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$2,145+ Cheap flights from Seattle (SEA) to Newcastle (NTL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — NTL
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Seattle to Newcastle

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Newcastle (NTL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.

Round-trip from

$2,145
(lastminute.com)
From Seattle/Tacoma Intl to Newcastle Williamtown
Search Deals

Find flight deals from Seattle to Newcastle

Cheapest flights from Seattle to Newcastle
Explore the most affordable flight options available from Seattle to Newcastle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This lastminute.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/252:30 pmSEA - NTL
2 stops37h 30mQantas Airways
Fri 8/15:00 pmNTL - SEA
2 stops45h 44mQantas Airways
Deal found 6/10$2,145
This Qantas Airways deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/254:18 pmSEA - NTL
2 stops24h 07mMultiple Airlines
Fri 8/110:05 amNTL - SEA
3 stops26h 55mMultiple Airlines
Deal found 6/10$2,233
This Gotogate deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/251:45 pmSEA - NTL
3 stops32h 40mAir New Zealand
Fri 8/16:00 amNTL - SEA
3 stops29h 36mAir New Zealand
Deal found 6/10$2,827

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Seattle to Newcastle that are best for you.

Fly from

Seattle

Fly to

Newcastle

Route

Depart

Return

Price

SeattleNewcastle

SEA - NTL

SEANTL

Seattle/Tacoma Intl

Fri 7/25

2:30 pm-9:00 pm

2 stops37h 30m

Newcastle Williamtown

Fri 8/1

5:00 pm-9:44 pm

2 stops45h 44m

$2,145

SeattleNewcastle

SEA - NTL

SEANTL

Seattle/Tacoma Intl

Fri 7/25

4:18 pm-9:25 am

2 stops24h 07m

Newcastle Williamtown

Fri 8/1

10:05 am-8:00 pm

3 stops26h 55m

$2,233

SeattleNewcastle

SEA - NTL

SEANTL

Seattle/Tacoma Intl

Fri 7/25

1:45 pm-3:25 pm

3 stops32h 40m

Newcastle Williamtown

Fri 8/1

6:00 am-6:36 pm

3 stops29h 36m

$2,827

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Best time to book a flight from Seattle to Newcastle

Have a flexible travel schedule? Discover the best time to fly to Newcastle from Seattle with our price prediction graph.
Estimated round-trip 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 Seattle to Newcastle

Rainfall in Newcastle by month

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

In terms of precipitation, rainfall in Newcastle ranges from 2.4 - 4.7 inches per month. March is typically the wettest month, when rainfall can reach 4.7 in. November is typically the driest time to visit Newcastle when rainfall is around 2.4 in.

Temperature in Newcastle by month

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

If weather is an important factor for your trip to Newcastle, 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 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Newcastle

Get insights into the airlines that provide service to Newcastle. 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 Newcastle. Reviews last updated June 12, 2025.
Air New Zealand
8.0
Very good
483 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.4

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

AKL - SFO

It was a United plane, the seating was too tight.
Air New Zealand
8.0
Very good
483 reviews
Air New Zealand
8.0
Very good
483 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.4

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

AKL - SFO

It was a United plane, the seating was too tight.
Qantas Airways
7.5
Good
854 reviews
Air New Zealand
8.0
Very good
483 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.4

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

AKL - SFO

It was a United plane, the seating was too tight.

Related info for your journey

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

  • Can I find deals for flights from Seattle to Newcastle that include hotel bookings?

    Yes. In addition to deals on Seattle to Newcastle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Newcastle?

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

  • Can I find deals for business class flights from Seattle to Newcastle?

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

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