What is the cheapest airline to fly from Twin Falls to Seattle round-trip?

Our cheapest airline available from Twin Falls to Seattle is Delta. Our recent data shows that you can find tickets from as low as $612 on this airline.

What is the cheapest month to book a flight from Twin Falls to Seattle?

Currently, January is the cheapest month in which you can book a flight from Twin Falls to Seattle (average of $238). Flying from Twin Falls to Seattle in July is currently the most expensive (average of $390). 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.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

What is the cheapest time of day to fly from TWF to SEA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Twin Falls to Seattle as you normally would.

Can I find deals for flights from Twin Falls to Seattle that include hotel bookings?

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

How can I find direct flights from Twin Falls to Seattle?

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

Can I find deals for business class flights from Twin Falls to Seattle?

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

$343+ Flights from Twin Falls to Seattle

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Cheap flight deals from Twin Falls to Seattle

Round-trip from	$612 (Delta)
One-way from	$343 (Delta)

From Twin Falls Joslin to Seattle/Tacoma Intl

Search Deals

One-way flight from Twin Falls Joslin to Seattle/Tacoma Intl

Search Deals

Find flight deals from Twin Falls to Seattle

Cheapest flights from Twin Falls to Seattle
Explore the most affordable flight options available from Twin Falls to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Thu 7/36:15 amTWF - SEA

1 stop4h 10mDelta

Tue 7/87:10 amSEA - TWF

1 stop6h 28mDelta

Deal found 7/1

$546

Best flights from Twin Falls to Seattle
Discover carefully curated flight deals from Twin Falls to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 1, 2025.

Fri 7/113:20 pmTWF - SEA

1 stop4h 05mDelta

Sun 7/137:10 amSEA - TWF

1 stop6h 28mDelta

Deal found 7/1

$612

Last-minute flights from Twin Falls to Seattle
Discover last-minute flight deals from Twin Falls to Seattle. Data last updated July 1, 2025 and is based on user searches.

Thu 7/36:15 amTWF - SEA

1 stop4h 10mDelta

Tue 7/87:10 amSEA - TWF

1 stop6h 28mDelta

Deal found 7/1

$546

Fri 7/113:20 pmTWF - SEA

1 stop4h 05mDelta

Sun 7/137:10 amSEA - TWF

1 stop6h 28mDelta

Deal found 7/1

$612

One-way flights from Twin Falls to Seattle
Search for one-way flight options from Twin Falls to Seattle. Find affordable one-way fares based on user searches. Data last updated July 1, 2025.

Thu 7/173:20 pmTWF - SEA

1 stop4h 05mDelta

Deal found 6/29

$343

Cheapflights Fare Finder

Use the filters below to find and compare flights from Twin Falls to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Twin FallsSeattle

TWF - SEA

TWFSEA

Twin Falls Joslin

Fri 7/11

3:20 pm-6:25 pm

1 stop4h 05m

Seattle/Tacoma Intl

Sun 7/13

7:10 am-2:38 pm

1 stop6h 28m

$612

Twin FallsSeattle

TWF - SEA

TWFSEA

Twin Falls Joslin

Thu 7/17

3:20 pm-6:25 pm

1 stop4h 05m

$343

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Best time to book a flight from Twin Falls to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Twin Falls 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.

Reviews of airlines servicing Seattle

Read through reviews of airlines operating flights from Twin Falls to Seattle, such as Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,973 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,973 reviews

Delta

8.0

Very good

7,973 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What is the cheapest airline to fly from Twin Falls to Seattle round-trip?
Our cheapest airline available from Twin Falls to Seattle is Delta. Our recent data shows that you can find tickets from as low as $612 on this airline.
Can I find deals for flights from Twin Falls to Seattle that include hotel bookings?
Yes. In addition to deals on Twin Falls to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Twin Falls to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Twin Falls to Seattle.
Can I find deals for business class flights from Twin Falls to Seattle?
Yes. Cheapflights offers flight deals from Twin Falls to Seattle 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 Twin Falls to Seattle?
Currently, January is the cheapest month in which you can book a flight from Twin Falls to Seattle (average of $238). Flying from Twin Falls to Seattle in July is currently the most expensive (average of $390). 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

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Alternative routes for Twin Falls to Seattle

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Other flights to Seattle

Top airline flying from Twin Falls to Seattle

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$416	Average$478	FlexibilityNo cancel fee	On-timeN/A

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$343+ Cheap flights from Twin Falls to Seattle (TWF - SEA)

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 7/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Twin Falls to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Twin Falls to Seattle

Round-trip from

One-way from

Find flight deals from Twin Falls to Seattle

Cheapest flights from Twin Falls to SeattleExplore the most affordable flight options available from Twin Falls to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Explore the most affordable flight options available from Twin Falls to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Twin Falls to Seattle that are best for you.

Best time to book a flight from Twin Falls to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Twin Falls with our price prediction graph.

Reviews of airlines servicing Seattle

Read through reviews of airlines operating flights from Twin Falls to Seattle, such as Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What is the cheapest airline to fly from Twin Falls to Seattle round-trip?

Can I find deals for flights from Twin Falls to Seattle that include hotel bookings?

How can I find direct flights from Twin Falls to Seattle?

Can I find deals for business class flights from Twin Falls to Seattle?

What is the cheapest month to book a flight from Twin Falls to Seattle?

Traveling to a place near Twin Falls?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Twin Falls to Seattle

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

Top airline flying from Twin Falls to Seattle

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Book with Flexibility

Travel Smart

Cheapest flights from Twin Falls to Seattle
Explore the most affordable flight options available from Twin Falls to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.