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Cheap flights from Seattle to Newcastle from $2,168

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Newcastle departing on 10/17. 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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Cheap round-trip flights

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Singapore Airlines Logo
10:15 am - 3:00 pm
SEA
-
NTL
34h 45m
2 stops
Singapore Airlines Logo
3:40 pm - 8:45 am
NTL
-
SEA
35h 05m
2 stops
$2,168Singapore Airlines
Sat, Oct 17 - Wed, Oct 21

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Newcastle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 10, 2026.
Use the filters below to find and compare flights from Seattle to Newcastle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleNewcastle

SEA - NTL

SEANTL

Seattle/Tacoma Intl

Sat 10/17

10:15 am-3:00 pm

2 stops34h 45m

Newcastle Williamtown

Wed 10/21

3:40 pm-8:45 am

2 stops35h 05m

$2,168

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from Seattle to Newcastle

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 airlines fly to Newcastle?

Air Canada, United Airlines and Alaska Airlines are the top three most popular airlines that fly to Newcastle from Seattle according to our data. Air Canada is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Newcastle. Keep in mind that there are 10 different airlines that fly to Newcastle on a routine basis, so you have a few additional options to choose from.

When to book flights from Seattle to Newcastle

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Newcastle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Newcastle (SEA to NTL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Newcastle

Fastest flight time

34h 45m

Direct flights

None
The fastest flight from Seattle to Newcastle takes 34h 45m
There are no direct flights from Seattle to Newcastle. There are no popular flight routes from Seattle to Newcastle.
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Frequently asked questions about flying from Seattle to Newcastle

  • How far is Seattle/Tacoma Intl to Newcastle Williamtown by plane?

    The distance between Seattle/Tacoma Intl and Newcastle Williamtown is about 7674.6 mi. By plane, this route typically takes 34h 45m.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Newcastle Williamtown Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Newcastle Williamtown Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Newcastle Williamtown Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Newcastle Williamtown Airport.

  • What documentation or ID do you need to fly to Newcastle Williamtown Airport?

    The necessary travel and health documents for your Newcastle Williamtown Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Newcastle?

Book flights to Newcastle if you plan to visit one of these locations
Nelson Bay

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Newcastle?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Newcastle. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Seattle to Newcastle with flexible booking policies on momondo?

momondo does allow users to show only those flights to Newcastle from Seattle which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Seattle to Newcastle?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Newcastle.

I’m not ready to book a flight from Seattle to Newcastle right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Newcastle, momondo offers a useful price alert feature which will track prices for flights to Newcastle from Seattle and alert you when they change.

An easier way to manage your Newcastle trip

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