to Sydney in October is currently the most expensive (average of $171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Parramatta

Wollongong

Katoomba

Manly

Penrith

Coogee

Randwick

Terrigal

Cronulla

Lithgow

Bondi Beach

Leura

Swansea

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Portland to Sydney

Eugene to Sydney flights

Boise to Sydney flights

Portland to Coolangatta flights

Other flights to Sydney

Top airline flying from Portland to Sydney

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$1,188	Average$1,843	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from Portland to Sydney?

Deals for Portland to Sydney flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Portland to Sydney?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Portland to Sydney.

Can Cheapflights find flights from Portland to Sydney with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Portland to Sydney flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Portland to Sydney become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Sydney from Portland today and book when prices fit your budget.

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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Portland to Sydney from $1,072

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/7. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Portland to Sydney Kingsford Smith are usually found in February or August, booked 25 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Portland to Sydney

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Portland to Sydney

Cheapest flights from Portland to SydneyExplore the most affordable flight options available from Portland to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 April 2025.

Explore the most affordable flight options available from Portland to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 April 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portland to Sydney that are best for you.

Best time to book a flight from Portland to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Portland with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Portland to Sydney

How far ahead should I book a flight from Portland to Sydney?

Use this chart to determine the optimal time to book a return flight from Portland to Sydney. Price data was last updated on 11 April 2025.

What is the cheapest month to book a flight from Portland to Sydney?

What is the cheapest time of day to fly from PDX to SYD?

Find hourly flight availability from Portland to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 April 2025.

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated 15 April 2025.

To help decide which airline to fly from Portland to Sydney, see what other customers have to say about Air Tahiti Nui, ANA and Singapore Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Portland to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Portland to Sydney round-trip?

What are the cheapest airlines to fly from Portland to Sydney one-way?

Can I find deals for flights from Portland to Sydney that include hotel bookings?

How can I find direct flights from Portland to Sydney?

Can I find deals for business class flights from Portland to Sydney?

What is the cheapest month to book a flight from Portland to Sydney?

Travelling to a place near Portland?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Sydney

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Portland to Sydney

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Portland to Sydney?

Why should you use Cheapflights to find cheap flight tickets from Portland to Sydney?

Can Cheapflights find flights from Portland to Sydney with no change fees?

Can Cheapflights notify me if prices for flights from Portland to Sydney become cheaper?

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Travel Smart

Cheapest flights from Portland to Sydney
Explore the most affordable flight options available from Portland to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 April 2025.