When did momondo last update prices for flights from Williamsport Lycoming County Airport to Seattle/Tacoma Intl Airport?

Prices for flights from Williamsport Lycoming County Airport to Seattle/Tacoma Intl Airport refresh daily.

How old do you have to be to fly from Williamsport Lycoming County Airport to Seattle/Tacoma Intl 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 Williamsport Lycoming County Airport to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$534 Cheap Flights from Williamsport to Seattle in 2026

Find the cheapest flights from Williamsport to Seattle

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:55 am - 8:34 pm

IPT

SEA

17h 39m

1 stop

9:35 pm - 2:15 pm

SEA

IPT

13h 40m

1 stop

$534Multiple Airlines

Wed, Sep 2 - Wed, Sep 9

5:55 am - 11:39 am

IPT

SEA

8h 44m

1 stop

9:35 pm - 2:15 pm

SEA

IPT

13h 40m

1 stop

$554Multiple Airlines

Tue, Sep 1 - Wed, Sep 9

5:55 am - 8:34 pm

IPT

SEA

17h 39m

1 stop

9:35 pm - 2:15 pm

SEA

IPT

13h 40m

1 stop

$574Multiple Airlines

Wed, Sep 2 - Sat, Sep 12

10:15 am - 9:37 am

IPT

SEA

26h 22m

1 stop

9:35 pm - 2:15 pm

SEA

IPT

13h 40m

1 stop

$614Multiple Airlines

Sun, Aug 30 - Sat, Sep 12

5:55 am - 8:34 pm

IPT

SEA

17h 39m

1 stop

9:35 pm - 2:15 pm

SEA

IPT

13h 40m

1 stop

$619Multiple Airlines

Wed, Sep 2 - Tue, Sep 8

5:55 am - 9:37 am

IPT

SEA

30h 42m

1 stop

9:35 pm - 2:15 pm

SEA

IPT

13h 40m

1 stop

$623Multiple Airlines

Tue, Aug 25 - Wed, Sep 9

5:55 am - 8:34 pm

IPT

SEA

17h 39m

1 stop

9:35 pm - 2:15 pm

SEA

IPT

13h 40m

1 stop

$654Multiple Airlines

Wed, Aug 26 - Sat, Sep 5

10:15 am - 9:37 am

IPT

SEA

26h 22m

1 stop

9:35 pm - 2:15 pm

SEA

IPT

13h 40m

1 stop

$659Multiple Airlines

Sun, Aug 30 - Tue, Sep 8

5:55 am - 11:39 am

IPT

SEA

8h 44m

1 stop

9:35 pm - 2:15 pm

SEA

IPT

13h 40m

1 stop

$663Multiple Airlines

Tue, Aug 25 - Sat, Sep 5

5:55 am - 9:37 am

IPT

SEA

30h 42m

1 stop

3:56 pm - 2:15 pm

SEA

IPT

19h 19m

1 stop

$699Multiple Airlines

Fri, Aug 28 - Tue, Sep 8

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Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

WilliamsportSeattle

IPT - SEA

IPTSEA

Williamsport Lycoming County

Wed 9/2

5:55 am-8:34 pm

1 stop17h 39m

Seattle/Tacoma Intl

Wed 9/9

9:35 pm-2:15 pm

1 stop13h 40m

$534

Quickest round-trip

WilliamsportSeattle

IPT - SEA

IPTSEA

Williamsport Lycoming County

Tue 9/1

5:55 am-11:39 am

1 stop8h 44m

Seattle/Tacoma Intl

Wed 9/9

9:35 pm-2:15 pm

1 stop13h 40m

$554

WilliamsportSeattle

IPT - SEA

IPTSEA

Williamsport Lycoming County

Wed 9/2

5:55 am-8:34 pm

1 stop17h 39m

Seattle/Tacoma Intl

Sat 9/12

9:35 pm-2:15 pm

1 stop13h 40m

$574

WilliamsportSeattle

IPT - SEA

IPTSEA

Williamsport Lycoming County

Sun 8/30

10:15 am-9:37 am

1 stop26h 22m

Seattle/Tacoma Intl

Sat 9/12

9:35 pm-2:15 pm

1 stop13h 40m

$614

WilliamsportSeattle

IPT - SEA

IPTSEA

Williamsport Lycoming County

Wed 9/2

5:55 am-8:34 pm

1 stop17h 39m

Seattle/Tacoma Intl

Tue 9/8

9:35 pm-2:15 pm

1 stop13h 40m

$619

WilliamsportSeattle

IPT - SEA

IPTSEA

Williamsport Lycoming County

Tue 8/25

5:55 am-9:37 am

1 stop30h 42m

Seattle/Tacoma Intl

Wed 9/9

9:35 pm-2:15 pm

1 stop13h 40m

$623

WilliamsportSeattle

IPT - SEA

IPTSEA

Williamsport Lycoming County

Wed 8/26

5:55 am-8:34 pm

1 stop17h 39m

Seattle/Tacoma Intl

Sat 9/5

9:35 pm-2:15 pm

1 stop13h 40m

$654

WilliamsportSeattle

IPT - SEA

IPTSEA

Williamsport Lycoming County

Sun 8/30

10:15 am-9:37 am

1 stop26h 22m

Seattle/Tacoma Intl

Tue 9/8

9:35 pm-2:15 pm

1 stop13h 40m

$659

WilliamsportSeattle

IPT - SEA

IPTSEA

Williamsport Lycoming County

Tue 8/25

5:55 am-11:39 am

1 stop8h 44m

Seattle/Tacoma Intl

Sat 9/5

9:35 pm-2:15 pm

1 stop13h 40m

$663

WilliamsportSeattle

IPT - SEA

IPTSEA

Williamsport Lycoming County

Fri 8/28

5:55 am-9:37 am

1 stop30h 42m

Seattle/Tacoma Intl

Tue 9/8

3:56 pm-2:15 pm

1 stop19h 19m

$699

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Williamsport to Seattle

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 Seattle?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Seattle from Williamsport according to our data. American Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 4 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

When to book flights from Williamsport to Seattle

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

Estimated round-trip price

Cheap Williamsport to Seattle (IPT to SEA) flight deals and tips

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

Fastest flight time	8h 44m
Direct flights	None

The fastest flight from Williamsport to Seattle takes 8h 44m

There are no direct flights from Williamsport to Seattle. There are no popular flight routes from Williamsport to Seattle.

Search flight deals

Frequently asked questions about flying from Williamsport to Seattle

How far is Williamsport Lycoming County to Seattle/Tacoma Intl by plane?
A flight from Williamsport Lycoming County to Seattle/Tacoma Intl will travel around 2245.2 mi. Typically, this will take 8h 44m by plane in normal conditions.
When did momondo last update prices for flights from Williamsport Lycoming County Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Williamsport Lycoming County Airport to Seattle/Tacoma Intl Airport refresh daily.
How old do you have to be to fly from Williamsport Lycoming County Airport to Seattle/Tacoma Intl 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 Williamsport Lycoming County Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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Why use momondo?

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

It is quick and easy to find Williamsport to Seattle flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Seattle that suits you.

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

Yes. momondo enables you to select and highlight flights to Seattle from Williamsport with this policy.

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

momondo provides multiple filters to help you find the best flight to Seattle from Williamsport. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Seattle from Williamsport are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.